0001262039-14-000039 | 10-Q | XBRL Viewer

Goodwill and Other Intangible Assets—Net (Tables)

9 Months Ended

Sep. 30, 2014

Goodwill and Intangible Assets Disclosure [Abstract]

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

The following tables present other intangible assets—net (in thousands):



	September 30, 2014
	Gross		Accumulated Amortization		Net
Other intangible assets—net:
Developed technology	$	5,606	$	2,877	$	2,729
Customer relationships	500		125		375
Total other intangible assets—net	$	6,106	$	3,002	$	3,104



	December 31, 2013
	Gross		Accumulated Amortization		Net
Other intangible assets—net:
Developed technology	$	8,971	$	2,568	$	6,403
Customer relationships	500		62		438
Total other intangible assets—net	$	9,471	$	2,630	$	6,841

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

The following table summarizes estimated future amortization expense of Other intangible assets—net (in thousands):



	Amount
Years Ending December 31:
2014 (remainder)	$	273
2015	1,091
2016	785
2017	425
2018	425
Thereafter	105
Total	$	3,104

Business Combinations

9 Months Ended

Sep. 30, 2014

Business Combinations [Abstract]

BUSINESS COMBINATIONS

Coyote Point Systems

On March 21, 2013, we acquired all of the outstanding equity securities of Coyote, a provider of application delivery, load balancing and acceleration solutions, for $6.0 million in cash. The acquisition also included a contingent obligation for up to $5.5 million in future earn-out payments to former stockholders of Coyote, if specified future operational objectives, service conditions and financial results are met within two years of the acquisition date. As of September 30, 2014, we have estimated that no contingent earn-out payment thresholds will be met.

We accounted for this acquisition as a purchase of a business and, accordingly, the total purchase price was allocated to Coyote’s identifiable tangible and intangible assets acquired and liabilities assumed based on their estimated fair values as of the acquisition date. The fair value assigned to the intangible assets acquired was determined using the income approach which discounts expected cash flows to present value using our estimates and assumptions.

The following table summarizes the fair value of assets acquired and liabilities assumed (in thousands):



Cash and cash equivalents	$	206
Other current assets	501
Finite-lived intangible assets	2,800
Indefinite-lived intangible assets	2,600
Goodwill	2,824
Other assets	88
Total assets acquired	9,019
Current liabilities	1,030
Long-term liabilities	2,004
Total liabilities assumed	3,034
Total purchase price	$	5,985

Of the total acquired identified intangible assets, we allocated $2.3 million to developed technology, $0.5 million to customer relationships, and $2.6 million to in-process research and development (“IPR&D”) as of the acquisition date. Identified finite-lived intangible assets consist of developed technology and customer relationships that are being amortized as cost of revenue and sales and marketing expense, respectively, ratably on a straight-line basis, each over an estimated useful life of six years. The goodwill of $2.8 million represents the premium we paid over the fair value of the net tangible liabilities assumed and identified intangible assets acquired, due primarily to acquire developed and in-process technology. None of the goodwill recognized as a result of the acquisition is deductible for income tax purposes. The financial results of this acquisition were considered immaterial for purposes of pro-forma financial disclosures. During the three months ended September 30, 2013, we completed the development of technology associated with the IPR&D projects, and started amortizing this developed technology as cost of revenue ratably on a straight-line basis over an estimated remaining useful life of approximately five years.

- 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
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Reference 3: http://www.xbrl.org/2003/role/presentationRef
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Reference 4: http://www.xbrl.org/2003/role/presentationRef
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Reference 15: http://www.xbrl.org/2003/role/presentationRef
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+ Details

Accumulated Other Comprehensive Income (Changes in Accumulated Balances of Other Comprehensive Income)(Details) $ in Thousands	9 Months Ended
	Sep. 30, 2014 USD ($)
Accumulated Other Comprehensive Income [Roll Forward]
Beginning balance	$ 1,092
Other comprehensive income before reclassifications	(972)
Amounts reclassified from accumulated other comprehensive income	(6)
Net current-period other comprehensive income	(978)
Ending balance	114
Accumulated Other Comprehensive Income, Tax [Roll Forward]
Beginning balance, tax	(409)
Other comprehensive income before reclassifications, tax	345
Amounts reclassified from accumulated other comprehensive income, tax	3
Net current-period other comprehensive income, tax	348
Ending balance, tax	(61)
Foreign Currency Translation Gains and Losses [Member]
Accumulated Other Comprehensive Income [Roll Forward]
Beginning balance	333
Other comprehensive income before reclassifications	(333)
Amounts reclassified from accumulated other comprehensive income	0
Net current-period other comprehensive income	(333)
Ending balance	0
Unrealized Gains and Losses on Investments [Member]
Accumulated Other Comprehensive Income [Roll Forward]
Beginning balance	1,168
Other comprehensive income before reclassifications	(984)
Amounts reclassified from accumulated other comprehensive income	(9)
Net current-period other comprehensive income	(993)
Ending balance	$ 175

Document and Entity Information - shares	9 Months Ended
Document and Entity Information - shares	Sep. 30, 2014	Oct. 31, 2014
Document Information [Line Items]
Entity Registrant Name	FORTINET INC
Entity Central Index Key	0001262039
Document Type	10-Q
Document Period End Date	Sep. 30, 2014
Amendment Flag	false
Document Fiscal Year Focus	2014
Document Fiscal Period Focus	Q3
Current Fiscal Year End Date	--12-31
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		164,855,943

Property and Equipment—Net (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Property, Plant and Equipment, Net, by Type [Abstract]
Total property and equipment	$ 109,208		$ 109,208		$ 78,450
Less: accumulated depreciation	(52,396)		(52,396)		(41,798)
Property and equipment - net	56,812		56,812		36,652
Depreciation expense	5,400	$ 3,800	15,300	$ 10,400
Land [Member]
Property, Plant and Equipment, Net, by Type [Abstract]
Total property and equipment	13,895		13,895		13,895
Building and building improvements [Member]
Property, Plant and Equipment, Net, by Type [Abstract]
Total property and equipment	17,546		17,546		610
Evaluation units [Member]
Property, Plant and Equipment, Net, by Type [Abstract]
Total property and equipment	29,181		29,181		23,442
Computer equipment and software [Member]
Property, Plant and Equipment, Net, by Type [Abstract]
Total property and equipment	31,010		31,010		23,556
Furniture and fixtures [Member]
Property, Plant and Equipment, Net, by Type [Abstract]
Total property and equipment	4,655		4,655		1,697
Construction-in-progress [Member]
Property, Plant and Equipment, Net, by Type [Abstract]
Total property and equipment	5,326		5,326		10,947
Leasehold improvements [Member]
Property, Plant and Equipment, Net, by Type [Abstract]
Total property and equipment	$ 7,595		$ 7,595		$ 4,303

Segment and Significant Customer Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Segment Reporting Information [Line Items]
Revenue	$ 193,348	$ 154,699	$ 546,395	$ 437,947
Property and equipment - net	56,812		56,812		$ 36,652
Americas [Member]
Segment Reporting Information [Line Items]
Revenue	82,218	65,448	233,035	178,101
Property and equipment - net	51,529		51,529		33,751
United States
Segment Reporting Information [Line Items]
Revenue	50,329	40,654	144,794	114,257
Property and equipment - net	45,234		45,234		29,334
Canada [Member]
Segment Reporting Information [Line Items]
Property and equipment - net	5,884		5,884		4,372
Other Americas [Member]
Segment Reporting Information [Line Items]
Revenue	31,889	24,794	88,241	63,844
Property and equipment - net	411		411		45
EMEA [Member]
Segment Reporting Information [Line Items]
Revenue	66,157	51,373	185,354	149,500
Property and equipment - net	2,221		2,221		1,273
APAC [Member]
Segment Reporting Information [Line Items]
Revenue	44,973	$ 37,878	128,006	$ 110,346
Property and equipment - net	$ 3,062		$ 3,062		$ 1,628
Exclusive Networks Group [Member] \| Accounts Receivable [Member] \| Customer Concentration Risk [Member]
Segment Reporting Information [Line Items]
Largest customer, percentage			13.00%		13.00%
Exclusive Networks Group [Member] \| Sales Revenue [Member] \| Customer Concentration Risk [Member]
Segment Reporting Information [Line Items]
Largest customer, percentage	15.00%	11.00%	14.00%	11.00%
Fine Tec Computer [Member] \| Accounts Receivable [Member] \| Customer Concentration Risk [Member]
Segment Reporting Information [Line Items]
Largest customer, percentage			15.00%		0.00%
Fine Tec Computer [Member] \| Sales Revenue [Member] \| Customer Concentration Risk [Member]
Segment Reporting Information [Line Items]
Largest customer, percentage	11.00%	0.00%	0.00%	0.00%

Inventory (Details) - USD ($) $ in Thousands	Sep. 30, 2014	Dec. 31, 2013
Inventory, Net [Abstract]
Raw materials	$ 5,922	$ 4,319
Finished goods	40,370	40,093
Consignment inventory	5,052	4,260
Inventory	$ 51,344	$ 48,672

Net Income Per Share

9 Months Ended

Sep. 30, 2014

Earnings Per Share [Abstract]

NET 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, restricted stock units (“RSUs”), and the employee stock purchase plan (“ESPP”). 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 (in thousands, except per share amounts):



	Three Months Ended				Nine Months Ended
	September 30, 2014		September 30, 2013		September 30, 2014		September 30, 2013
Numerator:
Net income	$	4,056	$	11,029	$	18,530	$	32,257

Denominator:
Basic shares:
Weighted-average common stock outstanding-basic	164,294		162,906		163,289		162,150
Diluted shares:
Weighted-average common stock outstanding-basic	164,294		162,906		163,289		162,150
Effect of potentially dilutive securities:
Stock options	4,405		5,525		4,728		5,844
RSUs	993		213		692		50
ESPP	35		22		26		10
Weighted-average shares used to compute diluted net income per share	169,727		168,666		168,735		168,054
Net income per share:
Basic	$	0.02	$	0.07	$	0.11	$	0.20
Diluted	$	0.02	$	0.07	$	0.11	$	0.19

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 thousands):



	Three Months Ended		Nine Months Ended
	September 30, 2014	September 30, 2013	September 30, 2014	September 30, 2013
Stock options	3,023	6,640	4,101	7,364
RSUs	696	1,416	879	2,383
ESPP	226	407	133	399
	3,945	8,463	5,113	10,146

Stockholders' Equity

9 Months Ended

Sep. 30, 2014

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

STOCKHOLDERS' EQUITY

STOCKHOLDERS’ EQUITY

Employee Stock Options

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



	Three Months Ended				Nine Months Ended
	September 30, 2014		September 30, 2013		September 30, 2014		September 30, 2013
Expected term in years	4.9		4.6		4.9		4.6
Volatility	40.7	%	47.8	%	43.1	%	47.8	%
Risk-free interest rate	1.6	%	1.2	%	1.7	%	1.2	%
Dividend rate	—		—		—		—

The following table summarizes the stock option activity and related information for the periods presented below (in thousands, except 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, 2013	15,521		$	13.18
Granted	320		22.36
Forfeited	(390	)	24.15
Exercised	(3,216	)	8.25
Balance—September 30, 2014	12,235		14.37
Options vested and expected to vest—September 30, 2014	12,205		$	14.35	2.82	$	136,230
Options exercisable—September 30, 2014	10,244		$	12.59	2.48	$	131,847

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 September 30, 2014, for all in-the-money options. As of September 30, 2014, total compensation expense related to unvested stock options granted to employees but not yet recognized was $22.9 million, net of estimated forfeitures. This expense is expected to be amortized on a straight-line basis over a weighted-average period of 1.47 years.

