GoPro (GPRO) 10-Q 29 Apr 15 2015 Q1 Quarterly report Financial data

Document_Entity_and_Informatio

Document, Entity and Information	3 Months Ended
	Mar. 31, 2015
Class of Stock [Line Items]
Entity Registrant Name	GoPro, Inc.
Entity Central Index Key	1500435
Current Fiscal Year End Date	-19
Entity Filer Category	Non-accelerated Filer
Document Type	10-Q
Document Period End Date	31-Mar-15
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	Q1
Amendment Flag	FALSE
Common Class A [Member]
Class of Stock [Line Items]
Entity Common Stock, Shares Outstanding	89,404,158
Common Class B [Member]
Class of Stock [Line Items]
Entity Common Stock, Shares Outstanding	44,613,243

Condensed_Consolidated_Balance

Condensed Consolidated Balance Sheets (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Current assets:
Cash and cash equivalents	$323,165	$319,929
Marketable securities	168,741	102,327
Accounts receivable, net	105,970	183,992
Inventory	164,044	153,026
Prepaid expenses and other current assets	60,334	63,769
Total current assets	822,254	823,043
Property and equipment, net	43,890	41,556
Intangible assets and goodwill	24,874	17,032
Other long-term assets	39,616	36,060
Total assets	930,634	917,691
Current liabilities:
Accounts payable	91,919	126,240
Accrued liabilities	103,350	115,775
Deferred revenue	12,327	14,022
Income taxes payable	2,940	2,732
Total current liabilities	210,536	258,769
Other long-term liabilities	18,378	17,718
Total liabilities	228,914	276,487
Commitments, contingencies and guarantees (see Note 9)
Stockholders’ equity:
Common stock and additional paid-in capital, $0.0001 par value, 500,000 Class A shares authorized, 89,404 and 52,091 shares issued and outstanding at March 31, 2015 and December 31, 2014, respectively; 150,000 Class B shares authorized, 44,613 and 77,023 shares issued and outstanding at March 31, 2015 and December 31, 2014, respectively	576,764	533,000
Retained earnings	124,956	108,204
Total stockholders’ equity	701,720	641,204
Total liabilities and stockholders’ equity	$930,634	$917,691

Condensed_Consolidated_Balance1

Condensed Consolidated Balance Sheets (Parenthetical) (USD $)	Mar. 31, 2015	Dec. 31, 2014
Common stock, par value (in dollars per share)	$0.00	$0.00
Common Class A [Member]
Common stock, shares authorized	500,000,000	500,000,000
Common Stock, shares, issued	89,404,000	52,091,000
Common stock, shares, outstanding	89,404,000	52,091,000
Common Class B [Member]
Common stock, shares authorized	150,000,000	150,000,000
Common Stock, shares, issued	44,613,000	77,023,000
Common stock, shares, outstanding	44,613,000	77,023,000

Condensed_Consolidated_Stateme

Condensed Consolidated Statements of Operations (USD $)	3 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Income Statement [Abstract]
Revenue	$363,109	$235,716
Cost of revenue	199,376	139,202
Gross profit	163,733	96,514
Operating expenses:
Research and development	49,437	28,739
Sales and marketing	56,369	41,341
General and administrative	35,659	9,878
Total operating expenses	141,465	79,958
Operating income	22,268	16,556
Other expense, net	-2,244	-1,625
Income before income taxes	20,024	14,931
Income tax expense	3,272	3,882
Net income	16,752	11,049
Less: net income allocable to participating securities	0	3,040
Net income attributable to common stockholders—basic	16,752	8,009
Add: net income allocable to dilutive participating securities	0	443
Net income attributable to common stockholders—diluted	$16,752	$8,452
Net income per share attributable to common stockholders - Basic (in dollars per share)	$0.13	$0.10
Net income per share attributable to common stockholders - Diluted (in dollars per share)	$0.11	$0.08
Weighted-average shares used to compute net income per share attributable to common stockholders - Basic (in shares)	132,278	81,582
Weighted-average shares used to compute net income per share attributable to common stockholders - Diluted (in shares)	148,573	100,783

Condensed_Consolidated_Stateme1

Condensed Consolidated Statements of Cash Flows (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Operating activities:
Net income	$16,752	$11,049
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	5,369	3,811
Stock-based compensation	26,501	4,037
Foreign currency remeasurement and transaction losses	2,190	0
Deferred taxes	-1,590	-330
Other	639	247
Changes in operating assets and liabilities:
Accounts receivable, net	77,684	75,359
Inventory	-11,017	21,807
Prepaids and other assets	1,451	1,068
Accounts payable and other liabilities	-50,017	-97,042
Deferred revenue	-1,695	908
Net cash provided by operating activities	66,267	20,914
Investing activities:
Purchases of property and equipment	-5,207	-4,701
Purchases of marketable securities	-79,368	0
Sales and maturities of marketable securities	12,503	0
Business acquisitions	-5,100	-3,200
Net cash used in investing activities	-77,172	-7,901
Financing activities:
Proceeds from issuance of common stock, net of repurchases	12,325	522
Taxes paid related to net share settlement of equity awards	-1,321	0
Excess tax benefit from stock-based compensation	6,067	69
Payment of deferred public offering costs	-903	-799
Repayment of debt	0	-3,000
Net cash provided by (used in) financing activities	16,168	-3,208
Effect of exchange rate changes on cash and cash equivalents	-2,027	0
Net increase in cash and cash equivalents	3,236	9,805
Cash and cash equivalents at beginning of period	319,929	101,410
Cash and cash equivalents at end of period	$323,165	$111,215

Business_overview

Business overview	3 Months Ended
	Mar. 31, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Business overview	Business overview
	GoPro, Inc. (GoPro or the Company) produces mountable and wearable cameras and accessories, which the Company refers to as capture devices. Additionally, GoPro develops and provides desktop editing software and mobile applications for free to consumers. The Company’s capture devices are sold globally through retailers, wholesale distributors and on the Company’s website. The Company has wholly-owned subsidiaries in Hong Kong, Germany, the Netherlands, and the Cayman Islands. The Company’s corporate headquarters are located in San Mateo, California with additional operational support offices in Hong Kong, the Netherlands, and Shenzhen, China.

Basis_of_presentation_and_summ

Basis of presentation and summary of significant accounting policies	3 Months Ended
	Mar. 31, 2015
Accounting Policies [Abstract]
Basis of presentation and summary of significant accounting policies	Basis of presentation and summary of significant accounting policies
	The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with U.S. generally accepted accounting principles (GAAP) and in accordance with the interim period reporting requirements of Form 10-Q. The unaudited condensed consolidated financial statements reflect all adjustments (consisting only of normal recurring adjustments) that management believes are necessary for the fair presentation of the Company's financial condition, results of operations, and cash flows for the periods presented, but are not necessarily indicative of the results expected for the full fiscal year or any other future period. The condensed consolidated balance sheet at December 31, 2014 has been derived from the audited financial statements at that date, but does not include all of the disclosures required by GAAP.  This quarterly report should be read in conjunction with the Company's Annual Report on Form 10-K (Annual Report) for the year ended December 31, 2014. There have been no significant changes in the Company’s accounting policies from those disclosed in the footnotes to the audited financial statements contained in its Annual Report on Form 10-K for the year ended December 31, 2014.
	Principles of consolidation
	These consolidated financial statements include all the accounts of the Company and its wholly-owned subsidiaries. Unless otherwise specified, references to the Company are references to GoPro, Inc. and its consolidated subsidiaries. All intercompany balances and transactions have been eliminated in consolidation.
	Use of estimates
	The preparation of financial statements in accordance with GAAP requires management to make estimates and assumptions that affect the amounts reported and disclosed in the Company’s condensed consolidated financial statements and accompanying notes. The Company regularly evaluates estimates and assumptions in several areas, including those related to: the collectability of accounts receivable, stock-based compensation, inventory valuation, warranty liabilities, revenue recognition and related estimates (including sales returns, web-based sale deliveries at period-end, implied post contract support, and marketing allowances), the valuation and useful lives of intangible assets and property and equipment, the valuation of deferred income tax assets, and uncertain tax positions. The Company bases its estimates and assumptions on historical experience and on various other factors that it believes to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. Actual results could differ materially from management's estimates. To the extent there are material differences between the estimates and the actual results, future results of operations will be affected.
	Comprehensive income
	For all periods presented, comprehensive income equaled net income. Therefore, the condensed consolidated statements of comprehensive income have been omitted from the condensed consolidated financial statements.
	Recent accounting pronouncements
	In May 2014, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update No. 2014-09 (ASU 2014-09), Revenue from Contracts with Customers, which amends the existing accounting standards for revenue recognition. ASU 2014-09 is based on principles that govern the recognition of revenue at an amount to which an entity expects to be entitled when products are transferred to customers. ASU 2014-09 becomes effective for the Company on January 1, 2017. Early application is not permitted. In April 2015, the FASB proposed a one-year deferral of the effective date of the new revenue standard. If approved, the new standard will become effective for the Company on January 1, 2018 and can be adopted either retrospectively to each prior reporting period presented or as a cumulative effect adjustment as of the date of adoption. The Company is currently evaluating the impact the adoption of ASU 2014-09 will have on the Company's consolidated financial statements.
	Correction of error
	During the preparation of the condensed consolidated financial statements for the period ended June 30, 2014, the Company determined that within the consolidated statement of cash flows previously disclosed for the quarter ended March 31, 2014, net cash provided by operating activities was understated by $3.2 million and net cash used for investing activities was understated by the same amount. The Company has properly presented its condensed consolidated statement of cash flows for the three months ended March 31, 2014 and determined that this revision is not material to prior periods.
	Prior Period Reclassifications
	Reclassifications of certain prior period amounts in the condensed consolidated financial statements have been made to conform to the current period presentation.

