0001262039-13-000009 | 10-K | XBRL Viewer

Segment Information (Details) $ in Thousands	12 Months Ended
Segment Information (Details) $ in Thousands	Dec. 31, 2012 USD ($) Business_Activity Segment_Managers reportable_segment	Dec. 31, 2011 USD ($)	Dec. 31, 2010 USD ($)
Segment Reporting Information [Line Items]
Business activity (in business activities) \| Business_Activity	1
Segment managers responsible for operations (in segment managers) \| Segment_Managers	0
Number of Reportable Segments (in reportable segments) \| reportable_segment	1
Revenue	$ 533,639	$ 433,576	$ 324,696
Property and equipment - net	25,638	7,966
Americas [Member]
Segment Reporting Information [Line Items]
Revenue	217,056	172,494	123,961
Property and equipment - net	23,227	6,320
United States
Segment Reporting Information [Line Items]
Revenue	145,369	120,456	92,097
Property and equipment - net	18,764	2,225
Canada [Member]
Segment Reporting Information [Line Items]
Property and equipment - net	4,376	4,062
Other Americas [Member]
Segment Reporting Information [Line Items]
Revenue	71,687	52,038	31,864
Property and equipment - net	87	33
EMEA [Member]
Segment Reporting Information [Line Items]
Revenue	184,175	152,385	121,604
Property and equipment - net	1,213	805
APAC [Member]
Segment Reporting Information [Line Items]
Revenue	132,408	108,697	$ 79,131
Property and equipment - net	$ 1,198	$ 841

Net Income Per Share (Tables)

12 Months Ended

Dec. 31, 2012

Earnings Per Share [Abstract]

Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]

A reconciliation of the numerator and denominator used in the calculation of basic and diluted net income per share is as follows ($ and share amounts in 000’s, except per share amounts):



	Fiscal Year
	2012	2011	2010
Numerator:
Net income	66,836	62,492	41,245

Denominator:
Basic shares:
Weighted-average common stock outstanding-basic	158,074	152,581	140,726
Diluted shares:
Weighted-average common stock outstanding-basic	158,074	152,581	140,726
Effect of potentially dilutive securities:
Stock options	8,214	11,200	15,524
ESPP	41	—	—
Warrants to purchase common stock	—	—	156
Weighted-average shares used to compute diluted net income per share	166,329	163,781	156,406
Net income per share:
Basic	0.42	0.41	0.29
Diluted	0.40	0.38	0.26

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]

The following weighted-average shares of common stock were excluded from the computation of diluted net income per share for the periods presented, as their effect would have been antidilutive (in 000’s):



	Fiscal Year
	2012	2011	2010
Stock options	7,183	3,893	3,006
RSUs	291	—	—
ESPP	321	122	—
	7,795	4,015	3,006

Property and Equipment—Net

12 Months Ended

Dec. 31, 2012

Property, Plant and Equipment [Abstract]

PROPERTY AND EQUIPMENT—Net

Property and equipment consisted of the following ($ amounts in 000’s):



	December 31, 2012		December 31, 2011
Land	13,895		—
Building and building improvements	610		—
Evaluation units	18,322		13,912
Computer equipment and software	17,176		12,219
Furniture and fixtures	1,501		1,307
Leasehold improvements and tooling	5,354		4,381
Total property and equipment	56,858		31,819
Less: accumulated depreciation	(31,220	)	(23,853	)
Property and equipment—net	25,638		7,966

In August 2012, we purchased certain real property, including land and buildings in Sunnyvale, California, for cash of $14.5 million, to support the growth in our business operations. Of the total cost, we allocated $13.9 million to land and $0.6 million to building and building improvements.

Depreciation expense was $10.5 million, $7.0 million and $5.7 million in 2012, 2011 and 2010, respectively.

- Definition

The entire disclosure for long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software. This disclosure may include property plant and equipment accounting policies and methodology, a schedule of property, plant and equipment gross, additions, deletions, transfers and other changes, depreciation, depletion and amortization expense, net, accumulated depreciation, depletion and amortization expense and useful lives, income statement disclosures, assets held for sale and public utility disclosures.

+ References + Details

Income Taxes , Provision for Income Tax (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Current:
Federal	$ 43,765	$ 34,856	$ 10,633
State	1,992	2,785	(82)
Foreign	2,266	1,402	9,298
Total current	48,023	39,043	19,849
Deferred:
Federal	(9,677)	(9,326)	(4,119)
State	(186)	(136)	(626)
Foreign	0	0	(8)
Total deferred	(9,863)	(9,462)	(4,753)
Total provision for income taxes	$ 38,160	$ 29,581	$ 15,096

Document and Entity Information - USD ($)	12 Months Ended
Document and Entity Information - USD ($)	Dec. 31, 2012	Feb. 20, 2013	Jun. 29, 2012
Document Information [Line Items]
Entity Registrant Name	FORTINET INC
Entity Central Index Key	0001262039
Document Type	10-K
Document Period End Date	Dec. 31, 2012
Amendment Flag	false
Document Fiscal Year Focus	2012
Document Fiscal Period Focus	FY
Current Fiscal Year End Date	--12-31
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Well Known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Common Stock, Shares Outstanding		161,607,952
Entity Public Float			$ 2,800,919,536

Financial Instruments and Fair Value , Investments (Details) - USD ($) $ in Thousands	Dec. 31, 2012	Dec. 31, 2011
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$ 614,853	$ 468,270
Unrealized Gains	1,925	273
Unrealized Losses	(167)	(1,846)
Total	616,611	466,697
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Less Than 12 Months, Fair Value	141,470	294,000
Less Than 12 Months, Unrealized Losses	(162)	(1,846)
12 Months or Greater, Fair Value	5,010	0
12 Months or Greater, Unrealized Losses	(5)	0
Total, Fair Value	146,480	294,000
Total, Unrealized Losses	(167)	(1,846)
Available-for-sale Securities, Debt Maturities, Fair Value [Abstract]
Due within one year	290,719	318,283
Due within one to three years	325,892	148,414
Total	616,611	466,697
U.S. government and agency securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost		38,900
Unrealized Gains		10
Unrealized Losses		(2)
Total		38,908
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Less Than 12 Months, Fair Value		10,996
Less Than 12 Months, Unrealized Losses		(2)
12 Months or Greater, Fair Value		0
12 Months or Greater, Unrealized Losses		0
Total, Fair Value		10,996
Total, Unrealized Losses		(2)
Available-for-sale Securities, Debt Maturities, Fair Value [Abstract]
Total		38,908
Corporate debt securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	529,738	339,110
Unrealized Gains	1,814	219
Unrealized Losses	(161)	(1,832)
Total	531,391	337,497
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Less Than 12 Months, Fair Value	133,006	258,159
Less Than 12 Months, Unrealized Losses	(156)	(1,832)
12 Months or Greater, Fair Value	5,010	0
12 Months or Greater, Unrealized Losses	(5)	0
Total, Fair Value	138,016	258,159
Total, Unrealized Losses	(161)	(1,832)
Available-for-sale Securities, Debt Maturities, Fair Value [Abstract]
Total	531,391	337,497
Commercial paper [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	39,229	51,025
Unrealized Gains	22	7
Unrealized Losses	(6)	(5)
Total	39,245	51,027
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Less Than 12 Months, Fair Value	8,464	9,279
Less Than 12 Months, Unrealized Losses	(6)	(5)
12 Months or Greater, Fair Value	0	0
12 Months or Greater, Unrealized Losses	0	0
Total, Fair Value	8,464	9,279
Total, Unrealized Losses	(6)	(5)
Available-for-sale Securities, Debt Maturities, Fair Value [Abstract]
Total	39,245	51,027
Municipal bonds [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	36,787	20,473
Unrealized Gains	83	36
Unrealized Losses	0	(5)
Total	36,870	20,504
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Less Than 12 Months, Fair Value		8,067
Less Than 12 Months, Unrealized Losses		(5)
12 Months or Greater, Fair Value		0
12 Months or Greater, Unrealized Losses		0
Total, Fair Value		8,067
Total, Unrealized Losses		(5)
Available-for-sale Securities, Debt Maturities, Fair Value [Abstract]
Total	36,870	20,504
Certificates of deposit and term deposits [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	9,099	18,762
Unrealized Gains	6	1
Unrealized Losses	0	(2)
Total	9,105	18,761
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Less Than 12 Months, Fair Value		7,499
Less Than 12 Months, Unrealized Losses		(2)
12 Months or Greater, Fair Value		0
12 Months or Greater, Unrealized Losses		0
Total, Fair Value		7,499
Total, Unrealized Losses		(2)
Available-for-sale Securities, Debt Maturities, Fair Value [Abstract]
Total	$ 9,105	$ 18,761

Income Taxes , Reconciliation of Pre-Tax Income(Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest [Abstract]
Domestic	$ 95,730	$ 85,411	$ 50,556
Foreign	9,266	6,662	5,785
INCOME BEFORE INCOME TAXES	$ 104,996	$ 92,073	$ 56,341

Schedule II (Details) - Allowance for Doubtful Accounts [Member] $ in Thousands	12 Months Ended
	Dec. 31, 2011 USD ($)
Movement in Valuation Allowances and Reserves [Roll Forward]
Beginning balance	$ 336
Charged to costs and expenses	(126)
Bad debt write-offs	(95)
Ending balance	$ 115

Summary of Significant Accounting Policies , Derivatives (Details) $ in Thousands	Dec. 31, 2012 CAD ($)
CAD
Derivative [Line Items]
Notional amount of forward exchange contracts	$ 17,968

Intangible Assets

12 Months Ended

Dec. 31, 2012

Goodwill and Intangible Assets Disclosure [Abstract]

INTANGIBLE ASSETS

The following table presents the detail of our existing intangible assets with definite lives included in other assets ($ amounts in 000’s):



	December 31, 2012			December 31, 2011
	Gross	Accumulated Amortization	Net	Gross	Accumulated Amortization	Net
Existing technology	3,541	1,424	2,117	1,772	394	1,378

Amortization expense was $1.0 million and $0.4 million in fiscal 2012 and 2011, respectively. There was no amortization expense incurred in fiscal 2010. The following table summarizes estimated future amortization expense of purchased intangible assets with definite lives for future fiscal years ($ amounts in 000’s):



	Amount
Fiscal Years:
2013	1,130
2014	707
2015	275
2016	5
Total	2,117

Commitments and Contingencies

12 Months Ended

Dec. 31, 2012

Commitments and Contingencies Disclosure [Abstract]

COMMITMENTS AND CONTINGENCIES

Leases and Minimum Royalties—We lease certain facilities under various non-cancelable operating leases, which expire through 2017. Rent expense was $8.7 million, $8.2 million and $7.0 million for fiscal 2012, 2011, and 2010, respectively. Rent expense is recognized using the straight-line method over the term of the lease. The aggregate future non-cancelable minimum rental payments on operating leases as of December 31, 2012 are as follows ($ amounts in 000’s):



	Rental Payment
Fiscal Years:
2013	8,775
2014	5,087
2015	2,394
2016	430
2017	147
Total	16,833

Contract Manufacturer and Other Commitments—Our independent contract manufacturers procure components and build our products based on our forecasts. These forecasts are based on estimates of future demand for our products, which are in turn based on historical trends and an analysis from our sales and marketing organizations, adjusted for overall market conditions. In order to reduce manufacturing lead times and plan for adequate component supply, we may issue purchase orders to some of our independent contract manufacturers which may not be cancelable. As of December 31, 2012, we had $30.0 million of open purchase orders with our independent contract manufacturers that may not be cancelable.

In addition to commitments with contract manufacturers, we have open purchase orders and contractual obligations in the ordinary course of business for which we have not received goods or services. As of December 31, 2012, we had $8.1 million in other purchase commitments.

Litigation—In August 2009, ESR, a non-practicing entity, filed a complaint against us in the United States District Court for the District of Delaware alleging infringement by us and other defendants of two patents. The plaintiffs are claiming unspecified damages and requesting an injunction against the alleged infringement. In June 2010, the Court granted our motion to stay pending the outcome of reexamination proceedings in the PTO on both asserted patents. The PTO rejected all of the claims of the patents in the suit and ESR appealed this result to the BPAI. In August 2012, the BPAI completed its review of both reexamination proceedings, and, after the BPAI’s review, all claims of the asserted ESR patents remain rejected. In October 2012, ESR filed an additional appeal of the BPAI decision with the United States Court of Appeal for the Federal Circuit. That appeal is still pending. We have determined that, as of this time, there is not a reasonable possibility that a loss has been incurred.

In April 2010, an individual, a former stockholder of Fortinet, filed a class action lawsuit against us claiming unspecified damages in the California Superior Court for the County of Los Angeles alleging violation of various California Corporations Code sections and related tort claims alleging misrepresentation and breach of fiduciary duty regarding the 2009 repurchase by Fortinet of shares of its stock while we were a privately-held company. In September 2010, the Court granted our motion to transfer the case to the California Superior Court for Santa Clara County and the plaintiff has filed several amended complaints in the Superior Court to add individual defendants, among other amendments. The Superior Court set a trial date for December 2012, but we settled this matter and paid $1.0 million in November 2012.

In July 2010, NPS, a non-practicing entity, filed a complaint in the United States District Court for the Eastern District of Texas alleging patent infringement by us and other defendants. NPS is claiming unspecified damages, including treble damages for willful infringement, and requests an injunction against such alleged infringement. In December 2011, the United States District Court for the Eastern District of Texas ordered the case to be transferred to the Northern District of California. In June 2012, the United States District Court for the Northern District of California dismissed the other defendants for misjoinder, and the case is proceeding with Fortinet as the sole defendant. This case is currently scheduled for a jury trial starting in September 2013. We have determined that, as of this time, there is not a reasonable possibility that a loss has been incurred.

In June 2012, we received a letter from SRI claiming that we infringed certain SRI patents. Subsequently, we filed a complaint in the United States District Court for the Northern District of California seeking declaratory relief and a judgment that the SRI patents were invalid, unenforceable and not infringed by any of our products or services. The case is proceeding in District Court. The case is currently in the very early stages, and we have determined that, as of this time, there is not a reasonable possibility that a loss has been incurred.

Indemnification—Under the indemnification provisions of our standard sales contracts, we agree to defend our customers against third-party claims asserting infringement of certain intellectual property rights, which may include patents, copyrights, trademarks, or trade secrets, and to pay judgments entered on such claims. Our exposure under these indemnification provisions is generally limited by the terms of our contracts to the total amount paid by our customer under the agreement. However, certain agreements include indemnification provisions that could potentially expose us to losses in excess of the amount received under the agreement. To date, there have been no claims under such indemnification provisions.

