Etsy (ETSY) 10-Q 22 May 15 2015 Q1 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information Document	3 Months Ended
	Mar. 31, 2015	Apr. 21, 2015
Document and Entity Information [Abstract]
Entity Registrant Name	ETSY INC
Entity Central Index Key	1370637
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
Entity Common Stock, Shares Outstanding		111,784,588

Consolidated_Balance_Sheets_Un

Consolidated Balance Sheets (Unaudited) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Current assets:
Cash and cash equivalents	$70,739	$69,659
Short-term investments	21,533	19,184
Accounts receivable, net of allowance for doubtful accounts of $1,841 and $2,306 as of December 31, 2014 and March 31, 2015, respectively	14,513	15,404
Prepaid and other current assets	10,789	12,241
Deferred tax assets—current	2,932	2,932
Deferred tax charge—current	9,687	0
Funds receivable and seller accounts	12,095	10,573
Total current assets	142,288	129,993
Restricted cash	5,341	5,341
Property and equipment, net	78,438	75,538
Goodwill	28,225	30,831
Intangible assets, net	4,524	5,410
Deferred tax charge—net of current portion	70,422	0
Other assets	2,124	2,022
Total assets	331,362	249,135
Current liabilities:
Accounts payable	7,058	8,231
Accrued expenses and other current liabilities	21,893	17,442
Capital lease obligations—current	2,181	1,755
Funds payable and amounts due to sellers	12,095	10,573
Deferred revenue	3,639	3,452
Total current liabilities	46,866	41,453
Capital lease obligations—net of current portion	3,542	3,148
Warrant liability	1,915	1,920
Deferred tax liabilities	70,849	3,081
Facility financing obligation	51,507	50,320
Other liabilities	21,569	1,913
Total liabilities	196,248	101,835
Commitments and contingencies
Convertible preferred stock (25,000,000 shares authorized pro forma):
Carrying Values	80,212	80,212
Stockholders’ equity:
Common stock ($0.001 par value, 120,000,000 shares authorized as of December 31, 2014 and March 31, 2015 and 1,400,000,000 shares authorized pro forma March 31, 2015; 44,180,939, 44,834,221 and 98,282,464 shares issued and outstanding as of December 31, 2014, March 31, 2015 and pro forma March 31, 2015, respectively)	45	44
Additional paid-in capital	112,694	103,355
Accumulated deficit	-68,963	-32,377
Accumulated other comprehensive (loss) income	11,126	-3,934
Total stockholders’ equity	54,902	67,088
Total liabilities, convertible preferred stock and stockholders’ equity	331,362	249,135
Series A Preferred Stock
Convertible preferred stock (25,000,000 shares authorized pro forma):
Carrying Values	808	808
Series B Preferred Stock
Convertible preferred stock (25,000,000 shares authorized pro forma):
Carrying Values	865	865
Series C Preferred Stock
Convertible preferred stock (25,000,000 shares authorized pro forma):
Carrying Values	3,361	3,361
Series D Preferred Stock
Convertible preferred stock (25,000,000 shares authorized pro forma):
Carrying Values	27,870	27,870
Series E Preferred Stock
Convertible preferred stock (25,000,000 shares authorized pro forma):
Carrying Values	6,201	6,201
Series 1 Preferred Stock
Convertible preferred stock (25,000,000 shares authorized pro forma):
Carrying Values	1,322	1,322
Series F Preferred Stock
Convertible preferred stock (25,000,000 shares authorized pro forma):
Carrying Values	39,785	39,785
Pro Forma
Current assets:
Cash and cash equivalents	70,739
Short-term investments	21,533
Accounts receivable, net of allowance for doubtful accounts of $1,841 and $2,306 as of December 31, 2014 and March 31, 2015, respectively	14,513
Prepaid and other current assets	10,789
Deferred tax assets—current	2,932
Deferred tax charge—current	9,687
Funds receivable and seller accounts	12,095
Total current assets	142,288
Restricted cash	5,341
Property and equipment, net	78,438
Goodwill	28,225
Intangible assets, net	4,524
Deferred tax charge—net of current portion	70,422
Other assets	2,124
Total assets	331,362
Current liabilities:
Accounts payable	7,058
Accrued expenses and other current liabilities	21,893
Capital lease obligations—current	2,181
Funds payable and amounts due to sellers	12,095
Deferred revenue	3,639
Total current liabilities	46,866
Capital lease obligations—net of current portion	3,542
Warrant liability	0
Deferred tax liabilities	70,849
Facility financing obligation	51,507
Other liabilities	21,569
Total liabilities	194,333
Commitments and contingencies
Convertible preferred stock (25,000,000 shares authorized pro forma):
Carrying Values	0
Stockholders’ equity:
Common stock ($0.001 par value, 120,000,000 shares authorized as of December 31, 2014 and March 31, 2015 and 1,400,000,000 shares authorized pro forma March 31, 2015; 44,180,939, 44,834,221 and 98,282,464 shares issued and outstanding as of December 31, 2014, March 31, 2015 and pro forma March 31, 2015, respectively)	98
Additional paid-in capital	194,768
Accumulated deficit	-68,963
Accumulated other comprehensive (loss) income	11,126
Total stockholders’ equity	137,029
Total liabilities, convertible preferred stock and stockholders’ equity	331,362
Pro Forma | Series A Preferred Stock
Convertible preferred stock (25,000,000 shares authorized pro forma):
Carrying Values	0
Pro Forma | Series B Preferred Stock
Convertible preferred stock (25,000,000 shares authorized pro forma):
Carrying Values	0
Pro Forma | Series C Preferred Stock
Convertible preferred stock (25,000,000 shares authorized pro forma):
Carrying Values	0
Pro Forma | Series D Preferred Stock
Convertible preferred stock (25,000,000 shares authorized pro forma):
Carrying Values	0
Pro Forma | Series E Preferred Stock
Convertible preferred stock (25,000,000 shares authorized pro forma):
Carrying Values	0
Pro Forma | Series 1 Preferred Stock
Convertible preferred stock (25,000,000 shares authorized pro forma):
Carrying Values	0
Pro Forma | Series F Preferred Stock
Convertible preferred stock (25,000,000 shares authorized pro forma):
Carrying Values	$0