Balance_sheet_components

Balance sheet components	3 Months Ended
	Mar. 31, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Balance sheet components	Balance sheet components
	Inventory
	Inventory consisted of the following:
	(in thousands)	March 31,				December 31,
		2015				2014
	Components	$	3,301			$	4,324
	Finished goods	160,743				148,702
	Total inventory	$	164,044			$	153,026
	Property and equipment, net
	Property and equipment, net consisted of the following:
	(in thousands)	Useful life		March 31,				December 31,
		(in years)		2015				2014
	Leasehold improvements	3–7		$	23,037			$	22,787
	Computers, software, equipment and furniture	2–4		27,420				24,636
	Tooling	1–4		17,639				16,159
	Construction in progress			6,037				3,944
	Tradeshow equipment and other	5-Feb		3,864				3,830
	Gross property and equipment			77,997				71,356
	Less: Accumulated depreciation and amortization			-34,107				-29,800
	Property and equipment, net			$	43,890			$	41,556
	Acquired intangible assets and goodwill
	Intangible assets and goodwill increased from $17.0 million at December 31, 2014 to $24.9 million at March 31, 2015 due to the acquisition of a development-stage company in March 2015, which was accounted for as a business combination. The intangible assets acquired were recorded as in-process research and development. The acquisition did not have an impact on the Company’s condensed consolidated statements of operations. There were no impairments to intangible assets and goodwill during the three months ended March 31, 2015.

Fair_value_measurements

Fair value measurements	3 Months Ended
	Mar. 31, 2015
Fair Value Disclosures [Abstract]
Fair value measurements	Fair value measurements
	The Company’s assets that are measured at fair value on a recurring basis, by level, within the fair value hierarchy are summarized as follows:
		31-Mar-15						31-Dec-14
	(in thousands)	Level 1		Level 2		Total		Level 1		Level 2		Total
	Cash equivalents:
	Money market funds	$	16,618	$	—	$	16,618	$	80,968	$	—	$	80,968
	Corporate debt securities	—		—		—		—		2,000		2,000
	Total cash equivalents	$	16,618	$	—	$	16,618	$	80,968	$	2,000	$	82,968
	Marketable securities:
	U.S. treasury securities	$	2,498	$	—	$	2,498	$	1,994	$	—	$	1,994
	U.S. agency securities	—		15,287		15,287		—		7,020		7,020
	Commercial paper	—		3,697		3,697		—		2,497		2,497
	Corporate debt securities	—		147,259		147,259		—		90,816		90,816
	Total marketable securities	$	2,498	$	166,243	$	168,741	$	1,994	$	100,333	$	102,327
	The Company classifies its cash equivalents and marketable securities as Level 1 or Level 2 within the fair value hierarchy. The fair value of Level 1 financial instruments, which are traded in active markets, is based on quoted market prices for identical instruments. The fair value of Level 2 financial instruments is obtained from an independent pricing service, which may use quoted market prices for identical or comparable instruments or model driven valuations using observable market data or inputs corroborated by observable market data. The Company's procedures include controls to ensure that appropriate fair values are recorded, including comparing the fair values obtained from the Company's pricing service against fair values obtained from other independent sources. At March 31, 2015 and December 31, 2014, the Company had no financial assets or liabilities that were classified as Level 3, which are valued based on inputs supported by little or no market activity.
	During the three months ended March 31, 2015, the Company had no transfers of financial assets between levels. At March 31, 2015, $126.5 million of the Company's marketable securities had a contractual maturity of one year or less and $42.2 million had a contractual maturity of one to two years.

Stockbased_compensation

Stock-based compensation	3 Months Ended
	Mar. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock-based compensation	Stock-based compensation
	Equity incentive plans
	The Company has issued equity grants from its three stock-based employee compensation plans: the 2014 Equity Incentive Plan (2014 Plan), the 2010 Equity Incentive Plan (2010 Plan), and the Employee Stock Purchase Plan (ESPP).
	The 2014 Plan serves as the successor to the 2010 Plan and provides for the granting of incentive and nonqualified stock options, restricted stock awards (RSAs), restricted stock units (RSUs), stock appreciation rights, stock bonus awards, and performance awards to employees, non-employee directors, and consultants. No shares have been issued under the 2010 Plan since June 2014. Options granted under the 2014 Plan generally expire within 10 years from the date of grant and generally vest over four years. Options with performance or market-based conditions are generally subject to a required service period along with the performance or market condition. RSUs granted under the 2014 Plan generally vest either annually or quarterly over three or four years based upon on continued service. The ESPP allows eligible employees to purchase shares of the Company's Class A common stock through payroll deductions at a price equal to 85% of the lower of the fair market values of the stock as of the beginning or the end of six-month offering periods. For additional information regarding the Company's equity incentive plans, please refer to the footnotes to the audited financial statements contained in its Annual Report on Form 10-K for the year ended December 31, 2014.
	Stock option activity
	A summary of the Company’s stock option activity and related information is as follows:
			Options outstanding
	(shares in thousands)		Shares			Weighted-				Weighted-		Total intrinsic		Aggregate
						average				average		value of		intrinsic value
						exercise				grant		exercises		(in thousands)
						price				date fair		(in thousands)
										value
	Outstanding at December 31, 2014:		25,134			$	6.62							$	1,425,339
	Granted		420			45.56				$	22.47
	Exercised		(4,143	)		1.44						$	203,784
	Forfeited/Cancelled		(74	)		20.91
	Outstanding at March 31, 2015:		21,337			$	8.34							$	756,135
	Exercisable at March 31, 2015		14,678			$	2.68							$	597,831
	Vested and expected to vest at March 31, 2015		20,966			$	8.08							$	748,068
	At March 31, 2015, there was $66.3 million of unearned stock-based compensation expense related to unvested options, which is expected to be amortized over a weighted average period of 2.6 years.
	Restricted stock awards
	RSAs represent share awards of the Company’s common stock that are generally subject to repurchase at the original issuance price upon termination of services prior to vesting. These repurchase terms are considered to be a forfeiture provision and do not result in mark-to-market accounting each reporting period. At March 31, 2015, all RSAs were fully vested. A summary of the Company’s restricted stock awards is as follows:
	(shares in thousands)	Shares			Weighted- average grant date fair value				Aggregate
									intrinsic value
									(in thousands)
	Non-vested shares at December 31, 2014	17			$	6.3			$	1,017
	Vested	(17	)
	Non-vested shares at March 31, 2015	—			$	—			$	—
	Restricted stock units
	The cost of RSUs is determined using the fair value of the Company's common stock on the date of grant, and compensation is recognized on a straight-line basis over the requisite service period. The Company also has issued RSUs with both a market condition and service condition. The Company estimated the fair value of these market-based RSUs using a Monte Carlo valuation model on the date of grant. A summary of the Company’s RSU activity is as follows:
	(shares in thousands)	Shares			Weighted- average grant date fair value
	Non-vested shares at December 31, 2014	4,307			$	21.98
	Granted	332			46.42
	Vested	(817	)		15.8
	Forfeited	(8	)		79.22
	Non-vested shares at March 31, 2015	3,814			25.3
	In June 2014, the Company granted a 4.5 million RSU award to the Chief Executive Officer (CEO RSUs), which included 1.5 million RSUs that vested immediately upon grant and 3.0 million RSUs that were subject to a market-based condition and a service condition. In January 2015, the market-based condition was achieved and the Company recorded stock-based compensation expense of $15.8 million during the three months ended March 31, 2015.  At March 31, 2015, $20.6 million of total unearned compensation costs related to the CEO RSUs is expected to be recognized over the remaining vesting period of 2.3 years.
	At March 31, 2015, there was $70.3 million of unearned stock-based compensation related to RSUs (including the CEO RSUs), which is expected to be amortized over a weighted average period of 2.3 years.
	Employee stock purchase plan
	On February 13, 2015, the first purchase under the Company's ESPP was made and employees purchased an aggregate of 313,233 shares at a price of $20.40 per share. During the three months ended March 31, 2015, the Company recorded $1.1 million of stock-based compensation expense related to the ESPP. At March 31, 2015, there was $1.5 million of unearned stock-based compensation related to the Company’s ESPP, which is expected to be recognized over 0.4 years.
	Stock-based compensation expense
	The Company measures compensation expense for all stock-based payment awards, including stock options, RSUs, and purchases under the Company's ESPP, based on the estimated fair values on the date of the grant. The fair value of stock options granted and purchases under the Company's ESPP is estimated using the Black-Scholes option pricing model. There have been no significant changes in the Company’s valuation assumptions for measuring compensation expense from those disclosed in the footnotes to the audited financial statements contained in its Annual Report on Form 10-K for the year ended December 31, 2014.
	The following tables set forth the detailed allocation of stock-based compensation expense:
		Three months ended
	(in thousands)	March 31,				March 31,
		2015				2014
	Stock-based compensation expense:
	Cost of revenue	$	283			$	168
	Research and development	3,535				1,401
	Sales and marketing	3,066				1,414
	General and administrative	19,617				1,054
	Total stock-based compensation expense	26,501				4,037
	Total tax benefit recognized	(9,304		)		(342		)
	Decrease in net income	$	17,197			$	3,695
	Stock-based compensation expense by type of award:
	Stock options	$	5,957			$	2,894
	RSUs	18,920				179
	RSAs	566				964
	ESPP	1,058				—
	Total stock-based compensation expense	$	26,501			$	4,037