- Definition

The entire disclosure for commitments and contingencies.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6449706&loc=d3e16207-108621

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 460
-SubTopic 10
-Section 50
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=6398077&loc=d3e12565-110249

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=6952336&loc=d3e14435-108349

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.25)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 440
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6394976&loc=d3e25287-109308

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Interpretation (FIN)
-Number 14
-Paragraph 3
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 5
-Paragraph 9, 10, 11, 12
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Inventory

12 Months Ended

Dec. 31, 2012

Inventory Disclosure [Abstract]

INVENTORY

Inventory consisted of the following ($ amounts in 000’s):



	December 31, 2012	December 31, 2011
Raw materials	4,958	3,447
Finished goods	16,102	12,802
Inventory	21,060	16,249

Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2012

Accounting Policies [Abstract]

Schedule of Product Warranty Liability [Table Text Block]

Accrued warranty activities are summarized as follows ($ amounts in 000’s):



	Fiscal Year
	2012		2011		2010
Accrued warranty balance—beginning of the period	2,582		1,878		2,257
Warranty costs incurred	(2,669	)	(1,778	)	(1,337	)
Provision for warranty for the year	2,639		2,103		1,069
Changes in prior period estimates	(243	)	379		(111	)
Accrued warranty balance—end of the period	2,309		2,582		1,878

Schedule of Notional Amounts of Outstanding Derivative Positions [Table Text Block]

The notional amount of forward exchange contracts to hedge balance sheet accounts as of December 31, 2012 was (amounts in 000’s):



	Buy/Sell	Notional
To hedge balance sheet accounts:
Currency
CAD	Buy	17,968

Stock Plans , Range of Options (Details) shares in Thousands	12 Months Ended
	Dec. 31, 2012 $ / shares shares
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options Outstanding, Number Outstanding (in shares) \| shares	18,571
Options Exercisable, Number Exercisable (in shares) \| shares	11,343
Range, 0.25 to 1.20 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price, minimum (in dollars per share)	$ 0.25
Exercise Price, maximum (in dollars per share)	$ 1.2
Options Outstanding, Number Outstanding (in shares) \| shares	1,883
Options Outstanding, Weighted Average Remaining Contractual Life (in years)	2 years 4 months 28 days
Options Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 0.87
Options Exercisable, Number Exercisable (in shares) \| shares	1,883
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 0.87
Range, 3.74 to 4.65 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price, minimum (in dollars per share)	3.74
Exercise Price, maximum (in dollars per share)	$ 4.65
Options Outstanding, Number Outstanding (in shares) \| shares	6,224
Options Outstanding, Weighted Average Remaining Contractual Life (in years)	2 years 8 months 19 days
Options Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 3.76
Options Exercisable, Number Exercisable (in shares) \| shares	6,086
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 3.75
Range, 5.50 to 6.25 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price, minimum (in dollars per share)	5.5
Exercise Price, maximum (in dollars per share)	$ 6.25
Options Outstanding, Number Outstanding (in shares) \| shares	195
Options Outstanding, Weighted Average Remaining Contractual Life (in years)	3 years 9 months 26 days
Options Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 5.62
Options Exercisable, Number Exercisable (in shares) \| shares	126
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 5.64
Range, 8.43 to 8.99 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price, minimum (in dollars per share)	8.43
Exercise Price, maximum (in dollars per share)	$ 8.99
Options Outstanding, Number Outstanding (in shares) \| shares	2,056
Options Outstanding, Weighted Average Remaining Contractual Life (in years)	4 years 2 months 27 days
Options Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 8.56
Options Exercisable, Number Exercisable (in shares) \| shares	1,176
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 8.53
Range, 15.28 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price, minimum (in dollars per share)	15.28
Exercise Price, maximum (in dollars per share)	$ 15.28
Options Outstanding, Number Outstanding (in shares) \| shares	389
Options Outstanding, Weighted Average Remaining Contractual Life (in years)	4 years 10 months 6 days
Options Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 15.28
Options Exercisable, Number Exercisable (in shares) \| shares	137
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 15.28
Range, 20.13 to 24.96 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price, minimum (in dollars per share)	20.13
Exercise Price, maximum (in dollars per share)	$ 24.96
Options Outstanding, Number Outstanding (in shares) \| shares	5,335
Options Outstanding, Weighted Average Remaining Contractual Life (in years)	5 years 5 months 19 days
Options Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 21.40
Options Exercisable, Number Exercisable (in shares) \| shares	1,821
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 20.88
Range, 26.70 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price, minimum (in dollars per share)	26.7
Exercise Price, maximum (in dollars per share)	$ 26.7
Options Outstanding, Number Outstanding (in shares) \| shares	2,489
Options Outstanding, Weighted Average Remaining Contractual Life (in years)	6 years 1 month 17 days
Options Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 26.70
Options Exercisable, Number Exercisable (in shares) \| shares	114
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 26.70

Summary of Significant Accounting Policies , Revenue Recognition (Details)	12 Months Ended
	Dec. 31, 2012
Minimum [Member]
Deferred Revenue Arrangement [Line Items]
Payment Term, Invoice	30 days
Maximum [Member]
Deferred Revenue Arrangement [Line Items]
Payment Term, Invoice	90 days

Employee Benefit Plan (Details) - USD ($) $ in Millions	12 Months Ended
Employee Benefit Plan (Details) - USD ($) $ in Millions	Dec. 31, 2012	Dec. 31, 2011
Employee Benefit Plan [Abstract]
Matching contribution on employee contributions, Percent		50.00%
Maximum contibution percentage of each employee's eligible earnings, Percent		4.00%
Matching contributions to the RRSP and 401(k) Plans	$ 1.8	$ 1.5

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Net income	$ 66,836	$ 62,492	$ 41,245
Other comprehensive income (loss):
Foreign currency translation gains (losses)	524	(553)	925
Unrealized gains (losses) on investments	3,331	(1,702)	98
Unrealized gains (losses) on cash flow hedges	0	(74)	74
Tax provision related to items of other comprehensive income or loss	(1,166)	550	0
Net change in accumulated other comprehensive income	2,689	(1,779)	1,097
Comprehensive income	$ 69,525	$ 60,713	$ 42,342

- Definition

The change in equity [net assets] of a business enterprise during a period from transactions and other events and circumstances from non-owner sources which are attributable to the reporting entity. It includes all changes in equity during a period except those resulting from investments by owners and distributions to owners, but excludes any and all transactions which are directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent.

+ References + Details

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Net Income
-URI http://asc.fasb.org/extlink&oid=6518256

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3602-108585

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 225
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-04.19)
-URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

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-Subparagraph (SX 210.5-03.18)
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-Paragraph 1
-Subparagraph (SX 210.7-04.22)
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-URI http://asc.fasb.org/extlink&oid=6519514

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-Paragraph A7
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-Name Emerging Issues Task Force (EITF)
-Number 87-21
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Reference 13: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 03
-Paragraph 19
-Article 5

Reference 14: http://www.xbrl.org/2003/role/presentationRef
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-Paragraph 38
-Subparagraph a
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Reference 16: http://www.xbrl.org/2003/role/presentationRef
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-Name Regulation S-X (SX)
-Number 210
-Section 04
-Paragraph 20
-Article 9

+ Details

- Definition

Before tax amount, net of reclassification adjustments, of the change in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges, which is attributable to the parent entity. Also includes an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss).

+ References

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-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 45
-Paragraph 20
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-Name Accounting Standards Codification
-Topic 810
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-Section 50
-Paragraph 1A
-Subparagraph (c)(3)
-URI http://asc.fasb.org/extlink&oid=18733093&loc=SL4573702-111684

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+ Details

- Definition

Amount before tax, net of reclassification adjustments, resulting from the process of expressing in the reporting currency of the reporting entity those amounts that are denominated or measured in a different currency, and from transactions whose terms are denominated in a currency other than the entity's functional currency, which is attributable to the parent entity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 1A
-Subparagraph (c)(3)
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-Publisher AICPA
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-Number 51
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Reference 6: http://www.xbrl.org/2003/role/presentationRef
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+ Details

- Definition

Net of tax amount of other comprehensive income (loss) attributable to the parent entity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
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-Subparagraph (c)(3)
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-Publisher AICPA
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Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Research Bulletin (ARB)
-Number 51
-Paragraph 38
-Subparagraph c(3)
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Reference 6: http://www.xbrl.org/2003/role/presentationRef
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+ Details

- Definition

Before tax and reclassification adjustments amount of unrealized holding gain (loss) and transfers on available-for-sale securities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
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-Paragraph 10A
-Subparagraph (e)
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Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 130
-Paragraph 24
-Subparagraph b
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-Number 115
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+ Details

Income Taxes (Tables)

12 Months Ended

Dec. 31, 2012

Income Tax Disclosure [Abstract]

Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block]

($ amounts in 000’s):



	Fiscal Year
	2012	2011	2010
Domestic	95,730	85,411	50,556
Foreign	9,266	6,662	5,785
Total income before income taxes	104,996	92,073	56,341

Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]

The provision for income taxes consisted of the following ($ amounts in 000’s):



	Fiscal Year
	2012		2011		2010
Current:
Federal	43,765		34,856		10,633
State	1,992		2,785		(82	)
Foreign	2,266		1,402		9,298
Total current	48,023		39,043		19,849
Deferred:
Federal	(9,677	)	(9,326	)	(4,119	)
State	(186	)	(136	)	(626	)
Foreign	—		—		(8	)
Total deferred	(9,863	)	(9,462	)	(4,753	)
Provision for income taxes	38,160		29,581		15,096

Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]

The provision for income taxes differs from the amount computed by applying the statutory federal income tax rate as follows ($ amounts in 000’s):



	Fiscal Year
	2012		2011		2010
Tax at federal statutory tax rate	36,749		32,225		19,719
Stock-based compensation expense	1,570		(2,457	)	(2,308	)
State taxes—net of federal benefit	1,186		2,222		(1,098	)
Research and development credit	(144	)	(887	)	(948	)
Foreign income taxed at different rates	(1,845	)	(929	)	(1,066	)
Other	644		(593	)	797
Total provision for income taxes	38,160		29,581		15,096

Schedule of Deferred Tax Assets and Liabilities [Table Text Block]

The tax effects of temporary differences that give rise to significant portions of the deferred tax assets as of the years ended are presented below ($ amount in 000’s):



	December 31, 2012	December 31, 2011
Deferred tax assets:
Net operating loss carryforward	587	1,830
Deferred revenue	36,438	31,234
Nondeductible reserves and accruals	13,437	13,698
Depreciation and amortization	920	684
General business credit carryforward	1,381	396
Stock-based compensation expense	9,413	6,247
Other	12	12
Total deferred tax assets	62,188	54,101

Summary of Income Tax Contingencies [Table Text Block]

The aggregate changes in the balance of unrecognized tax benefits are as follows ($ amounts in 000’s):



	Fiscal Year
	2012		2011		2010
Unrecognized tax benefits, beginning of year	19,269		12,083		3,387
Gross increases for tax positions related to the current year	7,550		9,049		8,696
Gross increases for tax positions related to the prior year	1,479		—		—
Gross decreases for tax positions related to the prior year	(490	)	(1,863	)	—
Unrecognized tax benefits, end of year	27,808		19,269		12,083

- Definition

Tabular disclosure of tax positions taken in the tax returns filed or to be filed for which it is more likely than not that the tax position will not be sustained upon examination by taxing authorities (i.e., uncertain tax positions) and other types of income tax contingencies, including: (1) the policy on classification of interest and penalties; (2) a tabular reconciliation of the total amounts of unrecognized tax benefits at the beginning and end of the period; the total amount(s) of: (3) unrecognized tax benefits that, if recognized, would affect the effective tax rate, and (4) interest and penalties recognized in each of the income statement and balance sheet; (5) for positions for which it is reasonably possible that the total amounts unrecognized will significantly change within 12 months of the reporting date the: (i) nature of the uncertainty, (ii) nature of the event that could occur that would cause the change, and (iii) an estimate of the range of the reasonably possible change or a statement that an estimate of the range cannot be made; and (6) a description of tax years that remain subject to examination by major tax jurisdictions.

+ References + Details

Summary of Significant Accounting Policies , Warranties (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Movement in Standard Product Warranty Accrual [Roll Forward]
Accrued warranty balance—beginning of the period	$ 2,582	$ 1,878	$ 2,257
Warranty costs incurred	(2,669)	(1,778)	(1,337)
Provision for warranty for the year	2,639	2,103	1,069
Changes in prior period estimates	(243)	379	(111)
Accrued warranty balance—end of the period	$ 2,309	$ 2,582	$ 1,878
Hardware Products [Member]
Warranties [Line Items]
Warranty length	1 year
Software Products [Member]
Warranties [Line Items]
Warranty length	90 days

Net Income Per Share , Calculation of Basic and Diluted (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Earnings Per Share [Line Items]
Net income	$ 66,836	$ 62,492	$ 41,245
Basic shares:
Weighted-average common shares outstanding-basic (in shares)	158,074	152,581	140,726
Diluted shares:
Weighted-average common shares outstanding-basic (in shares)	158,074	152,581	140,726
Effect of potentially dilutive securities:
Warrants to purchase common stock (in shares)	0	0	156
Weighted-average shares used to compute diluted net income per share (in shares)	166,329	163,781	156,406
Basic (in dollars per share)	$ 0.42	$ 0.41	$ 0.29
Diluted (in dollars per share)	$ 0.40	$ 0.38	$ 0.26
Stock Options [Member]
Effect of potentially dilutive securities:
Employee stock options and purchase rights (in shares)	8,214	11,200	15,524
ESPP [Member]
Effect of potentially dilutive securities:
Employee stock options and purchase rights (in shares)	41	0	0

Summary of Significant Accounting Policies

12 Months Ended

Dec. 31, 2012

Accounting Policies [Abstract]

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Business—Fortinet, Inc. (“Fortinet”) was incorporated in Delaware in November 2000 and is a leading provider of network security appliances and UTM network security solutions to enterprises, service providers and governmental entities worldwide. Fortinet’s solutions are designed to integrate multiple levels of security protection, including firewall, virtual private networking, application control, antivirus, intrusion prevention, web filtering, anti-spam and WAN acceleration.

Basis of Presentation and Preparation—The consolidated financial statements of Fortinet and its wholly owned subsidiaries (collectively, the “Company,” “we,” “us” or “our”) have been prepared in accordance with U.S. GAAP. All intercompany transactions and balances have been eliminated in consolidation.

During fiscal 2012, we recorded a $0.9 million non-recurring cumulative out-of-period adjustment, relating to fiscal 2011, to reflect a true-up related to forfeitures of stock awards granted to employees. The adjustment resulted in lower stock-based compensation expense and higher operating income and net income during fiscal 2012. We believe the impact of the adjustment is not material to the current or prior fiscal periods.

Use of Estimates—The preparation of consolidated financial statements in accordance with U.S. GAAP requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. Such management estimates include implicit service periods for revenue recognition, litigation and settlement costs and other loss contingencies, sales returns and allowances, reserve for bad debt, inventory valuation, warranty reserve, the accounting for income taxes, including the determination of the timing of the establishment or release of our valuation allowance related to deferred tax asset balances and reserves for uncertain tax positions and the accounting for business combinations. We base our estimates on historical experience and also on assumptions that we believe are reasonable. Actual results could differ from those estimates.

Certain Significant Risks and Uncertainties—We are subject to certain risks and uncertainties that could have a material adverse effect on our future financial position or results of operations, such as the following: changes in level of demand for our products and services, the timing and success of new product and service introductions by us or our competitors, price and sales competition and our ability to adapt to changing market conditions and dynamics such as changes in end-customer, distributor or reseller requirements or market needs, changes in expenses caused, for example, by fluctuations in foreign currency exchange rates, management of inventory, internal control over financial reporting, market acceptance of our new products and services, demand for UTM products and services in general, seasonality, failure of our channel partners to perform or other disruption in our channel, the quality of our products and services and the market perception of our response to new viruses or security breaches, general economic conditions, challenges in doing business outside of the United States, changes in customer relationships, litigation, or claims against us based on intellectual property, patent, product regulatory or other factors (Note 9), product obsolescence, and our ability to attract and retain qualified employees.

We rely on sole suppliers and independent contract manufacturers for certain of our components and one third-party logistics company for distribution of certain of our products. The inability of any of these parties to fulfill our supply and logistics requirements could negatively impact our future operating results.

Concentration of Credit Risk—Financial instruments that subject us to concentrations of credit risk consist primarily of cash, cash equivalents, short-term and long-term investments, and accounts receivable. We maintain our cash and cash equivalents in fixed income securities with major financial institutions, which our management assesses to be of high credit quality, in order to limit the exposure of each investment. Deposits held with banks may exceed the amount of insurance provided on such deposits.

Credit risk with respect to accounts receivable in general is diversified due to the number of different entities comprising our customer base and their location throughout the world. We perform ongoing credit evaluations of our customers and generally do not require collateral on accounts receivable. We maintain reserves for estimated potential credit losses.

As of December 31, 2012 and December 31, 2011, no single customer accounted for more than 10% of net accounts receivable.

During fiscal 2012, one customer accounted for 11% of total net revenues. During fiscal 2011 and 2010, no single customer accounted for more than 10% of total net revenues.