Consolidated_Balance_Sheets_Un1

Consolidated Balance Sheets (Unaudited) (Parenthetical) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, except Share data, unless otherwise specified
Allowance for Doubtful Accounts	$2,306	$1,841
Common Stock, Par Value Per Share	$0.00	$0.00
Common Stock, Shares Authorized	120,000,000	120,000,000
Common Stock, Shares, Issued	44,834,221	44,180,939
Common Stock, Shares, Outstanding	44,834,221	44,180,939
Series A Preferred Stock
Temporary Equity, Par Value	$0.00	$0.00
Shares Authorized	2,363,786	2,363,786
Temporary Equity, Shares Issued	2,363,786	2,363,786
Shares Outstanding	2,363,786	2,363,786
Temporary Equity, Liquidation Preference	808	808
Series B Preferred Stock
Temporary Equity, Par Value	$0.00	$0.00
Shares Authorized	1,128,431	1,128,431
Temporary Equity, Shares Issued	1,128,425	1,128,425
Shares Outstanding	1,128,425	1,128,425
Temporary Equity, Liquidation Preference	903	903
Series C Preferred Stock
Temporary Equity, Par Value	$0.00	$0.00
Shares Authorized	1,234,084	1,234,084
Temporary Equity, Shares Issued	1,222,282	1,222,282
Shares Outstanding	1,222,282	1,222,282
Temporary Equity, Liquidation Preference	3,263	3,263
Series D Preferred Stock
Temporary Equity, Par Value	$0.00	$0.00
Shares Authorized	4,240,120	4,240,120
Temporary Equity, Shares Issued	4,215,610	4,215,610
Shares Outstanding	4,215,610	4,215,610
Temporary Equity, Liquidation Preference	27,949	27,949
Series E Preferred Stock
Temporary Equity, Par Value	$0.00	$0.00
Shares Authorized	401,450	401,450
Temporary Equity, Shares Issued	396,727	396,727
Shares Outstanding	396,727	396,727
Temporary Equity, Liquidation Preference	6,300	6,300
Series 1 Preferred Stock
Temporary Equity, Par Value	$0.00	$0.00
Shares Authorized	203,399	203,399
Temporary Equity, Shares Issued	203,399	203,399
Shares Outstanding	203,399	203,399
Temporary Equity, Liquidation Preference	1,312	1,312
Series F Preferred Stock
Temporary Equity, Par Value	$0.00	$0.00
Shares Authorized	11,594,203	11,594,203
Temporary Equity, Shares Issued	11,594,203	11,594,203
Shares Outstanding	11,594,203	11,594,203
Temporary Equity, Liquidation Preference	$40,000	$40,000
Pro Forma
Common Stock, Par Value Per Share	$0.00
Common Stock, Shares Authorized	1,400,000,000
Common Stock, Shares, Issued	98,282,464
Common Stock, Shares, Outstanding	98,282,464
Pro Forma | Convertible Preferred Stock
Shares Authorized	25,000,000
Pro Forma | Series A Preferred Stock
Temporary Equity, Shares Issued	0
Shares Outstanding	0
Pro Forma | Series B Preferred Stock
Temporary Equity, Shares Issued	0
Shares Outstanding	0
Pro Forma | Series C Preferred Stock
Temporary Equity, Shares Issued	0
Shares Outstanding	0
Pro Forma | Series D Preferred Stock
Temporary Equity, Shares Issued	0
Shares Outstanding	0
Pro Forma | Series E Preferred Stock
Temporary Equity, Shares Issued	0
Shares Outstanding	0
Pro Forma | Series 1 Preferred Stock
Temporary Equity, Shares Issued	0
Shares Outstanding	0
Pro Forma | Series F Preferred Stock
Temporary Equity, Shares Issued	0
Shares Outstanding	0

Consolidated_Statements_of_Ope

Consolidated Statements of Operations (Unaudited) (USD $)	3 Months Ended
In Thousands, except Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Income Statement [Abstract]
Revenue	$58,543	$40,536
Cost of revenue	20,709	15,394
Gross profit	37,834	25,142
Operating expenses:
Marketing	12,210	7,468
Product development	10,009	8,042
General and administrative	20,457	9,213
Total operating expenses	42,676	24,723
Income (loss) from operations	-4,842	419
Other (expense) income:
Interest expense and amortization of deferred financing costs	-193	-57
Interest and dividend income	15	4
Net unrealized (loss) gain on warrant and other liabilities	12	-616
Foreign exchange loss	-20,853	0
Total other expense	-21,019	-669
Loss before income taxes	-25,861	-250
Provision for income taxes	-10,725	-213
Net loss	($36,586)	($463)
Net loss per share attributable to common stockholders:
Basic and diluted (in dollars per share)	($0.84)	($0.01)
Weighted average common shares outstanding:
Basic and diluted (shares)	43,703,508	34,512,839
Pro forma net loss per share attributable to common stockholders:
Basic and diluted (in dollars per share)	($0.38)
Pro forma weighted average common shares outstanding:
Basic and diluted (shares)	97,151,751

Consolidated_Statements_of_Com

Consolidated Statements of Comprehensive Loss (Unaudited) Statement (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Statement of Comprehensive Income [Abstract]
Net loss	($36,586)	($463)
Other comprehensive (loss) income:
Cumulative translation adjustment	15,056	-22
Unrealized (losses) gains on marketable securities, net of tax	4	-3
Other comprehensive (loss) income	15,060	-25
Comprehensive loss	($21,526)	($488)

Consolidated_Statements_of_Cha

Consolidated Statements of Changes in Convertible Preferred Stock and Stockholders' Equity (Unaudited) (USD $)	Total	Series A Preferred Stock	Series B Preferred Stock	Series C Preferred Stock	Series D Preferred Stock	Series E Preferred Stock	Series 1 Preferred Stock	Series F Preferred Stock	Preferred Stock	Preferred Stock	Preferred Stock	Preferred Stock	Preferred Stock	Preferred Stock	Preferred Stock	Common Stock	Additional Paid-in Capital	Accumulated Deficit	Accumulated Other Comprehensive (Loss) Income
In Thousands, except Share data, unless otherwise specified									Series A Preferred Stock	Series B Preferred Stock	Series C Preferred Stock	Series D Preferred Stock	Series E Preferred Stock	Series 1 Preferred Stock	Series F Preferred Stock
Beginning balance at Dec. 31, 2014	$67,088															$44	$103,355	($32,377)	($3,934)
Convertible preferred stock, beginning balance at Dec. 31, 2014	80,212	808	865	3,361	27,870	6,201	1,322	39,785	808	865	3,361	27,870	6,201	1,322	39,785
Beginning balance, shares at Dec. 31, 2014																44,180,939
Convertible preferred stock, beginning balance (in shares) at Dec. 31, 2014		2,363,786	1,128,425	1,222,282	4,215,610	396,727	203,399	11,594,203	2,363,786	1,128,425	1,222,282	4,215,610	396,727	203,399	11,594,203
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock options expense	2,196																2,196
Exercise of vested options, shares																465,047
Exercise of vested options	1,188															1	1,187
Contribution to Etsy.org, shares																188,235
Contribution to Etsy.org	3,200																3,200
Stock expense-acquisitions	284																284
Excess tax benefit from the exercise of stock options	2,472																2,472
Other comprehensive income	15,060																		15,060
Net loss	-36,586																	-36,586
Ending balance at Mar. 31, 2015	54,902															45	112,694	-68,963	11,126
Convertible preferred stock, ending balance at Mar. 31, 2015	$80,212	$808	$865	$3,361	$27,870	$6,201	$1,322	$39,785	$808	$865	$3,361	$27,870	$6,201	$1,322	$39,785
Ending balance, shares at Mar. 31, 2015																44,834,221
Convertible preferred stock, ending balance (in shares) at Mar. 31, 2015		2,363,786	1,128,425	1,222,282	4,215,610	396,727	203,399	11,594,203	2,363,786	1,128,425	1,222,282	4,215,610	396,727	203,399	11,594,203