Additional information related to our stock options is summarized below (in thousands, except per share amounts):



	Three Months Ended				Nine Months Ended
	September 30, 2014		September 30, 2013		September 30, 2014		September 30, 2013
Weighted-average fair value per share granted	$	9.13	$	8.61	$	8.76	$	8.61
Intrinsic value of options exercised	$	17,728	$	7,880	$	49,490	$	36,997
Fair value of options vested	$	4,393	$	5,063	$	13,163	$	21,553

Restricted Stock Units

The following table summarizes the activity and related information for RSUs for the periods presented below (in thousands, except per share amounts):



	Restricted Stock Units Outstanding
	Number of Shares		Weighted-Average Grant-Date-Fair Value per Share
Balance—December 31, 2013	4,199		$	22.00
Granted	3,359		22.44
Forfeited	(342	)	21.85
Vested	(1,197	)	22.31
Balance—September 30, 2014	6,019		$	22.27
RSUs expected to vest—September 30, 2014	5,699		$	22.27

As of September 30, 2014, total compensation expense related to unvested RSUs that were granted to employees and non-employees under our 2009 Equity Incentive Plan, but not yet recognized, was $128.3 million, net of estimated forfeitures. This expense is expected to be amortized on a straight-line basis over a weighted-average vesting period of 3.02 years.

The following summarizes the number and value of the shares withheld for employee taxes (in thousands):



	Three Months Ended				Nine Months Ended
	September 30, 2014		September 30, 2013		September 30, 2014		September 30, 2013
Shares withheld for taxes	124		45		381		45
Amount withheld for taxes	$	2,985	$	966	$	8,506	$	966

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:



	Three Months Ended				Nine Months Ended
	September 30, 2014		September 30, 2013		September 30, 2014		September 30, 2013
Expected term in years	0.5		0.5		0.5		0.5
Volatility	31.9	%	35.1	%	34.1	%	44.0	%
Risk-free interest rate	0.1	%	0.1	%	0.1	%	0.1	%
Dividend rate	—		—		—		—

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



	Three Months Ended				Nine Months Ended
	September 30, 2014		September 30, 2013		September 30, 2014		September 30, 2013
Weighted-average fair value per share granted	$	6.03	$	5.04	$	5.91	$	6.11
Shares issued under the ESPP	346		344		770		672
Weighted-average price per share issued	$	19.38	$	17.90	$	18.17	$	18.88

Stock-based Compensation Expense

Stock-based compensation expense is included in costs and expenses as follows (in thousands):



	Three Months Ended				Nine Months Ended
	September 30, 2014		September 30, 2013		September 30, 2014		September 30, 2013
Cost of product revenue	$	60	$	91	$	351	$	277
Cost of services and other revenue	1,522		1,297		4,214		3,543
Research and development	4,505		3,548		12,558		9,605
Sales and marketing	7,397		5,215		18,890		13,927
General and administrative	1,183		1,627		6,300		4,432
Total stock-based compensation expense	$	14,667	$	11,778	$	42,313	$	31,784

The following table summarizes stock-based compensation expense by award type (in thousands):



	Three Months Ended				Nine Months Ended
	September 30, 2014		September 30, 2013		September 30, 2014		September 30, 2013
Stock options	$	4,282	$	5,180	$	13,395	$	15,801
RSUs	9,275		5,408		25,886		12,439
ESPP	1,110		1,190		3,032		3,544
Total stock-based compensation expense	$	14,667	$	11,778	$	42,313	$	31,784

Total income tax benefit associated with stock-based compensation that is included as part of the provision for income taxes in the condensed consolidated statements of operations is as follows (in thousands):



	Three Months Ended				Nine Months Ended
	September 30, 2014		September 30, 2013		September 30, 2014		September 30, 2013
Income tax benefit associated with stock-based compensation	$	4,225	$	3,176	$	11,821	$	9,557

Share Repurchase Program

On December 6, 2013, our Board of Directors (“Board”) authorized a Share Repurchase Program (“Program”) to repurchase up to $200.0 million of our outstanding common stock through December 31, 2014. Under the Program, share repurchases may be made by us from time to time in privately negotiated transactions or in open market transactions. The Program may be suspended, modified or discontinued at any time without prior notice. During the three and nine months ended September 30, 2014, we repurchased 0.4 million and 1.4 million shares of common stock under the Program in open market transactions for an aggregate purchase price of $10.7 million and $33.2 million, respectively. As of September 30, 2014, $127.9 million remained authorized for future share repurchases under the Program.

Property and Equipment—Net

9 Months Ended

Sep. 30, 2014

Property, Plant and Equipment [Abstract]

PROPERTY AND EQUIPMENT—Net

Property and equipment—net consisted of the following (in thousands):



	September 30, 2014			December 31, 2013
Land	$	13,895		$	13,895
Building and building improvements	17,546			610
Evaluation units	29,181			23,442
Computer equipment and software	31,010			23,556
Furniture and fixtures	4,655			1,697
Construction-in-progress	5,326			10,947
Leasehold improvements	7,595			4,303
Total property and equipment	109,208			78,450
Less: accumulated depreciation	(52,396		)	(41,798		)
Property and equipment—net	$	56,812		$	36,652

Beginning in the first quarter of 2014, we reclassified certain fixed assets between categories in the table above to better reflect the nature of these fixed assets. Prior period amounts have also been reclassified to conform to the current period presentation. The impact of the reclassification is not material.

Depreciation expense was $5.4 million and $3.8 million during the three months ended September 30, 2014 and September 30, 2013, respectively. Depreciation expense was $15.3 million and $10.4 million during the nine months ended September 30, 2014 and September 30, 2013, respectively.

Summary of Significant Accounting Policies (Policies)

9 Months Ended

Sep. 30, 2014

Accounting Policies [Abstract]

Basis of Presentation and Preparation

Basis of Presentation and Preparation—The unaudited condensed consolidated financial statements of Fortinet, Inc. and its wholly owned subsidiaries (collectively, “we,” “us,” or “our”) have been prepared in accordance with generally accepted accounting principles (“GAAP”) in the United States (“U.S.”) for interim financial information as well as the instructions to Form 10-Q pursuant to the rules and regulations of the U.S. Securities and Exchange Commission (“SEC”). Accordingly, they do not include all of the information and footnotes required by GAAP for complete financial statements, and should be read in conjunction with our audited consolidated financial statements as of and for the fiscal year ended December 31, 2013, contained in our Annual Report on Form 10-K (“Form 10-K”) filed with the SEC on March 3, 2014. In the opinion of management, all adjustments, which includes normal recurring adjustments, considered necessary for a fair presentation have been included. All intercompany balances, transactions and cash flows have been eliminated. The results of operations for the three and nine months ended September 30, 2014 are not necessarily indicative of the operating results for the full year or for any future periods. The condensed consolidated balance sheets as of December 31, 2013 are derived from the audited consolidated financial statements for the year ended December 31, 2013.

The preparation of financial statements in accordance with GAAP requires management to make estimates and assumptions that affect the amounts reported in the condensed consolidated financial statements and accompanying notes. Actual results could differ materially from those estimates.

There have been no material changes to our significant accounting policies as of and for the three and nine months ended September 30, 2014. During the first quarter of fiscal 2014, we prospectively modified the expected term calculation used in accounting for stock-based compensation expense and the estimated useful lives of building improvements, and furniture and fixtures. During the third quarter of fiscal 2014, we reevaluated the functional currency selection for certain of our international subsidiaries and prospectively applied the U.S. dollar.

Stock-Based Compensation Expense

Stock-Based Compensation Expense—Beginning in the first quarter of fiscal 2014, we changed the methodology of calculating the expected term, which is one of the assumptions used in determining the fair value of our employee stock options under the Black Scholes option pricing model. The expected term represents the period that our stock-based awards are estimated to be outstanding. We believe that we have sufficient historical experience since becoming a publicly-traded company for estimating the expected term of the stock option awards, and therefore, we calculated our expected term based on historical experience instead of using the simplified method.

Currency Translation Adjustment

Currency Translation Adjustment—Prior to the third quarter of fiscal 2014, the assets and liabilities of our international subsidiaries were translated into U.S. dollars using the applicable exchange rates. The resulting foreign translation adjustments were included in the consolidated balance sheets as a component of accumulated other comprehensive income (loss) and in the consolidated statements of comprehensive income.

We reevaluated the selected functional currency of our international subsidiaries due to the nature of our business operations. We recorded the cumulative impact of the reevaluation of the functional currency in the condensed consolidated statement of operations for the three months ended September 30, 2014. The remeasurement of the assets and liabilities of all international subsidiaries will be recorded in the consolidated statement of operations prospectively. The impact of this reevaluation is not material for any of our previously issued financial statements.

Property and Equipment

Property and Equipment—Property and equipment—net is stated at cost less accumulated depreciation. Depreciation is computed using the straight-line method over the estimated useful lives of the assets as follows:



	Estimated Useful Lives
Building and building improvements	20 years
Evaluation units	1 year
Computer equipment and software	1-2 years
Furniture and fixtures	3 - 5 years
Leasehold improvements	Shorter of useful life or lease term

In March 2014, we moved into our new corporate headquarters and estimated the useful life of the building and related improvements to be 20 years. The useful life of furniture and fixtures placed in service in the new building is estimated to be 3 to 5 years.

Reclassification

Reclassification—Beginning in the first quarter of 2014, the amounts previously reported as Ratable and other revenue have been combined with the amounts previously reported as Services revenue in the condensed consolidated statements of operations. The combined amounts are now being presented as Services and other revenue in the condensed consolidated statements of operations. The related Cost of revenue and Gross profit, including prior period amounts, have also been combined to conform to the current period presentation. The Ratable and other revenue amounts, including the related Cost of revenue and Gross profit amounts, are not material, and the reclassification did not have any impact on our gross margin or net income.