Net_income_per_share_attributa

Net income per share attributable to common stockholders	3 Months Ended
	Mar. 31, 2015
Earnings Per Share [Abstract]
Net income per share attributable to common stockholders	Net income per share attributable to common stockholders
	Basic and diluted net income per common share is presented in conformity with the two-class method required for participating securities. The Company considers shares issued upon the early exercise of options subject to repurchase and non-vested restricted shares to be participating securities, because holders of such shares have a non-forfeitable right to dividends. Additionally, prior to the date of the Company's initial public offering (IPO) in June 2014, the Company considered its redeemable convertible preferred stock to be participating securities due to their non-cumulative dividend rights. Immediately after the completion of the Company's IPO, all outstanding shares of redeemable convertible preferred stock converted to Class B common stock.
	The rights of the holders of Class A and Class B common stock are identical, except with respect to voting and conversion. Each share of Class A common stock is entitled to one vote per share and each share of Class B common stock is entitled to ten votes per share. Each share of Class B common stock is convertible at any time at the option of the stockholder into one share of Class A common stock and has no expiration date. Each share of Class B common stock will convert automatically into one share of Class A common stock upon the date when the outstanding shares of Class B common stock represent less than 10% of the aggregate number of shares of common stock then outstanding. Class A common stock is not convertible into Class B common stock.
	Basic net income per share attributable to common stockholders is computed by dividing the net income attributable to common stockholders by the weighted-average number of common shares outstanding during the period. All participating securities are excluded from basic weighted average common shares outstanding. Diluted net income per share attributable to common stockholders is computed by dividing the net income attributable to common stockholders by the weighted-average number of common shares outstanding, including all potentially dilutive common shares.
	Undistributed earnings are allocated based on the contractual participation rights of common shares as if the earnings for the year have been distributed. As the liquidation and dividend rights are identical, the undistributed earnings are allocated on a proportionate basis. The computation of the diluted net income per share of Class A common stock assumes the conversion of Class B common stock.
	The following table presents the calculations of basic and diluted net income per share attributable to common stockholders:
		Three months ended
	(dollars in thousands, except per share data)	March 31,					March 31,
		2015					2014
		Class A			Class B		Common
	Numerator:
	Allocation of net income	$	8,926		$	7,826	$	11,049
	Less: net income allocable to participating securities	—			—		(3,040		)
	Net income attributable to common stockholders—basic	$	8,926		$	7,826	$	8,009
	Add: net income allocable to dilutive participating securities	—			—		443
	Reallocation of net income as a result of conversion of Class B to Class A shares	7,826			—		—
	Reallocation of net income to Class B shares	—			968		—
	Net income attributable to common stockholders—diluted	$	16,752		$	8,794	$	8,452
	Denominator:
	Weighted-average common shares—basic	70,483			61,795		81,582
	Conversion of Class B to Class A common stock outstanding	61,795			—		—
	Effect of potentially dilutive stock options, ESPP shares, and RSUs	16,295			16,202		19,201
	Weighted-average common shares—diluted	148,573			77,997		100,783
	Net income per share attributable to common stockholders:
	Basic	$	0.13		$	0.13	$	0.1
	Diluted	$	0.11		$	0.11	$	0.08
	The following potentially dilutive shares of were not included in the calculation of diluted shares outstanding as the effect would have been anti-dilutive:
		Three months ended
	(in thousands)	March 31,		March 31,
		2015		2014
	Series A redeemable convertible preferred stock	—		30,523
	Stock options, ESPP shares, and RSUs	1,984		3,634
	Unvested stock awards and stock options	5		451
		1,989		34,608

Income_tax_expense

Income tax expense	3 Months Ended
	Mar. 31, 2015
Income Tax Disclosure [Abstract]
Income tax expense	Income tax expense
	The Company's tax provision for interim periods is determined using an estimate of its annual effective tax rate, adjusted for discrete items arising in that quarter. In each quarter, the Company updates its estimate of the annual effective tax rate, and if the estimated annual tax rate changes, the Company makes a cumulative adjustment in that quarter.
		Three months ended
	(dollars in thousands)	March 31,			March 31,
		2015			2014
	Income tax expense	$	3,272		$	3,882
	Effective tax rate	16.3		%	26		%
	The Company’s income tax expense was $3.3 million and $3.9 million for the three months ended March 31, 2015 and 2014, respectively. The Company’s provision for income taxes in each period has differed from the tax computed at the U.S. federal statutory income tax rate due to state taxes, the effect of non-U.S. operations, deductible and non-deductible stock-based compensation expense, non-deductible acquisition-related costs and adjustments to unrecognized tax benefits. The lower income tax expense for the three months ended March 31, 2015, compared to the same period in 2014, was primarily due to the effects of higher deductible stock-based compensation.
	The Company is currently under examination by the U.S. Internal Revenue Service for tax years 2012 and 2013. The U.S. federal and U.S. state taxing authorities may choose to audit tax returns for tax years beyond the statute of limitation period due to significant tax attribute carryforwards from prior years, making adjustments only to carryforward attributes. The Company is also currently under examination by the California Franchise Tax Board for tax years 2011 and 2012. At this time, the Company is not able to estimate the potential impact that these examinations may have on income tax expense. If the examinations are resolved unfavorably, they may have a material negative impact on the Company's results of operations.
	At March 31, 2015 and December 31, 2014, the Company’s total amount of gross unrecognized tax benefits was $16.9 million and $16.6 million, respectively. If recognized, $16.9 million of the unrecognized tax benefits (net of federal benefit) at March 31, 2015 would be recorded as a reduction of the income tax provision in future periods. Management believes events that could occur in the next 12 months and cause a material change in unrecognized tax benefits include, but are not limited to, the completion of examinations by the U.S. or foreign taxing authorities, and the expiration of statute of limitations on the Company's tax returns. The calculation of unrecognized tax benefits involves dealing with uncertainties in the application of complex global tax regulations. Management regularly assesses the Company's tax positions in light of legislative, bilateral tax treaty, regulatory and judicial developments in the countries in which it does business. It is reasonably possible that the total amounts of unrecognized tax benefits will significantly increase within the next 12 months. However, the range of the reasonably possible change cannot be reliably estimated.