Consolidated_Statements_of_Cas

Consolidated Statements of Cash Flows (Unaudited) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Cash flows from operating activities
Net loss	($36,586)	($463)
Adjustments to reconcile net loss to net cash provided by operating activities:
Stock-based compensation expense	2,133	1,176
Stock-based compensation expense-acquisitions	1,841	0
Contribution of stock to Etsy.org	3,200	0
Depreciation and amortization expense	4,341	3,895
Bad debt expense	767	338
Foreign exchange loss	20,853	0
Amortization of debt issuance costs	31	0
Net unrealized loss (gain) on warrant and other liabilities	-12	616
Loss on disposal of assets	332	71
Deferred income taxes	67,768	108
Excess tax benefit from exercise of stock options	-2,472	0
Changes in operating assets and liabilities:
Accounts receivable	46	-14
Funds receivable and seller accounts	-1,911	-1,335
Prepaid expenses and other current assets	3,100	-2,353
Deferred tax charges	-80,109	0
Other assets	182	-46
Accounts payable	-419	-805
Accrued liabilities	3,969	3,481
Funds payable and amounts due to sellers	1,912	1,275
Deferred revenue	216	240
Other liabilities	19,713	0
Net cash provided by operating activities	8,895	6,184
Cash flows from investing activities
Purchases of property and equipment	-1,852	-571
Development of internal-use software	-2,428	-2,235
Purchase of U.S. Government and agency bills	-5,400	-9,262
Sale of marketable securities	3,055	8,066
Net cash used in investing activities	-6,625	-4,002
Cash flows from financing activities
Proceeds from exercise of stock options	1,188	5,758
Excess tax benefit from the exercise of stock options	2,472	0
Payments on capitalized lease obligations	-503	-323
Deferred payments on acquisition of business	0	-75
Payments relating to public offering	-1,482	0
Net cash provided by financing activities	1,675	5,360
Effect of exchange rate changes on cash	-2,865	117
Net increase in cash and cash equivalents	1,080	7,659
Cash and cash equivalents at beginning of period	69,659	36,795
Cash and cash equivalents at end of period	70,739	44,454
Supplemental non-cash disclosures
Equipment acquired under capital lease obligations	1,324	752
Stock-based compensation capitalized in development of capitalized software	63	53
Non-cash additions to development of internal-use software and property and equipment	576	30
Non-cash addition to construction in progress related to build-to-suit lease and facility financing obligation	1,674	0
Non-cash addition to capitalized public offering costs	$1,977	$0

Basis_of_Presentation_and_Summ

Basis of Presentation and Summary of Significant Accounting Policies	3 Months Ended
	Mar. 31, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation and Summary of Significant Accounting Policies	Basis of Presentation and Summary of Significant Accounting Policies
	Description of Business
	Etsy, Inc. (the “Company” or “Etsy”) was incorporated in Delaware in February 2006. Etsy operates a marketplace where people around the world connect, both online and offline, to make, sell and buy unique goods. The Company generates revenue primarily from transaction and listing fees, Promoted Listings, Direct Checkout fees, and Shipping Label sales.
	Initial Public Offering
	The Company completed an initial public offering (the "IPO") of its common stock on April 21, 2015. See Note 9—Subsequent Events for additional details.
	Basis of Consolidation
	The consolidated financial statements include the accounts of Etsy and its wholly-owned subsidiaries. All intercompany balances and transactions have been eliminated in consolidation.
	Unaudited Interim Financial Information
	The accompanying consolidated balance sheet as of March 31, 2015, and the related consolidated statements of operations, comprehensive loss, and cash flows for the three months ended March 31, 2014 and 2015, and the consolidated statement of changes in convertible preferred stock and stockholders’ equity for the three months ended March 31, 2015 are unaudited. The unaudited interim financial statements have been prepared on the same basis as the annual consolidated financial statements and, in the opinion of management, reflect all adjustments, which include only normal recurring adjustments, necessary to state fairly the Company’s financial position as of March 31, 2015 and results of operations and cash flows for the three months ended March 31, 2014 and 2015. The financial data and the other information disclosed in these notes to the consolidated financial statements related to these three-month periods are unaudited.
	There have been no material changes in the Company's significant accounting policies from those that were disclosed in the prospectus filed with the SEC on April 16, 2015.
	Unaudited Pro Forma Financial Information
	Upon the consummation of the IPO, all of the outstanding shares of convertible preferred stock converted into shares of common stock. The March 31, 2015 unaudited pro forma consolidated balance sheet data has been prepared to reflect the conversion of the outstanding convertible preferred stock into 53,448,243 shares of common stock.
	Reverse Stock Split
	The Company effected a 1-for-2 reverse split of its common stock on March 25, 2015. The reverse split combined each two shares of the Company’s issued and outstanding common stock into one share of common stock and correspondingly adjusted the conversion prices of its convertible preferred stock. No fractional shares were issued in connection with the reverse split, and any fractional shares resulting from the reverse split were rounded down to the nearest whole share. All share, per share and related information presented in the consolidated financial statements and accompanying notes have been retroactively adjusted, where applicable, to reflect the reverse stock split.
	Use of Estimates
	The preparation of the Company’s consolidated financial statements in conformity with accounting principles generally accepted in the United States of America (“GAAP”) requires management to make estimates and judgments that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. The accounting estimates that require management’s most difficult and subjective judgments include revenue recognition, income taxes, website development costs and internal-use software, purchase price allocations for business combinations, valuation of goodwill and intangible assets and stock-based compensation. The Company evaluates its estimates and judgments on an ongoing basis and revises them when necessary. Actual results may differ from the original or revised estimates.
	Income Taxes
	The Company's income tax provision for interim periods is determined using an estimate of its annual effective tax rate adjusted for discrete items, if any, for relevant interim periods. The Company updates its estimate of the annual effective tax rate each quarter and makes cumulative adjustments if its estimated annual tax rate changes.
	The Company's quarterly tax provision and quarterly estimate of its annual effective tax rate are subject to significant variations due to several factors, including variability in predicting its pretax and taxable income and the mix of jurisdictions to which those relate, changes of expenses or losses for which tax benefits are not recognized, and changes in the laws, regulations, and administrative practices of the jurisdictions in which the Company operates.
	Recent Accounting Pronouncements
	In May 2014, the Financial Accounting Standards Board, or FASB, issued an accounting standards update that replaces existing revenue recognition guidance. The new guidance is effective for the annual and interim periods beginning after December 15, 2017. Among other things, the updated guidance requires companies to recognize revenue in a way that depicts the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The Company is currently evaluating the effect the guidance will have on its consolidated financial statements.
	In August 2014, the FASB issued an accounting standard update under which management will be required to assess an entity’s ability to continue as a going concern and provide related disclosures in certain circumstances. The new guidance is effective for annual and interim periods beginning after December 15, 2016. The adoption of this guidance is not expected to have an impact on the Company’s financial statements or disclosures.
	In April 2015, the FASB issued an accounting standard under which customers will apply the same criteria as vendors to determine whether a cloud computing arrangement contains a software license or is solely a service contract. The new standard is effective for annual and interim periods beginning after December 15, 2015. The Company is currently evaluating the effect the guidance will have on its consolidated financial statements.