Stockholders' Equity , Allocation of Stock-Based Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation expense	$ 14,667	$ 11,778	$ 42,313	$ 31,784
Income tax benefit associated with stock-based compensation	4,225	3,176	11,821	9,557
Cost of product revenue [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation expense	60	91	351	277
Cost of services and other revenue [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation expense	1,522	1,297	4,214	3,543
Research and development [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation expense	4,505	3,548	12,558	9,605
Selling and marketing [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation expense	7,397	5,215	18,890	13,927
General and administrative [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation expense	1,183	1,627	6,300	4,432
Stock Options [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation expense	4,282	5,180	13,395	15,801
Restricted Stock Units (RSUs) [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation expense	9,275	5,408	25,886	12,439
ESPP [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation expense	$ 1,110	$ 1,190	$ 3,032	$ 3,544

Financial Instruments and Fair Value Measurements Change to Contingent Consideration Liability (Details) - Estimate of Fair Value [Member] - Recurring [Member] - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Mar. 31, 2014	Sep. 30, 2014
Movement in Contingent Consideration Liability [Roll Forward]
Contingent consideration liability, beginning	$ 1,850	$ 707
Less change in fair value of contingent consideration	(1,143)	(707)
Contingent consideration liability, ending	$ 707	$ 0

Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Net income	$ 4,056	$ 11,029	$ 18,530	$ 32,257
Other comprehensive (loss) income—net of taxes:
Foreign currency translation (losses) gains	(432)	912	(333)	(901)
Unrealized (losses) gains on investments	(977)	600	(993)	(826)
Tax benefit (provision) related to items of other comprehensive loss or income	342	(209)	348	289
Other comprehensive (loss) income—net of taxes	(1,067)	1,303	(978)	(1,438)
Comprehensive income	$ 2,989	$ 12,332	$ 17,552	$ 30,819

- 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=31042434&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
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.18)
-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 225
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-04.22)
-URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Other Comprehensive Income
-URI http://asc.fasb.org/extlink&oid=6519514

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=28358780&loc=d3e565-108580

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 03
-Paragraph 19
-Article 5

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 04
-Paragraph 20
-Article 9

+ Details

Stockholders' Equity (Tables)

9 Months Ended

Sep. 30, 2014

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]

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



	Three Months Ended				Nine Months Ended
	September 30, 2014		September 30, 2013		September 30, 2014		September 30, 2013
Expected term in years	4.9		4.6		4.9		4.6
Volatility	40.7	%	47.8	%	43.1	%	47.8	%
Risk-free interest rate	1.6	%	1.2	%	1.7	%	1.2	%
Dividend rate	—		—		—		—

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

The following table summarizes the stock option activity and related information for the periods presented below (in thousands, except 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, 2013	15,521		$	13.18
Granted	320		22.36
Forfeited	(390	)	24.15
Exercised	(3,216	)	8.25
Balance—September 30, 2014	12,235		14.37
Options vested and expected to vest—September 30, 2014	12,205		$	14.35	2.82	$	136,230
Options exercisable—September 30, 2014	10,244		$	12.59	2.48	$	131,847

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

Additional information related to our stock options is summarized below (in thousands, except per share amounts):



	Three Months Ended				Nine Months Ended
	September 30, 2014		September 30, 2013		September 30, 2014		September 30, 2013
Weighted-average fair value per share granted	$	9.13	$	8.61	$	8.76	$	8.61
Intrinsic value of options exercised	$	17,728	$	7,880	$	49,490	$	36,997
Fair value of options vested	$	4,393	$	5,063	$	13,163	$	21,553

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 periods presented below (in thousands, except per share amounts):



	Restricted Stock Units Outstanding
	Number of Shares		Weighted-Average Grant-Date-Fair Value per Share
Balance—December 31, 2013	4,199		$	22.00
Granted	3,359		22.44
Forfeited	(342	)	21.85
Vested	(1,197	)	22.31
Balance—September 30, 2014	6,019		$	22.27
RSUs expected to vest—September 30, 2014	5,699		$	22.27

Schedule of Share-based Compensation, Shares Withheld for Taxes [Table Text Block]

The following summarizes the number and value of the shares withheld for employee taxes (in thousands):



	Three Months Ended				Nine Months Ended
	September 30, 2014		September 30, 2013		September 30, 2014		September 30, 2013
Shares withheld for taxes	124		45		381		45
Amount withheld for taxes	$	2,985	$	966	$	8,506	$	966

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:



	Three Months Ended				Nine Months Ended
	September 30, 2014		September 30, 2013		September 30, 2014		September 30, 2013
Expected term in years	0.5		0.5		0.5		0.5
Volatility	31.9	%	35.1	%	34.1	%	44.0	%
Risk-free interest rate	0.1	%	0.1	%	0.1	%	0.1	%
Dividend rate	—		—		—		—

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

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



	Three Months Ended				Nine Months Ended
	September 30, 2014		September 30, 2013		September 30, 2014		September 30, 2013
Weighted-average fair value per share granted	$	6.03	$	5.04	$	5.91	$	6.11
Shares issued under the ESPP	346		344		770		672
Weighted-average price per share issued	$	19.38	$	17.90	$	18.17	$	18.88

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 (in thousands):



	Three Months Ended				Nine Months Ended
	September 30, 2014		September 30, 2013		September 30, 2014		September 30, 2013
Cost of product revenue	$	60	$	91	$	351	$	277
Cost of services and other revenue	1,522		1,297		4,214		3,543
Research and development	4,505		3,548		12,558		9,605
Sales and marketing	7,397		5,215		18,890		13,927
General and administrative	1,183		1,627		6,300		4,432
Total stock-based compensation expense	$	14,667	$	11,778	$	42,313	$	31,784

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

The following table summarizes stock-based compensation expense by award type (in thousands):



	Three Months Ended				Nine Months Ended
	September 30, 2014		September 30, 2013		September 30, 2014		September 30, 2013
Stock options	$	4,282	$	5,180	$	13,395	$	15,801
RSUs	9,275		5,408		25,886		12,439
ESPP	1,110		1,190		3,032		3,544
Total stock-based compensation expense	$	14,667	$	11,778	$	42,313	$	31,784

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



	Three Months Ended				Nine Months Ended
	September 30, 2014		September 30, 2013		September 30, 2014		September 30, 2013
Income tax benefit associated with stock-based compensation	$	4,225	$	3,176	$	11,821	$	9,557

Financial Instruments and Fair Value Measurements , Fair Value Measurements, Nonrecurring Basis (Details) - Cost of Product Revenue [Member] - Coyote Point Systems, Inc. [Member] $ in Millions	9 Months Ended
	Sep. 30, 2014 USD ($)
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Line Items]
Impairment of intangible assets	$ 2.4
Nonrecurring [Member] \| Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Line Items]
Intangible assets, fair value	$ 2.0

Deferred Revenue (Details) - USD ($) $ in Thousands	Sep. 30, 2014	Dec. 31, 2013
Deferred Revenue Arrangement [Line Items]
Current	$ 329,132	$ 293,664
Non-current	170,880	138,964
Total deferred revenue	500,012	432,628
Product [Member]
Deferred Revenue Arrangement [Line Items]
Total deferred revenue	2,685	2,915
Services and other [Member]
Deferred Revenue Arrangement [Line Items]
Total deferred revenue	$ 497,327	$ 429,713

Financial Instruments and Fair Value Measurements

9 Months Ended

Sep. 30, 2014

Fair Value Disclosures [Abstract]

FINANCIAL INSTRUMENTS AND FAIR VALUE MEASUREMENTS

The following table summarizes our investments as of September 30, 2014 and December 31, 2013 (in thousands):



	September 30, 2014
	Amortized Cost		Unrealized Gains		Unrealized Losses			Fair Value
Corporate debt securities	$	587,087	$	763	$	(606	)	$	587,244
Commercial paper	58,250		4		(1		)	58,253
Municipal bonds	33,260		42		(25		)	33,277
Certificates of deposit and term deposits	21,143		1		—			21,144
U.S. government and agency securities	5,748		2		(5		)	5,745
Total available-for-sale securities	$	705,488	$	812	$	(637	)	$	705,663



	December 31, 2013
	Amortized Cost		Unrealized Gains		Unrealized Losses			Fair Value
Corporate debt securities	$	603,185	$	1,506	$	(374	)	$	604,317
Commercial paper	69,356		7		—			69,363
Municipal bonds	38,815		48		(20		)	38,843
Certificates of deposit and term deposits	12,645		3		—			12,648
U.S. government and agency securities	2,000		1		—			2,001
Total available-for-sale securities	$	726,001	$	1,565	$	(394	)	$	727,172

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 September 30, 2014 and December 31, 2013 (in thousands):



	September 30, 2014
	Less Than 12 Months					12 Months or Greater					Total
	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
Corporate debt securities	$	244,554	$	(605	)	$	1,017	$	(1	)	$	245,571	$	(606	)
Commercial paper	2,396		(1		)	—		—			2,396		(1		)
Municipal bonds	12,201		(25		)	2,000		—			14,201		(25		)
U.S. government and agency securities	4,745		(5		)	—		—			4,745		(5		)
Total available-for-sale securities	$	263,896	$	(636	)	$	3,017	$	(1	)	$	266,913	$	(637	)



	December 31, 2013
	Less Than 12 Months					12 Months or Greater				Total
	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
Corporate debt securities	$	182,795	$	(374	)	$	500	$	—	$	183,295	$	(374	)
Commercial paper	7,897		—			—		—		7,897		—
Municipal bonds	14,736		(20		)	—		—		14,736		(20		)
Total available-for-sale securities	$	205,428	$	(394	)	$	500	$	—	$	205,928	$	(394	)

The contractual maturities of our investments are as follows (in thousands):



	September 30, 2014		December 31, 2013
Due within one year	$	402,495	$	375,497
Due within one to three years	303,168		351,675
Total	$	705,663	$	727,172

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 condensed consolidated statements of operations.

The unrealized losses on our available-for-sale securities were caused by fluctuations in market value and interest rates as a result of the economic environment. As the declines in market value are attributable to changes in market conditions and not credit quality, and because we have concluded currently that we neither intend to sell nor it is more likely than not that we will be required to sell these investments prior to a recovery of par value, we do not consider these investments to be other-than temporarily impaired as of September 30, 2014.

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

Fair Value of Financial Instruments

Assets and Liabilities Measured at Fair Value on a Recurring Basis

The following table presents the fair value of our financial assets and liabilities measured at fair value on a recurring basis as of September 30, 2014 and December 31, 2013 (in thousands):



	September 30, 2014								December 31, 2013
	Aggregate Fair Value		Quoted Prices in Active Markets For Identical Assets		Significant Other Observable Remaining Inputs		Significant Other Unobservable Remaining Inputs		Aggregate Fair Value		Quoted Prices in Active Markets For Identical Assets		Significant Other Observable Remaining Inputs		Significant Other Unobservable Remaining Inputs
			(Level 1)		(Level 2)		(Level 3)				(Level 1)		(Level 2)		(Level 3)
Assets:
Corporate debt securities	$	587,244	$	—	$	587,244	$	—	$	604,317	$	—	$	604,317	$	—
Commercial paper	58,253		—		58,253		—		71,363		—		71,363		—
Municipal bonds	33,277		—		33,277		—		38,843		—		38,843		—
Certificates of deposit and term deposits	21,144		—		21,144		—		12,648		—		12,648		—
Money market funds	20,125		20,125		—		—		5,724		5,724		—		—
U.S. government and agency securities	5,745		1,998		3,747		—		2,001		—		2,001		—
Total	$	725,788	$	22,123	$	703,665	$	—	$	734,896	$	5,724	$	729,172	$	—

Liabilities:
Contingent consideration	$	—	$	—	$	—	$	—	$	1,850	$	—	$	—	$	1,850
Total	$	—	$	—	$	—	$	—	$	1,850	$	—	$	—	$	1,850

Reported as:
Cash equivalents	$	20,125							$	7,724
Short-term investments	402,495								375,497
Long-term investments	303,168								351,675
Total	$	725,788							$	734,896

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.