Financial Instruments and Fair Value—We apply fair value accounting for all financial assets and liabilities and non-financial assets and liabilities that are recognized or disclosed at fair value in the financial statements on a recurring basis. Due to their short-term nature, the carrying amounts reported in the consolidated financial statements approximate the fair value for accounts receivable, accounts payable, accrued compensation, and other current liabilities.

Comprehensive Income—Comprehensive income includes certain changes in equity from non-owner sources that are excluded from net income. Specifically, cumulative foreign currency translation adjustments, unrealized gains and losses on available-for-sale investments, and unrealized gains and losses on derivatives are included in comprehensive income.

Foreign Currency Translation and Transaction Gains and Losses—Assets and liabilities of foreign subsidiaries are translated into U.S. dollars using the exchange rates in effect at the balance sheet dates and revenue and expenses are translated using average exchange rates during the period. The resulting foreign translation adjustments are recorded in accumulated other comprehensive income. Foreign currency transaction losses of $0.5 million, $0.4 million and $0.8 million, are included in other expense, net for fiscal 2012, 2011 and 2010, respectively.

Cash, Cash Equivalents and Available-for-sale Investments—We consider all highly liquid investments, purchased with original maturities of three months or less, to be cash equivalents. Cash and cash equivalents consist of balances with banks, and highly liquid investments in money market funds, commercial paper, and certificates of deposit and term deposits.

We classify our investments as available-for-sale at the time of purchase since it is our intent that these investments are available for current operations, and include these investments on our balance sheet as either short-term or long-term investments depending on their maturity at the time of purchase. Investments with original maturities greater than three months that mature less than one year from the consolidated balance sheet date are classified as short-term investments. Investments with maturities greater than one year from the consolidated balance sheet date are classified as long-term investments.

Investments are considered to be impaired when a decline in fair value is judged to be other-than-temporary. We consult with our investment managers and consider available quantitative and qualitative evidence in evaluating potential impairment of our investments on a quarterly basis. If the cost of an individual investment exceeds its fair value, we evaluate, among other factors, general market conditions, the duration and extent to which the fair value is less than cost, and our intent and ability to hold the investment. Once a decline in fair value is determined to be other-than-temporary, an impairment charge is recorded and a new cost basis in the investment is established.

For debt securities in an unrealized loss position which is deemed to be other-than-temporary, the difference between the security’s then-current amortized cost basis and fair value is separated into (i) the amount of the impairment related to the credit loss (i.e., the credit loss component) and (ii) the amount of the impairment related to all other factors (i.e., the non-credit loss component). The credit loss component is recognized in earnings. The non-credit loss component is recognized in accumulated other comprehensive loss.

Inventory—Inventory is recorded at the lower of cost (using the first-in, first-out method) or market, after we give appropriate consideration to obsolescence and inventory in excess of anticipated future demand. In assessing the ultimate recoverability of inventory, we are required to make estimates regarding future customer demand, the timing of new product introductions, economic trends and market conditions. If the actual product demand is significantly lower than forecasted, we could be required to record additional inventory write-downs, which could have an adverse impact on our gross margins and profitability.

Property and Equipment—Property and equipment are stated at cost. Depreciation is computed using the straight-line method over the estimated useful lives of the assets, generally one to three years. Evaluation units are transferred from inventory at cost and are amortized over one year from the date of transfer. Leasehold improvements are amortized over the shorter of the estimated useful lives of the improvements or the lease term.

Impairment of Long-Lived Assets—We evaluate events and changes in circumstances that could indicate carrying amounts of long-lived assets, including intangible assets, may not be recoverable. When such events or changes in circumstances occur, we assess the recoverability of long-lived assets by determining whether the carrying value of such assets will be recovered through undiscounted expected future cash flows. If the total of the future undiscounted cash flows is less than the carrying amount of those assets, we record an impairment charge in the period in which we make the determination. If such assets are considered to be impaired, the impairment to be recognized is measured by the amount by which the carrying amount of the assets exceeds the fair value of the assets.

Deferred Revenue—Deferred revenue consists of amounts that have been invoiced but that have not yet been recognized as revenue.

Income Taxes—We record income taxes using the asset and liability method, which requires the recognition of deferred tax assets and liabilities for the expected future tax consequences of events that have been recognized in our financial statements or tax returns. In estimating future tax consequences, generally all expected future events other than enactments or changes in the tax law or rates are considered. We assess the likelihood that some portion or all of our deferred tax assets will be recovered from future taxable income within the respective jurisdictions, and to the extent we believe that recovery does not meet the “more-likely-than-not” standard, based solely on its technical merits as of the reporting date, we establish a valuation allowance.

We account for uncertain tax positions in accordance with U.S. GAAP, which defines the confidence level that a tax position must meet in order to be recognized in the financial statements. The tax effects of a position are recognized only if it is “more likely than not” to be sustained based solely on its technical merits as of the reporting date. We consider many factors when evaluating and estimating our tax positions and tax benefits, which may require periodic adjustments and which may not accurately anticipate actual outcomes.

We operate in various tax jurisdictions and are subject to audit by various tax authorities. We provide for tax contingencies whenever it is deemed more likely than not that a tax asset has been impaired or a tax liability has been incurred for events such as tax claims or changes in tax laws. Tax contingencies are based upon their technical merits, relevant tax law and the specific facts and circumstances as of each reporting period. Changes in facts and circumstances could result in material changes to the amounts recorded for such tax contingencies.

Stock-Based Compensation Expense—We have elected to use the Black-Scholes option pricing model to determine the fair value of our employee stock options and ESPP. The fair value of RSUs is based on the closing market price of our common stock on the date of grant.

Advertising Expense—Advertising costs are expensed when incurred and is included in operating expenses in the accompanying consolidated statements of operations. Our advertising expenses were not significant for any periods presented.

Research and Development Costs—Research and development costs are expensed as incurred.

Software Development Costs—The costs to develop software have not been capitalized as we believe our current software development process is essentially completed concurrent with the establishment of technological feasibility.

Revenue Recognition—In October 2009, the FASB amended the accounting standards for multiple deliverable revenue arrangements to provide guidance on how the deliverables in an arrangement should be separated and eliminates the use of the residual method. The new accounting standards also require an entity to allocate revenue using the relative selling price method. The new accounting standards establish a hierarchy of evidence to determine the stand-alone selling price of a deliverable based on VSOE, TPE, and the BESP. If VSOE is available, it would be used to determine the selling price of a deliverable. If VSOE is not available, the entity would determine whether TPE is available. If so, TPE must be used to determine the selling price. If TPE is not available, then the BESP would be used. The new accounting standards amended industry specific revenue accounting guidance for software and software related transactions to exclude from its scope tangible products containing software components and non-software components that function together to deliver the product’s essential functionality.

This guidance did not generally change the units of accounting for our revenue transactions. Most non-software products and services qualify as separate units of accounting because they have value to the customer on a standalone basis and our revenue arrangements generally do not include a right of return relative to delivered products.

The majority of our products are hardware appliances containing software components that function together to provide the essential functionality of the product, therefore, our hardware appliances are considered non-software deliverables and are no longer within the scope of industry-specific software revenue recognition guidance.

Our product revenue also includes software products that may operate on the hardware appliances, but are not considered essential to the functionality of the hardware and continue to be subject to industry-specific software revenue recognition guidance, which remains unchanged. Certain of our software, when sold with our appliances, is considered essential to its functionality and as a result is no longer accounted for under industry-specific software revenue recognition guidance. However, this same software, if sold separately, is accounted for under industry-specific software revenue recognition guidance.

For all transactions originating or materially modified after December 31, 2010, we recognize revenue in accordance with the new accounting standards. Certain arrangements with multiple deliverables may continue to have software deliverables that are subject to industry-specific software revenue recognition guidance along with non-software deliverables that are subject to the new accounting standards. When a sales arrangement contains multiple elements, such as hardware appliances, software, customer support services, and/or professional services, we allocate revenue to each element based on the aforementioned selling price hierarchy. In multiple element arrangements where software is more-than-incidental, revenue is allocated to each separate unit of accounting for each of the non-software deliverables and to the software deliverables as a group using the relative selling prices of each of the deliverables in the arrangement based on the selling price hierarchy in the new revenue recognition accounting guidance.

VSOE of fair value for elements of an arrangement is based upon the normal pricing and discounting practices for those services when sold separately. In determining VSOE, we require that a substantial majority of the selling prices for a service fall within a reasonably narrow pricing range, generally evidenced by a substantial majority of such historical stand-alone transactions falling within a reasonably narrow range of the median rates. In addition, we consider major segments, geographies, customer classifications, and other variables in determining VSOE.

We are typically not able to determine TPE for our products or services. TPE is determined based on competitor prices for similar deliverables when sold separately. Generally, our go-to-market strategy differs from that of our peers and our offerings contain a significant level of differentiation such that the comparable pricing of products with similar functionality cannot be obtained. Furthermore, we are unable to reliably determine what similar competitor products’ selling prices are on a stand-alone basis.

For our hardware appliances, we use BESP as our selling price. For our support and other services, we generally use VSOE as our selling price. When we are unable to establish a selling price using VSOE for our support and other services, we use BESP in our allocation of arrangement consideration. The objective of BESP is to determine the price at which we would transact a sale if the product or service were sold on a stand-alone basis. We determine BESP for a product or service by considering multiple factors including, but not limited to, cost of products, gross margin objectives, pricing practices, geographies, customer classes and distribution channels. We review our BESP estimates on a quarterly basis to coincide with our VSOE review process.

We recognize revenue for our software sales based on industry-specific software revenue recognition guidance. Under industry-specific software revenue recognition guidance, we use the residual method to recognize revenue when a product agreement includes one or more elements to be delivered and VSOE of fair value for all undelivered elements exists. If evidence of the fair value of one or more undelivered elements does not exist, all revenue is generally deferred and recognized when delivery of those elements occurs or when fair value can be established. When the undelivered element for which we do not have VSOE of fair value is support, revenue for the entire arrangement is recognized ratably over the support period.

We derive revenue from sales of products, including appliances and software, and services, including subscription, support and other services. Our appliances include operating system software that is integrated into the appliance hardware and is deemed essential to its functionality. As a result, we account for revenue in accordance with the new revenue recognition accounting guidance and all related interpretations.

Revenue is recognized when all of the following criteria have been met:


•	Persuasive evidence of an arrangement exists. Binding contracts or purchase orders are generally used to determine the existence of an arrangement.


•	Delivery has occurred. Delivery occurs when we fulfill an order and title and risk of loss has been transferred or upon delivery of the service contract registration code.


•	The fee is fixed or determinable. We assess whether the fee is fixed or determinable based on the payment terms associated with the transaction. In the event payment terms differ from our standard business practices, the fees are deemed to be not fixed or determinable and revenue is recognized when the payments become due, provided the remaining criteria for revenue recognition have been met.


•	Collectability is probable. We assess collectability based primarily on creditworthiness as determined by credit checks and analysis, as well as payment history. Payment terms generally range from 30 to 90 days from invoice date.

For arrangements which include end-customer acceptance criteria, revenue is recognized upon acceptance. We recognize product revenue on sales to distributors that have no general right of return and direct sales to end-customers upon shipment, once all other revenue recognition criteria have been met. Certain distributors that stock our products are granted stock rotation rights as well as rebates for sales of our products. The arrangement fee for this group of distributors is not fixed and determinable when products are shipped and revenue is therefore deferred and recognized upon sell-through. Substantially all of our products have been sold in combination with services, which consist of subscriptions and/or support. Subscription services provide access to our antivirus, intrusion prevention, web filtering, and anti-spam functionality. Support services include rights to unspecified software upgrades, maintenance releases and patches, telephone and Internet access to technical support personnel, and hardware support.

The subscription and support services start on the date the customer registers the appliance. The customer is then entitled to service for the stated contractual period beginning on the registration date.

We offer certain sales incentives to channel partners. We reduce revenue for estimates of sales returns and allowances. Additionally, in limited circumstances we may permit end-customers, distributors and resellers to return our products, subject to varying limitations, for a refund within a reasonably short period from the date of purchase. We estimate and record reserves for sales incentives and sales returns based on historical experience.

Accounts Receivable—Trade accounts receivable are recorded at the invoiced amount, net of allowances for doubtful accounts and reserves for sales returns and allowances. The allowance for doubtful accounts is based on our assessment of the collectability of customer accounts. We regularly review the allowance by considering factors such as historical experience, credit quality, age of the accounts receivable balances and current economic conditions that may affect a customer’s ability to pay. The reserve for sales returns and allowances is based on specific criteria including agreements to provide rebates and other factors known at the time, as well as estimates of the amount of goods shipped that will be returned. To determine the adequacy of the reserves for sales returns and allowances, we analyze historical experience of actual rebates and returns as well as current product return information.

Warranties—We generally provide a 1-year warranty on hardware products and a 90-day warranty on software. A provision for estimated future costs related to warranty activities is recorded as a component of cost of product revenues when the product revenues are recognized, based upon historical product failure rates and historical costs incurred in correcting product failures. In the event we change our warranty reserve estimates, the resulting charge against future cost of sales or reversal of previously recorded charges may materially affect our gross margins and operating results.

Accrued warranty activities are summarized as follows ($ amounts in 000’s):



	Fiscal Year
	2012		2011		2010
Accrued warranty balance—beginning of the period	2,582		1,878		2,257
Warranty costs incurred	(2,669	)	(1,778	)	(1,337	)
Provision for warranty for the year	2,639		2,103		1,069
Changes in prior period estimates	(243	)	379		(111	)
Accrued warranty balance—end of the period	2,309		2,582		1,878

Foreign Currency Derivatives—Our sales contracts are primarily denominated in U.S. dollars and therefore substantially all of our revenue is not subject to foreign currency translation risk. However, a substantial portion of our operating expenses incurred outside the U.S. are denominated in foreign currencies and are subject to fluctuations due to changes in foreign currency exchange rates, particularly changes in the CAD. To help protect against significant fluctuations in value and the volatility of future cash flows caused by changes in currency exchange rates, we engage in foreign currency risk management activities to hedge balance sheet items denominated in CAD. We do not use these contracts for speculative or trading purposes. All of the derivative instruments are with high quality financial institutions and we monitor the creditworthiness of these parties. These contracts typically have maturities between one and three months. We record changes in the fair value of forward exchange contracts related to balance sheet accounts as other expense, net in the consolidated statement of operations.

Additionally, independent of any hedging activities, fluctuations in foreign currency exchange rates may cause us to recognize transaction gains and losses in our consolidated statements of operations. Our hedging activities are intended to reduce, but not eliminate, the impact of currency exchange rate movements. As our hedging activities are relatively short-term in nature, long-term material changes in the value of the U.S. dollar versus the CAD, EUR, GBP or JPY could adversely impact our operating expenses in the future.

The notional amount of forward exchange contracts to hedge balance sheet accounts as of December 31, 2012 was (amounts in 000’s):



	Buy/Sell	Notional
To hedge balance sheet accounts:
Currency
CAD	Buy	17,968

Recently Adopted Accounting Pronouncements

In May 2011, the FASB issued ASU No. 2011-04, Amendments to Achieve Common Fair Value Measurement and Disclosure Requirements in U.S. GAAP and IFRS (Topic 820) - Fair Value Measurement (“ASU 2011-04”), to provide a consistent definition of fair value and ensure that the fair value measurement and disclosure requirements are similar between U.S. GAAP and IFRS. ASU 2011-04 changes certain fair value measurement principles and enhances the disclosure requirements particularly for Level 3 fair value measurements. We adopted ASU 2011-04 in the first quarter of fiscal 2012. The measurement provisions of this guidance did not impact our consolidated financial statements.

In June 2011, the FASB issued ASU No. 2011-05, Comprehensive Income (Topic 220)-Presentation of Comprehensive Income (“ASU 2011-05”), to require an entity to present the total of comprehensive income, the components of net income, and the components of other comprehensive income either in a single continuous statement of comprehensive income or in two separate but consecutive statements. ASU 2011-05 eliminates the option to present the components of other comprehensive income as part of the statement of stockholders’ equity. We adopted ASU 2011-05 in the first quarter of fiscal 2012 and applied it retrospectively. We elected to present the comprehensive income in two separate but consecutive statements within our consolidated financial statements.