Related_parties

Related parties	3 Months Ended
	Mar. 31, 2015
Related Party Transactions [Abstract]
Related parties	Related parties
	The Company has agreements for certain contract manufacturing and engineering services with a vendor affiliated with one of the Company's investors. In the three months ended March 31, 2015 and 2014, the Company made payments of $0.5 million and $8.4 million, respectively, for services rendered.
	The Company incurs costs for company-related chartered aircraft fees for the use of the CEO’s private plane. In the three months ended March 31, 2015 and 2014, the Company made payments of $0.4 million and zero, respectively.
	In 2013, the Company entered into a three-year agreement with a company affiliated with the son of one of the members of the Company's Board of Directors to acquire certain naming rights to a sprint kart race track. As consideration for these naming rights, the Company would pay a total of $0.5 million in installments beginning in October 2013 over the naming rights period. In addition, the Company would also provide 100 GoPro capture devices at no cost each year over the term of the agreement. As of March 31, 2015, the Company has made cumulative payments related to this agreement of $0.3 million.
	In the second quarter of 2013, the Company loaned one of its executive officers $150,000 pursuant to a demand payment loan that did not bear interest, which was fully repaid in March 2014.

Commitments_contingencies_and_

Commitments, contingencies and guarantees	3 Months Ended
	Mar. 31, 2015
Commitments and Contingencies Disclosure [Abstract]
Commitments, contingencies and guarantees	Commitments, contingencies and guarantees
	The following table summarizes the Company’s contractual commitments as of March 31, 2015:
	(in thousands)	Total			1 year (remaining			2-3 years (2016 and 2017)		4-5 years (2018 and 2019)		More than
					9 months in 2015)							5 years (beyond 2019)
	Operating leases(1)	$	44,004		$	7,870		$	21,927	$	14,207	$	—
	Sponsorship commitments(2)	11,314			4,912			6,402		—		—
	Other contractual commitments(3)	7,697			2,673			5,024		—		—
	Capital equipment purchase commitments(4)	16,107			16,107			—		—		—
	Total contractual cash obligations	$	79,122		$	31,562		$	33,353	$	14,207	$	—
	-1	The Company leases its facilities under long-term operating leases, which expire at various dates through 2019.
	-2	The Company sponsors sporting events, resorts and athletes as part of its marketing efforts. In many cases, the Company enters into multi-year agreements with event organizers, resorts and athletes.
	-3	The Company purchases software licenses and engages outside consultants to assist with upgrading or implementing its financial and IT systems, which require payments over multiple years.
	-4	The Company enters into contracts to acquire equipment for tooling and molds as part of its manufacturing operations. In addition, the Company incurs purchase commitments related to the manufacturing of its point-of-purchase (POP) displays by third parties.
	Rent expense was $2.4 million and $1.3 million for the three months ended March 31, 2015 and 2014, respectively.
	Legal proceedings
	From time to time, the Company is involved in legal proceedings in the ordinary course of business. The Company believes that the outcome of any existing litigation, either individually or in the aggregate, will not have a material impact on the results of operations, financial condition or cash flows of the Company.
	Indemnifications
	In the normal course of business, the Company enters into agreements that contain a variety of representations and warranties and provide for general indemnification. The Company’s exposure under these agreements is unknown because it involves claims that may be made against the Company in the future, but have not yet been made. As of March 31, 2015, the Company has not paid any claims or been required to defend any action related to its indemnification obligations. However, the Company may record charges in the future as a result of these indemnification obligations.
	Product warranty
	The following table summarizes the warranty liability activity:
		Three months ended
	(in thousands)	March 31,			March 31,
		2015			2014
	Beginning balances	$	6,405		$	3,870
	Charged to cost of revenue	6,044			271
	Settlements of warranty claims	(3,480		)	(1,590		)
	Ending balances	$	8,969		$	2,551
	At March 31, 2015, $8.5 million of the warranty liability was recorded as an element of accrued liabilities and $0.4 million was recorded as an element of other long-term liabilities.

Concentrations_of_risk_and_seg

Concentrations of risk and segment information	3 Months Ended
	Mar. 31, 2015
Risks and Uncertainties [Abstract]
Concentrations of risk and segment information	Concentrations of risk and segment information
	Segment information
	The Company operates as one operating segment as it only reports financial information on an aggregate and consolidated basis to its CEO, who is the Company’s chief operating decision maker.
	Customer concentration
	Financial instruments, which potentially subject the Company to concentrations of credit risk, consist principally of trade receivables. The Company believes that credit risk in its accounts receivable is mitigated by the Company’s credit evaluation process, relatively short collection terms and dispersion of its customer base. The Company generally does not require collateral and losses on trade receivables have historically been within management’s expectations.
	The Company had the following customers who represented 10% or more of its net accounts receivable balance:
		March 31,		December 31,
		2015		2014
	A (retailer)	16%		17%
	B (distributor)	26%		14%
	C (retailer)	10%		11%
	D (retailer)	12%		*
	E (distributor)	11%		*
	* Less than 10% of total accounts receivable for the period indicated
	In the three months ended March 31, 2015 and 2014, the Company sold accounts receivables, without recourse, of $35.3 million and $31.3 million, respectively, to a third-party banking institution. Factoring fees of $0.3 million for each of these periods were included in other expense, net.
	Customers with revenue equal to or greater than 10% of total revenue were as follows:
		Three months ended
		March 31,		March 31,
		2015		2014
	A (retailer)	12%		13%
	B (distributor)	*		10%
	*	Less than 10% of total revenue for the period indicated
	Supplier concentration
	The Company relies on third parties for the supply and manufacture of its capture devices, some of which are sole-source suppliers.  The Company believes that outsourcing manufacturing enables greater scale and flexibility. As demand and product lines change, the Company periodically evaluates the need and advisability of adding manufacturers to support its operations.  In instances where a supply and manufacture agreement does not exist or suppliers fail to perform their obligations, the Company may be unable to find alternative suppliers or satisfactorily deliver its products to its customers on time, if at all.  The Company also relies on third parties with whom it outsources supply chain activities related to inventory warehousing, order fulfillment, distribution and other direct sales logistics.
	Geographic and other information
	Revenue by geographic region, based on ship-to destinations, was as follows:
		Three months ended
	(in thousands)	March 31,			March 31,
		2015			2014
	Americas	$	180,093		$	125,166
	Europe, Middle East and Africa (EMEA)	139,079			84,174
	Asia and Pacific area countries (APAC)	43,937			26,376
		$	363,109		$	235,716
	Revenue in the United States, which is included in the Americas geographic region, was $155.3 million and $110.7 million for the three months ended March 31, 2015 and 2014, respectively. During the three months ended December 31, 2014, the Company reclassified four countries it had previously included in the APAC geographical region to now be included in the EMEA geographical region. This caused $4.1 million of revenue to be reclassified from the APAC region to the EMEA region for the three months ended March 31, 2014. The Company does not disclose revenue by product category as it does not track sales incentives and other revenue adjustments by product category to report such data.
	As of March 31, 2015 and December 31, 2014, long-lived assets, which represent gross property and equipment, located outside the United States, primarily China, were $28.8 million and $25.4 million, respectively.