There were no transfers between Level 1 and Level 2 of the fair value hierarchy during the three and nine months ended September 30, 2014.

We classified the fair value of contingent consideration arising from the acquisition of Coyote Point Systems, Inc. (“Coyote”) (see Note 5), as a Level 3 liability since it is based on a probability-based income approach that includes significant unobservable inputs. The significant unobservable inputs include projected revenues and the percentage probability of occurrence to determine the fair value of the payment.

The change in the fair value of our contingent consideration liability was as follows (in thousands):



As of December 31, 2013	$1,850
Less change in fair value of contingent consideration	(1,143)
As of March 31, 2014	707
Less change in fair value of contingent consideration	(707)
As of September 30, 2014	$—

Decreases in the projected revenues of Coyote following the acquisition resulted in reductions to the fair value of the contingent consideration and the changes are included in research and development expense in the condensed consolidated statements of operations.

Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis

We measure certain assets, including Goodwill, Other intangible assets—net, and investments in privately-held companies at fair value on a nonrecurring basis when there are identifiable events or changes in circumstances that may have a significant adverse impact on the fair value of these assets.

During the nine months ended September 30, 2014, a decrease in the projected cash flow from Coyote resulted in an impairment charge of $2.4 million to adjust the total fair value of the other intangible assets acquired from Coyote to $2.0 million. The impairment charge is included within Cost of product revenue in the condensed consolidated statements of operations.

We classified the intangible assets acquired from Coyote as Level 3 assets due to the lack of observable inputs to determine fair value. Significant inputs used in the determination of fair value based on the probability-weighted income approach primarily include internal cash flow projections and discount rates.

As of December 31, 2013, we did not have any assets or liabilities measured at fair value on a nonrecurring basis.

Stockholders' Equity , ESPP Information (Details) - Employee Stock Purchase Plan [Member] - $ / shares shares in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected term in years	6 months	6 months	6 months	6 months
Volatility	31.90%	35.10%	34.10%	44.00%
Risk-free interest rate	0.10%	0.10%	0.10%	0.10%
Dividend rate	0.00%	0.00%	0.00%	0.00%
Weighted-average fair value per share granted (in dollars per share)	$ 6.03	$ 5.04	$ 5.91	$ 6.11
Shares issued under the ESPP (in shares)	346	344	770	672
Weighted-average price per share issued (in dollars per share)	$ 19.38	$ 17.90	$ 18.17	$ 18.88

Defined Contribution plans	9 Months Ended
Defined Contribution plans	Sep. 30, 2014
Compensation and Retirement Disclosure [Abstract]
DEFINED CONTRIBUTION PLANS	DEFINED CONTRIBUTION PLANS Our tax-deferred savings plan, under the 401(k) Plan, allows participating employees to 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”) which permits participants to make tax deductible contributions up to the maximum contribution limits under the Income Tax Act. Our Board 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 the three months ended September 30, 2014 and September 30, 2013 were $0.7 million and $0.6 million, respectively. Our matching contributions to the 401(k) Plans and RRSP for the nine months ended September 30, 2014 and September 30, 2013 were $1.9 million and $1.6 million, respectively.

Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
REVENUE:
Product	$ 87,731	$ 69,687	$ 249,880	$ 194,162
Services and other	105,617	85,012	296,515	243,785
Total revenue	193,348	154,699	546,395	437,947
COST OF REVENUE:
Product	35,636	27,126	105,230	77,032
Services and other	21,249	16,804	60,155	49,734
Total cost of revenue	56,885	43,930	165,385	126,766
GROSS PROFIT:
Product	52,095	42,561	144,650	117,130
Services and other	84,368	68,208	236,360	194,051
Total gross profit	136,463	110,769	381,010	311,181
OPERATING EXPENSES:
Research and development	30,790	26,421	89,783	74,913
Sales and marketing	80,433	56,687	222,576	162,660
General and administrative	9,789	9,382	29,243	26,161
Total operating expenses	121,012	92,490	341,602	263,734
OPERATING INCOME	15,451	18,279	39,408	47,447
INTEREST INCOME	1,339	1,282	3,991	3,988
OTHER EXPENSE—Net	(1,005)	(1,151)	(1,968)	(1,036)
INCOME BEFORE INCOME TAXES	15,785	18,410	41,431	50,399
PROVISION FOR INCOME TAXES	11,729	7,381	22,901	18,142
NET INCOME	$ 4,056	$ 11,029	$ 18,530	$ 32,257
Net income per share (Note 7):
Basic (in dollars per share)	$ 0.02	$ 0.07	$ 0.11	$ 0.20
Diluted (in dollars per share)	$ 0.02	$ 0.07	$ 0.11	$ 0.19
Weighted-average shares outstanding:
Basic (in shares)	164,294	162,906	163,289	162,150
Diluted (in shares)	169,727	168,666	168,735	168,054

Foreign Currency Derivatives (Tables)

9 Months Ended

Sep. 30, 2014

Derivative Instruments and Hedging Activities Disclosure [Abstract]

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 September 30, 2014 and December 31, 2013 were (in thousands):



	Buy/Sell	Notional
Currency—As of September 30, 2014
CAD	Buy	$	13,242

Currency—As of December 31, 2013
CAD	Buy	$	21,867

Deferred Revenue

9 Months Ended

Sep. 30, 2014

Deferred Revenue Disclosure [Abstract]

DEFERRED REVENUE

Deferred revenue consisted of the following (in thousands):



	September 30, 2014		December 31, 2013
Product	$	2,685	$	2,915
Services and other	497,327		429,713
Total deferred revenue	$	500,012	$	432,628
Reported As:
Current	$	329,132	$	293,664
Non-current	170,880		138,964
Total deferred revenue	$	500,012	$	432,628

Income Taxes	9 Months Ended
Income Taxes	Sep. 30, 2014
Income Tax Disclosure [Abstract]
INCOME TAXES	INCOME TAXES The effective tax rate was 74% for the three months ended September 30, 2014, compared to an effective tax rate of 40% for the three months ended September 30, 2013. The effective tax rate was 55% for the nine months ended September 30, 2014, compared to an effective tax of 36% for the nine months ended September 30, 2013. The provision for income taxes for the periods presented is comprised of U.S. federal and state taxes, Singapore and other foreign income taxes, withholding tax, discrete taxes resulting from an increase in tax reserves, as well as the inclusion of stock compensation benefits and transfer pricing allocations which impact jurisdictional income taxed at various tax rates. As of September 30, 2014 and December 31, 2013, unrecognized tax benefits were $39.4 million and $30.2 million, respectively. The total amount of $39.4 million in unrecognized tax benefits, if recognized, would favorably impact the effective tax rate. It is our policy to classify accrued interest and penalties related to unrecognized tax benefits in the provision for income taxes. As of September 30, 2014, we had accrued approximately $1.6 million for estimated interest related to uncertain tax positions.

Deferred Revenue (Tables)

9 Months Ended

Sep. 30, 2014

Deferred Revenue Disclosure [Abstract]

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

Deferred revenue consisted of the following (in thousands):



	September 30, 2014		December 31, 2013
Product	$	2,685	$	2,915
Services and other	497,327		429,713
Total deferred revenue	$	500,012	$	432,628
Reported As:
Current	$	329,132	$	293,664
Non-current	170,880		138,964
Total deferred revenue	$	500,012	$	432,628

Inventory (Tables)

9 Months Ended

Sep. 30, 2014

Inventory Disclosure [Abstract]

Inventory [Table Text Block]

Inventory consisted of the following (in thousands):



	September 30, 2014		December 31, 2013
Raw materials	$	5,922	$	4,319
Finished goods	40,370		40,093
Consigned inventory	5,052		4,260
Inventory	$	51,344	$	48,672

Stockholders' Equity (Details) - Stock Options [Member] - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]
Expected term in years	4 years 10 months 17 days	4 years 7 months 6 days	4 years 10 months 17 days	4 years 7 months 6 days
Volatility	40.70%	47.80%	43.10%	47.80%
Risk-free interest rate	1.60%	1.20%	1.70%	1.20%
Dividend rate	0.00%	0.00%	0.00%	0.00%
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Balance - Beginning (in shares)			15,521
Granted (in shares)			320
Forfeited (in shares)			(390)
Exercised (in shares)			(3,216)
Balance - Ending (in shares)	12,235		12,235
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward]
Balance - Beginning (in dollars per share)			$ 13.18
Granted (in dollars per share)			22.36
Forfeited (in dollars per share)			24.15
Exercised (in dollars per share)			8.25
Balance - Ending (in dollars per share)	$ 14.37		$ 14.37
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Options vested and expected to vest, Outstanding (in shares)	12,205		12,205
Options vested and expected to vest, Weighted average exercise price (in dollars per share)	$ 14.35		$ 14.35
Options vested and expected to vest, Weighted average remaining contractual life (in years)			2 years 9 months 26 days
Options vested and expected to vest, Aggregate intrinsic value	$ 136,230		$ 136,230
Options exercisable, Outstanding (in shares)	10,244		10,244
Options exercisable, Weighted average exercise price (in dollars per share)	$ 12.59		$ 12.59
Options exercisable, Weighted average remaining contractual life (in years)			2 years 5 months 22 days
Options exercisable, Aggregate intrinsic value	$ 131,847		$ 131,847
Compensation cost not yet recognized	$ 22,900		$ 22,900
Compensation cost not yet recognized period of recognition			1 year 5 months 19 days
Weighted-average fair value per share granted	$ 9.13	$ 8.61	$ 8.76	$ 8.61
Intrinsic value of options exercised	$ 17,728	$ 7,880	$ 49,490	$ 36,997
Total fair value of awards vested	$ 4,393	$ 5,063	$ 13,163	$ 21,553

Business Combinations (Acquisitions) (Details) - USD ($) $ in Thousands		3 Months Ended
	Mar. 21, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Business Acquisition [Line Items]
Goodwill		$ 2,824		$ 2,872
Coyote Point Systems, Inc. [Member]
Business Acquisition [Line Items]
Cash paid to acquire business	$ 6,000
Contingent consideration	5,500
Cash and cash equivalents	206
Other current assets	501
Finite-lived intangible assets	2,800
Indefinite-lived intangible assets	2,600
Goodwill	2,824
Other assets	88
Total assets acquired	9,019
Current liabilities	1,030
Long-term liabilities	2,004
Total liabilities assumed	3,034
Total purchase price	5,985
Developed Technology [Member] \| Coyote Point Systems, Inc. [Member]
Business Acquisition [Line Items]
Finite-lived intangible assets	$ 2,300
Useful life of finite-lived intangible assets	6 years
Estimated remaining useful life of intangible assets		5 years	5 years
Customer Relationships [Member] \| Coyote Point Systems, Inc. [Member]
Business Acquisition [Line Items]
Finite-lived intangible assets	$ 500
Useful life of finite-lived intangible assets	6 years
In Process Research and Development [Member] \| Coyote Point Systems, Inc. [Member]
Business Acquisition [Line Items]
Indefinite-lived intangible assets	$ 2,600

