Hortonworks 10-Q 14 May 15 2015 Q1 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	3 Months Ended
	Mar. 31, 2015	11-May-15
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	FALSE
Document Period End Date	31-Mar-15
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	Q1
Trading Symbol	HDP
Entity Registrant Name	Hortonworks, Inc.
Entity Central Index Key	1610532
Current Fiscal Year End Date	-19
Entity Filer Category	Non-accelerated Filer
Entity Common Stock, Shares Outstanding		43,176,191

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	$78,740	$129,084
Short-term investments	87,226	75,381
Accounts receivable, net (including $1,635 and $2,020 as of March 31, 2015 and December 31, 2014 from related parties)	34,507	32,900
Prepaid expenses and other current assets	6,475	3,728
Total current assets	206,948	241,093
Property and equipment, net	12,248	11,182
Long-term investments	4,615
Goodwill	2,119	2,119
Other non-current assets	678	304
Restricted cash	1,310	1,341
TOTAL ASSETS	227,918	256,039
CURRENT LIABILITIES:
Accounts payable	3,992	7,087
Accrued compensation and benefits	10,377	9,913
Accrued liabilities	8,956	6,333
Deferred revenue (including $1,250 and $1,679 as of March 31, 2015 and December 31, 2014 from related parties)	59,053	50,280
Total current liabilities	82,378	73,613
Long-term deferred revenue (including $4,126 and $5,443 as of March 31, 2015 and December 31, 2014 from related parties)	9,198	12,643
Other long-term liabilities	3,753	2,713
TOTAL LIABILITIES	95,329	88,969
Commitments and contingencies (Note 3)
STOCKHOLDERS' EQUITY:
Common stock, par value of $0.0001 per share-114,500,000 shares authorized as of March 31, 2015 and December 31, 2014; 41,925,855 and 40,897,583 shares issued and outstanding as of March 31, 2015 and December 31, 2014, actual	4	4
Additional paid-in capital	444,776	439,005
Accumulated other comprehensive loss	-320	-202
Accumulated deficit	-311,871	-271,737
TOTAL STOCKHOLDERS' EQUITY	132,589	167,070
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$227,918	$256,039

Condensed_Consolidated_Balance1

Condensed Consolidated Balance Sheets (Parenthetical) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, except Share data, unless otherwise specified
Statement of Financial Position [Abstract]
Accounts receivable from related parties	$1,635	$2,020
Deferred revenue from related parties	1,250	1,679
Long-term deferred revenue from related parties	$4,126	$5,443
Common stock, par value	$0.00	$0.00
Common stock, shares authorized	114,500,000	114,500,000
Common stock, shares issued	41,925,855	40,897,583
Common stock, shares outstanding	41,925,855	40,897,583

Condensed_Consolidated_Stateme

Condensed Consolidated Statements of Operations (USD $)	3 Months Ended
In Thousands, except Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Support subscription and professional services revenue:
Support subscription (including contra-support subscription revenue of $0 and $1,961 for the impact of the issuance of equity to an affiliate of AT&T for the three months ended March 31, 2015 and 2014)	$13,575	$4,289
Professional services (including contra-professional services revenue of $0 and $79 for the impact of the issuance of equity to an affiliate of AT&T for the three months ended March 31, 2015 and 2014)	9,198	4,248
Total support subscription and professional services revenue (including $2,317 and $373 for the periods ended March 31, 2015 and 2014, from related parties)	22,773	8,537
Cost of revenue:
Support subscription	2,549	589
Professional services	8,911	5,311
Total cost of revenue	11,460	5,900
Gross profit	11,313	2,637
Operating expenses:
Sales and marketing	27,757	10,193
Research and development	14,980	7,793
General and administrative	9,052	4,933
Total operating expenses	51,789	22,919
Loss from operations	-40,476	-20,282
Other income, net	426	30
Loss before income tax expense	-40,050	-20,252
Income tax expense	84	21
Net loss	($40,134)	($20,273)
Net loss per share of common stock, basic and diluted	($0.97)	($5.25)
Weighted-average shares used in computing net loss per share of common stock, basic and diluted	41,479,563	3,857,948