Stock Plans (Details) - USD ($) $ / shares in Units, $ in Thousands		12 Months Ended
	Nov. 17, 2009	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2000	Jan. 02, 2011	Jan. 28, 2008
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock reserved for future issuances		49,183,000
Income tax benefit from employee stock option plans		$ 5,870	$ 3,822	$ 1,924
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]
Stock-based compensation expense		$ 30,690	$ 19,015	$ 9,315
Stock Options and Restricted Stock Units, Outstanding [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock reserved for future issuances		19,401,000
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value		$ 172,220
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]
Expected term in years		4 years 7 months 6 days		4 years 7 months 6 days
Volatility, minimum		46.00%	40.00%	38.00%
Volatility, maximum		52.00%	57.00%	43.00%
Risk-free interest rate, minimum		0.70%	0.60%	1.10%
Risk-free interest rate, maximum		0.90%	2.00%	2.40%
Dividend rate (%)		0.00%	0.00%	0.00%
Estimated fair value		$ 11.13	$ 8.10	$ 3.59
Stock-based compensation expense		$ 24,506	$ 17,416	$ 9,315
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Balance - Beginning (in shares)		21,389,000	22,489,000	34,410,000
Granted (in shares)		(3,401,000)	(6,526,000)	(4,832,000)
Forfeited (in shares)		(1,441,000)	(1,397,000)	(1,825,000)
Exercised (in shares)		4,778,000	6,229,000	14,928,000
Balance - Ending (in shares)		18,571,000	21,389,000	22,489,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward]
Balance - Beginning (in dollars per share)		$ 9.14	$ 4.21	$ 2.53
Granted (in dollars per share)		26.38	21.05	9.70
Forfeited (in dollars per share)		19.31	11.79	5.56
Exercised (in dollars per share)		5.69	3.21	1.95
Balance - Ending (in dollars per share)		12.40	9.14	4.21
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Weighted-average fair value per share granted		$ 11.13	$ 8.10	$ 3.59
Intrinsic value of options exercised		$ 92,323	$ 113,590	$ 117,934
Options vested and expected to vest, Outstanding (in shares)		18,342,000
Options vested and expected to vest, Weighted average exercise price (in dollars per share)		$ 12.23
Options vested and expected to vest, Weighted average remaining contractual life (in years)		4 years 1 month 17 days
Options vested and expected to vest, Aggregate intrinsic value		$ 179,182
Options exercisable, Outstanding (in shares)		11,343,000
Options exercisable, Weighted average exercise price (in dollars per share)		$ 6.90
Options exercisable, Weighted average remaining contractual life (in years)		3 years 3 months 22 days
Options exercisable, Aggregate intrinsic value		$ 161,616
Compensation cost not yet recognized		$ 65,700
Compensation cost not yet recognized period of recognition		2 years 7 months 6 days
Total fair value of awards vested		$ 25,350	$ 11,800	8,482
Employee Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized		7,423,167
Share-based Compensation Arrangement by Share-based Payment Award, Maximum Employee Subscription Rate			15.00%
Purchase Price of Common Stock As Percentage Of Lower Of Fair Market Value Of Common Stock On First Day Of Offering Period Or Last Day Of Purchase Period			85.00%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]
Stock-based compensation expense		$ 4,470	$ 1,599	0
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]
Stock-based compensation expense		1,714	$ 0	$ 0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Compensation cost not yet recognized		$ 19,100
Compensation cost not yet recognized period of recognition		3 years 7 months 6 days
Reserved for Future Option, Restricted Stock Unit and Other Equity Award Grants [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock reserved for future issuances		22,359,000
Reserved for Future ESPP Issuances [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock reserved for future issuances		7,423,000
Minimum [Member] \| Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]
Expected term in years			4 years 1 month 6 days
Maximum [Member] \| Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]
Expected term in years			4 years 7 months 6 days
Stock Plans 2000, 2008 and 2009 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock reserved for future issuances		41,760,014
Stock Plan, 2000 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized					21,500,000
Stock Plan, 2000 [Member] \| Stock Options, Nonqualifying [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Percent of Market Price, Purchase or Offering Date					85.00%
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period					4 years
Stock Plan, 2008 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized							5,000,000
Stock Plan, 2009 [Member] \| Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized	21,000,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized Before Adjustments	9,000,000
Individual Owning 10 Percent or More of Stock [Member] \| Stock Plan, 2000 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Percent of Market Price, Purchase or Offering Date					110.00%
Share-based Compensation Arrangement by Share-based Payment Award, Minimum Stock Ownership Percent Triggering Early Award Expiration					10.00%
Individual Owning 10 Percent or More of Stock [Member] \| Stock Plan, 2000 [Member] \| Stock Options, Nonqualifying [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Expiration Period				5 years
Individual Owning 10 Percent or More of Stock [Member] \| Stock Plan, 2008 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Percent of Market Price, Purchase or Offering Date							110.00%
Share-based Compensation Arrangement by Share-based Payment Award, Minimum Stock Ownership Percent Triggering Early Award Expiration							10.00%
Individual Owning 10 Percent or More of Stock [Member] \| Stock Plan, 2009 [Member] \| Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Percent of Market Price, Purchase or Offering Date	110.00%
Share-based Compensation Arrangement by Share-based Payment Award, Minimum Stock Ownership Percent Triggering Early Award Expiration	10.00%
Share-based Compensation Arrangement by Share-based Payment Award, Award Expiration Period	5 years
Employee [Member] \| Stock Plan, 2008 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Percent of Market Price, Purchase or Offering Date							100.00%
Employee [Member] \| Stock Plan, 2009 [Member] \| Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Percent of Market Price, Purchase or Offering Date	100.00%
Directors and Other Service Providers [Member] \| Stock Plan, 2008 [Member] \| Stock Options, Nonqualifying [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Percent of Market Price, Purchase or Offering Date							100.00%
Directors and Other Service Providers [Member] \| Stock Plan, 2009 [Member] \| Stock Options, Nonqualifying [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Percent of Market Price, Purchase or Offering Date	100.00%
Individual Owning 10 Percent or Less of Stock [Member] \| Stock Plan, 2000 [Member] \| Stock Options, Nonqualifying [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Expiration Period					10 years
Individual Owning 10 Percent or Less of Stock [Member] \| Stock Plan, 2009 [Member] \| Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Expiration Period	7 years
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	4 years
Share-based Compensation Arrangement by Share-based Payment Award, Maximum Stock Ownership Percent Triggering Early Award Expiration	10.00%
Share-based Compensation Award Authorized Number Changes, Lesser of Fixed Amount of Shares [Member] \| Stock Plan, 2009 [Member] \| Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Increase to Number of Shares Authorized, Maximum						7,000,000
Share-based Compensation Award Authorized Number Changes, Lesser of Outstanding Shares on Last Day of Preceeding Year [Member] \| Stock Plan, 2009 [Member] \| Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Increase to Number of Shares Authorized, Maximum, Percent						5.00%

Income Taxes

12 Months Ended

Dec. 31, 2012

Income Tax Disclosure [Abstract]

INCOME TAXES

Income before income taxes consisted of the following ($ amounts in 000’s):



	Fiscal Year
	2012	2011	2010
Domestic	95,730	85,411	50,556
Foreign	9,266	6,662	5,785
Total income before income taxes	104,996	92,073	56,341

The provision for income taxes consisted of the following ($ amounts in 000’s):



	Fiscal Year
	2012		2011		2010
Current:
Federal	43,765		34,856		10,633
State	1,992		2,785		(82	)
Foreign	2,266		1,402		9,298
Total current	48,023		39,043		19,849
Deferred:
Federal	(9,677	)	(9,326	)	(4,119	)
State	(186	)	(136	)	(626	)
Foreign	—		—		(8	)
Total deferred	(9,863	)	(9,462	)	(4,753	)
Provision for income taxes	38,160		29,581		15,096

The provision for income taxes differs from the amount computed by applying the statutory federal income tax rate as follows ($ amounts in 000’s):



	Fiscal Year
	2012		2011		2010
Tax at federal statutory tax rate	36,749		32,225		19,719
Stock-based compensation expense	1,570		(2,457	)	(2,308	)
State taxes—net of federal benefit	1,186		2,222		(1,098	)
Research and development credit	(144	)	(887	)	(948	)
Foreign income taxed at different rates	(1,845	)	(929	)	(1,066	)
Other	644		(593	)	797
Total provision for income taxes	38,160		29,581		15,096

Significant permanent differences arise from the portion of stock-based compensation expense that is not expected to generate a tax deduction, such as stock-based compensation expense on stock option grants to certain foreign employees, offset by the actual tax benefits in the current periods from disqualifying dispositions of shares held by our U.S. employees. For stock options exercised by our U.S. employees, we receive an income tax benefit calculated as the difference between the fair market value of the stock issued at the time of the exercise and the option price, tax effected. Due to this, our income taxes payable have been reduced by the tax benefits from employee stock plan awards. The income tax benefits for fiscal 2012, 2011 and 2010 associated with dispositions from employee stock transactions of $14.3 million, $26.2 million and $9.3 million, respectively, were recognized as additional paid-in capital.

As of December 31, 2012, we did not recognize California net operating losses and California tax credits relating to excess tax benefits for stock-based compensation expense of $13.2 million and $0.8 million, respectively. Unrecognized excess tax benefits will be accounted for as a credit to additional paid-in capital when realized through a reduction in income taxes payable.

The tax effects of temporary differences that give rise to significant portions of the deferred tax assets as of the years ended are presented below ($ amount in 000’s):



	December 31, 2012	December 31, 2011
Deferred tax assets:
Net operating loss carryforward	587	1,830
Deferred revenue	36,438	31,234
Nondeductible reserves and accruals	13,437	13,698
Depreciation and amortization	920	684
General business credit carryforward	1,381	396
Stock-based compensation expense	9,413	6,247
Other	12	12
Total deferred tax assets	62,188	54,101

In assessing the realizability of deferred tax assets, we considered whether it is more likely than not that some portion or all of our deferred tax assets will be realized. This realization is dependent upon the generation of future taxable income during the periods in which those temporary differences become deductible. We concluded that it is more likely than not that we would be able to realize the benefit of our deferred tax assets in the future.

As of December 31, 2012, we had various state net operating loss carryforwards of $24.1 million. These state net operating loss carryforwards will begin to expire in the year 2016. The state tax authorities impose significant restrictions on the utilization of net operating loss tax credit carryforwards. Our ability to use our net operating loss carryforwards to offset any future taxable income may be subject to limitations if equity transactions occur that would result in a change of ownership. As of December 31, 2012, we have tax credit carryforwards available to offset our future state taxes of $1.2 million. The state credits carry forward indefinitely.

Our policy with respect to undistributed foreign subsidiaries’ earnings is to consider those earnings to be indefinitely reinvested and, accordingly, no related provision of U.S. federal and state income taxes has been provided on such earnings. Upon distribution of those earnings in the form of dividends or otherwise, we will be subject to both U.S. income taxes (subject to an adjustment for foreign tax credits) and withholding taxes in the various foreign countries. As of December 31, 2012, we have not recorded U.S. income tax on $30.3 million of foreign earnings that are deemed to be permanently reinvested overseas.

As of December 31, 2012, we had $27.8 million of unrecognized tax benefits, of which, if recognized, $27.2 million would favorably affect our effective tax rate. Our policy is to include accrued interest and penalties related to uncertain tax benefits in income tax expense. As of December 31, 2012, December 30, 2011 and December 30, 2010, accrued interest and penalties were $1.5 million, $0.6 million and $0.2 million, respectively.

The aggregate changes in the balance of unrecognized tax benefits are as follows ($ amounts in 000’s):



	Fiscal Year
	2012		2011		2010
Unrecognized tax benefits, beginning of year	19,269		12,083		3,387
Gross increases for tax positions related to the current year	7,550		9,049		8,696
Gross increases for tax positions related to the prior year	1,479		—		—
Gross decreases for tax positions related to the prior year	(490	)	(1,863	)	—
Unrecognized tax benefits, end of year	27,808		19,269		12,083

As of December 31, 2012, December 31, 2011 and December 30, 2010, $28.8 million, $19.1 million and $11.2 million, respectively, of the amounts reflected above were recorded as a liability and included in other non-current liabilities in our consolidated balance sheet.

As of December 31, 2012, there were no unrecognized tax benefits that we expect would change significantly over the next 12 months.

We file income tax returns in the U.S. federal jurisdiction, and various U.S. state and foreign jurisdictions. As we have net operating loss carryforwards for the state jurisdictions, the statute of limitations is open for all tax years. Generally, we are no longer subject to non-U.S. income tax examinations by tax authorities for tax years prior to 2006. During 2012, the States of California and Florida completed their audits of our income tax returns for the years 2008-2009 and 2008-2010, respectively, without any adverse material impact to our tax liability.

During January 2013, the U.S. Federal Research and Development Tax Credit was reinstated retroactively to fiscal 2012. The U.S. Federal Research and Development Tax Credit benefit will be recorded in the first quarter of fiscal 2013, the period of enactment. The State of California will be conducting an audit of our income tax returns for fiscal 2010 and fiscal 2011.

- Definition

The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(h))
-URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32559-109319

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 15
-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32718-109319

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 9
-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32639-109319

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32537-109319

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 109
-Paragraph 136, 172
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 08
-Paragraph h
-Article 4

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 109
-Paragraph 43, 44, 45, 46, 47, 48, 49
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
REVENUE:
Product	$ 248,948	$ 197,408	$ 135,140
Services	274,043	220,268	172,046
Ratable and other revenue	10,648	15,900	17,510
Total revenue	533,639	433,576	324,696
COST OF REVENUE:
Product	93,971	73,201	51,944
Services	50,682	35,486	26,967
Ratable and other revenue	2,767	4,911	6,295
Total cost of revenue	147,420	113,598	85,206
GROSS PROFIT:
Product	154,977	124,207	83,196
Services	223,361	184,782	145,079
Ratable and other revenue	7,881	10,989	11,215
Total gross profit	386,219	319,978	239,490
OPERATING EXPENSES:
Research and development	81,078	63,577	49,801
Sales and marketing	179,155	145,532	111,968
General and administrative	25,511	21,965	22,380
Total operating expenses	285,744	231,074	184,149
OPERATING INCOME	100,475	88,904	55,341
INTEREST INCOME	5,006	3,523	1,815
OTHER EXPENSE—Net	(485)	(354)	(815)
INCOME BEFORE INCOME TAXES	104,996	92,073	56,341
PROVISION FOR INCOME TAXES	38,160	29,581	15,096
NET INCOME	$ 66,836	$ 62,492	$ 41,245
Net income per share attributable to common stockholders (Note 7):
Basic (in dollars per share)	$ 0.42	$ 0.41	$ 0.29
Diluted (in dollars per share)	$ 0.40	$ 0.38	$ 0.26
Weighted-average shares outstanding:
Basic (in shares)	158,074	152,581	140,726
Diluted (in shares)	166,329	163,781	156,406

Summary of Significant Accounting Policies , Concentration of Credit Risk (Details) - customers	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Concentration Risk [Line Items]
Number of customers accounting for 10% or more of concentration risk	1	0
Customer Concentration Risk [Member] \| Accounts Receivable [Member]
Concentration Risk [Line Items]
Concentration risk, benchmark	10.00%
Number of customers accounting for 10% or more of concentration risk	0	0
Customer Concentration Risk [Member] \| Sales Revenue [Member]
Concentration Risk [Line Items]
Concentration risk, benchmark		10.00%
Number of customers accounting for 10% or more of concentration risk			0
Percentage of revenue from a single customer	11.00%

Net Income Per Share

12 Months Ended

Dec. 31, 2012

Earnings Per Share [Abstract]

NET INCOME PER SHARE

INCOME PER SHARE

Basic net income per share is computed by dividing net income by the weighted-average number of shares of common stock outstanding during the period. Diluted net income per share is computed by dividing net income by the weighted-average number of shares of common stock outstanding, plus the dilutive effects of stock options, warrants, RSUs, and ESPP. Potentially dilutive shares of common stock are determined by applying the treasury stock method.