Financial Instruments and Fair Value Measurements , Investments (Details) - USD ($) $ in Thousands	Sep. 30, 2014	Dec. 31, 2013
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$ 705,488	$ 726,001
Unrealized Gains	812	1,565
Unrealized Losses	(637)	(394)
Total	705,663	727,172
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Less Than 12 Months, Fair Value	263,896	205,428
Less Than 12 Months, Unrealized Losses	(636)	(394)
12 Months or Greater, Fair Value	3,017	500
12 Months or Greater, Unrealized Losses	(1)	0
Total, Fair Value	266,913	205,928
Total, Unrealized Losses	(637)	(394)
Available-for-sale Securities, Maturities, Fair Value [Abstract]
Due within one year	402,495	375,497
Due within one to three years	303,168	351,675
Total	705,663	727,172
Corporate debt securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	587,087	603,185
Unrealized Gains	763	1,506
Unrealized Losses	(606)	(374)
Total	587,244	604,317
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Less Than 12 Months, Fair Value	244,554	182,795
Less Than 12 Months, Unrealized Losses	(605)	(374)
12 Months or Greater, Fair Value	1,017	500
12 Months or Greater, Unrealized Losses	(1)	0
Total, Fair Value	245,571	183,295
Total, Unrealized Losses	(606)	(374)
Available-for-sale Securities, Maturities, Fair Value [Abstract]
Total	587,244	604,317
Commercial paper [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	58,250	69,356
Unrealized Gains	4	7
Unrealized Losses	(1)	0
Total	58,253	69,363
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Less Than 12 Months, Fair Value	2,396	7,897
Less Than 12 Months, Unrealized Losses	(1)	0
12 Months or Greater, Fair Value	0	0
12 Months or Greater, Unrealized Losses	0	0
Total, Fair Value	2,396	7,897
Total, Unrealized Losses	(1)	0
Available-for-sale Securities, Maturities, Fair Value [Abstract]
Total	58,253	69,363
Municipal bonds [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	33,260	38,815
Unrealized Gains	42	48
Unrealized Losses	(25)	(20)
Total	33,277	38,843
Available-for-sale Securities, Maturities, Fair Value [Abstract]
Total	33,277	38,843
Municipal bonds [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Less Than 12 Months, Fair Value	12,201	14,736
Less Than 12 Months, Unrealized Losses	(25)	(20)
12 Months or Greater, Fair Value	2,000	0
12 Months or Greater, Unrealized Losses	0	0
Total, Fair Value	14,201	14,736
Total, Unrealized Losses	(25)	(20)
Certificates of deposit and term deposits [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	21,143	12,645
Unrealized Gains	1	3
Unrealized Losses	0	0
Total	21,144	12,648
Available-for-sale Securities, Maturities, Fair Value [Abstract]
Total	21,144	12,648
U.S. government and agency securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	5,748	2,000
Unrealized Gains	2	1
Unrealized Losses	(5)	0
Total	5,745	2,001
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Less Than 12 Months, Fair Value	4,745
Less Than 12 Months, Unrealized Losses	(5)
12 Months or Greater, Fair Value	0
12 Months or Greater, Unrealized Losses	0
Total, Fair Value	4,745
Total, Unrealized Losses	(5)
Available-for-sale Securities, Maturities, Fair Value [Abstract]
Total	$ 5,745	$ 2,001

Commitments and Contingencies Warranties (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Movement in Standard Product Warranty Accrual [Roll Forward]
Accrual warranty balance - beginning of period	$ 3,037	$ 2,309
Warranty costs incurred	(2,597)	(2,670)
Provision for warranty for the period	3,786	3,134
Adjustment related to pre-existing warranties	(540)	274
Accrual warranty balance - end of period	$ 3,686	$ 3,047

Property and Equipment—Net (Tables)

9 Months Ended

Sep. 30, 2014

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment [Table Text Block]

Property and equipment—net consisted of the following (in thousands):



	September 30, 2014			December 31, 2013
Land	$	13,895		$	13,895
Building and building improvements	17,546			610
Evaluation units	29,181			23,442
Computer equipment and software	31,010			23,556
Furniture and fixtures	4,655			1,697
Construction-in-progress	5,326			10,947
Leasehold improvements	7,595			4,303
Total property and equipment	109,208			78,450
Less: accumulated depreciation	(52,396		)	(41,798		)
Property and equipment—net	$	56,812		$	36,652

Commitments and Contingencies (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Commitments and Contingencies Disclosure [Abstract]
Rent expense	$ 2,600	$ 2,400	$ 7,700	$ 7,100
Open purchase orders and other contractual obligations	76,355		76,355
Other contract commitments	$ 24,176		$ 24,176

Net Income Per Share (Tables)

9 Months Ended

Sep. 30, 2014

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 (in thousands, except per share amounts):



	Three Months Ended				Nine Months Ended
	September 30, 2014		September 30, 2013		September 30, 2014		September 30, 2013
Numerator:
Net income	$	4,056	$	11,029	$	18,530	$	32,257

Denominator:
Basic shares:
Weighted-average common stock outstanding-basic	164,294		162,906		163,289		162,150
Diluted shares:
Weighted-average common stock outstanding-basic	164,294		162,906		163,289		162,150
Effect of potentially dilutive securities:
Stock options	4,405		5,525		4,728		5,844
RSUs	993		213		692		50
ESPP	35		22		26		10
Weighted-average shares used to compute diluted net income per share	169,727		168,666		168,735		168,054
Net income per share:
Basic	$	0.02	$	0.07	$	0.11	$	0.20
Diluted	$	0.02	$	0.07	$	0.11	$	0.19

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



	Three Months Ended		Nine Months Ended
	September 30, 2014	September 30, 2013	September 30, 2014	September 30, 2013
Stock options	3,023	6,640	4,101	7,364
RSUs	696	1,416	879	2,383
ESPP	226	407	133	399
	3,945	8,463	5,113	10,146

Subsequent Event (Details) - USD ($) $ in Millions		9 Months Ended
Subsequent Event (Details) - USD ($) $ in Millions	Oct. 17, 2014	Sep. 30, 2014
Subsequent Event [Line Items]
Remaining authorized repurchase amount under the program		$ 127.9
Share Repurchase Program extended through December 31, 2015 [Member] \| Subsequent Event [Member]
Subsequent Event [Line Items]
Remaining authorized repurchase amount under the program	$ 124.9

Segment and Significant Customer Information (Tables)

9 Months Ended

Sep. 30, 2014

Segment Reporting [Abstract]

Revenue from External Customers by Geographic Areas [Table Text Block]

The following table sets forth revenue by geographic region (in thousands):



	Three Months Ended				Nine Months Ended
Revenue	September 30, 2014		September 30, 2013		September 30, 2014		September 30, 2013
Americas:
United States	$	50,329	$	40,654	$	144,794	$	114,257
Other Americas	31,889		24,794		88,241		63,844
Total Americas	82,218		65,448		233,035		178,101
Europe, Middle East, and Africa (“EMEA”)	66,157		51,373		185,354		149,500
Asia Pacific and Japan (“APAC”)	44,973		37,878		128,006		110,346
Total revenue	$	193,348	$	154,699	$	546,395	$	437,947

Schedule of Net Accounts Receivable from Significant Customers [Table Text Block]

The following customers, each of which is a distributor, accounted for 10% or more of our net revenues:



	Three Months Ended				Nine Months Ended
	September 30, 2014		September 30, 2013		September 30, 2014		September 30, 2013
Exclusive Networks Group	15	%	11	%	14	%	11	%
Fine Tec Computer	11	%	—		—		—

The following customers, each of which is a distributor, accounted for 10% or more of net accounts receivable:



	September 30, 2014		December 31, 2013
Exclusive Networks Group	13	%	13	%
Fine Tec Computer	15	%	—

Long-lived Assets by Geographic Areas [Table Text Block]

The following table sets forth property and equipment by geographic region (in thousands):



Property and Equipment—Net	September 30, 2014		December 31, 2013
Americas:
United States	$	45,234	$	29,334
Canada	5,884		4,372
Other Americas	411		45
Total Americas	51,529		33,751
EMEA	2,221		1,273
APAC	3,062		1,628
Total property and equipment—net	$	56,812	$	36,652

Business Combinations (Tables)

9 Months Ended

Sep. 30, 2014

Business Combinations [Abstract]

Schedule of Fair Value of Assets Acquired and Liabilities Assumed [Table Text Block]

The following table summarizes the fair value of assets acquired and liabilities assumed (in thousands):



Cash and cash equivalents	$	206
Other current assets	501
Finite-lived intangible assets	2,800
Indefinite-lived intangible assets	2,600
Goodwill	2,824
Other assets	88
Total assets acquired	9,019
Current liabilities	1,030
Long-term liabilities	2,004
Total liabilities assumed	3,034
Total purchase price	$	5,985

Subsequent Event	9 Months Ended
Subsequent Event	Sep. 30, 2014
Subsequent Events [Abstract]
Subsequent Event	SUBSEQUENT EVENT On October 17, 2014, our Board extended the share repurchase authorization under the Program through December 31, 2015. As of October 17, 2014, $124.9 million remained authorized for future share repurchases under the Program.

Financial Instruments and Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2014

Fair Value Disclosures [Abstract]

Summary of Investments [Table Text Block]

The following table summarizes our investments as of September 30, 2014 and December 31, 2013 (in thousands):



	September 30, 2014
	Amortized Cost		Unrealized Gains		Unrealized Losses			Fair Value
Corporate debt securities	$	587,087	$	763	$	(606	)	$	587,244
Commercial paper	58,250		4		(1		)	58,253
Municipal bonds	33,260		42		(25		)	33,277
Certificates of deposit and term deposits	21,143		1		—			21,144
U.S. government and agency securities	5,748		2		(5		)	5,745
Total available-for-sale securities	$	705,488	$	812	$	(637	)	$	705,663



	December 31, 2013
	Amortized Cost		Unrealized Gains		Unrealized Losses			Fair Value
Corporate debt securities	$	603,185	$	1,506	$	(374	)	$	604,317
Commercial paper	69,356		7		—			69,363
Municipal bonds	38,815		48		(20		)	38,843
Certificates of deposit and term deposits	12,645		3		—			12,648
U.S. government and agency securities	2,000		1		—			2,001
Total available-for-sale securities	$	726,001	$	1,565	$	(394	)	$	727,172

Schedule of Unrealized Loss on Investments [Table Text Block]



	September 30, 2014
	Less Than 12 Months					12 Months or Greater					Total
	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
Corporate debt securities	$	244,554	$	(605	)	$	1,017	$	(1	)	$	245,571	$	(606	)
Commercial paper	2,396		(1		)	—		—			2,396		(1		)
Municipal bonds	12,201		(25		)	2,000		—			14,201		(25		)
U.S. government and agency securities	4,745		(5		)	—		—			4,745		(5		)
Total available-for-sale securities	$	263,896	$	(636	)	$	3,017	$	(1	)	$	266,913	$	(637	)