Condensed_Consolidated_Stateme1

Condensed Consolidated Statements of Operations (Parenthetical) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Income Statement [Abstract]
Contra-support subscription revenue	$0	$1,961
Contra-professional services revenue	0	79
Support subscription and professional services revenue from related parties	$2,317	$373

Condensed_Consolidated_Stateme2

Condensed Consolidated Statements of Comprehensive Loss (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Statement of Comprehensive Income [Abstract]
Net loss	($40,134)	($20,273)
Items of other comprehensive (loss) income:
Unrealized gain on investments	30	2
Foreign currency translation adjustment	-148	2
Total other comprehensive (loss) income	-118	4
Total comprehensive loss	($40,252)	($20,269)

Condensed_Consolidated_Stateme3

Condensed Consolidated Statements of Cash Flows (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
CASH FLOWS FROM OPERATING ACTIVITIES:
Net loss	($40,134)	($20,273)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation	894	225
Amortization of premiums from investments	282	67
Stock-based compensation expense	5,194	2,148
Contra-revenue adjustment related to share purchase agreement with related party		2,040
Loss on disposal of assets	5	25
Changes in operating assets and liabilities:
Accounts receivable	-1,607	-795
Prepaid expenses and other current assets	-2,895	-1,099
Other non-current assets	-390	-5
Accounts payable	-447	-382
Accrued liabilities and other long-term liabilities	4,577	2,331
Accrued compensation and benefits	464	-234
Deferred revenue	5,328	3,563
Net cash used in operating activities	-28,729	-12,389
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of investments	-42,057
Proceeds from maturities of investments	27,861	2,920
Issuance of promissory note receivable	-2,500
Change in restricted cash	31
Purchases of property and equipment	-5,263	-379
Net cash (used in) provided by investing activities	-21,928	2,541
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from sale of preferred stock, net of issuance costs		99,742
Proceeds from issuance of common stock	313	96
Net cash provided by financing activities	313	99,838
NET (DECREASE) INCREASE IN CASH AND CASH EQUIVALENTS	-50,344	89,990
CASH AND CASH EQUIVALENTS-Beginning of period	129,084	25,304
CASH AND CASH EQUIVALENTS-End of period	78,740	115,294
SUPPLEMENTAL DISCLOSURES OF NON-CASH INVESTING AND FINANCING INFORMATION:
Purchases of property and equipment included in accounts payable and accrued liabilities	$1,350