Basis_of_presentation_and_summ1

Basis of presentation and summary of significant accounting policies (Policies)	3 Months Ended
	Mar. 31, 2015
Accounting Policies [Abstract]
Basis of accounting	The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with U.S. generally accepted accounting principles (GAAP) and in accordance with the interim period reporting requirements of Form 10-Q. The unaudited condensed consolidated financial statements reflect all adjustments (consisting only of normal recurring adjustments) that management believes are necessary for the fair presentation of the Company's financial condition, results of operations, and cash flows for the periods presented, but are not necessarily indicative of the results expected for the full fiscal year or any other future period. The condensed consolidated balance sheet at December 31, 2014 has been derived from the audited financial statements at that date, but does not include all of the disclosures required by GAAP.  This quarterly report should be read in conjunction with the Company's Annual Report on Form 10-K (Annual Report) for the year ended December 31, 2014. There have been no significant changes in the Company’s accounting policies from those disclosed in the footnotes to the audited financial statements contained in its Annual Report on Form 10-K for the year ended December 31, 2014.
Principles of consolidation	Principles of consolidation
	These consolidated financial statements include all the accounts of the Company and its wholly-owned subsidiaries. Unless otherwise specified, references to the Company are references to GoPro, Inc. and its consolidated subsidiaries. All intercompany balances and transactions have been eliminated in consolidation.
Use of estimates	Use of estimates
	The preparation of financial statements in accordance with GAAP requires management to make estimates and assumptions that affect the amounts reported and disclosed in the Company’s condensed consolidated financial statements and accompanying notes. The Company regularly evaluates estimates and assumptions in several areas, including those related to: the collectability of accounts receivable, stock-based compensation, inventory valuation, warranty liabilities, revenue recognition and related estimates (including sales returns, web-based sale deliveries at period-end, implied post contract support, and marketing allowances), the valuation and useful lives of intangible assets and property and equipment, the valuation of deferred income tax assets, and uncertain tax positions. The Company bases its estimates and assumptions on historical experience and on various other factors that it believes to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. Actual results could differ materially from management's estimates. To the extent there are material differences between the estimates and the actual results, future results of operations will be affected.
Comprehensive income	Comprehensive income
	For all periods presented, comprehensive income equaled net income. Therefore, the condensed consolidated statements of comprehensive income have been omitted from the condensed consolidated financial statements.
Recent accounting pronouncements	Recent accounting pronouncements
	In May 2014, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update No. 2014-09 (ASU 2014-09), Revenue from Contracts with Customers, which amends the existing accounting standards for revenue recognition. ASU 2014-09 is based on principles that govern the recognition of revenue at an amount to which an entity expects to be entitled when products are transferred to customers. ASU 2014-09 becomes effective for the Company on January 1, 2017. Early application is not permitted. In April 2015, the FASB proposed a one-year deferral of the effective date of the new revenue standard. If approved, the new standard will become effective for the Company on January 1, 2018 and can be adopted either retrospectively to each prior reporting period presented or as a cumulative effect adjustment as of the date of adoption. The Company is currently evaluating the impact the adoption of ASU 2014-09 will have on the Company's consolidated financial statements.
Correction of error	Correction of error
	During the preparation of the condensed consolidated financial statements for the period ended June 30, 2014, the Company determined that within the consolidated statement of cash flows previously disclosed for the quarter ended March 31, 2014, net cash provided by operating activities was understated by $3.2 million and net cash used for investing activities was understated by the same amount. The Company has properly presented its condensed consolidated statement of cash flows for the three months ended March 31, 2014 and determined that this revision is not material to prior periods.
Prior period reclassifications	Prior Period Reclassifications
	Reclassifications of certain prior period amounts in the condensed consolidated financial statements have been made to conform to the current period presentation.

Balance_sheet_components_Table

Balance sheet components (Tables)	3 Months Ended
	Mar. 31, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Schedule of Inventory	Inventory consisted of the following:
	(in thousands)	March 31,				December 31,
		2015				2014
	Components	$	3,301			$	4,324
	Finished goods	160,743				148,702
	Total inventory	$	164,044			$	153,026
Property, Plant and Equipment	Property and equipment, net consisted of the following:
	(in thousands)	Useful life		March 31,				December 31,
		(in years)		2015				2014
	Leasehold improvements	3–7		$	23,037			$	22,787
	Computers, software, equipment and furniture	2–4		27,420				24,636
	Tooling	1–4		17,639				16,159
	Construction in progress			6,037				3,944
	Tradeshow equipment and other	5-Feb		3,864				3,830
	Gross property and equipment			77,997				71,356
	Less: Accumulated depreciation and amortization			-34,107				-29,800
	Property and equipment, net			$	43,890			$	41,556

Fair_value_measurements_Tables

Fair value measurements (Tables)	3 Months Ended
	Mar. 31, 2015
Fair Value Disclosures [Abstract]
Fair Value, Assets Measured on Recurring Basis	The Company’s assets that are measured at fair value on a recurring basis, by level, within the fair value hierarchy are summarized as follows:
		31-Mar-15						31-Dec-14
	(in thousands)	Level 1		Level 2		Total		Level 1		Level 2		Total
	Cash equivalents:
	Money market funds	$	16,618	$	—	$	16,618	$	80,968	$	—	$	80,968
	Corporate debt securities	—		—		—		—		2,000		2,000
	Total cash equivalents	$	16,618	$	—	$	16,618	$	80,968	$	2,000	$	82,968
	Marketable securities:
	U.S. treasury securities	$	2,498	$	—	$	2,498	$	1,994	$	—	$	1,994
	U.S. agency securities	—		15,287		15,287		—		7,020		7,020
	Commercial paper	—		3,697		3,697		—		2,497		2,497
	Corporate debt securities	—		147,259		147,259		—		90,816		90,816
	Total marketable securities	$	2,498	$	166,243	$	168,741	$	1,994	$	100,333	$	102,327

Stockbased_compensation_Tables

Stock-based compensation (Tables)	3 Months Ended
	Mar. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Schedule of Share-based Compensation, Stock Options, Activity	A summary of the Company’s stock option activity and related information is as follows:
			Options outstanding
	(shares in thousands)		Shares			Weighted-				Weighted-		Total intrinsic		Aggregate
						average				average		value of		intrinsic value
						exercise				grant		exercises		(in thousands)
						price				date fair		(in thousands)
										value
	Outstanding at December 31, 2014:		25,134			$	6.62							$	1,425,339
	Granted		420			45.56				$	22.47
	Exercised		(4,143	)		1.44						$	203,784
	Forfeited/Cancelled		(74	)		20.91
	Outstanding at March 31, 2015:		21,337			$	8.34							$	756,135
	Exercisable at March 31, 2015		14,678			$	2.68							$	597,831
	Vested and expected to vest at March 31, 2015		20,966			$	8.08							$	748,068
Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity	A summary of the Company’s RSU activity is as follows:
	(shares in thousands)	Shares			Weighted- average grant date fair value
	Non-vested shares at December 31, 2014	4,307			$	21.98
	Granted	332			46.42
	Vested	(817	)		15.8
	Forfeited	(8	)		79.22
	Non-vested shares at March 31, 2015	3,814			25.3
	A summary of the Company’s restricted stock awards is as follows:
	(shares in thousands)	Shares			Weighted- average grant date fair value				Aggregate
									intrinsic value
									(in thousands)
	Non-vested shares at December 31, 2014	17			$	6.3			$	1,017
	Vested	(17	)
	Non-vested shares at March 31, 2015	—			$	—			$	—
Allocation of Stock-based Compensation Expense	The following tables set forth the detailed allocation of stock-based compensation expense:
		Three months ended
	(in thousands)	March 31,				March 31,
		2015				2014
	Stock-based compensation expense:
	Cost of revenue	$	283			$	168
	Research and development	3,535				1,401
	Sales and marketing	3,066				1,414
	General and administrative	19,617				1,054
	Total stock-based compensation expense	26,501				4,037
	Total tax benefit recognized	(9,304		)		(342		)
	Decrease in net income	$	17,197			$	3,695
	Stock-based compensation expense by type of award:
	Stock options	$	5,957			$	2,894
	RSUs	18,920				179
	RSAs	566				964
	ESPP	1,058				—
	Total stock-based compensation expense	$	26,501			$	4,037