Debt

Debt	3 Months Ended
	Mar. 31, 2015
Debt Disclosure [Abstract]
Debt	Debt
	Credit Agreement
	In May 2014, the Company entered into a $35.0 million senior secured revolving credit facility pursuant to a Revolving Credit and Guaranty Agreement with several lenders (the “Credit Agreement”). The Credit Agreement will mature in May 2019. The Credit Agreement includes a letter of credit sublimit of $10.0 million and a swingline loan sublimit of $15.0 million.
	Borrowings under the Credit Agreement (other than swingline loans) bear interest, at the Company’s option, at (i) a base rate equal to the highest of (a) the prime rate, (b) the federal funds rate plus 0.50% and (c) an adjusted LIBOR rate for a one-month interest period plus 1.00%, in each case plus a margin ranging from 0.00% to 0.25% or (ii) an adjusted LIBOR rate plus a margin ranging from 1.00% to 1.25%. Swingline loans under the Credit Agreement bear interest at the same base rate (plus the margin applicable to borrowings bearing interest at the base rate). These margins are determined based on the total leverage ratio for the preceding four fiscal quarter period. The Company is also obligated to pay other customary fees for a credit facility of this size and type, including an unused commitment fee and fees associated with letters of credit. The Credit Agreement also permits the Company, in certain circumstances, to request an increase in the facility by an amount of up to $50.0 million (and in minimum amounts of $10.0 million) at the same maturity, pricing and other terms.
	The Credit Agreement contains customary representations and warranties applicable to the Company and its subsidiaries and customary affirmative and negative covenants applicable to the Company and its restricted subsidiaries. The negative covenants include restrictions on, among other things, indebtedness, liens, investments, mergers, dispositions, transactions with affiliates and dividends and other distributions. These restrictions do not prohibit a subsidiary of the Company from making pro rata payments to the Company or any other person that owns an equity interest in such subsidiary. The Credit Agreement contains a financial covenant that requires the Company and its subsidiaries to maintain a total leverage ratio (defined as net debt to adjusted EBITDA) not to exceed 3.50 to 1.00.
	The Credit Agreement includes customary events of default, including a change in control and a cross-default on the Company’s material indebtedness. The Company’s obligations under the Credit Agreement are secured by substantially all of the Company and its subsidiaries’ assets, and its obligations under the Credit Agreement are guaranteed by certain of the Company’s subsidiaries.
	In March 2015, the Company amended the Credit Agreement (the “Amended Credit Agreement”) to increase the senior secured revolving credit facility to $50.0 million. The Amended Credit Agreement contains the same pricing covenants and other material terms as the Credit Agreement. At March 31, 2015, the Company did not have any borrowings under the Credit Agreement.

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
	The Company's 2015 Equity Incentive Plan (the "2015 Plan") was adopted by its board of directors and approved by stockholders in March 2015. The 2015 Plan became effective immediately upon adoption although no awards were made under it until the effective date of the IPO. The 2015 Plan replaced the 2006 Stock Plan described below, and no further grants will be made under the 2006 Stock Plan as of the effective date of the IPO.
	Under the 2006 Stock Plan, incentive and nonqualified stock options or rights to purchase common stock were granted to eligible participants. Options were generally granted for a term of 10 years. Options granted under the 2006 Stock Plan generally vest 25% after the first year of service and ratably each month over the remaining 36-month period contingent on continued employment with the Company on each vesting date. At March 31, 2015, 24,252,967 shares were authorized under the 2006 Stock Plan, and 632,509 shares were available for future grant.
	The fair value of each option award is estimated on the date of grant using the Black-Scholes option-pricing model. Before it completed its IPO, the Company utilized equity valuations based on comparable publicly-traded companies, discounted free cash flows, an analysis of the Company's enterprise value and any other factors deemed relevant in estimating the fair value of its common stock. The risk-free rate for periods within the contractual life of the option is based on the U.S. Treasury yield curve in effect at the time of grant. Expected volatilities are based on implied volatilities from market comparisons of certain publicly traded companies and other factors. The expected term of stock options granted has been determined using the simplified method, which uses the midpoint between the vesting date and the contractual term. The requisite service period is generally four years from the date of grant.
	The Company granted 1,018,745 shares in the three months ended March 31, 2015 at a weighted-average grant date fair value of $7.19.
	The fair value of options granted in each year using the Black-Scholes pricing model has been based on the following assumptions:
		Three Months Ended
		March 31,
		2014		2015
	Volatility	48.0% - 49.0%		40.4% - 42.7%
	Risk-free interest rate	1.7% - 1.9%		1.3% - 1.3%
	Expected term (in years)	5.46 - 6.08		5.58 - 6.08
	Dividend rate	—%		—%
	Total stock-based compensation expense included in the consolidated statements of operations is as follows (in thousands):
		Three Months Ended
		March 31,
		2014			2015
	Cost of revenue	$	95		$	408
	Marketing	30			103
	Product development	291			544
	General and administrative	760			2,919
		$	1,176		$	3,974
	The total stock-based compensation expense in the three months ended March 31, 2015 includes $1.8 million in acquisition-related stock-based compensation expense.