Description_of_Business_and_Su

Description of Business and Summary of Significant Accounting Policies	3 Months Ended
	Mar. 31, 2015
Accounting Policies [Abstract]
Description of Business and Summary of Significant Accounting Policies	1. DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
	Description of Business
	Hortonworks, Inc. (the “Company”) was incorporated in Delaware in 2011 and is the leading contributor to and provider of Apache™ Hadoop® for the enterprise. Our mission is to establish Hadoop as the foundational technology of the modern enterprise data architecture. Our solution, the Hortonworks Data Platform (“HDP”) is an enterprise-grade data management platform that enables a centralized architecture for running batch, interactive and real-time applications simultaneously across shared datasets. HDP is built on Hadoop and supported by a comprehensive set of capabilities that address the core requirements of security, operations and data governance.
	The Company is focused on the development, distribution and support of the Hadoop open source project from the Apache Software Foundation (“Apache Hadoop” or “Hadoop”). Hadoop was originally developed in the early 2000s, when Yahoo!, Inc. (“Yahoo!”), by partnering with the Apache Hadoop community, led major innovations in the technology to help tackle big data challenges and operate its business at scale. Hadoop is managed as an open source software project by the Apache Software Foundation.
	Due to the increase in the volume and the variety of data, including new unstructured data types such as clickstream data, geo-location data, sensor and machine data, sentiment data, server log data and other data generated by emails, documents and other file types, Hadoop has emerged as a critical enabling technology for the modern data center architecture. The Company’s software development efforts are thus focused on creating an enterprise-grade Hadoop platform by working in concert with the Apache community to develop the Hortonworks Data Platform.
	In December 2014, the Company completed its initial public offering and concurrent private placement (collectively, the “IPO”) of 7,673,986 shares of common stock (inclusive of 486,486 shares in a concurrent private placement and 937,500 shares of common stock from the full exercise of the over-allotment option granted to the underwriters) at a price of $16.00 per share. The Company received net cash proceeds of $109.6 million from the sale of shares of common stock. Immediately prior to the closing of the IPO, all shares of the Company’s outstanding convertible preferred stock automatically converted into 21,949,525 shares of common stock.
	Basis of Presentation and Consolidation
	The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with generally accepted accounting principles (“GAAP”) in the United States (“U.S.”) and applicable rules and regulations of the Securities and Exchange Commission regarding interim financial reporting. As permitted under those rules, certain footnotes or other financial information that are normally required by U.S. GAAP can be condensed or omitted. These financial statements have been prepared on the same basis as the Company’s annual financial statements and, in the opinion of management, reflect all normal recurring adjustments, except as otherwise disclosed, that are necessary for a fair statement of the Company’s results for the interim periods presented. These interim financial results are not necessarily indicative of results expected for the full fiscal year or for any subsequent interim period.
	The accompanying condensed consolidated financial statements and related financial information should be read in conjunction with the audited financial statements and the related notes thereto contained in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2014.
	The condensed consolidated balance sheet as of December 31, 2014 included herein was derived from the audited financial statements as of that date.
	The condensed consolidated financial statements include the accounts of the Company and its wholly owned subsidiaries. All intercompany transactions and balances have been eliminated in consolidation.
	There have been no changes to the Company’s significant accounting policies described in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2014 that have had a material impact on the Company’s condensed consolidated financial statements and related notes.
	Out-of-Period Adjustment
	During the three months ended March 31, 2015, the Company recorded an out-of-period adjustment related to acquisition retention bonuses from XA Secure. The adjustment was associated with the three quarters ended December 31, 2014 and increased total expense by $3.1 million. The Company evaluated the adjustment considering both quantitative and qualitative factors and concluded the adjustment is not material to previously issued and current period financial statements.
	Use of Estimates
	The preparation of consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities at the date of the consolidated financial statements, and the reported amounts of expenses during the reporting period. The Company bases its estimates and judgments on its historical experience, knowledge of current conditions, and its beliefs on what could occur in the future given available information. Estimates, assumptions and judgments are used for, but are not limited to, revenue recognition, stock-based awards and warrants, accounting for income taxes, allowance for doubtful accounts and certain accrued liabilities.
	Recently Issued Accounting Pronouncements
	In May 2014, the Financial Accounting Standards Board (“FASB”), issued ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606), which requires an entity to recognize the amount of revenue to which it expects to be entitled for the transfer of promised goods or services to customers. The ASU will replace most existing revenue recognition guidance in U.S. GAAP when it becomes effective. The new standard is effective for the Company on January 1, 2017. Early application is not permitted. Certain aspects of ASU 2014-09 are currently under re-deliberation, and in April 2015, the FASB issued an exposure draft proposing a one-year deferral of the effective date of the standard and allowing early adoption as of the original effective date. The standard permits the use of either the retrospective or cumulative effect transition method. The Company is evaluating the effect that ASU 2014-09 will have on its condensed consolidated financial statements and related disclosures. The Company has not yet selected a transition method nor has it determined the effect of the standard on its ongoing financial reporting.