	December 31, 2013
	Less Than 12 Months					12 Months or Greater				Total
	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
Corporate debt securities	$	182,795	$	(374	)	$	500	$	—	$	183,295	$	(374	)
Commercial paper	7,897		—			—		—		7,897		—
Municipal bonds	14,736		(20		)	—		—		14,736		(20		)
Total available-for-sale securities	$	205,428	$	(394	)	$	500	$	—	$	205,928	$	(394	)

Investments Classified by Contractual Maturity Date [Table Text Block]

The contractual maturities of our investments are as follows (in thousands):



	September 30, 2014		December 31, 2013
Due within one year	$	402,495	$	375,497
Due within one to three years	303,168		351,675
Total	$	705,663	$	727,172

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]

The following table presents the fair value of our financial assets and liabilities measured at fair value on a recurring basis as of September 30, 2014 and December 31, 2013 (in thousands):



	September 30, 2014								December 31, 2013
	Aggregate Fair Value		Quoted Prices in Active Markets For Identical Assets		Significant Other Observable Remaining Inputs		Significant Other Unobservable Remaining Inputs		Aggregate Fair Value		Quoted Prices in Active Markets For Identical Assets		Significant Other Observable Remaining Inputs		Significant Other Unobservable Remaining Inputs
			(Level 1)		(Level 2)		(Level 3)				(Level 1)		(Level 2)		(Level 3)
Assets:
Corporate debt securities	$	587,244	$	—	$	587,244	$	—	$	604,317	$	—	$	604,317	$	—
Commercial paper	58,253		—		58,253		—		71,363		—		71,363		—
Municipal bonds	33,277		—		33,277		—		38,843		—		38,843		—
Certificates of deposit and term deposits	21,144		—		21,144		—		12,648		—		12,648		—
Money market funds	20,125		20,125		—		—		5,724		5,724		—		—
U.S. government and agency securities	5,745		1,998		3,747		—		2,001		—		2,001		—
Total	$	725,788	$	22,123	$	703,665	$	—	$	734,896	$	5,724	$	729,172	$	—

Liabilities:
Contingent consideration	$	—	$	—	$	—	$	—	$	1,850	$	—	$	—	$	1,850
Total	$	—	$	—	$	—	$	—	$	1,850	$	—	$	—	$	1,850

Reported as:
Cash equivalents	$	20,125							$	7,724
Short-term investments	402,495								375,497
Long-term investments	303,168								351,675
Total	$	725,788							$	734,896

Schedule of Business Acquisitions by Acquisition, Contingent Consideration [Table Text Block]

The change in the fair value of our contingent consideration liability was as follows (in thousands):



As of December 31, 2013	$1,850
Less change in fair value of contingent consideration	(1,143)
As of March 31, 2014	707
Less change in fair value of contingent consideration	(707)
As of September 30, 2014	$—

Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 18,530	$ 32,257
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	16,519	11,511
Amortization of investment premiums	6,680	8,900
Stock-based compensation	42,313	31,784
Excess tax benefit from stock-based compensation	(4,325)	(2,504)
Other non-cash items—net	3,801	520
Changes in operating assets and liabilities:
Accounts receivable—Net	13,140	589
Inventory	(11,095)	(31,344)
Deferred tax assets	(12,186)	(14,806)
Prepaid expenses and other current assets	(2,781)	204
Other assets	(159)	893
Accounts payable	3,806	11,054
Accrued liabilities	2,818	3,630
Other liabilities	14,350	(999)
Accrued payroll and compensation	5,651	1,400
Deferred revenue	68,006	36,425
Income taxes payable	(3,850)	11,202
Net cash provided by operating activities	161,218	100,716
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of investments	(388,808)	(419,124)
Sales of investments	27,282	25,488
Maturities of investments	371,837	303,852
Purchases of property and equipment	(26,802)	(6,729)
Payments made in connection with acquisitions—net of cash acquired	(17)	(7,635)
Net cash used in investing activities	(16,508)	(104,148)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from issuance of common stock	40,529	24,470
Taxes paid related to net share settlement of equity awards	(8,506)	(966)
Excess tax benefit from stock-based compensation	4,325	2,504
Repurchase and retirement of common stock	(38,235)	0
Net cash (used in) provided by financing activities	(1,887)	26,008
EFFECT OF EXCHANGE RATES ON CASH AND CASH EQUIVALENTS	(600)	(1,005)
NET INCREASE IN CASH AND CASH EQUIVALENTS	142,223	21,571
CASH AND CASH EQUIVALENTS—Beginning of period	115,873	122,975
CASH AND CASH EQUIVALENTS—End of period	258,096	144,546
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION:
Cash paid for income taxes—net	38,755	19,721
NON-CASH INVESTING AND FINANCING ACTIVITIES:
Liability for purchase of property and equipment and asset retirement obligations	4,710	1,349
Liability incurred for repurchase of common stock	379	0
Liability incurred in connection with business acquisition	$ 0	$ 100

Condensed Consolidated Balance Sheets (Unaudited) Parenthetical - USD ($) shares in Thousands, $ in Thousands	Sep. 30, 2014	Dec. 31, 2013
Allowance for doubtful accounts and sales returns	$ 5,537	$ 4,605
Common Stock, par value	$ 0.001	$ 0.001
Common Stock, shares authorized	300,000	300,000
Common Stock, shares issued	164,904	161,535
Common Stock, shares outstanding	164,904	161,535

Segment and Significant Customer Information

9 Months Ended

Sep. 30, 2014

Segment Reporting [Abstract]

SEGMENT AND SIGNIFICNT CUSTOMER INFORMATION

SEGMENT AND SIGNIFICANT CUSTOMER INFORMATION

The following table sets forth revenue by geographic region (in thousands):



	Three Months Ended				Nine Months Ended
Revenue	September 30, 2014		September 30, 2013		September 30, 2014		September 30, 2013
Americas:
United States	$	50,329	$	40,654	$	144,794	$	114,257
Other Americas	31,889		24,794		88,241		63,844
Total Americas	82,218		65,448		233,035		178,101
Europe, Middle East, and Africa (“EMEA”)	66,157		51,373		185,354		149,500
Asia Pacific and Japan (“APAC”)	44,973		37,878		128,006		110,346
Total revenue	$	193,348	$	154,699	$	546,395	$	437,947

The following customers, each of which is a distributor, accounted for 10% or more of our net revenues:



	Three Months Ended				Nine Months Ended
	September 30, 2014		September 30, 2013		September 30, 2014		September 30, 2013
Exclusive Networks Group	15	%	11	%	14	%	11	%
Fine Tec Computer	11	%	—		—		—

The following customers, each of which is a distributor, accounted for 10% or more of net accounts receivable:



	September 30, 2014		December 31, 2013
Exclusive Networks Group	13	%	13	%
Fine Tec Computer	15	%	—

The following table sets forth property and equipment by geographic region (in thousands):



Property and Equipment—Net	September 30, 2014		December 31, 2013
Americas:
United States	$	45,234	$	29,334
Canada	5,884		4,372
Other Americas	411		45
Total Americas	51,529		33,751
EMEA	2,221		1,273
APAC	3,062		1,628
Total property and equipment—net	$	56,812	$	36,652

- 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
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
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+ Details

Commitments and Contingencies

9 Months Ended

Sep. 30, 2014

Commitments and Contingencies Disclosure [Abstract]

COMMITMENTS AND CONTINGENCIES

The following table summarizes our future principal contractual obligations as of September 30, 2014 (in thousands):



	Total		2014 (remainder)		2015		2016		2017		2018		Thereafter
Operating lease commitments	$	39,575	$	2,495	$	9,411	$	7,590	$	6,649	$	5,467	$	7,963
Less: Sublease rental income	642		193		449		—		—		—		—
Operating lease commitments—net	38,933		2,302		8,962		7,590		6,649		5,467		7,963
Purchase commitments	76,355		53,006		23,349		—		—		—		—
Other contractual commitments	24,176		19,530		3,592		813		241		—		—
Total	$	139,464	$	74,838	$	35,903	$	8,403	$	6,890	$	5,467	$	7,963

Operating Leases—We lease certain facilities under various non-cancelable operating leases, which expire through 2024. The terms of certain operating leases provide for renewal options. Rent expense is recognized using the straight-line method over the term of the lease. Rent expense was $2.6 million and $2.4 million during the three months ended September 30, 2014 and September 30, 2013, respectively. Rent expense was $7.7 million and $7.1 million during the nine months ended September 30, 2014 and September 30, 2013, respectively.

Purchase Commitments and Other Contractual Commitments—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 September 30, 2014, we had $76.4 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 September 30, 2014, we had $24.2 million in other purchase commitments.

Warranties—Accrued warranty activities are summarized as follows (in thousands):



	Nine Months Ended
	September 30, 2014			September 30, 2013
Accrued warranty balance—beginning of the period	$	3,037		$	2,309
Warranty costs incurred	(2,597		)	(2,670		)
Provision for warranty for the period	3,786			3,134
Adjustment related to pre-existing warranties	(540		)	274
Accrued warranty balance—end of the period	$	3,686		$	3,047

Litigation—We are involved in disputes, litigation, and other legal actions. For lawsuits where we are the defendant, we are in the process of defending these litigation matters, and while there can be no assurances and the outcome of these matters is currently not determinable, we currently believe that there are no existing claims or proceedings that are likely to have a material adverse effect on our financial position. There are many uncertainties associated with any litigation and these actions or other third-party claims against us may cause us to incur costly litigation or substantial settlement charges. In addition, the resolution of any intellectual property litigation may require us to make royalty payments, which could adversely affect our gross margins in future periods. If any of those events were to occur, our business, financial condition, results of operations, and cash flows could be adversely affected. The actual liability in any such matters may be materially different from our estimates, if any, which could result in the need to adjust the liability and record additional expenses. We have not recorded any accrual for loss contingencies associated with such legal proceedings; determined that an unfavorable outcome is probable or reasonably possible; or determined that the amount or range of any possible loss is reasonably estimable.

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 beyond indemnification for third-party claims of intellectual property infringement and that could potentially expose us to losses in excess of the amount received under the agreement. To date, there have been no awards under such indemnification provisions.

Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2014	Dec. 31, 2013
CURRENT ASSETS:
Cash and cash equivalents	$ 258,096	$ 115,873
Short-term investments	402,495	375,497
Accounts receivable—Net of allowance for doubtful accounts and sales returns of $5,537 and $4,605 as of September 30, 2014 and December 31, 2013, respectively	116,382	130,471
Inventory	51,344	48,672
Deferred tax assets	51,297	50,980
Prepaid expenses and other current assets	16,826	14,053
Total current assets	896,440	735,546
LONG-TERM INVESTMENTS	303,168	351,675
PROPERTY AND EQUIPMENT—Net	56,812	36,652
DEFERRED TAX ASSETS	42,276	30,058
GOODWILL	2,824	2,872
OTHER INTANGIBLE ASSETS—Net	3,104	6,841
OTHER ASSETS	7,977	4,820
TOTAL ASSETS	1,312,601	1,168,464
CURRENT LIABILITIES:
Accounts payable	36,520	35,599
Accrued liabilities	25,662	27,380
Accrued payroll and compensation	40,692	34,997
Income taxes payable	2,490	21,421
Deferred revenue	329,132	293,664
Total current liabilities	434,496	413,061
DEFERRED REVENUE	170,880	138,964
INCOME TAXES PAYABLE	40,532	30,208
OTHER LIABILITIES	17,467	471
Total liabilities	663,375	582,704
COMMITMENTS AND CONTINGENCIES (Note 9)
STOCKHOLDERS' EQUITY:
Common stock, $0.001 par value — 300,000 shares authorized; 164,904 and 161,535 shares issued and outstanding as of September 30, 2014 and December 31, 2013, respectively	165	161
Additional paid-in capital	537,450	462,644
Accumulated other comprehensive income	114	1,092
Retained earnings	111,497	121,863
Total stockholders’ equity	649,226	585,760
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY	$ 1,312,601	$ 1,168,464

Commitments and Contingencies Minimum Operating Lease Payments (Details) $ in Thousands	Sep. 30, 2014 USD ($)
Operating Lease Commitments:
Operating lease commitments, 2014 (remainder)	$ 2,495
Operating lease commitments, 2015	9,411
Operating lease commitments, 2016	7,590
Operating lease commitments, 2017	6,649
Operating lease commitments, 2018	5,467
Operating lease commitments, Thereafter	7,963
Operating lease commitments	39,575
Sublease Commitments:
Sublease rental income, 2014 (remainder)	193
Sublease rental income, 2015	449
Sublease rental income, 2016	0
Sublease rental income, 2017	0
Sublease rental income, 2018	0
Sublease rental income, Thereafter	0
Sublease rental income	642
Operating commitments, net:
Operating commitments, net, 2014 (remainder)	2,302
Operating commitments, net, 2015	8,962
Operating commitments, net, 2016	7,590
Operating commitments, net, 2017	6,649
Operating commitments, net, 2018	5,467
Operating commitments, net, Thereafter	7,963
Operating commitments, net	38,933
Purchase commitments:
Purchase commitments, 2014 (remainder)	53,006
Purchase commitments, 2015	23,349
Purchase commitments, 2016	0
Purchase commitments, 2017	0
Purchase commitments, 2018	0
Purchase commitments, Thereafter	0
Purchase commitments	76,355
Other contract commitments:
Other contract commitments, 2014 (remainder)	19,530
Other contract commitments, 2015	3,592
Other contract commitments, 2016	813
Other contract commitments, 2017	241
Other contract commitments, 2018	0
Other contract commitments, Thereafter	0
Other contract commitments	24,176
Contractual obligations, 2014 (remainder)	74,838
Contractual obligations, 2015	35,903
Contractual obligations, 2016	8,403
Contractual obligations, 2017	6,890
Contractual obligations, 2018	5,467
Contractual obligations, Thereafter	7,963
Contractual obligations	$ 139,464

Stockholders' Equity , Share Repurchase Program (Details) - USD ($) shares in Millions, $ in Millions		3 Months Ended	9 Months Ended
	Dec. 06, 2013	Sep. 30, 2014	Sep. 30, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock repurchase program, authorized amount	$ 200.0
Stock repurchased in the period, shares		0.4	1.4
Stock repurchased in the period, value		$ 10.7	$ 33.2
Remaining authorized repurchase amount under the program			$ 127.9

Net Income Per Share , Calculation of Basic and Diluted (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Earnings Per Share [Line Items]
Net income	$ 4,056	$ 11,029	$ 18,530	$ 32,257
Basic shares:
Weighted-average common shares outstanding-basic (in shares)	164,294	162,906	163,289	162,150
Diluted shares:
Weighted-average common shares outstanding-basic (in shares)	164,294	162,906	163,289	162,150
Effect of potentially dilutive securities:
Weighted-average shares used to compute diluted net income per share (in shares)	169,727	168,666	168,735	168,054
Basic (in dollars per share)	$ 0.02	$ 0.07	$ 0.11	$ 0.20
Diluted (in dollars per share)	$ 0.02	$ 0.07	$ 0.11	$ 0.19
Stock Options [Member]
Effect of potentially dilutive securities:
Employee stock options and purchase rights (in shares)	4,405	5,525	4,728	5,844
Restricted Stock Units (RSUs) [Member]
Effect of potentially dilutive securities:
Employee stock options and purchase rights (in shares)	993	213	692	50
ESPP [Member]
Effect of potentially dilutive securities:
Employee stock options and purchase rights (in shares)	35	22	26	10

Goodwill and Other Intangible Assets—Net

9 Months Ended

Sep. 30, 2014

Goodwill and Intangible Assets Disclosure [Abstract]

GOODWILL AND OTHER INTANGIBLE ASSETS - NET

GOODWILL AND OTHER INTANGIBLE ASSETS—Net

We recorded $2.8 million of goodwill from the acquisition of Coyote. There were no impairments to goodwill during the three and nine months ended September 30, 2014.

During the nine months ended September 30, 2014, we reassessed the fair value and the remaining useful life of the developed technologies acquired from Coyote. Based on this reassessment, we recorded an impairment charge of $2.4 million to adjust the total fair value of the other intangible assets acquired from Coyote to $2.0 million. The impairment charge is included within Cost of product revenue in the condensed consolidated statements of operations. Subsequent to the impairment, the remaining carrying value of the Coyote developed technologies will be amortized on a straight-line basis over an estimated remaining useful life of approximately five years.

The following tables present other intangible assets—net (in thousands):



	September 30, 2014
	Gross		Accumulated Amortization		Net
Other intangible assets—net:
Developed technology	$	5,606	$	2,877	$	2,729
Customer relationships	500		125		375
Total other intangible assets—net	$	6,106	$	3,002	$	3,104



	December 31, 2013
	Gross		Accumulated Amortization		Net
Other intangible assets—net:
Developed technology	$	8,971	$	2,568	$	6,403
Customer relationships	500		62		438
Total other intangible assets—net	$	9,471	$	2,630	$	6,841

Amortization expense was $0.2 million and $0.4 million during the three months ended September 30, 2014 and September 30, 2013, respectively. Amortization expense was $1.2 million and $1.1 million for the nine months ended September 30, 2014 and September 30, 2013, respectively. The following table summarizes estimated future amortization expense of Other intangible assets—net (in thousands):



	Amount
Years Ending December 31:
2014 (remainder)	$	273
2015	1,091
2016	785
2017	425
2018	425
Thereafter	105
Total	$	3,104

Inventory

9 Months Ended

Sep. 30, 2014

Inventory Disclosure [Abstract]

INVENTORY

Inventory consisted of the following (in thousands):



	September 30, 2014		December 31, 2013
Raw materials	$	5,922	$	4,319
Finished goods	40,370		40,093
Consigned inventory	5,052		4,260
Inventory	$	51,344	$	48,672

Foreign Currency Derivatives

9 Months Ended

Sep. 30, 2014

Derivative Instruments and Hedging Activities Disclosure [Abstract]

FOREIGN CURRENCY DERIVATIVES

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 Canadian dollar (“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, including forward contracts, 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 of one month. We record changes in the fair value of forward exchange contracts related to balance sheet accounts as Other (expense) income—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 Other (expense) income—net in our condensed 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 and are focused on CAD, long-term material changes in the value of the U.S. dollar against other foreign currencies, such as the GBP and EUR could adversely impact our operating expenses in the future.

The notional amount of forward exchange contracts to hedge balance sheet accounts as of September 30, 2014 and December 31, 2013 were (in thousands):



	Buy/Sell	Notional
Currency—As of September 30, 2014
CAD	Buy	$	13,242

Currency—As of December 31, 2013
CAD	Buy	$	21,867

- Definition

The entire disclosure for derivative instruments and hedging activities including, but not limited to, risk management strategies, non-hedging derivative instruments, assets, liabilities, revenue and expenses, and methodologies and assumptions used in determining the amounts.

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+ Details

Goodwill and Other Intangible Assets—Net Goodwill (Details) - USD ($) $ in Thousands	Sep. 30, 2014	Dec. 31, 2013
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill	$ 2,824	$ 2,872

Net Income Per Share , Anti Dilutive Securities (Details) - shares shares in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive securities (in shares)	3,945	8,463	5,113	10,146
Stock Options [Member] \| Stock Compensation Plan [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive securities (in shares)	3,023	6,640	4,101	7,364
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)	696	1,416	879	2,383
ESPP [Member] \| Stock Compensation Plan [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive securities (in shares)	226	407	133	399

Summary of Significant Accounting Policies

9 Months Ended

Sep. 30, 2014

Accounting Policies [Abstract]

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES



	Estimated Useful Lives
Building and building improvements	20 years
Evaluation units	1 year
Computer equipment and software	1-2 years
Furniture and fixtures	3 - 5 years
Leasehold improvements	Shorter of useful life or lease term

Recent Accounting Pronouncement—In May 2014, the Financial Accounting Standards Board issued Accounting Standards Update No. 2014-09 (Topic 606) - Revenue from Contracts with Customers (“ASU 2014-09”) to create a single, joint revenue standard that is consistent across all industries and markets for companies that prepare their financial statements in accordance with U.S. GAAP. Under ASU 2014-09, an entity is required to recognize revenue upon the transfer of promised goods or services to customers in an amount that reflects the consideration the entity expects to be entitled to receive in exchange for those goods or services. ASU 2014-09 is effective for us beginning on January 1, 2017. We are currently evaluating the impact of ASU 2014-09 on our consolidated financial statements.