Income_Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2015
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes
	In January 2015, the Company implemented an updated global corporate structure to more closely align with its global operations and future expansion plans outside of the United States. The new structure changes how the Company uses its intellectual property and implements certain intercompany arrangements, which the Company believes may result in a reduction in its overall effective tax rate and other operational efficiencies. The revised structure resulted in the setup of a deferred tax liability in the amount of $67.8 million on the taxable gain created in the transaction. A deferred charge was recorded for the same amount representing the future income tax which will be amortized into income tax expense over five years. During the three months ended March 31, 2015, $6.1 million was recorded to income tax expense.
	The amount of unrecognized tax benefits, included within “Other liabilities” on the consolidated balance sheets, increased $20.4 million in the three months ended March 31, 2015, from $0.4 million at December 31, 2014 to $20.8 million at March 31, 2015. The increase was primarily in connection with the implementation of the updated global corporate structure. During the three months ended March 31, 2015, $1.8 million was recorded to income tax expense. The total amount of unrecognized tax benefits that, if recognized, would favorably affect the effective tax rate is $2.4 million at March 31, 2015. A deferred charge of $20.2 million was recorded representing the future income tax which will be amortized into income tax expense over five years. In addition, the Company is subject to examination in various jurisdictions related to income tax matters. The resolution of these matters, giving recognition to the recorded reserve, could have an adverse impact on the Company’s business.

Fair_Value_Measurements

Fair Value Measurements	3 Months Ended
	Mar. 31, 2015
Fair Value Disclosures [Abstract]
Fair Value Measurements	Fair Value Measurements
	The Company has characterized its investments in marketable securities, based on the priority of the inputs used to value the investments, into a three-level fair value hierarchy. The fair value hierarchy gives the highest priority to quoted prices in active markets for identical assets or liabilities (Level 1), and lowest priority to unobservable inputs (Level 3). If the inputs used to measure the investments fall within different levels of the hierarchy, the categorization is based on the lowest level input that is significant to the fair value measurement of the investment. Investments recorded in the accompanying consolidated balance sheet are categorized based on the inputs to valuation techniques as follows:
	Level 1—These are investments where values are based on unadjusted quoted prices for identical assets in an active market that the Company has the ability to access.
	Level 2—These are investments where values are based on quoted market prices in markets that are not active or model derived valuations in which all significant inputs are observable in active markets.
	Level 3—These are liabilities where values are derived from techniques in which one or more significant inputs are unobservable.
	The following are the major categories of assets and liabilities measured at fair value on a recurring basis as of December 31, 2014 and March 31, 2015 using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2) and significant unobservable inputs (Level 3) (in thousands):
		As of December 31, 2014
		Level 1			Level 2		Level 3		Total
	Asset
	Cash equivalents:
	Money market funds	$	20,288		$	—	$	—	$	20,288
	U.S. Government bills	2,426			—		—		2,426
		22,714			—		—		22,714
	Short-term investments:
	U.S. Government and agency bills	19,184			—		—		19,184
		$	41,898		$	—	$	—	$	41,898
	Liability
	Put option classified as liability	$	—		$	—	$	16	$	16
	Acquisition–related contingent consideration classified as liability	—			—		3,374		3,374
	Warrants classified as liability	—			—		1,920		1,920
		$	—		$	—	$	5,310	$	5,310
		As of March 31, 2015
		Level 1			Level 2		Level 3		Total
	Asset
	Cash equivalents:
	Money market funds	$	20,289		$	—	$	—	$	20,289
	U.S. Government bills	86			—		—		86
		20,375			—		—		20,375
	Short-term investments:
	U.S. Government and agency bills	21,533			—		—		21,533
		$	41,908		$	—	$	—	$	41,908
	Liability
	Put option classified as liability	$	—		$	—	$	10	$	10
	Acquisition–related contingent consideration classified as liability	—			—		4,931		4,931
	Warrants classified as liability	—			—		1,915		1,915
		$	—		$	—	$	6,856	$	6,856
	Level 1 instruments include money market funds and Corporate Certificates of Deposit and AAA-rated U.S. Government and agency securities, which are valued based on inputs including quotes from broker-dealers or recently executed transactions in the same or similar securities.
	The table below provides a reconciliation of the beginning and ending balances for the liabilities measured at fair value using significant unobservable inputs (Level 3) (in thousands):
		Three Months Ended
		March 31,
		2015
	Balance at beginning of period	$	5,310
	Acquired	—
	Changes to liability-classified stock awards	1,557
	Settled	—
	Net decrease in fair value	(11		)
	Balance at end of period	$	6,856

Net_Loss_Per_Share

Net Loss Per Share	3 Months Ended
	Mar. 31, 2015
Earnings Per Share [Abstract]
Net Loss Per Share	Net Loss Per Share
	The following table presents the calculation of basic and diluted net loss per share for periods presented (in thousands, except share and per share data):
		Three Months Ended
		March 31,
		2014				2015
	Net loss	$	(463	)		$	(36,586	)
	Basic and diluted shares:
	Weighted-average common shares outstanding	34,512,839				43,703,508
	Net loss per share attributable to common stockholders:
	Basic and diluted net loss per share applicable to common stockholders	$	(0.01	)		$	(0.84	)
	The following potential common shares were excluded from the calculation of diluted net loss per share attributable to common stockholders because their effect would have been anti-dilutive for the periods presented:
		Three Months Ended
		March 31,
		2014			2015
	Stock options	11,832,375			12,009,423
	Warrants	203,030			203,030
	Convertible preferred stock	53,448,243			53,448,243
	Total anti-dilutive securities	65,483,648			65,660,696
	Unaudited Pro Forma Net Loss Per Share
	The following table sets forth the computation of the Company’s unaudited pro forma basic and diluted net loss per share of common stock (in thousands except share and per share data):
		Three Months Ended
		March 31,
		2015
	Numerator:
	Net loss for basic and diluted earnings per share	$	(36,586	)
	Add: Net change in fair value of warrant liabilities	(5		)
	Net loss for pro forma basic and diluted earnings per share	$	(36,591	)
	Denominator:
	Weighted average common stock outstanding (basic)	43,703,508
	Add: conversion of convertible preferred stock	53,448,243
	Total weighted average shares outstanding used in basic pro forma net loss per share	97,151,751
	Dilutive effect of stock options and warrants	—
	Total weighted average shares outstanding used in diluted pro forma net loss per share	97,151,751
	Pro forma basic and diluted net loss per share	$	(0.38	)
	The following potential common shares were excluded from the calculation of diluted pro forma net loss per share attributable to common stockholders because their effect would have been anti-dilutive for the periods presented:
		Three Months Ended
		March 31,
		2015
	Stock options	12,009,423
	Warrants	203,030
	Total anti-dilutive	12,212,453

Segment_and_Geographic_Informa

Segment and Geographic Information	3 Months Ended
	Mar. 31, 2015
Segment Reporting [Abstract]
Segment and Geographic Information	Segment and Geographic Information
	Revenue by country is based on the current billing address of the seller. The following table summarizes revenue by geographic area (in thousands):
		Three Months Ended
		March 31,
		2014		2015
	United States	$	32,797	$	45,752
	International	7,739		12,791
	Revenue	$	40,536	$	58,543
	No individual international country’s revenue exceeds 5% of total revenue.