Fair_Value_Measurements

Fair Value Measurements	3 Months Ended
	Mar. 31, 2015
Fair Value Disclosures [Abstract]
Fair Value Measurements	2. FAIR VALUE MEASUREMENTS
	The following table sets forth the fair value of the Company’s financial assets measured on a recurring basis by level within the fair value hierarchy (in thousands):
		March 31, 2015
		Level 1		Level 2		Level 3		Total
	Cash equivalents:
	Money market funds	$	45,040	$	—	$	—	$	45,040
	Certificates of deposit		—		980		—		980
	Commercial paper		—		5,998		—		5,998
	Short-term investments:
	U.S. Treasury bills		3,494		—		—		3,494
	Certificates of deposit		—		5,098		—		5,098
	Commercial paper		—		9,732		—		9,732
	Bank notes		—		3,507		—		3,507
	Corporate notes and bonds		—		65,395		—		65,395
	Long-term investments:
	Corporate notes and bonds		—		2,099		—		2,099
	Total financial assets	$	48,534	$	92,809	$	—	$	141,343
		December 31, 2014
		Level 1		Level 2		Level 3		Total
	Cash equivalents:
	Money market funds	$	119,723	$	—	$	—	$	119,723
	Short-term investments:
	Commercial paper		—		5,298		—		5,298
	Corporate notes and bonds		—		70,083		—		70,083
	Total financial assets	$	119,723	$	75,381	$	—	$	195,104
	Where applicable, the Company uses quoted market prices in active markets for identical assets to determine fair value. This pricing methodology applies to Level 1 investments, which are comprised of money market funds and U.S. Treasury bills.
	If quoted prices in active markets for identical assets are not available, then the Company uses quoted prices for similar assets or inputs other than quoted prices that are observable, either directly or indirectly. These investments are included in Level 2 and consist of commercial paper, bank notes, certificates of deposit, corporate notes and bonds and the promissory note receivable. Bank notes and certificates of deposit are valued using inputs that are directly or indirectly observable in the market, including the readily-available pricing sources for the identical underlying security that may not be actively traded. Corporate notes and bonds are valued at a consensus price, which is a weighted-average price based on market prices from a variety of industry standard data providers used as inputs to a distribution-curve based algorithm. Commercial paper is valued using market prices, if available, adjusting for accretion of the purchase price to face value at maturity. The Company entered into a three-year, $2.5 million promissory note receivable with a third-party service provider in February 2015, which bears interest at 4% per annum. The promissory note receivable is valued on a non-recurring basis using observable inputs and is classified as held-to-maturity within long-term investments. The carrying amounts of accounts receivable, prepaid expenses, the promissory note receivable, accounts payable, accrued liabilities and accrued compensation and benefits approximate fair value.
	A financial instrument’s categorization within the valuation hierarchy is based upon the lowest level of input that is significant to the fair value measurement. The Company’s assessment of the significance of a particular input to the fair value measurement in its entirety requires management to make judgments and consider factors specific to the asset or liability. During the three months ended March 31, 2015, the Company did not make any transfers between Level 1 and Level 2 investments.
	Gross unrealized gains and losses were not material as of March 31, 2015 and December 31, 2014. Realized gains and losses were not material for the three months ended March 31, 2015 and 2014.

Commitments_and_Contingencies

Commitments and Contingencies	3 Months Ended
	Mar. 31, 2015
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	3. COMMITMENTS AND CONTINGENCIES
	The Company has a number of operating lease agreements primarily involving office space and data center equipment. These leases are non-cancelable and expire on various dates through 2020. Lease expense is recognized on a straight-line basis over the lease term. The Company subleases some excess capacity to a subtenant under a non-cancelable operating lease.
	Rent expense incurred under operating leases was $1.7 million and $0.6 million for the three months ended March 31, 2015 and 2014, respectively.
	Legal Proceedings
	In addition, from time to time, the Company is party to various litigation and administrative proceedings relating to claims arising from its operations in the normal course of business. Based on the information presently available, including discussion with legal counsel, management believes that resolution of these matters will not have a material effect on the Company’s business, results of operations, financial condition or cash flows.