Net_income_per_share_attributa1

Net income per share attributable to common stockholders (Tables)	3 Months Ended
	Mar. 31, 2015
Earnings Per Share [Abstract]
Schedule of Net Income per Share, Basic and Diluted	The following table presents the calculations of basic and diluted net income per share attributable to common stockholders:
		Three months ended
	(dollars in thousands, except per share data)	March 31,					March 31,
		2015					2014
		Class A			Class B		Common
	Numerator:
	Allocation of net income	$	8,926		$	7,826	$	11,049
	Less: net income allocable to participating securities	—			—		(3,040		)
	Net income attributable to common stockholders—basic	$	8,926		$	7,826	$	8,009
	Add: net income allocable to dilutive participating securities	—			—		443
	Reallocation of net income as a result of conversion of Class B to Class A shares	7,826			—		—
	Reallocation of net income to Class B shares	—			968		—
	Net income attributable to common stockholders—diluted	$	16,752		$	8,794	$	8,452
	Denominator:
	Weighted-average common shares—basic	70,483			61,795		81,582
	Conversion of Class B to Class A common stock outstanding	61,795			—		—
	Effect of potentially dilutive stock options, ESPP shares, and RSUs	16,295			16,202		19,201
	Weighted-average common shares—diluted	148,573			77,997		100,783
	Net income per share attributable to common stockholders:
	Basic	$	0.13		$	0.13	$	0.1
	Diluted	$	0.11		$	0.11	$	0.08
Schedule of Antidilutive Securities Excluded from Computation of Net Income per Share	The following potentially dilutive shares of were not included in the calculation of diluted shares outstanding as the effect would have been anti-dilutive:
		Three months ended
	(in thousands)	March 31,		March 31,
		2015		2014
	Series A redeemable convertible preferred stock	—		30,523
	Stock options, ESPP shares, and RSUs	1,984		3,634
	Unvested stock awards and stock options	5		451
		1,989		34,608

Income_tax_expense_Tables

Income tax expense (Tables)	3 Months Ended
	Mar. 31, 2015
Income Tax Disclosure [Abstract]
Schedule of Components of Income Tax Expense (Benefit)
		Three months ended
	(dollars in thousands)	March 31,			March 31,
		2015			2014
	Income tax expense	$	3,272		$	3,882
	Effective tax rate	16.3		%	26		%

Commitments_contingencies_and_1

Commitments, contingencies and guarantees (Tables)	3 Months Ended
	Mar. 31, 2015
Commitments and Contingencies Disclosure [Abstract]
Schedule of the Company's Contractual Commitments	The following table summarizes the Company’s contractual commitments as of March 31, 2015:
	(in thousands)	Total			1 year (remaining			2-3 years (2016 and 2017)		4-5 years (2018 and 2019)		More than
					9 months in 2015)							5 years (beyond 2019)
	Operating leases(1)	$	44,004		$	7,870		$	21,927	$	14,207	$	—
	Sponsorship commitments(2)	11,314			4,912			6,402		—		—
	Other contractual commitments(3)	7,697			2,673			5,024		—		—
	Capital equipment purchase commitments(4)	16,107			16,107			—		—		—
	Total contractual cash obligations	$	79,122		$	31,562		$	33,353	$	14,207	$	—
	-1	The Company leases its facilities under long-term operating leases, which expire at various dates through 2019.
	-2	The Company sponsors sporting events, resorts and athletes as part of its marketing efforts. In many cases, the Company enters into multi-year agreements with event organizers, resorts and athletes.
	-3	The Company purchases software licenses and engages outside consultants to assist with upgrading or implementing its financial and IT systems, which require payments over multiple years.
	-4	The Company enters into contracts to acquire equipment for tooling and molds as part of its manufacturing operations. In addition, the Company incurs purchase commitments related to the manufacturing of its point-of-purchase (POP) displays by third parties.
Schedule of Product Warranty Liability Activity	The following table summarizes the warranty liability activity:
		Three months ended
	(in thousands)	March 31,			March 31,
		2015			2014
	Beginning balances	$	6,405		$	3,870
	Charged to cost of revenue	6,044			271
	Settlements of warranty claims	(3,480		)	(1,590		)
	Ending balances	$	8,969		$	2,551

Concentrations_of_risk_and_seg1

Concentrations of risk and segment information (Tables)	3 Months Ended
	Mar. 31, 2015
Concentration Risk [Line Items]
Schedule of Revenue by Geographic Region	Revenue by geographic region, based on ship-to destinations, was as follows:
		Three months ended
	(in thousands)	March 31,			March 31,
		2015			2014
	Americas	$	180,093		$	125,166
	Europe, Middle East and Africa (EMEA)	139,079			84,174
	Asia and Pacific area countries (APAC)	43,937			26,376
		$	363,109		$	235,716
Accounts Receivable [Member]
Concentration Risk [Line Items]
Schedules of Customer Concentration by Risk Factor	The Company had the following customers who represented 10% or more of its net accounts receivable balance:
		March 31,		December 31,
		2015		2014
	A (retailer)	16%		17%
	B (distributor)	26%		14%
	C (retailer)	10%		11%
	D (retailer)	12%		*
	E (distributor)	11%		*
	* Less than 10% of total accounts receivable for the period indicated
Sales Revenue [Member]
Concentration Risk [Line Items]
Schedules of Customer Concentration by Risk Factor	Customers with revenue equal to or greater than 10% of total revenue were as follows:
		Three months ended
		March 31,		March 31,
		2015		2014
	A (retailer)	12%		13%
	B (distributor)	*		10%
	*	Less than 10% of total revenue for the period indicated

Basis_of_presentation_and_summ2

Basis of presentation and summary of significant accounting policies (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Understatement in net cash provided by operating activities	($66,267)	($20,914)
Understatement in net cash used for investing activities	77,172	7,901
Scenario, Adjustment [Member]
Understatement in net cash provided by operating activities		3,200
Understatement in net cash used for investing activities		$3,200

Balance_sheet_components_Inven

Balance sheet components - Inventory (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Components	$3,301	$4,324
Finished goods	160,743	148,702
Total inventory	$164,044	$153,026

Balance_sheet_components_Prope

Balance sheet components - Property and Equipment, Net (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Property, Plant and Equipment [Line Items]
Gross property and equipment	77,997	$71,356
Less: Accumulated depreciation and amortization	-34,107	-29,800
Property and equipment, net	43,890	41,556
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Gross property and equipment	23,037	22,787
Computers, Software, Equipment and Furniture [Member]
Property, Plant and Equipment [Line Items]
Gross property and equipment	27,420	24,636
Tooling [Member]
Property, Plant and Equipment [Line Items]
Gross property and equipment	17,639	16,159
Construction in Progress [Member]
Property, Plant and Equipment [Line Items]
Gross property and equipment	6,037	3,944
Tradeshow Equipment and Other [Member]
Property, Plant and Equipment [Line Items]
Gross property and equipment	3,864	$3,830
Minimum [Member] | Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Useful life (in years)	3 years
Minimum [Member] | Computers, Software, Equipment and Furniture [Member]
Property, Plant and Equipment [Line Items]
Useful life (in years)	2 years
Minimum [Member] | Tooling [Member]
Property, Plant and Equipment [Line Items]
Useful life (in years)	1 year
Minimum [Member] | Tradeshow Equipment and Other [Member]
Property, Plant and Equipment [Line Items]
Useful life (in years)	2 years
Maximum [Member] | Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Useful life (in years)	7 years
Maximum [Member] | Computers, Software, Equipment and Furniture [Member]
Property, Plant and Equipment [Line Items]
Useful life (in years)	4 years
Maximum [Member] | Tooling [Member]
Property, Plant and Equipment [Line Items]
Useful life (in years)	4 years
Maximum [Member] | Tradeshow Equipment and Other [Member]
Property, Plant and Equipment [Line Items]
Useful life (in years)	5 years

Balance_sheet_components_Acqui

Balance sheet components - Acquired Intangible Assets and Goodwill (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Goodwill and Intangible Assets Disclosure [Abstract]
Intangible assets and goodwill	$24,874	$17,032