Contingencies

Contingencies	3 Months Ended
	Mar. 31, 2015
Commitments and Contingencies Disclosure [Abstract]
Contingencies	Contingencies
	Tax Contingencies
	The Company had a reserve of $3.5 million and $3.8 million at December 31, 2014 and March 31, 2015, respectively, for certain non-income tax obligations, representing management’s best estimate of its liability. In addition, the Company could be subject to examination in various jurisdictions related to non-income tax matters. The resolution of these types of matters, giving recognition to the recorded reserve, could have an adverse impact on the Company’s business.
	Legal Proceedings
	On May 13, 2015, a purported securities class action complaint (Altayyar v. Etsy, Inc., et al., Docket No. 1:15-cv-02785) was filed in the United States District Court for the Eastern District of New York against the Company and certain officers. The complaint is brought on behalf of a purported class consisting of all persons or entities who purchased or otherwise acquired shares of the Company's common stock from April 16, 2015 through and including May 10, 2015. The complaint asserts violations of Sections 10(b) and 20(a) of the Securities Exchange Act of 1934 based on allegedly false or misleading statements and omissions with respect to, among other things, merchandise for sale on the Company's website that may be counterfeit or constitute trademark or copyright infringement and actions taken by third-party brands against Etsy sellers for trademark or copyright infringement. The complaint seeks certification as a class action and unspecified compensatory damages plus interest and attorneys' fees. The Company and the named officers intend to defend themselves vigorously against this action. The Company anticipates that related suits could also be filed and, if so, would be consolidated into a single class action against the Company. In light of, among other things, the early stage of the litigation, the Company is unable to predict the outcome of this matter and is unable to make a meaningful estimate of the amount or range of loss, if any, that could result from an unfavorable outcome.
	In addition, from time to time in the normal course of business, various other claims and litigation have been asserted or commenced against the Company. Due to uncertainties inherent in litigation and other claims, the Company can give no assurance that it will prevail in any such matters, which could subject the Company to significant liability for damages. Any claims or litigation, regardless of their success, could have an adverse effect on the Company’s consolidated results of operations or cash flows in the period the claims or litigation are resolved. As of March 31, 2015, the Company does not believe that there are any material litigation exposures relating to these other claims.

Subsequent_Events

Subsequent Events	3 Months Ended
	Mar. 31, 2015
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events
	On April 21, 2015, the Company closed its IPO in which the Company issued and sold 13,333,333 shares of common stock at a public offering price of $16.00 per share. The Company received net proceeds of $194.2 million after deducting underwriting discounts of $13.9 million and other offering expenses of approximately $5.2 million. These expenses were recorded against the proceeds received from the IPO.
	Certain selling stockholders sold an additional 5,833,332 shares of common stock in the IPO. The Company did not receive any proceeds from the sale of the shares sold by the selling stockholders.
	Upon the closing of the IPO, all outstanding shares of preferred stock of the Company converted into 53,448,243 shares of common stock.

Basis_of_Presentation_and_Summ1

Basis of Presentation and Summary of Significant Accounting Policies (Policies)	3 Months Ended
	Mar. 31, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Consolidation	The consolidated financial statements include the accounts of Etsy and its wholly-owned subsidiaries. All intercompany balances and transactions have been eliminated in consolidation.
Use of Estimates	The preparation of the Company’s consolidated financial statements in conformity with accounting principles generally accepted in the United States of America (“GAAP”) requires management to make estimates and judgments that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. The accounting estimates that require management’s most difficult and subjective judgments include revenue recognition, income taxes, website development costs and internal-use software, purchase price allocations for business combinations, valuation of goodwill and intangible assets and stock-based compensation. The Company evaluates its estimates and judgments on an ongoing basis and revises them when necessary. Actual results may differ from the original or revised estimates.
Income Taxes	The Company's income tax provision for interim periods is determined using an estimate of its annual effective tax rate adjusted for discrete items, if any, for relevant interim periods. The Company updates its estimate of the annual effective tax rate each quarter and makes cumulative adjustments if its estimated annual tax rate changes.
	The Company's quarterly tax provision and quarterly estimate of its annual effective tax rate are subject to significant variations due to several factors, including variability in predicting its pretax and taxable income and the mix of jurisdictions to which those relate, changes of expenses or losses for which tax benefits are not recognized, and changes in the laws, regulations, and administrative practices of the jurisdictions in which the Company operates.
Recent Accounting Pronouncements	In May 2014, the Financial Accounting Standards Board, or FASB, issued an accounting standards update that replaces existing revenue recognition guidance. The new guidance is effective for the annual and interim periods beginning after December 15, 2017. Among other things, the updated guidance requires companies to recognize revenue in a way that depicts the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The Company is currently evaluating the effect the guidance will have on its consolidated financial statements.
	In August 2014, the FASB issued an accounting standard update under which management will be required to assess an entity’s ability to continue as a going concern and provide related disclosures in certain circumstances. The new guidance is effective for annual and interim periods beginning after December 15, 2016. The adoption of this guidance is not expected to have an impact on the Company’s financial statements or disclosures.
	In April 2015, the FASB issued an accounting standard under which customers will apply the same criteria as vendors to determine whether a cloud computing arrangement contains a software license or is solely a service contract. The new standard is effective for annual and interim periods beginning after December 15, 2015. The Company is currently evaluating the effect the guidance will have on its consolidated financial statements.

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 Payment Award, Stock Options, Valuation Assumptions	The fair value of options granted in each year using the Black-Scholes pricing model has been based on the following assumptions:
		Three Months Ended
		March 31,
		2014		2015
	Volatility	48.0% - 49.0%		40.4% - 42.7%
	Risk-free interest rate	1.7% - 1.9%		1.3% - 1.3%
	Expected term (in years)	5.46 - 6.08		5.58 - 6.08
	Dividend rate	—%		—%
Schedule of Share-based Compensation, Allocation of Recognized Period Costs	Total stock-based compensation expense included in the consolidated statements of operations is as follows (in thousands):
		Three Months Ended
		March 31,
		2014			2015
	Cost of revenue	$	95		$	408
	Marketing	30			103
	Product development	291			544
	General and administrative	760			2,919
		$	1,176		$	3,974