Stockholders_Equity

Stockholders' Equity	3 Months Ended
	Mar. 31, 2015
Equity [Abstract]
Stockholders' Equity	4. STOCKHOLDERS’ EQUITY
	Common Stock
	Each share of common stock is entitled to one vote for matters to be voted on by the stockholders of the Company. The holders of common stock are also entitled to receive dividends whenever declared by the Board of Directors from legally available funds, subject to the priority rights of all classes of preferred stock.
	2014 Stock Option and Incentive Plan
	The Company’s 2014 Stock Option and Incentive Plan (the “2014 Plan”) was adopted by the Company’s board of directors in September 2014. The 2014 Plan was approved by the Company’s stockholders in November 2014 and became effective immediately prior to the closing of the Company’s initial public offering. All remaining shares available in the 2011 Stock Option and Grant Plan (the “2011 Plan”) rolled into the 2014 Plan following the consummation of the initial public offering. The 2014 Plan allows the compensation committee to make equity-based incentive awards to the Company’s officers, employees, directors and other key persons (including consultants).
	The Company has initially reserved 6,000,000 shares of the Company’s common stock for the issuance of awards under the 2014 Plan, plus 923,732 shares of the Company’s common stock remaining available for issuance under the Company’s 2011 Plan. The 2014 Plan provides that the number of shares reserved and available for issuance under the plan will automatically increase each January 1, beginning on January 1, 2015, by 5% of the outstanding number of shares of the Company’s common stock on the immediately preceding December 31 or such lesser number of shares as determined by the Company’s compensation committee. This number is subject to adjustment in the event of a stock split, stock dividend or other change in the Company’s capitalization. On January 1, 2015, the shares reserved for issuance increased by 2,136,240 for total shares reserved for issuance under the 2014 Plan of 9,059,972 as of March 31, 2015, of which 8,417,803 remained available for issuance.
	2014 Employee Stock Purchase Plan
	In September 2014, the Company’s board of directors adopted and approved, and in November 2014 the Company’s stockholders adopted and approved, the Employee Stock Purchase Plan, or the ESPP. The ESPP initially reserved and authorized the issuance of up to a total of 2,500,000 shares of common stock to participating employees. The ESPP provides that the number of shares reserved and available for issuance will automatically increase each January 1, beginning on January 1, 2015, by the lesser of (i) 1,000,000 shares of common stock, (ii) 1% of the outstanding number of shares of the Company’s common stock on the immediately preceding December 31, or (iii) such lesser number of shares as determined by the ESPP administrator. This number is subject to adjustment in the event of a stock split, stock dividend or other change in the Company’s capitalization. On January 1, 2015, the shares reserved for issuance increased by 427,248 for total shares reserved for issuance under the ESPP of 2,927,248 as of March 31, 2015.
	Each employee who is a participant in the ESPP may purchase shares by authorizing payroll deductions of up to 10% of his or her base compensation during an offering period. Unless the participating employee has previously withdrawn from the offering, his or her accumulated payroll deductions will be used to purchase shares on the last business day of the offering period at a price equal to 85% of the fair market value of the shares on the first business day or the last business day of the offering period, whichever is lower. Under applicable tax rules, an employee may purchase no more than $25,000 worth of shares of common stock, valued at the start of the purchase period, under the ESPP in any calendar year. Administrative amendments were made to the ESPP in March 2015 in connection with the launch of the first offering period, commenced in March 2015.
	Stock Options
	A summary of activity under the stock option plan and related information for the three months ended March 31, 2015 is presented below:
		Number of			Weighted-			Weighted-		Aggregate
		Shares			Average			Average		Intrinsic
		Underlying			Exercise			Remaining		Value
		Outstanding			Price Per			Contractual Life
		Options			Share			(Years)
										(In thousands)
	Outstanding—December 31, 2014		13,953,894		$	8.04			8.8	$	264,531
	Options granted		268,370		$	22.12
	Options exercised		(395,676	)	$	0.99
	Options cancelled/forfeited		(332,669	)	$	9.39
	Outstanding—March 31, 2015		13,493,919		$	7.87			8.58	$	215,478
	Vested and expected to vest—March 31, 2015		12,580,885		$	7.67			8.54	$	203,385
	Exercisable—March 31, 2015		3,554,035		$	2.49			7.53	$	75,891
	Aggregate intrinsic value represents the difference between the exercise price of the options to purchase common stock and the fair market value of the Company’s common stock. The aggregate intrinsic value of options exercised for the three months ended March 31, 2015 and 2014 was $8.6 million and $0.4 million, respectively.
	Restricted Stock
	A summary of information related to restricted stock for the three months ended March 31, 2015 is presented below:
		Number of			Number of			Weighted-		Aggregate
		Shares issued			Shares issued			Average		Intrinsic
		under the Stock Plans			outside the Stock			Exercise		Value
					Plans			Price Per
								Share
										(In thousands)
	Unvested balance—December 31, 2014		672,865			761,601		$	0.62	$	37,845
	Vested		(210,518	)		(304,400	)	$	0.57
	Canceled/forfeited		—			—			—
	Unvested balance—March 31, 2015		462,347			457,201		$	0.65	$	24,478
	Restricted Stock Units
	A summary of information related to restricted stock units (“RSUs”) for the three months ended March 31, 2015 is presented below:
		Number of			Weighted-
		Shares issued			Average
		under the 2014 Plan			Grant-Date Fair
					Value Per
					Share
	Unvested balance—December 31, 2014		56,250		$	16
	Granted		—			—
	Vested		—			—
	Canceled/forfeited		—			—
	Unvested balance—March 31, 2015		56,250		$	16
	Early Exercise of Stock Options
	The 2011 Plan allowed for the granting of options that may be exercised before the options have vested. Shares issued as a result of early exercise and shares that had not vested are deemed to be restricted stock and are subject to a vesting schedule identical to the vesting schedule of the related restricted stock and options, as well as certain other restrictions. Shares issued as a result of early exercise that have not vested are subject to repurchase by the Company upon termination of the purchaser’s employment or services, at the price paid by the purchaser, and are not deemed to be issued for accounting purposes until those related shares vest. The amounts received in exchange for these shares have been recorded as a liability on the accompanying balance sheets and will be reclassified into common stock and additional paid-in-capital as the shares vest. The Company’s right to repurchase these shares generally lapses 1/48 of the original grant date per month over four years.
	The number of shares of restricted stock and early exercised options to purchase common stock outstanding subject to the Company’s right of repurchase at prices ranging from $0.18 to $14.22 per share as of March 31, 2015 was 1,062,129. The liability for shares subject to repurchase as of March 31, 2015 was $1.8 million, of which $1.0 million is included in accrued liabilities and $0.8 million is included in other long-term liabilities.
	Stock-based Compensation Expense
	Total stock-based compensation expense, including stock-based compensation expense to non-employees, by category was as follows (in thousands):
		Three Months Ended
		March 31,
		2015			2014
	Cost of revenue	$	270		$	73
	Sales and marketing		1,417			178
	Research and development		2,123			274
	General and administrative		1,384			1,623
	Total stock-based compensation expense	$	5,194		$	2,148