A reconciliation of the numerator and denominator used in the calculation of basic and diluted net income per share is as follows ($ and share amounts in 000’s, except per share amounts):



	Fiscal Year
	2012	2011	2010
Numerator:
Net income	66,836	62,492	41,245

Denominator:
Basic shares:
Weighted-average common stock outstanding-basic	158,074	152,581	140,726
Diluted shares:
Weighted-average common stock outstanding-basic	158,074	152,581	140,726
Effect of potentially dilutive securities:
Stock options	8,214	11,200	15,524
ESPP	41	—	—
Warrants to purchase common stock	—	—	156
Weighted-average shares used to compute diluted net income per share	166,329	163,781	156,406
Net income per share:
Basic	0.42	0.41	0.29
Diluted	0.40	0.38	0.26



	Fiscal Year
	2012	2011	2010
Stock options	7,183	3,893	3,006
RSUs	291	—	—
ESPP	321	122	—
	7,795	4,015	3,006

Stock Plans

12 Months Ended

Dec. 31, 2012

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

STOCK PLANS

Our stock-based compensation plans include the 2000 Stock Option Plan (the “2000 Plan”), the 2008 Stock Plan (the “2008 Plan”), the 2009 Equity Incentive Plan (the “2009 Plan”), and the ESPP.

2000 Stock Plan—During 2000, we adopted the 2000 Plan, which includes both incentive and non-statutory stock options. Under the 2000 Plan, we may grant options to purchase up to 21,500,000 shares of common stock to employees, directors and other service providers at prices not less than the fair market value at date of grant for incentive stock options and not less than 85% of fair market value for non-statutory options. Options granted to a person who, at the time of the grant, owns more than 10% of the voting power of all classes of stock shall be at no less than 110% of the fair market value and expire five years from the date of grant. All other options generally have a contractual term of 10 years. Options generally vest over four years.

2008 Stock Plan—On January 28, 2008, our board of directors approved the 2008 Plan and French Sub-Plan, which includes both incentive and non-statutory stock options. The maximum aggregate number of shares which may be subject to options and sold under the 2008 Plan and the French Sub-Plan is 5,000,000 shares, plus any shares that, as of the date of stockholder approval of the 2008 Plan, have been reserved but not issued under the 2000 Plan or shares subject to stock options or similar awards granted under the 2000 Plan that expire or otherwise terminate without having been exercised in full or that are forfeited to or repurchased by us.

Under the 2008 Plan and the French Sub-Plan, we may grant options to employees, directors and other service providers. In the case of an incentive stock option granted to an employee, who at the time of grant, owns stock representing more than 10% of the total combined voting power of all classes of stock, the exercise price shall be no less than 110% of the fair market value per share on the date of grant and expire five years from the date of grant, and options granted to any other employee, the per share exercise price shall be no less than 100% of the fair market value per share on the date of grant. In the case of a nonstatutory stock option and options granted to other service providers, the per share exercise price shall be no less than 100% of the fair market value per share on the date of grant.

2009 Equity Incentive Plan—On November 17, 2009, our board of directors approved the 2009 Plan and French Sub-Plan, which includes awards of stock options, stock appreciation rights, restricted stock, RSUs, and performance units or performance shares. The maximum aggregate number of shares that may be issued under the 2009 Plan is 9,000,000 shares, plus any shares subject to stock options or similar awards granted under the 2008 Plan and the 2000 Plan that expire or otherwise terminate without having been exercised in full and shares issued pursuant to awards granted under the 2008 Plan and the 2000 Plan that are forfeited to or repurchased by us, with the maximum number of shares to be added to the 2009 Plan pursuant to such terminations, forfeitures and repurchases not to exceed 21,000,000 shares. The shares may be authorized, but unissued or reacquired common stock. The number of shares available for issuance under the 2009 Plan will be increased on the first day of each fiscal year beginning with fiscal 2011, in an amount equal to the lesser of (i) 7,000,000 shares, (ii) five percent (5%) of the outstanding shares on the last day of the immediately preceding fiscal year, or (iii) such number of shares determined by our board of directors. Under the 2009 Plan and the French Sub-Plan, we may grant awards to employees, directors and other service providers. In the case of an incentive stock option granted to an employee who, at the time of the grant, owns stock representing more than 10% of the voting power of all classes of stock, the exercise price shall be no less than 110% of the fair market value per share on the date of grant and expire five years from the date of grant, and options granted to any other employee, the per share exercise price shall be no less than 100% of the fair market value per share on the date of grant. In the case of a non statutory stock option and options granted to other service providers, the per share exercise price shall be no less than 100% of the fair market value per share on the date of grant. Options granted to individuals owning less than 10% of the total combined voting power of all classes of stock generally have a contractual term of seven years and options generally vest over four years.

As of December 31, 2012, a total of 41,760,014 shares were authorized and available for issuance under the 2000 Plan, 2008 Plan and 2009 Plan.

Prior to August 2012, we had a practice of granting stock options to employees, non-employees and members of our board of directors. Since August 2012, we have granted RSUs to employees, non-employees, and members of our board of directors. RSUs generally vest ratably over four years. We will issue shares of common stock as the periodic vesting requirements are satisfied. The value of RSUs is determined based on the number of shares granted and the closing market price of our common stock on the date of grant. We use the Black-Scholes option pricing model to determine the fair value of our stock options. Compensation expense related to RSUs and stock options is recognized over the vesting period.

Employee Stock Purchase Plan—In June 2011, our stockholders approved the ESPP. The purpose of the ESPP is to provide eligible employees with the opportunity to purchase common stock through regular, systematic payroll deductions, up to a maximum of 15% of employees’ compensation for each purchase period at purchase prices equal to 85% of the lesser of the fair market value of our common stock at the first trading date of the applicable offering period or the purchase date. As of December 31, 2012, 7,423,167 shares were authorized and available for issuance under the ESPP.

Employee Stock Options

In determining the fair value of our employee stock options, we use the Black-Scholes option pricing model, which employs the following assumptions.

Valuation method—We estimate the fair value of stock options granted.

Expected Term—The expected term represents the period that our stock-based awards are expected to be outstanding. As we do not have sufficient historical experience for determining the expected term of the stock option awards granted, we have based our expected term on the simplified method available.

Expected Volatility—The computation of expected volatility for the periods presented includes the historical and implied stock volatility of comparable companies from a representative peer group selected based on industry and market capitalization data and our weighted historical volatility following our initial public offering in November 2009.

Fair Value of Common Stock—The fair value of our common stock is the closing sales price of the common stock (or the closing bid, if no sales were reported) on the effective grant date.

Risk-Free Interest Rate—We base the risk-free interest rate used in the Black-Scholes valuation model on the implied yield available on U.S. Treasury zero-coupon issues with an equivalent remaining term.

Expected Dividend—The expected dividend weighted-average assumption is based on our current expectations about our anticipated dividend policy.

The following table summarizes the weighted-average assumptions relating to our employee stock options:



	Fiscal Year
	2012	2011	2010
Expected term in years	4.6	4.1 – 4.6	4.6
Volatility (%)	46 – 52	40 – 57	38 – 43
Risk-free interest rate (%)	0.7 – 0.9	0.6 – 2.0	1.1 – 2.4
Dividend rate (%)	—	—	—

The following table summarizes the stock option activity and related information for the periods presented below (in 000’s, except per share amounts, exercise prices and contractual life):



	Options Outstanding
	Number of Shares		Weighted- Average Exercise Price ($)	Weighted- Average Remaining Contractual Life (Years)	Aggregate Intrinsic Value ($)
Balance—December 31, 2009	34,410		2.53
Granted	4,832		9.70
Forfeited	(1,825	)	5.56
Exercised	(14,928	)	1.95
Balance—December 31, 2010	22,489		4.21
Granted	6,526		21.05
Forfeited	(1,397	)	11.79
Exercised	(6,229	)	3.21
Balance—December 31, 2011	21,389		9.14
Granted	3,401		26.38
Forfeited	(1,441	)	19.31
Exercised	(4,778	)	5.69
Balance—December 31, 2012	18,571		12.40		172,220
Options vested and expected to vest—December 31, 2012	18,342		12.23	4.13	179,182
Options exercisable—December 31, 2012	11,343		6.90	3.31	161,616

The aggregate intrinsic value represents the pre-tax difference between the exercise price of stock options and the quoted market price of our common stock on December 31, 2012, for all in-the-money options. As of December 31, 2012, total compensation expense related to unvested stock options granted to employees but not yet recognized was $65.7 million, net of estimated forfeitures. This expense is expected to be amortized on a straight-line basis over a weighted-average period of 2.6 years.

Additional information related to our stock options is summarized below ($ amounts in 000's, except per share amounts):



	Fiscal Year
	2012	2011	2010
Weighted-average fair value per share granted	11.13	8.10	3.59
Intrinsic value of options exercised	92,323	113,590	117,934
Fair value of options vested	25,350	11,800	8,482

The following table summarizes information about outstanding and exercisable stock options as of December 31, 2012, as follows (in 000’s, except per share amounts, exercise prices and contractual life):



	Options Outstanding			Options Exercisable
Range of Exercise Prices ($)	Number Outstanding	Weighted- Average Remaining Contractual Life (Years)	Weighted- Average Exercise Price ($)	Number Exercisable	Weighted- Average Exercise Price ($)
0.25–1.20	1,883	2.41	0.87	1,883	0.87
3.74–4.65	6,224	2.72	3.76	6,086	3.75
5.50–6.25	195	3.82	5.62	126	5.64
8.43–8.99	2,056	4.24	8.56	1,176	8.53
15.28	389	4.85	15.28	137	15.28
20.13–24.96	5,335	5.47	21.40	1,821	20.88
26.70	2,489	6.13	26.70	114	26.70
	18,571			11,343

Restricted Stock Units

The following table summarizes the activity and related information for RSUs for the period presented below (in 000’s, except per share amounts):



	Restricted Stock Units Outstanding
	Number of Shares		Weighted-Average Grant-Date-Fair Value per Share ($)
Balance—December 31, 2011	—		—
Granted	873		23.79
Forfeited	(43	)	24.76
Vested	—		—
Balance—December 31, 2012	830		23.73
RSUs expected to vest—December 31, 2012	762		23.75

As of December 31, 2012, total compensation expense related to unvested RSUs that were granted to employees and non-employees under the 2009 Plan, but not yet recognized, was $19.1 million, net of estimated forfeitures. This expense is expected to be amortized on a straight-line basis over a weighted-average vesting period of 3.6 years.

Shares Reserved for Future Issuances

The following table presents the common stock reserved for future issuance (in 000’s):



	December 31, 2012
Outstanding stock options and RSUs	19,401
Reserved for future option, RSU and other equity award grants	22,359
Reserved for future ESPP issuances	7,423
Total common stock reserved for future issuances	49,183

Employee Stock Purchase Plan

In determining the fair value of our ESPP, we use the Black-Scholes option pricing model that employs the following weighted-average assumptions:



	Fiscal Year
	2012	2011	2010
Expected term in years	0.5	0.5	—
Volatility (%)	53.7	59.9	—
Risk-free interest rate (%)	0.1	0.1	—
Dividend rate (%)	—	—	—

Additional information related to the ESPP is provided below (in 000's, except per share amounts):



	Fiscal Year
	2012	2011	2010
Weighted-average fair value per share granted ($)	7.06	6.56	—
Shares issued under the ESPP	577	—	—
Weighted-average price per share issued ($)	18.90	—	—

Stock-based Compensation Expense

Stock-based compensation expense is included in costs and expenses as follows ($ amounts in 000’s):



	Fiscal Year
	2012	2011	2010
Cost of product revenue	333	183	101
Cost of services revenue	3,736	1,790	929
Research and development	9,226	4,691	2,339
Sales and marketing	12,793	9,325	3,810
General and administrative	4,602	3,026	2,136
Total stock-based compensation expense	30,690	19,015	9,315

The following table summarizes stock-based compensation expense by award type ($ amounts in 000’s)



	Fiscal Year
	2012	2011	2010
Stock options	24,506	17,416	9,315
RSUs	1,714	—	—
ESPP	4,470	1,599	—
Total stock-based compensation expense	30,690	19,015	9,315

Total income tax benefit from employee stock option plans that is recognized in the consolidated statements of operations is as follows ($ amounts in 000's):



	Fiscal Year
	2012	2011	2010
Income tax benefit from employee stock option plans	5,870	3,822	1,924

- Definition

The entire disclosure for compensation-related costs for equity-based compensation, which may include disclosure of policies, compensation plan details, allocation of equity compensation, incentive distributions, equity-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 50
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6406099&loc=d3e25284-112666

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 40
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6418621&loc=d3e17540-113929

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5444-113901

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 14

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 123R
-Paragraph 64, 65, A240
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Statement of Position (SOP)
-Number 93-6
-Paragraph 53
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2012

Commitments and Contingencies Disclosure [Abstract]

Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]

The aggregate future non-cancelable minimum rental payments on operating leases as of December 31, 2012 are as follows ($ amounts in 000’s):



	Rental Payment
Fiscal Years:
2013	8,775
2014	5,087
2015	2,394
2016	430
2017	147
Total	16,833

Inventory (Tables)

12 Months Ended

Dec. 31, 2012

Inventory Disclosure [Abstract]

Inventory [Table Text Block]

Inventory consisted of the following ($ amounts in 000’s):



	December 31, 2012	December 31, 2011
Raw materials	4,958	3,447
Finished goods	16,102	12,802
Inventory	21,060	16,249

Commitments and Contingencies , Minimum Operating Lease Payments (Details) $ in Thousands	Dec. 31, 2012 USD ($)
Fiscal Years:
2013	$ 8,775
2014	5,087
2015	2,394
2016	430
2017	147
Total	$ 16,833