Commitments and Contingencies (Tables)

9 Months Ended

Sep. 30, 2014

Commitments and Contingencies Disclosure [Abstract]

Contractual Obligation, Fiscal Year Maturity Schedule [Table Text Block]

The following table summarizes our future principal contractual obligations as of September 30, 2014 (in thousands):



	Total		2014 (remainder)		2015		2016		2017		2018		Thereafter
Operating lease commitments	$	39,575	$	2,495	$	9,411	$	7,590	$	6,649	$	5,467	$	7,963
Less: Sublease rental income	642		193		449		—		—		—		—
Operating lease commitments—net	38,933		2,302		8,962		7,590		6,649		5,467		7,963
Purchase commitments	76,355		53,006		23,349		—		—		—		—
Other contractual commitments	24,176		19,530		3,592		813		241		—		—
Total	$	139,464	$	74,838	$	35,903	$	8,403	$	6,890	$	5,467	$	7,963

Schedule of Product Warranty Liability [Table Text Block]

Warranties—Accrued warranty activities are summarized as follows (in thousands):



	Nine Months Ended
	September 30, 2014			September 30, 2013
Accrued warranty balance—beginning of the period	$	3,037		$	2,309
Warranty costs incurred	(2,597		)	(2,670		)
Provision for warranty for the period	3,786			3,134
Adjustment related to pre-existing warranties	(540		)	274
Accrued warranty balance—end of the period	$	3,686		$	3,047

Accumulated Other Comprehensive Income (Reclassification Out of Accumulated Other Comprehensive Income) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other expense—net	$ (1,005)	$ (1,151)	$ (1,968)	$ (1,036)
Provision for income taxes	(11,729)	(7,381)	(22,901)	(18,142)
NET INCOME	$ 4,056	$ 11,029	18,530	$ 32,257
Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other expense—net			(9)
Provision for income taxes			3
NET INCOME			$ (6)

- Definition

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

+ References

+ Details

Defined Contribution Plans (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Compensation and Retirement Disclosure [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	$ 0.7	$ 0.6	$ 1.9	$ 1.6

Accumulated Other Comprehensive Income

9 Months Ended

Sep. 30, 2014

Other Comprehensive Income (Loss), Net of Tax [Abstract]

ACCUMULATED OTHER COMPREHENSIVE INCOME

The following table summarizes the changes in accumulated balances of other comprehensive income for the nine months ended September 30, 2014 (in thousands):



	September 30, 2014
	Foreign Currency Translation Gains And Losses			Unrealized Gains And Losses On Investments			Tax Benefit Or Provision Related To Items Of Other Comprehensive Income Or Loss			Total
Balance as of December 31, 2013	$	333		$	1,168		$	(409	)	$	1,092
Other comprehensive income before reclassifications	(333		)	(984		)	345			(972		)
Amounts reclassified from accumulated other comprehensive income	—			(9		)	3			(6		)
Net current-period other comprehensive income	(333		)	(993		)	348			(978		)
Balance as of September 30, 2014	$	—		$	175		$	(61	)	$	114

The following table provides details about the reclassification out of accumulated other comprehensive income for the nine months ended September 30, 2014 (in thousands):



September 30, 2014
Details About Accumulated Other Comprehensive Income Components	Amount Reclassified From Accumulated Other Comprehensive Income			Affected Line Item In The Statement Where Net Income Is Presented
Unrealized gains on investments	$	(9	)	Other expense—net
Tax provision related to items of other comprehensive income or loss	3			Provision for income taxes
Total reclassification for the period	$	(6	)

- Definition

The entire disclosure for comprehensive income, which includes, but is not limited to, 1) the amount of income tax expense or benefit allocated to each component of other comprehensive income, including reclassification adjustments, 2) the reclassification adjustments for each classification of other comprehensive income and 3) the ending accumulated balances for each component of comprehensive income.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 15
-URI http://asc.fasb.org/extlink&oid=28358780&loc=d3e689-108580

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 1A
-URI http://asc.fasb.org/extlink&oid=28358780&loc=SL7669619-108580

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=28358780&loc=d3e640-108580

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 17
-URI http://asc.fasb.org/extlink&oid=28358780&loc=d3e716-108580

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 16
-URI http://asc.fasb.org/extlink&oid=28358780&loc=d3e709-108580

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 11
-URI http://asc.fasb.org/extlink&oid=28358780&loc=d3e637-108580

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 14
-URI http://asc.fasb.org/extlink&oid=28358780&loc=d3e681-108580

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Reclassification Adjustments
-URI http://asc.fasb.org/extlink&oid=6522872

+ Details

Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
Income Taxes (Details) - USD ($) $ in Millions	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Income Tax Disclosure [Abstract]
Effective tax rate, percent	74.00%	40.00%	55.00%	36.00%
Unrecognized tax benefits	$ 39.4		$ 39.4		$ 30.2
Unrecognized tax benefits that would favorably impact effective tax rate	39.4		39.4
Estimated interest accrued related to uncertain tax positions	$ 1.6		$ 1.6

Financial Instruments and Fair Value Measurements , Fair Value Measurements (Details) - Recurring [Member] - USD ($) $ in Thousands	Sep. 30, 2014	Mar. 31, 2014	Dec. 31, 2013
Estimate of Fair Value [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Financial Assets, Fair Value Disclosure	$ 725,788		$ 734,896
Contingent consideration	0	$ 707	1,850
Financial Liabilities, Fair Value Disclosure	0		1,850
Estimate of Fair Value [Member] \| Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Financial Assets, Fair Value Disclosure	22,123		5,724
Estimate of Fair Value [Member] \| Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Financial Assets, Fair Value Disclosure	703,665		729,172
Estimate of Fair Value [Member] \| Corporate debt securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale securities, Fair Value Disclosure	587,244		604,317
Estimate of Fair Value [Member] \| Corporate debt securities [Member] \| Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale securities, Fair Value Disclosure	587,244		604,317
Estimate of Fair Value [Member] \| Commercial paper [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale securities, Fair Value Disclosure	58,253		71,363
Estimate of Fair Value [Member] \| Commercial paper [Member] \| Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale securities, Fair Value Disclosure	58,253		71,363
Estimate of Fair Value [Member] \| Municipal bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale securities, Fair Value Disclosure	33,277		38,843
Estimate of Fair Value [Member] \| Municipal bonds [Member] \| Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale securities, Fair Value Disclosure	33,277		38,843
Estimate of Fair Value [Member] \| Certificates of deposit and term deposits [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale securities, Fair Value Disclosure	21,144		12,648
Estimate of Fair Value [Member] \| Certificates of deposit and term deposits [Member] \| Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale securities, Fair Value Disclosure	21,144		12,648
Estimate of Fair Value [Member] \| Money market funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale securities, Fair Value Disclosure	20,125		5,724
Estimate of Fair Value [Member] \| Money market funds [Member] \| Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale securities, Fair Value Disclosure	20,125		5,724
Estimate of Fair Value [Member] \| U.S. government and agency securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale securities, Fair Value Disclosure	5,745		2,001
Estimate of Fair Value [Member] \| U.S. government and agency securities [Member] \| Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale securities, Fair Value Disclosure	1,998		0
Estimate of Fair Value [Member] \| U.S. government and agency securities [Member] \| Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale securities, Fair Value Disclosure	3,747		2,001
Reported as [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Financial Assets, Fair Value Disclosure	725,788		734,896
Reported as [Member] \| Cash equivalents [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale securities, Fair Value Disclosure	20,125		7,724
Reported as [Member] \| Short-term investments [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale securities, Fair Value Disclosure	402,495		375,497
Reported as [Member] \| Long-term investments [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale securities, Fair Value Disclosure	303,168		351,675
Income Approach Valuation Technique [Member] \| Estimate of Fair Value [Member] \| Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Contingent consideration	0		1,850
Financial Liabilities, Fair Value Disclosure	$ 0		$ 1,850

Foreign Currency Derivatives (Details) - USD ($) $ in Thousands	Sep. 30, 2014	Dec. 31, 2013
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Notional amount of forward exchange contracts	$ 13,242	$ 21,867

Summary of Significant Accounting Policies , Property and Equipment (Details)	9 Months Ended
	Sep. 30, 2014
Building and building improvements [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, useful life	20 years
Evaluation units [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, useful life	1 year
Minimum [Member] \| Computer equipment and software [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, useful life	1 year
Minimum [Member] \| Furniture and fixtures [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, useful life	3 years
Maximum [Member] \| Computer equipment and software [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, useful life	2 years
Maximum [Member] \| Furniture and fixtures [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, useful life	5 years

Stockholders' Equity , Restricted Stock Units Activity (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]
Amount withheld for taxes			$ 8,506	$ 966
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Balance, beginning			4,199
Granted			3,359
Forfeited			(342)
Vested			(1,197)
Balance, ending	6,019		6,019
RSUs expected to vest—September 30, 2014	5,699		5,699
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)—beginning			$ 22.00
Granted, weighted-average grant-date fair value per share (in dollars per share)			22.44
Forfeited, weighted-average grant-date fair value per share (in dollars per share)			21.85
Vested, weighted-average grant-date fair value per share (in dollars per share)			22.31
Balance, weighted-average grant-date fair value per share (in dollars per share)—ending	$ 22.27		22.27
RSUs expected to vest, weighted-average grant-date fair value per share (in dollars per share)—March 31, 2014	$ 22.27		$ 22.27
Compensation cost not yet recognized	$ 128,300		$ 128,300
Compensation cost not yet recognized period of recognition			3 years 7 days
Shares withheld for taxes	124	45	381	45
Amount withheld for taxes	$ 2,985	$ 966	$ 8,506	$ 966

Accumulated Other Comprehensive Income (Tables)

9 Months Ended

Sep. 30, 2014

Other Comprehensive Income (Loss), Net of Tax [Abstract]

Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]

The following table summarizes the changes in accumulated balances of other comprehensive income for the nine months ended September 30, 2014 (in thousands):



	September 30, 2014
	Foreign Currency Translation Gains And Losses			Unrealized Gains And Losses On Investments			Tax Benefit Or Provision Related To Items Of Other Comprehensive Income Or Loss			Total
Balance as of December 31, 2013	$	333		$	1,168		$	(409	)	$	1,092
Other comprehensive income before reclassifications	(333		)	(984		)	345			(972		)
Amounts reclassified from accumulated other comprehensive income	—			(9		)	3			(6		)
Net current-period other comprehensive income	(333		)	(993		)	348			(978		)
Balance as of September 30, 2014	$	—		$	175		$	(61	)	$	114

Reclassification out of Accumulated Other Comprehensive Income [Table Text Block]

The following table provides details about the reclassification out of accumulated other comprehensive income for the nine months ended September 30, 2014 (in thousands):



September 30, 2014
Details About Accumulated Other Comprehensive Income Components	Amount Reclassified From Accumulated Other Comprehensive Income			Affected Line Item In The Statement Where Net Income Is Presented
Unrealized gains on investments	$	(9	)	Other expense—net
Tax provision related to items of other comprehensive income or loss	3			Provision for income taxes
Total reclassification for the period	$	(6	)

Goodwill and Other Intangible Assets—Net Finite-lived Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Finite-Lived Intangible Assets, Net [Abstract]
Gross	$ 6,106		$ 6,106		$ 9,471
Accumulated Amortization	3,002		3,002		2,630
Total	3,104		3,104		6,841
Amortization expense	200	$ 400	1,200	$ 1,100
Fiscal Years:
2014 (remainder)	273		273
2015	1,091		1,091
2016	785		785
2017	425		425
2018	425		425
Thereafter	105		105
Total	3,104		3,104		6,841
Developed Technology [Member]
Finite-Lived Intangible Assets, Net [Abstract]
Gross	5,606		5,606		8,971
Accumulated Amortization	2,877		2,877		2,568
Total	2,729		2,729		6,403
Fiscal Years:
Total	2,729		2,729		6,403
Customer Relationships [Member]
Finite-Lived Intangible Assets, Net [Abstract]
Gross	500		500		500
Accumulated Amortization	125		125		62
Total	375		375		438
Fiscal Years:
Total	375		375		$ 438
Coyote Point Systems, Inc. [Member] \| Developed Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, carrying value	$ 2,000		2,000
Estimated remaining useful life of intangible assets	5 years	5 years
Cost of Product Revenue [Member] \| Coyote Point Systems, Inc. [Member]
Finite-Lived Intangible Assets [Line Items]
Impairment of intangible assets			$ 2,400
Cost of Product Revenue [Member] \| Coyote Point Systems, Inc. [Member] \| Developed Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Impairment of intangible assets	$ 2,400