Common_Stock_Warrants

Common Stock Warrants	3 Months Ended
	Mar. 31, 2015
Text Block [Abstract]
Common Stock Warrants	5. COMMON STOCK WARRANTS
	In July 2011, the Company issued a warrant to purchase 6,500,000 shares of Series A preferred stock at an exercise price of $0.005 per share. Upon consummation of the Company’s initial public offering, the warrant automatically converted into a warrant to purchase 3,250,000 shares of common stock. The warrant was issued to Yahoo! in connection with the Company’s Series A financing and the transactions contemplated thereby, including commercial agreements with Yahoo! providing for support subscription offerings and certain rights to technology. The ability for Yahoo! to exercise the warrant was subject to the continuation of the commercial agreement for a period of two years, which has been satisfied.
	On June 9, 2014, the Company issued a warrant to purchase a number of shares of common stock up to 1% of the sum of (i) 45,585,496, plus (ii) the number of shares of Series D preferred stock or shares of such stock issuable upon exercise of warrants to purchase such stock (on an as converted to common stock basis) issued or issuable upon exercise of warrants to purchase Series D Preferred Stock that were sold, if any, by the Company during the period commencing on June 9, 2014 and ending immediately prior to the occurrence of a corporate event at an exercise price of $8.46 per share. The warrant was issued to Yahoo! in exchange for the amendment of the rights held by Yahoo! under Section 2.11 of the Investors’ Rights Agreement to approve an acquisition of Hortonworks, which removed a competitor of Yahoo! from the list of companies over which Yahoo! has such blocking rights. As of March 31, 2015, the warrant was exercisable into 476,368 shares of common stock.
	Each warrant expires nine years from the date of issuance. The warrants vested upon the consummation of the Company’s initial public offering in December 2014. As of March 31, 2015, neither warrant had been exercised into shares of common stock.