Fair_Value_Measurements_Tables

Fair Value Measurements (Tables)	3 Months Ended
	Mar. 31, 2015
Fair Value Disclosures [Abstract]
Fair Value Measurements, Recurring	The following are the major categories of assets and liabilities measured at fair value on a recurring basis as of December 31, 2014 and March 31, 2015 using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2) and significant unobservable inputs (Level 3) (in thousands):
		As of December 31, 2014
		Level 1			Level 2		Level 3		Total
	Asset
	Cash equivalents:
	Money market funds	$	20,288		$	—	$	—	$	20,288
	U.S. Government bills	2,426			—		—		2,426
		22,714			—		—		22,714
	Short-term investments:
	U.S. Government and agency bills	19,184			—		—		19,184
		$	41,898		$	—	$	—	$	41,898
	Liability
	Put option classified as liability	$	—		$	—	$	16	$	16
	Acquisition–related contingent consideration classified as liability	—			—		3,374		3,374
	Warrants classified as liability	—			—		1,920		1,920
		$	—		$	—	$	5,310	$	5,310
		As of March 31, 2015
		Level 1			Level 2		Level 3		Total
	Asset
	Cash equivalents:
	Money market funds	$	20,289		$	—	$	—	$	20,289
	U.S. Government bills	86			—		—		86
		20,375			—		—		20,375
	Short-term investments:
	U.S. Government and agency bills	21,533			—		—		21,533
		$	41,908		$	—	$	—	$	41,908
	Liability
	Put option classified as liability	$	—		$	—	$	10	$	10
	Acquisition–related contingent consideration classified as liability	—			—		4,931		4,931
	Warrants classified as liability	—			—		1,915		1,915
		$	—		$	—	$	6,856	$	6,856
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation	The table below provides a reconciliation of the beginning and ending balances for the liabilities measured at fair value using significant unobservable inputs (Level 3) (in thousands):
		Three Months Ended
		March 31,
		2015
	Balance at beginning of period	$	5,310
	Acquired	—
	Changes to liability-classified stock awards	1,557
	Settled	—
	Net decrease in fair value	(11		)
	Balance at end of period	$	6,856

Net_Loss_Per_Share_Tables

Net Loss Per Share (Tables)	3 Months Ended
	Mar. 31, 2015
Earnings Per Share [Abstract]
Schedule of Earnings Per Share, Basic and Diluted	The following table presents the calculation of basic and diluted net loss per share for periods presented (in thousands, except share and per share data):
		Three Months Ended
		March 31,
		2014				2015
	Net loss	$	(463	)		$	(36,586	)
	Basic and diluted shares:
	Weighted-average common shares outstanding	34,512,839				43,703,508
	Net loss per share attributable to common stockholders:
	Basic and diluted net loss per share applicable to common stockholders	$	(0.01	)		$	(0.84	)
	The following table sets forth the computation of the Company’s unaudited pro forma basic and diluted net loss per share of common stock (in thousands except share and per share data):
		Three Months Ended
		March 31,
		2015
	Numerator:
	Net loss for basic and diluted earnings per share	$	(36,586	)
	Add: Net change in fair value of warrant liabilities	(5		)
	Net loss for pro forma basic and diluted earnings per share	$	(36,591	)
	Denominator:
	Weighted average common stock outstanding (basic)	43,703,508
	Add: conversion of convertible preferred stock	53,448,243
	Total weighted average shares outstanding used in basic pro forma net loss per share	97,151,751
	Dilutive effect of stock options and warrants	—
	Total weighted average shares outstanding used in diluted pro forma net loss per share	97,151,751
	Pro forma basic and diluted net loss per share	$	(0.38	)
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share	The following potential common shares were excluded from the calculation of diluted pro forma net loss per share attributable to common stockholders because their effect would have been anti-dilutive for the periods presented:
		Three Months Ended
		March 31,
		2015
	Stock options	12,009,423
	Warrants	203,030
	Total anti-dilutive	12,212,453
	The following potential common shares were excluded from the calculation of diluted net loss per share attributable to common stockholders because their effect would have been anti-dilutive for the periods presented:
		Three Months Ended
		March 31,
		2014			2015
	Stock options	11,832,375			12,009,423
	Warrants	203,030			203,030
	Convertible preferred stock	53,448,243			53,448,243
	Total anti-dilutive securities	65,483,648			65,660,696

Segment_and_Geographic_Informa1

Segment and Geographic Information (Tables)	3 Months Ended
	Mar. 31, 2015
Segment Reporting [Abstract]
Revenue from External Customers by Geographic Areas	The following table summarizes revenue by geographic area (in thousands):
		Three Months Ended
		March 31,
		2014		2015
	United States	$	32,797	$	45,752
	International	7,739		12,791
	Revenue	$	40,536	$	58,543

Basis_of_Presentation_and_Summ2

Basis of Presentation and Summary of Significant Accounting Policies (Details)	0 Months Ended	3 Months Ended
	Mar. 25, 2015	Mar. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Reverse stock split conversion ratio	0.5
Pro Forma
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Conversion of convertible preferred stock into common stock, shares		53,448,243

Debt_Details

Debt (Details) (Revolving Credit Facility, USD $)	3 Months Ended
	Mar. 31, 2015	31-May-14
Debt Instrument [Line Items]
Line of credit, maximum borrowing capacity	50,000,000	$35,000,000
Line of credit, maximum available borrowing capacity	50,000,000
Line of credit, maximum available borrowing capacity, minimum increment of increase	10,000,000
Total leverage ratio	3.5
Letter of Credit
Debt Instrument [Line Items]
Line of credit, maximum borrowing capacity		10,000,000
Bridge Loan
Debt Instrument [Line Items]
Line of credit, maximum borrowing capacity		$15,000,000
Federal Funds Effective Swap Rate
Debt Instrument [Line Items]
Line of credit, basis spread on variable interest rate	0.50%
One-Month London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Line of credit, basis spread on variable interest rate	1.00%
Minimum | One-Month London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Line of credit, basis spread on variable interest rate	1.00%
Minimum | Base Rate
Debt Instrument [Line Items]
Line of credit, basis spread on variable interest rate	0.00%
Maximum | One-Month London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Line of credit, basis spread on variable interest rate	1.25%
Maximum | Base Rate
Debt Instrument [Line Items]
Line of credit, basis spread on variable interest rate	0.25%

Stockbased_Compensation_Fair_V

Stock-based Compensation - Fair Value of Options Granted Using the Black-Scholes Pricing Model (Details) (Stock Options)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Volatility, minimum	40.40%	48.00%
Volatility, maximum	42.70%	49.00%
Risk-free interest rate, minimum	1.30%	1.70%
Risk-free interest rate, maximum	1.30%	1.90%
Dividend rate	0.00%	0.00%
Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected term (in years)	5 years 6 months 29 days	5 years 5 months 16 days
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected term (in years)	6 years 0 months 29 days	6 years 0 months 29 days

Stockbased_Compensation_Alloca

Stock-based Compensation - Allocated Share-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 [Line Items]
Share-based compensation expense	$3,974	$1,176
Cost of revenue
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	408	95
Marketing
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	103	30
Product development
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	544	291
General and administrative
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	$2,919	$760