Fair_value_measurements_Detail

Fair value measurements (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	$168,741,000	$102,327,000
Marketable securities with contractual maturity of one year or less	126,500,000
Marketable securities with contractual maturity of one to two years	42,200,000
Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	16,618,000	82,968,000
Marketable securities	168,741,000	102,327,000
Fair Value, Measurements, Recurring [Member] | US Treasury Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	2,498,000	1,994,000
Fair Value, Measurements, Recurring [Member] | US Agency Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	15,287,000	7,020,000
Fair Value, Measurements, Recurring [Member] | Commercial Paper [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	3,697,000	2,497,000
Fair Value, Measurements, Recurring [Member] | Corporate Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	147,259,000	90,816,000
Fair Value, Measurements, Recurring [Member] | Money Market Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	16,618,000	80,968,000
Fair Value, Measurements, Recurring [Member] | Corporate Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	0	2,000,000
Fair Value, Measurements, Recurring [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	16,618,000	80,968,000
Marketable securities	2,498,000	1,994,000
Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | US Treasury Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	2,498,000	1,994,000
Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | US Agency Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	0	0
Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | Commercial Paper [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	0	0
Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | Corporate Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	0	0
Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | Money Market Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	16,618,000	80,968,000
Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | Corporate Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	0	0
Fair Value, Measurements, Recurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	0	2,000,000
Marketable securities	166,243,000	100,333,000
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | US Treasury Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	0	0
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | US Agency Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	15,287,000	7,020,000
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | Commercial Paper [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	3,697,000	2,497,000
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | Corporate Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	147,259,000	90,816,000
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | Money Market Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	0	0
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | Corporate Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	$0	$2,000,000

Stockbased_compensation_Narrat

Stock-based compensation - Narrative (Details) (USD $)	0 Months Ended	3 Months Ended		1 Months Ended	10 Months Ended
	Feb. 13, 2015	Mar. 31, 2015	Mar. 31, 2014	Jun. 30, 2014	Mar. 31, 2015
		plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of stock-based employee compensation plans		3
Aggregate shares purchased by employees	313,233
Purchase price of shares purchased (in dollars per share)	$20.40
Stock-based compensation		$26,501,000	$4,037,000
ESPP [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Purchase price of common stock as percentage of fair value of Company common stock (percent)		85.00%
Unearned stock-based compensation costs		1,500,000			1,500,000
Unearned stock-based compensation, expected recognition period		4 months 13 days
Stock-based compensation		1,058,000	0
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unearned stock-based compensation costs		66,300,000			66,300,000
Unearned stock-based compensation, expected recognition period		2 years 7 months 6 days
Stock-based compensation		5,957,000	2,894,000
RSUs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unearned stock-based compensation costs		70,300,000			70,300,000
Unearned stock-based compensation, expected recognition period		2 years 3 months 18 days
Shares granted		332,000
Stock-based compensation		18,920,000	179,000
RSUs [Member] | Chief Executive Officer (CEO) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unearned stock-based compensation costs		20,600,000			20,600,000
Unearned stock-based compensation, expected recognition period		2 years 3 months
Shares granted				4,500,000
RSUs [Member] | Chief Executive Officer (CEO) [Member] | Vested Immediately [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted				1,500,000
RSUs [Member] | Chief Executive Officer (CEO) [Member] | Subject to Market-based and Service Condition [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted				3,000,000
Stock-based compensation expense		$15,800,000
2010 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares issued					0
2010 Plan [Member] | Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expiration period		10 years
Vesting period		4 years
2014 Plan [Member] | RSUs [Member] | Vested Immediately [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period		3 years
2014 Plan [Member] | RSUs [Member] | Subject to Market-based and Service Condition [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period		4 years

Stockbased_compensation_Stock_

Stock-based compensation - Stock Option Activity (Details) (USD $)	3 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Shares
Outstanding at beginning of period (shares)	25,134
Granted (shares)	420
Exercised (shares)	-4,143
Forfeited/Cancelled (shares)	-74
Outstanding at end of period (shares)	21,337
Weighted- average exercise price
Outstanding at beginning of period (in dollars per share)	$6.62
Granted (in dollars per share)	$45.56
Exercised (in dollars per share)	$1.44
Forfeited/Cancelled (in dollars per share)	$20.91
Outstanding at end of period (in dollars per share)	$8.34
Granted, Weighted average fair value at grant date (in dollars per share)	$22.47
Exercised, Total intrinsic value of exercises	$203,784
Aggregate intrinsic value	756,135	1,425,339
Exercisable (shares)	14,678
Exercisable - Weighted average exercise price (in dollars per share)	$2.68
Exercisable - Aggregate intrinsic value	597,831
Vested and expected to vest (shares)	20,966
Vested and expected to vest - Weighted average exercise price (in dollars per share)	$8.08
Vested and expected to vest - Aggregate intrinsic value	$748,068

Stockbased_compensation_Restri

Stock-based compensation - Restricted Stock Units Activity (Details) (USD $)	3 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
RSAs [Member]
Shares
Non-vested shares at beginning of period (shares)	17
Vested (shares)	-17
Non-vested shares at end of period (shares)	0
Weighted- average grant date fair value
Non-vested shares at beginning of period (in dollars per share)	$6.30
Non-vested shares at end of period (in dollars per share)	$0
Aggregate intrinsic value, Non-vested shares	$0	$1,017
RSUs [Member]
Shares
Non-vested shares at beginning of period (shares)	4,307
Granted (shares)	332
Vested (shares)	-817
Forfeited (shares)	-8
Non-vested shares at end of period (shares)	3,814
Weighted- average grant date fair value
Non-vested shares at beginning of period (in dollars per share)	$21.98
Granted (in dollars per share)	$46.42
Vested (in dollars per share)	$15.80
Forfeited (in dollars per share)	$79.22
Non-vested shares at end of period (in dollars per share)	$25.30

Stockbased_compensation_Alloca

Stock-based compensation - Allocation of Stock-based Compensation Expense (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total stock-based compensation expense	$26,501	$4,037
Total tax benefit recognized	-9,304	-342
Decrease in net income	17,197	3,695
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total stock-based compensation expense	5,957	2,894
RSUs [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total stock-based compensation expense	18,920	179
RSAs [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total stock-based compensation expense	566	964
ESPP [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total stock-based compensation expense	1,058	0
Cost of Revenue [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total stock-based compensation expense	283	168
Research and Development [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total stock-based compensation expense	3,535	1,401
Selling and Marketing [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total stock-based compensation expense	3,066	1,414
General and Administrative [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total stock-based compensation expense	$19,617	$1,054

Net_income_per_share_attributa2

Net income per share attributable to common stockholders - Additional Information (Details)	1 Months Ended
	Jun. 30, 2014
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Outstanding shares less than 10% of aggregate shares outstanding, conversion ratio	1
Common Class A [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Common stock, number of voting rights	1
Common Class B [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Common stock, number of voting rights	10

Net_income_per_share_attributa3

Net income per share attributable to common stockholders - Basic and Diluted Net Income per Share Attributable to Common Stockholders (Details) (USD $)	3 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Numerator:
Allocation of net income	$16,752	$11,049
Less: net income allocable to participating securities	0	-3,040
Net income attributable to common stockholders—basic	16,752	8,009
Add: net income allocable to dilutive participating securities	0	443
Net income attributable to common stockholders—diluted	16,752	8,452
Denominator:
Weighted-average common shares—basic (in shares)	132,278	81,582
Weighted-average common shares—diluted (in shares)	148,573	100,783
Net income per share attributable to common stockholders - Basic (in dollars per share)	$0.13	$0.10
Net income per share attributable to common stockholders - Diluted (in dollars per share)	$0.11	$0.08
Class A [Member]
Numerator:
Allocation of net income	8,926
Less: net income allocable to participating securities	0
Net income attributable to common stockholders—basic	8,926
Add: net income allocable to dilutive participating securities	0
Reallocation of net income	7,826
Net income attributable to common stockholders—diluted	16,752
Denominator:
Weighted-average common shares—basic (in shares)	70,483
Conversion of Class B to Class A common stock outstanding (in shares)	61,795
Effect of potentially dilutive stock options, ESPP shares and RSUs (in shares)	16,295
Weighted-average common shares—diluted (in shares)	148,573
Net income per share attributable to common stockholders - Basic (in dollars per share)	$0.13
Net income per share attributable to common stockholders - Diluted (in dollars per share)	$0.11
Class B [Member]
Numerator:
Allocation of net income	7,826
Less: net income allocable to participating securities	0
Net income attributable to common stockholders—basic	7,826
Add: net income allocable to dilutive participating securities	0
Reallocation of net income	968
Net income attributable to common stockholders—diluted	8,794
Denominator:
Weighted-average common shares—basic (in shares)	61,795
Conversion of Class B to Class A common stock outstanding (in shares)	0
Effect of potentially dilutive stock options, ESPP shares and RSUs (in shares)	16,202
Weighted-average common shares—diluted (in shares)	77,997
Net income per share attributable to common stockholders - Basic (in dollars per share)	$0.13
Net income per share attributable to common stockholders - Diluted (in dollars per share)	$0.11
Common [Member]
Numerator:
Allocation of net income		11,049
Less: net income allocable to participating securities		-3,040
Net income attributable to common stockholders—basic		8,009
Add: net income allocable to dilutive participating securities		443
Net income attributable to common stockholders—diluted		$8,452
Denominator:
Weighted-average common shares—basic (in shares)		81,582
Conversion of Class B to Class A common stock outstanding (in shares)		0
Effect of potentially dilutive stock options, ESPP shares and RSUs (in shares)		19,201
Weighted-average common shares—diluted (in shares)		100,783
Net income per share attributable to common stockholders - Basic (in dollars per share)		$0.10
Net income per share attributable to common stockholders - Diluted (in dollars per share)		$0.08