Financial Instruments and Fair Value , Fair Value Measurements (Details) - USD ($) $ in Thousands	Dec. 31, 2012	Dec. 31, 2011
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Less Than 12 Months, Fair Value	$ 141,470	$ 294,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses	162	1,846
12 Months or Greater, Fair Value	(5,010)	0
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	146,480	294,000
U.S. government and agency securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Less Than 12 Months, Fair Value		10,996
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses		2
12 Months or Greater, Fair Value		0
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value		10,996
Corporate debt securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Less Than 12 Months, Fair Value	133,006	258,159
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses	156	1,832
12 Months or Greater, Fair Value	(5,010)	0
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	138,016	258,159
Commercial paper [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Less Than 12 Months, Fair Value	8,464	9,279
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses	6	5
12 Months or Greater, Fair Value	0	0
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	8,464	9,279
Municipal bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Less Than 12 Months, Fair Value		8,067
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses		5
12 Months or Greater, Fair Value		0
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value		8,067
Certificates of deposit and term deposits [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Less Than 12 Months, Fair Value		7,499
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses		2
12 Months or Greater, Fair Value		0
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value		7,499
Estimate of Fair Value [Member] \| Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Assets, Fair Value Disclosure	659,231	511,998
Estimate of Fair Value [Member] \| Recurring [Member] \| Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Assets, Fair Value Disclosure	39,871	31,438
Estimate of Fair Value [Member] \| Recurring [Member] \| Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Assets, Fair Value Disclosure	619,360	480,560
Estimate of Fair Value [Member] \| U.S. government and agency securities [Member] \| Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, Fair Value Disclosure	0	38,908
Estimate of Fair Value [Member] \| U.S. government and agency securities [Member] \| Recurring [Member] \| Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, Fair Value Disclosure	0	0
Estimate of Fair Value [Member] \| U.S. government and agency securities [Member] \| Recurring [Member] \| Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, Fair Value Disclosure	0	38,908
Estimate of Fair Value [Member] \| Corporate debt securities [Member] \| Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, Fair Value Disclosure	531,391	337,497
Estimate of Fair Value [Member] \| Corporate debt securities [Member] \| Recurring [Member] \| Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, Fair Value Disclosure	0
Estimate of Fair Value [Member] \| Corporate debt securities [Member] \| Recurring [Member] \| Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, Fair Value Disclosure	531,391	337,497
Estimate of Fair Value [Member] \| Commercial paper [Member] \| Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, Fair Value Disclosure	41,994	64,890
Estimate of Fair Value [Member] \| Commercial paper [Member] \| Recurring [Member] \| Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, Fair Value Disclosure	0
Estimate of Fair Value [Member] \| Commercial paper [Member] \| Recurring [Member] \| Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, Fair Value Disclosure	41,994	64,890
Estimate of Fair Value [Member] \| Municipal bonds [Member] \| Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, Fair Value Disclosure	36,870	20,504
Estimate of Fair Value [Member] \| Municipal bonds [Member] \| Recurring [Member] \| Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, Fair Value Disclosure	0
Estimate of Fair Value [Member] \| Municipal bonds [Member] \| Recurring [Member] \| Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, Fair Value Disclosure	36,870	20,504
Estimate of Fair Value [Member] \| Certificates of deposit and term deposits [Member] \| Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, Fair Value Disclosure	9,105	18,761
Estimate of Fair Value [Member] \| Certificates of deposit and term deposits [Member] \| Recurring [Member] \| Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, Fair Value Disclosure	0
Estimate of Fair Value [Member] \| Certificates of deposit and term deposits [Member] \| Recurring [Member] \| Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, Fair Value Disclosure	9,105	18,761
Estimate of Fair Value [Member] \| Money market funds [Member] \| Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, Fair Value Disclosure	39,871	31,438
Estimate of Fair Value [Member] \| Money market funds [Member] \| Recurring [Member] \| Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, Fair Value Disclosure	39,871	31,438
Estimate of Fair Value [Member] \| Money market funds [Member] \| Recurring [Member] \| Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, Fair Value Disclosure	0
Reported as [Member] \| Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Assets, Fair Value Disclosure	659,231	511,998
Reported as [Member] \| Recurring [Member] \| Cash equivalents [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, Fair Value Disclosure	42,620	45,301
Reported as [Member] \| Recurring [Member] \| Short-term investments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, Fair Value Disclosure	290,719	318,283
Reported as [Member] \| Recurring [Member] \| Long-term investments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, Fair Value Disclosure	$ 325,892	$ 148,414

Summary of Significant Accounting Policies , Cash, Cash Equivalents and Available-for-sale Investments (Details)	12 Months Ended
	Dec. 31, 2012
Accounting Policies [Abstract]
Short-term investments, minimum original maturity	3 months
Short-term investments, maximum original maturity	1 year
Long-term investments, minimum original maturity	1 year

Commitments and Contingencies (Details) $ in Millions	1 Months Ended	12 Months Ended
Commitments and Contingencies (Details) $ in Millions	Nov. 30, 2012 USD ($)	Dec. 31, 2012 USD ($) number_of_parties	Dec. 31, 2011 USD ($)	Dec. 31, 2010 USD ($)
Commitments and Contingencies Disclosure [Abstract]
Rent expense		$ 8.7	$ 8.2	$ 7.0
Number of patents involved in litigation \| number_of_parties		2
Settlement agreement, amount paid	$ 1.0

Property and Equipment—Net (Tables)

12 Months Ended

Dec. 31, 2012

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment [Table Text Block]

Property and equipment consisted of the following ($ amounts in 000’s):



	December 31, 2012		December 31, 2011
Land	13,895		—
Building and building improvements	610		—
Evaluation units	18,322		13,912
Computer equipment and software	17,176		12,219
Furniture and fixtures	1,501		1,307
Leasehold improvements and tooling	5,354		4,381
Total property and equipment	56,858		31,819
Less: accumulated depreciation	(31,220	)	(23,853	)
Property and equipment—net	25,638		7,966

Net Income Per Share , Anti Dilutive Securities (Details) - shares shares in Thousands	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive securities (in shares)	7,795	4,015	3,006
Stock Options [Member] \| Stock Compensation Plan [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive securities (in shares)	7,183	3,893	3,006
Restricted Stock Units (RSUs) [Member] \| Stock Compensation Plan [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive securities (in shares)	291	0	0
ESPP [Member] \| Stock Compensation Plan [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive securities (in shares)	321	122	0

- Definition

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Antidilution
-URI http://asc.fasb.org/extlink&oid=6505113

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Diluted Earnings Per Share
-URI http://asc.fasb.org/extlink&oid=6510752

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Contingent Stock Agreement
-URI http://asc.fasb.org/extlink&oid=6508534

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 128
-Paragraph 40
-Subparagraph c
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 128
-Paragraph 13, 14
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Emerging Issues Task Force (EITF)
-Number 07-4
-Paragraph 4
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 128
-Paragraph 171
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Label	Element	Value
Allowance for Doubtful Accounts [Member]
Valuation Allowances and Reserves, Balance	us-gaap_ValuationAllowancesAndReservesBalance	$ 303,000

Deferred Revenues (Tables)

12 Months Ended

Dec. 31, 2012

Deferred Revenue Disclosure [Abstract]

Deferred Revenue, by Arrangement, Disclosure [Table Text Block]

Deferred revenue consisted of the following ($ amounts in 000’s):



	December 31, 2012	December 31, 2011
Product	5,411	5,817
Services	348,548	272,843
Ratable and other revenue	9,226	16,173
Total deferred revenue	363,185	294,833
Reported As:
Short-term	247,268	206,928
Long-term	115,917	87,905
Total deferred revenue	363,185	294,833

Income Taxes , Unrecognized Tax Benefits (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Income Tax Contingency [Line Items]
Unrecognized tax benefits that would favoraby affect effective tax rate	$ 27,200
Accrued interest and penalties related to uncertain tax benefits	1,500	$ 600	$ 200
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Unrecognized tax benefits, beginning of year	19,269	12,083	3,387
Gross increases for tax positions related to the current year	7,550	9,049	8,696
Gross increases for tax positions related to the prior year	1,479	0	0
Gross decreases for tax positions related to the prior year	(490)	(1,863)	0
Unrecognized tax benefits, end of year	27,808	19,269	12,083
Liability for uncertain tax positions	$ 28,800	$ 19,100	$ 11,200

Segment Information (Tables)

12 Months Ended

Dec. 31, 2012

Segment Reporting [Abstract]

Revenue and property and equipment by geographic region [Table Text Block]

The following tables set forth revenue and property and equipment by geographic region ($ amounts in 000’s):



	Fiscal Year
Revenue	2012	2011	2010
Americas:
United States	145,369	120,456	92,097
Other Americas	71,687	52,038	31,864
Total Americas	217,056	172,494	123,961
EMEA	184,175	152,385	121,604
APAC	132,408	108,697	79,131
Total revenue	533,639	433,576	324,696


Property and Equipment	December 31, 2012	December 31, 2011
Americas:
United States	18,764	2,225
Canada	4,376	4,062
Other Americas	87	33
Total Americas	23,227	6,320
EMEA	1,213	805
APAC	1,198	841
Total property and equipment—net	25,638	7,966

Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2012

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Finite-Lived Intangible Assets by Major Class [Table Text Block]

The following table presents the detail of our existing intangible assets with definite lives included in other assets ($ amounts in 000’s):



	December 31, 2012			December 31, 2011
	Gross	Accumulated Amortization	Net	Gross	Accumulated Amortization	Net
Existing technology	3,541	1,424	2,117	1,772	394	1,378

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]

he following table summarizes estimated future amortization expense of purchased intangible assets with definite lives for future fiscal years ($ amounts in 000’s):



	Amount
Fiscal Years:
2013	1,130
2014	707
2015	275
2016	5
Total	2,117

Summary of Significant Accounting Policies (Policies)

12 Months Ended

Dec. 31, 2012

Accounting Policies [Abstract]

Basis of Presentation and Preparation

Use of Estimates

Certain Significant Risks and Uncertainties

Concentration of Credit Risk

Financial Instruments and Fair Value

Comprehensive Income

Foreign Currency Translation and Transaction Gains and Losses

Cash, Cash Equivalents and Available-for-sale Investments

Inventory

Property and Equipment

Impairment of Long-Lived Assets

Deferred Revenue and Revenue Recognition

Revenue is recognized when all of the following criteria have been met:


•	Persuasive evidence of an arrangement exists. Binding contracts or purchase orders are generally used to determine the existence of an arrangement.


•	Delivery has occurred. Delivery occurs when we fulfill an order and title and risk of loss has been transferred or upon delivery of the service contract registration code.


•	The fee is fixed or determinable. We assess whether the fee is fixed or determinable based on the payment terms associated with the transaction. In the event payment terms differ from our standard business practices, the fees are deemed to be not fixed or determinable and revenue is recognized when the payments become due, provided the remaining criteria for revenue recognition have been met.


•	Collectability is probable. We assess collectability based primarily on creditworthiness as determined by credit checks and analysis, as well as payment history. Payment terms generally range from 30 to 90 days from invoice date.

Deferred Revenue—Deferred revenue consists of amounts that have been invoiced but that have not yet been recognized as revenue.

Income Taxes

Stock-Based Compensation Expense

Advertising Expense

Research and Development Costs

Research and Development Costs—Research and development costs are expensed as incurred.

Software Development Costs

Accounts Receivable

Warranties

Foreign Currency Derivatives

Financial Instruments and Fair Value (Tables)

12 Months Ended

Dec. 31, 2012

Dec. 31, 2011

Financial Instruments and Fair Value [Abstract]

Summary of Investments [Table Text Block]

The following table summarizes our investments ($ amounts in 000’s):



	December 31, 2012
	Amortized Cost	Unrealized Gains	Unrealized Losses		Fair Value
Corporate debt securities	529,738	1,814	(161	)	531,391
Commercial paper	39,229	22	(6	)	39,245
Municipal bonds	36,787	83	—		36,870
Certificates of deposit and term deposits	9,099	6	—		9,105
Total available-for-sale securities	614,853	1,925	(167	)	616,611

	December 31, 2011
	Amortized Cost	Unrealized Gains	Unrealized Losses		Fair Value
U.S. government and agency securities	38,900	10	(2	)	38,908
Corporate debt securities	339,110	219	(1,832	)	337,497
Commercial paper	51,025	7	(5	)	51,027
Municipal bonds	20,473	36	(5	)	20,504
Certificates of deposit and term deposits	18,762	1	(2	)	18,761
Total available-for-sale securities	468,270	273	(1,846	)	466,697

Schedule of Unrealized Loss on Investments [Table Text Block]

The following table shows the gross unrealized losses and the related fair values of our investments that have been in a continuous unrealized loss position, as of December 31, 2012 ($ amounts in 000’s):



	Less Than 12 Months			12 Months or Greater			Total
	Fair Value	Unrealized Losses		Fair Value	Unrealized Losses		Fair Value	Unrealized Losses
Corporate debt securities	133,006	(156	)	5,010	(5	)	138,016	(161	)
Commercial paper	8,464	(6	)	—	—		8,464	(6	)
Total available-for-sale securities	141,470	(162	)	5,010	(5	)	146,480	(167	)



	Less Than 12 Months			12 Months or Greater		Total
	Fair Value	Unrealized Losses		Fair Value	Unrealized Losses	Fair Value	Unrealized Losses
U.S. government and agency securities	10,996	(2	)	—	—	10,996	(2	)
Corporate debt securities	258,159	(1,832	)	—	—	258,159	(1,832	)
Commercial paper	9,279	(5	)	—	—	9,279	(5	)
Municipal bonds	8,067	(5	)	—	—	8,067	(5	)
Certificates of deposit and term deposits	7,499	(2	)	—	—	7,499	(2	)
Total available-for-sale securities	294,000	(1,846	)	—	—	294,000	(1,846	)

Investments Classified by Contractual Maturity Date [Table Text Block]

The contractual maturities of our investments are as follows ($ amounts in 000’s)



	December 31, 2012	December 31, 2011
Due within one year	290,719	318,283
Due within one to three years	325,892	148,414
Total	616,611	466,697

Fair Value, by Balance Sheet Grouping and Measurement Inputs, Disclosure [Table Text Block]

The following table presents the fair value of our financial assets measured at fair value on a recurring basis as of December 31, 2012 and December 31, 2011 ($ amounts in 000’s):



	December 31, 2012			December 31, 2011
	Aggregate Fair Value	Quoted Prices in Active Markets For Identical Assets	Significant Other Observable Remaining Inputs	Aggregate Fair Value	Quoted Prices in Active Markets For Identical Assets	Significant Other Observable Remaining Inputs
		(Level 1)	(Level 2)		(Level 1)	(Level 2)
Assets:
U.S. government and agency securities	—	—	—	38,908	—	38,908
Corporate debt securities	531,391	—	531,391	337,497	—	337,497
Commercial paper	41,994	—	41,994	64,890	—	64,890
Municipal bonds	36,870	—	36,870	20,504	—	20,504
Certificates of deposit and term deposits	9,105	—	9,105	18,761	—	18,761
Money market funds	39,871	39,871	—	31,438	31,438	—
Total	659,231	39,871	619,360	511,998	31,438	480,560
Reported as:
Cash equivalents	42,620			45,301
Short-term investments	290,719			318,283
Long-term investments	325,892			148,414
Total	659,231			511,998

- Definition

Tabular disclosure of assets, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, by class that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3).

+ References + Details

Consolidated Statements of Stockholders' Equity - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock [Member]	Treasury Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Retained Earnings [Member]
Balance, shares at Dec. 31, 2009		135,034	(1,409)
Balance at Dec. 31, 2009	$ 142,452	$ 135	$ (2,995)	$ 204,200	$ 1,084	$ (59,972)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of stock options and warrants (in shares)		15,138
Exercise of stock options and warrants	29,109	$ 15		29,094
Stock-based compensation	9,315			9,315
Income tax benefit from employee stock option plans	9,235			9,235
Net unrealized gain (loss) on investments—net of taxes	98			0	98
Net unrealized gain (loss) on derivatives qualifying as cash flow hedges	74				74
Net change in cumulative translation adjustments	925				925
Net income	41,245					41,245
Balance, shares at Dec. 31, 2010		150,172	(1,409)
Balance at Dec. 31, 2010	232,453	$ 150	$ (2,995)	251,844	2,181	(18,727)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of stock options (in shares)		6,229
Exercise of stock options	19,968	$ 6		19,962
Stock-based compensation	19,015			19,015
Income tax benefit from employee stock option plans	26,205			26,205
Net unrealized gain (loss) on investments—net of taxes	(1,153)				(1,153)
Net unrealized gain (loss) on derivatives qualifying as cash flow hedges	(74)				(74)
Net change in cumulative translation adjustments	(552)				(552)
Net income	62,492					62,492
Balance, shares at Dec. 31, 2011		156,401	(1,409)
Balance at Dec. 31, 2011	358,354	$ 156	$ (2,995)	317,026	402	43,765
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of stock options (in shares)		4,779
Exercise of stock options	27,183	$ 5		27,178
Issuance of common stock in connection with employee stock purchase plan (in shares)		577
Issuance of common stock in connection with employee stock purchase plan	10,904	$ 1		10,903
Stock-based compensation	30,690			30,690
Income tax benefit from employee stock option plans	14,278			14,278
Net unrealized gain (loss) on investments—net of taxes	2,165				2,165
Net change in cumulative translation adjustments	524				524
Net income	66,836					66,836
Balance, shares at Dec. 31, 2012		161,757	(1,409)
Balance at Dec. 31, 2012	$ 510,934	$ 162	$ (2,995)	$ 400,075	$ 3,091	$ 110,601

Consolidated Balance Sheets Parenthetical - USD ($) $ in Thousands	Dec. 31, 2012	Dec. 31, 2011
Allowance for doubtful accounts	$ 115	$ 336
Common Stock, par value	$ 0.001	$ 0.001
Common Stock, shares authorized	300,000,000	300,000,000
Common Stock, shares issued	161,757,000	156,401,000
Common Stock, shares outstanding	160,348,000	154,992,000

Employee Benefit Plan	12 Months Ended
Employee Benefit Plan	Dec. 31, 2012
Employee Benefit Plan [Abstract]
EMPLOYEE BENEFIT PLAN	EMPLOYEE BENEFIT PLAN The 401(k) tax-deferred savings plan (the “401(k) Plan”) permits participants to make contributions by salary deduction pursuant to Section 401(k) of the Internal Revenue Code of 1986, as amended. Under the 401(k) Plan, participating employees may defer a portion of their pre-tax earnings, up to the IRS annual contribution limit. In Canada, we have a Group Registered Retirement Savings Plan program (the “RRSP Plan”) which permits participants to make tax deductible contributions up to the maximum contribution limits under the Income Tax Act. Our board of directors approved 50% matching contributions on employee contributions up to 4% of each employee’s eligible earnings. Our matching contributions to the 401(k) Plans and RRSP for fiscal 2012 and 2011 were $1.8 million and $1.5 million, respectively.