Stockbased_Compensation_Additi

Stock-based Compensation - Additional Information (Details) (USD $)	3 Months Ended
In Thousands, except Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options granted in period (in shares)	1,018,745
Weighted average grant date fair value of options	$7.19
Stock-based compensation expense-acquisitions	$1,841	$0
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock option requisite service period	4 years
2006 Stock Plan | Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Term for options	10 years
Number of shares authorized	24,252,967
Number of shares available for grant	632,509
Tranche One | 2006 Stock Plan | Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock option vesting rights, percentage	25.00%
Tranche Two | 2006 Stock Plan | Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock option vesting period	36 months

Income_Taxes_Details

Income Taxes (Details) (USD $)	1 Months Ended	3 Months Ended
In Millions, unless otherwise specified	Jan. 31, 2015	Mar. 31, 2015	Jan. 01, 2015	Dec. 31, 2014
Income Tax Contingency [Line Items]
Deferred tax liability for gain in revised corporate structure transaction			$67.80
Deferred charge amortization period	5 years
Deferred charge amortized to income tax expense		6.1
Amortization of deferred charges related to unrecognized tax benefits		1.8
Unrecognized tax benefits that would impact effective tax rate favorably		2.4
Deferred charge related to unrecognized tax benefits		20.2
Deferred charge related to deferred tax liability	67.8
Other Noncurrent Liabilities
Income Tax Contingency [Line Items]
Increase in unrecognized tax benefits		20.4
Unrecognized tax benefits		$20.80		$0.40

Fair_Value_Measurements_Schedu

Fair Value Measurements - Schedule of Major Categories of Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) (Recurring, USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	$20,375	$22,714
Short-term Investments	41,908	41,898
Liability	6,856	5,310
Put Option Classified As Liability
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Liability	10	16
Acquisition-related Contingent Consideration Classsified as Liability
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Liability	4,931	3,374
Warrants Classified as Liability
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Liability	1,915	1,920
Money Market Funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	20,289	20,288
US Government Bills
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	86	2,426
US Government and Agency Bills
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, Fair Value Disclosure	21,533	19,184
Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	20,375	22,714
Short-term Investments	41,908	41,898
Liability	0	0
Level 1 | Put Option Classified As Liability
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Liability	0	0
Level 1 | Acquisition-related Contingent Consideration Classsified as Liability
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Liability	0	0
Level 1 | Warrants Classified as Liability
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Liability	0	0
Level 1 | Money Market Funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	20,289	20,288
Level 1 | US Government Bills
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	86	2,426
Level 1 | US Government and Agency Bills
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, Fair Value Disclosure	21,533	19,184
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	0	0
Short-term Investments	0	0
Liability	0	0
Level 2 | Put Option Classified As Liability
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Liability	0	0
Level 2 | Acquisition-related Contingent Consideration Classsified as Liability
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Liability	0	0
Level 2 | Warrants Classified as Liability
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Liability	0	0
Level 2 | Money Market Funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	0	0
Level 2 | US Government Bills
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	0	0
Level 2 | US Government and Agency Bills
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, Fair Value Disclosure	0	0
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	0	0
Short-term Investments	0	0
Liability	6,856	5,310
Level 3 | Put Option Classified As Liability
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Liability	10	16
Level 3 | Acquisition-related Contingent Consideration Classsified as Liability
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Liability	4,931	3,374
Level 3 | Warrants Classified as Liability
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Liability	1,915	1,920
Level 3 | Money Market Funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	0	0
Level 3 | US Government Bills
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	0	0
Level 3 | US Government and Agency Bills
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, Fair Value Disclosure	$0	$0

Fair_Value_Measurements_Schedu1

Fair Value Measurements - Schedule of Unobservable Inputs Reconciliation (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance at beginning of period	$5,310
Acquired	0
Changes to liability-classified stock awards	1,557
Settled	0
Net decrease in fair value	-11
Balance at end of period	$6,856

Net_Loss_Per_Share_Calculation

Net Loss Per Share - Calculation of Basic and Diluted Net Loss Per Share (Details) (USD $)	3 Months Ended
In Thousands, except Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Earnings Per Share [Abstract]
Net loss	($36,586)	($463)
Basic and diluted shares:
Weighted-average common shares outstanding	43,703,508	34,512,839
Net loss per share attributable to common stockholders:
Basic and diluted net loss per share applicable to common stockholders	($0.84)	($0.01)

Net_Loss_Per_Share_Summary_of_

Net Loss Per Share - Summary of Shares Excluded from the Calculation of Diluted Net Loss Per Share (Details)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive securities excluded from computation of earnings per share	65,660,696	65,483,648
Stock Options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive securities excluded from computation of earnings per share	12,009,423	11,832,375
Warrants
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive securities excluded from computation of earnings per share	203,030	203,030
Convertible Preferred Stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive securities excluded from computation of earnings per share	53,448,243	53,448,243
Pro Forma
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive securities excluded from computation of earnings per share	12,212,453
Pro Forma | Stock Options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive securities excluded from computation of earnings per share	12,009,423
Pro Forma | Warrants
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive securities excluded from computation of earnings per share	203,030

Net_Loss_Per_Share_Calculation1

Net Loss Per Share - Calculation of Basic and Diluted Net Loss Per Share, Pro Forma (Details) (USD $)	3 Months Ended
In Thousands, except Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Numerator:
Net loss	($36,586)	($463)
Add: Net change in fair value of warrant liabilities	-5
Net loss for pro forma basic and diluted earnings per share	($36,591)
Denominator:
Weighted average common stock outstanding (basic)	43,703,508
Add: conversion of convertible preferred stock	53,448,243
Total weighted average shares outstanding used in basic pro forma net loss per share	97,151,751
Dilutive effect of stock options and warrants	0
Total weighted average shares outstanding used in diluted pro forma net loss per share	97,151,751
Pro forma basic and diluted net loss per share	($0.38)

Segment_and_Geographic_Informa2

Segment and Geographic Information (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Revenue, Major Customer [Line Items]
Revenue	$58,543	$40,536
United States
Revenue, Major Customer [Line Items]
Revenue	45,752	32,797
International
Revenue, Major Customer [Line Items]
Revenue	$12,791	$7,739

Contingencies_Details

Contingencies (Details) (Non-income Tax Obligations, USD $)	Mar. 31, 2015	Dec. 31, 2014
In Millions, unless otherwise specified
Non-income Tax Obligations
Loss Contingencies [Line Items]
Non-income tax obligation reserve	$3.80	$3.50

Subsequent_Events_Details

Subsequent Events (Details) (IPO, Subsequent Event, USD $)	0 Months Ended
In Millions, except Share data, unless otherwise specified	Apr. 21, 2015	Apr. 21, 2015
Subsequent Event [Line Items]
Shares issued	13,333,333
Proceeds from initial public offering	$194.20
Share price	$16	$16
Underwriting discount	13.9
Other offering expense	$5.20
Sale of stock by stockholders	5,833,332
Convertible Preferred Stock
Subsequent Event [Line Items]
Conversion of convertible preferred stock into common stock, shares	53,448,243