Net_income_per_share_attributa4

Net income per share attributable to common stockholders - Antidilutive Securities Excluded from Computation of Net Income per Share (Details)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from the calculation of diluted shares outstanding (shares)	1,989	34,608
Series A Redeemable Convertible Preferred Stock [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from the calculation of diluted shares outstanding (shares)	0	30,523
Stock Options, ESPP Shares and RSUs [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from the calculation of diluted shares outstanding (shares)	1,984	3,634
Unvested Stock Awards and Stock Options [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from the calculation of diluted shares outstanding (shares)	5	451

Income_tax_expense_Details

Income tax expense (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Income tax expense	$3,272,000	$3,882,000
Effective tax rate (percent)	16.30%	26.00%
Gross unrecognized tax benefits	16,900,000		16,600,000
Unrecognized tax benefits that would be recorded as reduction in income tax provision, if recognized	$16,900,000

Related_parties_Details

Related parties (Details) (USD $)	3 Months Ended		12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2013	Jun. 30, 2013
			Device
Company Affiliated with Investors [Member] | Related Party Transaction, Contract Manufacturing Agreement [Member]
Related Party Transaction [Line Items]
Payments made to affiliated vendor for services rendered	$500,000	$8,400,000
Chief Executive Officer (CEO) [Member] | Related Party Transaction, Chartered Aircraft Expenses [Member]
Related Party Transaction [Line Items]
Payments to related parties	400,000	0
Immediate Family Member of Member of the Board [Member]
Related Party Transaction [Line Items]
Naming rights agreement, period			3 years
Payments to be made to related party for naming rights			500,000
Number of devices provided to related party at no cost			100
Aggregate payments to related party for naming rights	300,000
Executive Officer [Member] | Related Party Transaction, Demand Payment Loan [Member]
Related Party Transaction [Line Items]
Loan amount to executive officer pursuant to demand payment loan				$150,000

Commitments_contingencies_and_2

Commitments, contingencies and guarantees - Schedule of Company's Contractual Commitments (Details) (USD $)	Mar. 31, 2015
In Thousands, unless otherwise specified
Commitments and Contingencies Disclosure [Abstract]
Operating leases	$44,004
Operating leases: 1 year (remaining 9 months in 2015)	7,870
Operating leases: 2-3 years (2016 and 2017)	21,927
Operating leases: 4-5 years (2018 and 2019)	14,207
Operating leases: More than 5 years (beyond 2019)	0
Sponsorship commitments	11,314
Sponsorship commitments: 1 year (remaining 9 months in 2015)	4,912
Sponsorship commitments: 2-3 years (2016 and 2017)	6,402
Sponsorship commitments: 4-5 years (2018 and 2019)	0
Sponsorship commitments: More than 5 years (beyond 2019)	0
Other contractual commitments	7,697
Other contractual commitments: 1 year (remaining 9 months in 2015)	2,673
Other contractual commitments: 2-3 years (2016 and 2017)	5,024
Other contractual commitments: 4-5 years (2018 and 2019)	0
Other contractual commitments: More than 5 years (beyond 2019)	0
Capital equipment purchase commitments	16,107
Capital equipment purchase commitments: 1 year (remaining 9 months in 2015)	16,107
Capital equipment purchase commitments: 2-3 years (2016 and 2017)	0
Capital equipment purchase commitments: 4-5 years (2018 and 2019)	0
Capital equipment purchase commitments: More than 5 years (beyond 2019)	0
Total contractual cash obligations	79,122
Total contractual cash obligations: 1 year (remaining 9 months in 2015)	31,562
Total contractual cash obligations: 2-3 years (2016 and 2017)	33,353
Total contractual cash obligations: 4-5 years (2018 and 2019)	14,207
Total contractual cash obligations: More than 5 years (beyond 2019)	$0

Commitments_contingencies_and_3

Commitments, contingencies and guarantees - Schedule of Product Warranty Liability Activity (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Movement in Standard and Extended Product Warranty, Increase (Decrease) [Roll Forward]
Beginning balances	$6,405	$3,870
Charged to cost of revenue	6,044	271
Settlements of warranty claims	-3,480	-1,590
Ending balances	$8,969	$2,551

Commitments_contingencies_and_4

Commitments, contingencies and guarantees - Narrative (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Commitments and Contingencies Disclosure [Abstract]
Rent expense	$2.40	$1.30
Warranty liability	8.5
Warranty liability recorded as element of long-term liabilities	$0.40

Concentrations_of_risk_and_seg2

Concentrations of risk and segment information - Narrative (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
			country
Risks and Uncertainties [Abstract]
Accounts receivable sold during the period	$35,300,000	$31,300,000
Factoring fees	300,000	300,000
Revenue, Major Customer [Line Items]
Revenue	363,109,000	235,716,000
United States [Member]
Revenue, Major Customer [Line Items]
Revenue	155,300,000	110,700,000
Formerly APAC to EMEA Region [Member]
Revenue, Major Customer [Line Items]
Revenue		4,100,000
Number of countries previously included in the APAC region			4
Outside the United States [Member]
Revenue, Major Customer [Line Items]
Long-lived assets	$28,800,000		25,400,000

Concentrations_of_risk_and_seg3

Concentrations of risk and segment information - Schedule of Customer Concentration by Risk Factor (Details) (Customer Concentration Risk [Member])	3 Months Ended	12 Months Ended	3 Months Ended
	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014
Accounts Receivable [Member] | A (Retailer) [Member]
Concentration Risk [Line Items]
Concentration risk, percentage	16.00%	17.00%
Accounts Receivable [Member] | B (Distributor) [Member]
Concentration Risk [Line Items]
Concentration risk, percentage	26.00%	14.00%
Accounts Receivable [Member] | C (Retailer) [Member]
Concentration Risk [Line Items]
Concentration risk, percentage	10.00%	11.00%
Accounts Receivable [Member] | D (Retailer) [Member]
Concentration Risk [Line Items]
Concentration risk, percentage	12.00%
Accounts Receivable [Member] | E (Distributor) [Member]
Concentration Risk [Line Items]
Concentration risk, percentage	11.00%
Sales Revenue [Member] | A (Retailer) [Member]
Concentration Risk [Line Items]
Concentration risk, percentage	12.00%		13.00%
Sales Revenue [Member] | B (Distributor) [Member]
Concentration Risk [Line Items]
Concentration risk, percentage			10.00%

Concentrations_of_risk_and_seg4

Concentrations of risk and segment information - Schedule of Revenue by Geographic Segment (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Revenue, Major Customer [Line Items]
Revenue	$363,109	$235,716
Americas [Member]
Revenue, Major Customer [Line Items]
Revenue	180,093	125,166
Europe, Middle East and Africa [Member]
Revenue, Major Customer [Line Items]
Revenue	139,079	84,174
Asia and Pacific Area Countries [Member]
Revenue, Major Customer [Line Items]
Revenue	$43,937	$26,376