Deferred Revenues

12 Months Ended

Dec. 31, 2012

Deferred Revenue Disclosure [Abstract]

DEFERRED REVENUES

DEFERRED REVENUE

Deferred revenue consisted of the following ($ amounts in 000’s):



	December 31, 2012	December 31, 2011
Product	5,411	5,817
Services	348,548	272,843
Ratable and other revenue	9,226	16,173
Total deferred revenue	363,185	294,833
Reported As:
Short-term	247,268	206,928
Long-term	115,917	87,905
Total deferred revenue	363,185	294,833

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2012	Dec. 31, 2011
CURRENT ASSETS:
Cash and cash equivalents	$ 122,975	$ 71,990
Short-term investments	290,719	318,283
Accounts receivable, net of allowance for doubtful accounts of $115 and $336 at December 31, 2012 and December 31, 2011, respectively	107,642	95,522
Inventory	21,060	16,249
Deferred tax assets	13,663	7,578
Prepaid expenses and other current assets	13,215	13,948
Total current assets	569,274	523,570
PROPERTY AND EQUIPMENT—Net	25,638	7,966
DEFERRED TAX ASSET—Non-current	48,525	46,523
LONG-TERM INVESTMENTS	325,892	148,414
OTHER ASSETS	6,168	8,274
TOTAL ASSETS	975,497	734,747
CURRENT LIABILITIES:
Accounts payable	20,816	19,768
Accrued liabilities	22,263	15,971
Accrued payroll and compensation	28,957	24,197
Deferred revenue	247,268	206,928
Total current liabilities	319,304	266,864
DEFERRED REVENUE—Non-current	115,917	87,905
OTHER LIABILITIES	29,342	21,624
Total liabilities	464,563	376,393
COMMITMENTS AND CONTINGENCIES (Note 9)
STOCKHOLDERS' EQUITY:
Common stock, $0.001 par value — 300,000 shares authorized; 161,757 and 156,401 shares issued and 160,348 and 154,992 shares outstanding as of December 31, 2012 and December 31, 2011, respectively	162	156
Additional paid-in capital	400,075	317,026
Treasury stock	(2,995)	(2,995)
Accumulated other comprehensive income	3,091	402
Retained earnings	110,601	43,765
Total stockholders' equity	510,934	358,354
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ 975,497	$ 734,747

Deferred Revenues (Details) - USD ($) $ in Thousands	Dec. 31, 2012	Dec. 31, 2011
Deferred Revenue Arrangement [Line Items]
Short-term	$ 247,268	$ 206,928
Long-term	115,917	87,905
Total deferred revenue	363,185	294,833
Product [Member]
Deferred Revenue Arrangement [Line Items]
Total deferred revenue	5,411	5,817
Services [Member]
Deferred Revenue Arrangement [Line Items]
Total deferred revenue	348,548	272,843
Ratable and other revenue [Member]
Deferred Revenue Arrangement [Line Items]
Total deferred revenue	$ 9,226	$ 16,173

- Definition

The noncurrent portion of deferred revenue amount as of balance sheet date. Deferred revenue is a liability related to a revenue producing activity for which revenue has not yet been recognized, and is not expected to be recognized in the next twelve months. Generally, an entity records deferred revenue when it receives consideration from a customer before achieving certain criteria that must be met for revenue to be recognized in conformity with GAAP.

+ References + Details

Stock Plans , Restricted Stock Units Activity (Details) - Restricted Stock Units (RSUs) [Member] shares in Thousands	12 Months Ended
	Dec. 31, 2012 $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Balance—December 31, 2011 \| shares	0
Granted \| shares	873
Forfeited \| shares	(43)
Vested \| shares	0
Balance—December 31, 2012 \| shares	830
RSUs expected to vest—December 31, 2012 \| shares	762
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]
Balance, weighted-average grant-date fair value per share (in dollars per share)—December 31, 2011 \| $ / shares	$ 0.00
Granted, weighted-average grant-date fair value per share (in dollars per share) \| $ / shares	23.79
Forfeited, weighted-average grant-date fair value per share (in dollars per share) \| $ / shares	24.76
Vested, weighted-average grant-date fair value per share (in dollars per share) \| $ / shares	0.00
Balance, weighted-average grant-date fair value per share (in dollars per share)—December 31, 2012 \| $ / shares	23.73
RSUs expected to vest, weighted-average grant-date fair value per share (in dollars per share)—December 31, 2012 \| $ / shares	$ 23.75

Acquisitions (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
Acquisitions (Details) - USD ($) $ in Thousands	Sep. 30, 2012	Dec. 31, 2012	Dec. 31, 2011	Dec. 07, 2012	Mar. 08, 2012	Apr. 06, 2011
XDN, Inc [Member]
Business Acquisition [Line Items]
Total consideration				$ 500
Price allocated to indentifiable intangible assets				$ 500
IntruGuard Devices, Inc [Member]
Business Acquisition [Line Items]
Total consideration					$ 1,000
Amount withheld in escrow					400
Purchased tangible assets					53
Liabilities assumed					43
Purchased identifiable intangible assets					$ 900
Amortizable life of purchased indentifiable intangible assets		3 years
Released amounts previously withheld in escrow	$ 200
TalkSwitch Corp [Member]
Business Acquisition [Line Items]
Total consideration						$ 2,600
Purchased tangible assets						900
Liabilities assumed						100
Purchased identifiable intangible assets						$ 1,800
Amortizable life of purchased indentifiable intangible assets			3 years

Acquisitions	12 Months Ended
Acquisitions	Dec. 31, 2012
Business Combinations [Abstract]
ACQUISITIONS	ACQUISITIONS On December 7, 2012, we completed the acquisition of XDN, Inc. (“XDN”), a privately held company that provides cloud-based content delivery solutions, for a total consideration of $0.5 million. We accounted for this acquisition as a purchase of a business and, accordingly, the total purchase price was allocated to identifiable intangible assets acquired based on their estimated fair market value as of the acquisition date. The purchase price allocation resulted in purchased identifiable intangible assets of $0.5 million. Identifiable intangible assets consist of purchased technology. The fair value assigned to identifiable intangible assets acquired was determined using the market approach, which compares the value of the purchased assets to similar assets in similar lines of business. Purchased identifiable intangible assets are being amortized as cost of revenue on a straight-line basis over three years. The financial results of this acquisition are considered immaterial for purposes of pro forma financial disclosures. On March 8, 2012, we completed the acquisition of IntruGuard Devices, Inc. (“IntruGuard”), a supplier of Intelligent Availability Protection Systems, for a total consideration of $1.0 million. Of the total consideration, $0.4 million was withheld in escrow as security for IntruGuard’s indemnification obligations. We accounted for this acquisition as a purchase of a business and, accordingly, the total purchase price was allocated to tangible and identifiable intangible assets acquired and liabilities assumed based on their estimated fair market values as of the acquisition date. The purchase price allocation resulted in purchased tangible assets of $53,000 and liabilities of $43,000, and purchased identifiable intangible assets of $0.9 million. Identifiable intangible assets consist of purchased technology. The fair value assigned to identifiable intangible assets acquired was determined using the income approach, which discounts expected future cash flows to present value using estimates and assumptions determined by us. Purchased identifiable intangible assets are being amortized as cost of revenue on a straight-line basis over three years. Of the $0.4 million previously withheld in escrow, $0.2 million was released to the selling shareholders during the third quarter of fiscal 2012. The financial results of this acquisition are considered immaterial for purposes of pro forma financial disclosures. On April 6, 2011, we completed the acquisition of TalkSwitch Corp. (“TalkSwitch”), a privately held company that provides voice over IP phone system technology, for a cash payment of $2.6 million. We accounted for this acquisition as a purchase of a business and, accordingly, the total purchase price was allocated to TalkSwitch tangible and identifiable intangible assets acquired and liabilities assumed based on their estimated fair market values as of the acquisition date. The purchase price allocation resulted in purchased tangible assets of $0.9 million and liabilities of $0.1 million and purchased identifiable intangible assets of $1.8 million. Identifiable intangible assets consist of purchased technology. The fair value assigned to identifiable intangible assets acquired is determined using the income approach, which discounts expected future cash flows to present value using estimates and assumptions determined by us. Purchased identifiable intangible assets are being amortized on a straight-line basis over three years. The financial results of this acquisition are considered immaterial for purposes of pro forma financial disclosures.

- Definition

The entire disclosure for a business combination (or series of individually immaterial business combinations) completed during the period, including background, timing, and recognized assets and liabilities. The disclosure may include leverage buyout transactions (as applicable).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=7659399&loc=d3e1497-128463

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=7659399&loc=d3e1490-128463

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=7659399&loc=d3e1392-128463

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=7488404&loc=d3e7008-128479

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=7659399&loc=d3e1486-128463

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=7488404&loc=d3e6927-128479

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6910749&loc=d3e4845-128472

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=7659399&loc=d3e1500-128463

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=7659399&loc=d3e1524-128463

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=7488404&loc=d3e7000-128479

Reference 11: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 20
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-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6910749&loc=d3e4922-128472

Reference 12: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 13: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 20
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6910749&loc=d3e4926-128472

Reference 14: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
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-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=7488404&loc=d3e6996-128479

Reference 15: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=7659399&loc=d3e1383-128463

Reference 16: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Emerging Issues Task Force (EITF)
-Number 88-16
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 17: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 141R
-Paragraph F4
-Subparagraph e
-Appendix F

Reference 18: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 141
-Paragraph 51, 52
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 19: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 141R
-Paragraph 67-73
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Financial Instruments and Fair Value

12 Months Ended

Dec. 31, 2012

Financial Instruments and Fair Value [Abstract]

FINANCIAL INSTRUMENTS AND FAIR VALUE

The following table summarizes our investments ($ amounts in 000’s):



	December 31, 2012
	Amortized Cost	Unrealized Gains	Unrealized Losses		Fair Value
Corporate debt securities	529,738	1,814	(161	)	531,391
Commercial paper	39,229	22	(6	)	39,245
Municipal bonds	36,787	83	—		36,870
Certificates of deposit and term deposits	9,099	6	—		9,105
Total available-for-sale securities	614,853	1,925	(167	)	616,611

	December 31, 2011
	Amortized Cost	Unrealized Gains	Unrealized Losses		Fair Value
U.S. government and agency securities	38,900	10	(2	)	38,908
Corporate debt securities	339,110	219	(1,832	)	337,497
Commercial paper	51,025	7	(5	)	51,027
Municipal bonds	20,473	36	(5	)	20,504
Certificates of deposit and term deposits	18,762	1	(2	)	18,761
Total available-for-sale securities	468,270	273	(1,846	)	466,697



	Less Than 12 Months			12 Months or Greater			Total
	Fair Value	Unrealized Losses		Fair Value	Unrealized Losses		Fair Value	Unrealized Losses
Corporate debt securities	133,006	(156	)	5,010	(5	)	138,016	(161	)
Commercial paper	8,464	(6	)	—	—		8,464	(6	)
Total available-for-sale securities	141,470	(162	)	5,010	(5	)	146,480	(167	)



	Less Than 12 Months			12 Months or Greater		Total
	Fair Value	Unrealized Losses		Fair Value	Unrealized Losses	Fair Value	Unrealized Losses
U.S. government and agency securities	10,996	(2	)	—	—	10,996	(2	)
Corporate debt securities	258,159	(1,832	)	—	—	258,159	(1,832	)
Commercial paper	9,279	(5	)	—	—	9,279	(5	)
Municipal bonds	8,067	(5	)	—	—	8,067	(5	)
Certificates of deposit and term deposits	7,499	(2	)	—	—	7,499	(2	)
Total available-for-sale securities	294,000	(1,846	)	—	—	294,000	(1,846	)

The contractual maturities of our investments are as follows ($ amounts in 000’s)



	December 31, 2012	December 31, 2011
Due within one year	290,719	318,283
Due within one to three years	325,892	148,414
Total	616,611	466,697

Available-for-sale securities are reported at fair value, with unrealized gains and losses, net of tax, included as a separate component of stockholders’ equity and in total comprehensive income. Realized gains and losses on available-for-sale securities are included in other expense, net in our consolidated statements of operations.

Realized gains and losses from the sale of available-for-sale securities were not significant in any period presented.

Fair Value Accounting—We apply the following fair value hierarchy for disclosure of the inputs used to measure fair value. This hierarchy prioritizes the inputs into three broad levels as follows:

Level 1—Inputs are unadjusted quoted prices in active markets for identical assets or liabilities.

Level 2—Inputs are quoted prices for similar assets and liabilities in active markets or inputs that are observable for the assets or liabilities, either directly or indirectly through market corroboration, for substantially the full term of the financial instruments.

Level 3—Unobservable inputs based on our own assumptions used to measure assets and liabilities at fair value. The inputs require significant management judgment or estimation.

We measure the fair value of money market funds using quoted prices in active markets for identical assets. The fair value of all other financial instruments was based on quoted prices for similar asserts in active markets, or model driven valuations using significant inputs derived from or corroborated by observable market data.

We classify investments within Level 1 if quoted prices are available in active markets for identical securities.

We classify items within Level 2 if the investments are valued using model driven valuations using observable inputs such as quoted market prices, benchmark yields, reported trades, broker/dealer quotes or alternative pricing sources with reasonable levels of price transparency. Investments are held by custodians who obtain investment prices from a third-party pricing provider that incorporates standard inputs in various asset price models.

The following table presents the fair value of our financial assets measured at fair value on a recurring basis as of December 31, 2012 and December 31, 2011 ($ amounts in 000’s):



	December 31, 2012			December 31, 2011
	Aggregate Fair Value	Quoted Prices in Active Markets For Identical Assets	Significant Other Observable Remaining Inputs	Aggregate Fair Value	Quoted Prices in Active Markets For Identical Assets	Significant Other Observable Remaining Inputs
		(Level 1)	(Level 2)		(Level 1)	(Level 2)
Assets:
U.S. government and agency securities	—	—	—	38,908	—	38,908
Corporate debt securities	531,391	—	531,391	337,497	—	337,497
Commercial paper	41,994	—	41,994	64,890	—	64,890
Municipal bonds	36,870	—	36,870	20,504	—	20,504
Certificates of deposit and term deposits	9,105	—	9,105	18,761	—	18,761
Money market funds	39,871	39,871	—	31,438	31,438	—
Total	659,231	39,871	619,360	511,998	31,438	480,560
Reported as:
Cash equivalents	42,620			45,301
Short-term investments	290,719			318,283
Long-term investments	325,892			148,414
Total	659,231			511,998

We did not hold financial assets or liabilities which were recorded at fair value using inputs in the Level 3 category as of December 31, 2012 or December 31, 2011. There were no transfers between Level 1 and Level 2 of the fair value hierarchy during the year ended December 31, 2012 or December 31, 2011.

Schedule II

12 Months Ended

Dec. 31, 2011

Valuation and Qualifying Accounts [Abstract]

SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS

SCHEDULE II—VALUATION AND QUALIFYING ACCOUNTS



	Fiscal Year
	2012		2011		2010
	($ amounts in 000’s)
Allowance for Doubtful Accounts:
Beginning balance	336		303		367
Charged (credited) to costs and expenses	(126	)	159		8
Bad debt write-offs	(95	)	(126	)	(72	)
Ending balance	115		336		303

Inventory (Details) - USD ($) $ in Thousands	Dec. 31, 2012	Dec. 31, 2011
Inventory, Net [Abstract]
Raw materials	$ 4,958	$ 3,447
Finished goods	16,102	12,802
Inventory	$ 21,060	$ 16,249

Intangible Assets (Details) - Technology-Based Intangible Assets [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Finite-Lived Intangible Assets, Net [Abstract]
Gross	$ 3,541	$ 1,772
Accumulated Amortization	1,424	394
Total	2,117	1,378
Amortization expense	1,000	400	$ 0
Fiscal Years:
2013	1,130
2014	707
2015	275
2016	5
Total	$ 2,117	$ 1,378

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 66,836	$ 62,492	$ 41,245
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation and amortization	11,564	6,989	5,696
Amortization of investment premiums	12,962	12,515	7,349
Stock-based compensation expense	30,690	19,015	9,315
Excess tax benefit from employee stock option plans	(12,069)	(19,829)	(5,781)
Other non-cash items, net	881	22	14
Changes in operating assets and liabilities:
Accounts receivable—net	(12,120)	(23,246)	(17,784)
Inventory	(11,303)	(6,034)	(5,946)
Deferred tax assets	(9,254)	(7,874)	(4,278)
Prepaid expenses and other current assets	791	(2,915)	(3,685)
Other assets	2,470	227	255
Accounts payable	961	6,801	2,437
Accrued liabilities	301	1,765	2,363
Accrued payroll and compensation	4,599	4,773	5,465
Deferred revenue	68,292	42,177	50,701
Income taxes payable	28,265	35,964	16,017
Net cash provided by operating activities	183,866	132,842	103,383
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchase of investments	(601,087)	(516,906)	(416,376)
Sales of investments	26,268	44,503	10,451
Maturities of investments	415,440	311,824	125,929
Purchases of property and equipment	(22,083)	(3,624)	(3,776)
Payments made in connection with acquisitions	(1,249)	(2,623)	0
Change in restricted cash	0	0	62
Net cash provided by (used in) investing activities	(182,711)	(166,826)	(283,710)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from issuance of common stock	38,087	19,968	29,110
Offering costs paid in connection with initial public offering	0	0	(872)
Excess tax benefit from employee stock option plans	12,069	19,829	5,781
Net cash provided by financing activities	50,156	39,797	34,019
EFFECT OF EXCHANGE RATES ON CASH AND CASH EQUIVALENTS	(326)	(682)	709
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	50,985	5,131	(145,599)
CASH AND CASH EQUIVALENTS—Beginning of year	71,990	66,859	212,458
CASH AND CASH EQUIVALENTS—End of year	122,975	71,990	66,859
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION:
Cash paid (refunded) for income taxes	17,088	(305)	2,483
NON-CASH INVESTING AND FINANCING ACTIVITIES:
Purchase of property and equipment not yet paid	398	440	135
Liability incurred in connection with business acquisition	$ 201	$ 0	$ 0

Stock Plans (Tables)

12 Months Ended

Dec. 31, 2012

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions And Allocation of Recognized Period Costs [Table Text Block]



	Fiscal Year
	2012	2011	2010
Expected term in years	4.6	4.1 – 4.6	4.6
Volatility (%)	46 – 52	40 – 57	38 – 43
Risk-free interest rate (%)	0.7 – 0.9	0.6 – 2.0	1.1 – 2.4
Dividend rate (%)	—	—	—

Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]

Additional information related to our stock options is summarized below ($ amounts in 000's, except per share amounts):



	Fiscal Year
	2012	2011	2010
Weighted-average fair value per share granted	11.13	8.10	3.59
Intrinsic value of options exercised	92,323	113,590	117,934
Fair value of options vested	25,350	11,800	8,482

(in 000’s, except per share amounts, exercise prices and contractual life):



	Options Outstanding
	Number of Shares		Weighted- Average Exercise Price ($)	Weighted- Average Remaining Contractual Life (Years)	Aggregate Intrinsic Value ($)
Balance—December 31, 2009	34,410		2.53
Granted	4,832		9.70
Forfeited	(1,825	)	5.56
Exercised	(14,928	)	1.95
Balance—December 31, 2010	22,489		4.21
Granted	6,526		21.05
Forfeited	(1,397	)	11.79
Exercised	(6,229	)	3.21
Balance—December 31, 2011	21,389		9.14
Granted	3,401		26.38
Forfeited	(1,441	)	19.31
Exercised	(4,778	)	5.69
Balance—December 31, 2012	18,571		12.40		172,220
Options vested and expected to vest—December 31, 2012	18,342		12.23	4.13	179,182
Options exercisable—December 31, 2012	11,343		6.90	3.31	161,616

Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table Text Block]

outstanding and exercisable stock options as of December 31, 2012, as follows (in 000’s, except per share amounts, exercise prices and contractual life):



	Options Outstanding			Options Exercisable
Range of Exercise Prices ($)	Number Outstanding	Weighted- Average Remaining Contractual Life (Years)	Weighted- Average Exercise Price ($)	Number Exercisable	Weighted- Average Exercise Price ($)
0.25–1.20	1,883	2.41	0.87	1,883	0.87
3.74–4.65	6,224	2.72	3.76	6,086	3.75
5.50–6.25	195	3.82	5.62	126	5.64
8.43–8.99	2,056	4.24	8.56	1,176	8.53
15.28	389	4.85	15.28	137	15.28
20.13–24.96	5,335	5.47	21.40	1,821	20.88
26.70	2,489	6.13	26.70	114	26.70
	18,571			11,343

Schedule of Share-based Compensation, Restricted Stock Units Award Activity [Table Text Block]

The following table summarizes the activity and related information for RSUs for the period presented below (in 000’s, except per share amounts):



	Restricted Stock Units Outstanding
	Number of Shares		Weighted-Average Grant-Date-Fair Value per Share ($)
Balance—December 31, 2011	—		—
Granted	873		23.79
Forfeited	(43	)	24.76
Vested	—		—
Balance—December 31, 2012	830		23.73
RSUs expected to vest—December 31, 2012	762		23.75

Schedule of Shares Reserved for Future Issuance [Table Text Block]

The following table presents the common stock reserved for future issuance (in 000’s):



	December 31, 2012
Outstanding stock options and RSUs	19,401
Reserved for future option, RSU and other equity award grants	22,359
Reserved for future ESPP issuances	7,423
Total common stock reserved for future issuances	49,183

Schedule of Share-based Payment Award, Employee Stock Purchase Plan, Valuation Assumptions [Table Text Block]

In determining the fair value of our ESPP, we use the Black-Scholes option pricing model that employs the following weighted-average assumptions:



	Fiscal Year
	2012	2011	2010
Expected term in years	0.5	0.5	—
Volatility (%)	53.7	59.9	—
Risk-free interest rate (%)	0.1	0.1	—
Dividend rate (%)	—	—	—

Additional information related to the ESPP is provided below (in 000's, except per share amounts):



	Fiscal Year
	2012	2011	2010
Weighted-average fair value per share granted ($)	7.06	6.56	—
Shares issued under the ESPP	577	—	—
Weighted-average price per share issued ($)	18.90	—	—

Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block]

Stock-based compensation expense is included in costs and expenses as follows ($ amounts in 000’s):



	Fiscal Year
	2012	2011	2010
Cost of product revenue	333	183	101
Cost of services revenue	3,736	1,790	929
Research and development	9,226	4,691	2,339
Sales and marketing	12,793	9,325	3,810
General and administrative	4,602	3,026	2,136
Total stock-based compensation expense	30,690	19,015	9,315

The following table summarizes stock-based compensation expense by award type ($ amounts in 000’s)



	Fiscal Year
	2012	2011	2010
Stock options	24,506	17,416	9,315
RSUs	1,714	—	—
ESPP	4,470	1,599	—
Total stock-based compensation expense	30,690	19,015	9,315

Income Tax Benefit from Stock Option Plans [Table Text Block]

Total income tax benefit from employee stock option plans that is recognized in the consolidated statements of operations is as follows ($ amounts in 000's):



	Fiscal Year
	2012	2011	2010
Income tax benefit from employee stock option plans	5,870	3,822	1,924

- Definition

Tabular disclosure of the allocation of equity-based compensation costs to a given line item on the balance sheet and income statement for the period. This may include the reporting line for the costs and the amount capitalized and expensed.

+ References + Details

Income Taxes , Effective Tax Rate Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Income Tax Disclosure [Abstract]
Tax at federal statutory tax rate	$ 36,749	$ 32,225	$ 19,719
Stock-based compensation expense	1,570	(2,457)	(2,308)
State taxes—net of federal benefit	1,186	2,222	(1,098)
Research and development credit	(144)	(887)	(948)
Foreign income taxed at different rates	(1,845)	(929)	(1,066)
Other	644	(593)	797
Total provision for income taxes	$ 38,160	$ 29,581	$ 15,096

Stock Plans , Allocation of Stock-Based Compensation Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation expense	$ 30,690	$ 19,015	$ 9,315
Cost of Product Revenue [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation expense	333	183	101
Cost of Services Revenue [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation expense	3,736	1,790	929
Research and development [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation expense	9,226	4,691	2,339
Selling and marketing [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation expense	12,793	9,325	3,810
General and administrative [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation expense	$ 4,602	$ 3,026	$ 2,136

- Definition

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

+ References + Details

Segment Information

12 Months Ended

Dec. 31, 2012

Segment Reporting [Abstract]

SEGMENT INFORMATION

Operating segments are defined as components of an enterprise about which separate financial information is available that is evaluated regularly by the chief operating decision maker in deciding how to allocate resources and in assessing performance. Our chief operating decision maker is our chief executive officer. Our chief executive officer reviews financial information presented on a consolidated basis, accompanied by information about revenue by geographic region for purposes of allocating resources and evaluating financial performance. We have one business activity, and there are no segment managers who are held accountable for operations, operating results and plans for levels or components below the consolidated unit level. Accordingly, we have determined that we have one operating segment, and therefore, one reportable segment.

The following tables set forth revenue and property and equipment by geographic region ($ amounts in 000’s):



	Fiscal Year
Revenue	2012	2011	2010
Americas:
United States	145,369	120,456	92,097
Other Americas	71,687	52,038	31,864
Total Americas	217,056	172,494	123,961
EMEA	184,175	152,385	121,604
APAC	132,408	108,697	79,131
Total revenue	533,639	433,576	324,696


Property and Equipment	December 31, 2012	December 31, 2011
Americas:
United States	18,764	2,225
Canada	4,376	4,062
Other Americas	87	33
Total Americas	23,227	6,320
EMEA	1,213	805
APAC	1,198	841
Total property and equipment—net	25,638	7,966

- Definition

The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 34
-URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8981-108599

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 41
-URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e9038-108599

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8971-108599

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8595-108599

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8380-108599

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 32
-URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8933-108599

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 26
-URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8844-108599

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 35
-URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8984-108599

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 40
-URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e9031-108599

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 42
-URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e9054-108599

Reference 11: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8538-108599

Reference 12: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
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-URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8864-108599

Reference 13: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 31
-URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8924-108599

Reference 14: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 30
-URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8906-108599

Reference 15: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 131
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Stock Plans , ESPP Information (Details) - Employee Stock Purchase Plan [Member] - $ / shares shares in Thousands	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected term in years	6 months	6 months	0 months
Volatility (%)	53.70%	59.90%	0.00%
Risk-free interest rate (%)	0.12%	0.07%	0.00%
Dividend rate (%)	0.00%	0.00%	0.00%
Weighted-average fair value per share granted (in dollars per share)	$ 7.06	$ 6.56	$ 0.00
Shares issued under the ESPP (in shares)	577	0	0
Weighted-average price per share issued (in dollars per share)	$ 18,900	$ 0	$ 0

- Definition

Number of shares issued during the period as a result of an employee stock purchase plan.

+ References + Details

Summary of Significant Accounting Policies , Property and Equipment (Details)	12 Months Ended
	Dec. 31, 2012
Evaluation units [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, useful life	1 year
Minimum [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, useful life	1 year
Maximum [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, useful life	3 years

Income Taxes , Deferred Tax Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Deferred Taxes [Line Items]
Income tax benefit from employee stock option plans	$ 14,278	$ 26,205	$ 9,235
Deferred tax assets:
Net operating loss carryforward	587	1,830
Deferred revenue	36,438	31,234
Nondeductible reserves and accruals	13,437	13,698
Depreciation and amortization	920	684
General business credit carryforward	1,381	396
Stock-based compensation	9,413	6,247
Other	12	12
Total deferred tax assets	62,188	$ 54,101
Foreign earnings deemed to be permanently reinvested overseas	30,300
State and Local Jurisdiction [Member]
Deferred tax assets:
State net operating loss carryforwards	24,100
State tax credit carryforwards	1,200
California [Member]
Deferred Taxes [Line Items]
Amount of unrecognized deferred tax asset relating to net operating losses	13,200
Amount of unrecognized deferred tax asset relating to tax credits for excess tax benefits for stock-based compensation expense	$ 800

Summary of Significant Accounting Policies , Foreign Currency Translation (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Accounting Policies [Abstract]
Foreign currency transaction gains (losses)	$ (0.5)	$ (0.4)	$ (0.8)

- Definition

The aggregate foreign currency transaction gain (loss) (both realized and unrealized) included in determining net income for the reporting period. Excludes foreign currency transactions designated as hedges of net investment in a foreign entity and intercompany foreign currency transactions that are of a long-term nature, when the entities to the transaction are consolidated, combined, or accounted for by the equity method in the reporting enterprise's financial statements. For certain enterprises, primarily banks, that are dealers in foreign exchange, foreign currency transaction gains (losses) may be disclosed as dealer gains (losses).

+ References + Details

Commitments and Contingencies , Purchase Obligations (Details) $ in Millions	Dec. 31, 2012 USD ($)
Independent Contract Manufacturing [Member]
Unrecorded Unconditional Purchase Obligation [Line Items]
Open purchase orders and other contractual obligations	$ 30.0
Other Purchase Obligations [Member]
Unrecorded Unconditional Purchase Obligation [Line Items]
Open purchase orders and other contractual obligations	$ 8.1

Summary of Significant Accounting Policies Summary of Significant Accounting Policies (Details) $ in Millions	12 Months Ended
	Dec. 31, 2012 USD ($)
Prior Period Adjustment [Abstract]
Non-recurring cumulative out-of-period adjustment relating to forfeitures of stock awards	$ 0.9

Property and Equipment—Net (Details) - USD ($) $ in Thousands	1 Months Ended	12 Months Ended
	Aug. 31, 2012	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Property, Plant and Equipment [Line Items]
Payments to acquire real estate	$ 14,500
Property, Plant and Equipment, Net, by Type [Abstract]
Total property and equipment		$ 56,858	$ 31,819
Less: accumulated depreciation		(31,220)	(23,853)
Property and equipment - net		25,638	7,966
Depreciation expense		10,500	7,000	$ 5,700
Land [Member]
Property, Plant and Equipment, Net, by Type [Abstract]
Total property and equipment		13,895	0
Building and building improvements [Member]
Property, Plant and Equipment, Net, by Type [Abstract]
Total property and equipment		610	0
Evaluation units [Member]
Property, Plant and Equipment, Net, by Type [Abstract]
Total property and equipment		18,322	13,912
Computer equipment and software [Member]
Property, Plant and Equipment, Net, by Type [Abstract]
Total property and equipment		17,176	12,219
Furniture and fixtures [Member]
Property, Plant and Equipment, Net, by Type [Abstract]
Total property and equipment		1,501	1,307
Leasehold improvements and tooling [Member]
Property, Plant and Equipment, Net, by Type [Abstract]
Total property and equipment		$ 5,354	$ 4,381