Net_Loss_Per_Share_of_Common_S

Net Loss Per Share of Common Stock	3 Months Ended
	Mar. 31, 2015
Earnings Per Share [Abstract]
Net Loss Per Share of Common Stock	6. NET LOSS PER SHARE OF COMMON STOCK
	Basic net loss per share is calculated by dividing net loss by the weighted-average number of common shares outstanding during the period, less restricted common stock and common stock issued that is subject to repurchase, and excludes any dilutive effects of share based awards. Diluted net loss per share of common stock is computed giving effect to all potential dilutive common shares, including common stock issuable upon exercise of stock options, and unvested restricted common stock. As the Company had net losses for the three months ended March 31, 2015 and 2014, all potential common shares were determined to be anti-dilutive.
	The following table sets forth the computation of basic and diluted net loss per share (in thousands, except share and per share amounts):
		Three Months Ended
		March 31,
		2015			2014
	Net loss	$	(40,134	)	$	(20,273	)
	Weighted-average shares used in computing net loss per share of common stock		41,479,563			3,857,948
	Net loss per share, basic and diluted	$	(0.97	)	$	(5.25	)
	The following outstanding shares of common stock equivalents were excluded from the computation of diluted net loss per share of common stock for the periods presented since including them would have been anti-dilutive:
		Three Months Ended
		March 31,
		2015			2014
	Convertible preferred stock (on an as if converted basis)		—			19,898,176
	Exercise and conversion of convertible preferred stock warrants (converted into common stock warrants upon initial public offering)		3,250,000			3,250,000
	Exercise and conversion of common stock warrants		476,368			—
	Restricted common stock issued, net of repurchases		—			8,432,490
	Common stock subject to repurchase		275,087			196,666
	Stock options to purchase common stock		13,493,919			8,098,739
	Unvested restricted stock and restricted stock units		975,798			—
	Total		18,471,172			39,876,071
	Immediately prior to the closing of the Company’s IPO in December 2014, all shares of the Company’s outstanding convertible preferred stock automatically converted into shares of common stock.

Income_Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2015
Income Tax Disclosure [Abstract]
Income Taxes	7. INCOME TAXES
	The effective tax rate for the three months ended March 31, 2015 was (0.2)% compared to (0.1)% for the same period in 2014. The income tax expense for the three months ended March 31, 2015 and 2014 was determined based upon estimates of the Company’s effective income tax rates in various jurisdictions. The difference between the consolidated effective income tax rate and the U.S. federal statutory rate is primarily attributable to full valuation allowance against net deferred tax assets.

Segment_and_Geographical_Infor

Segment and Geographical Information	3 Months Ended
	Mar. 31, 2015
Segment Reporting [Abstract]
Segment and Geographical Information	8. SEGMENT AND GEOGRAPHICAL INFORMATION
	The Company’s chief operating decision maker reviews financial information on an aggregated and consolidated basis for the purposes of allocating resources and evaluating financial performance. The Company’s chief operating decision maker has direct reports who are responsible for various functions within the Company (e.g. business strategy, finance, legal, business development, products, etc.) on a consolidated basis. There are no segment managers who are held accountable for operations or operating results. The Company’s growth strategy is predicated upon the growth of the support subscription business, and the Company’s key business metrics reflect this strategy. Professional services are offered with the overall goal of securing and retaining support subscription customers and growing support subscription revenue. Accordingly, management has determined that the Company operates in one reportable segment.
	The Company has international sales offices in the Netherlands, United Kingdom, Germany, South Korea and India. The following presents revenue by country, determined by location of sales office (in thousands):
		Three Months Ended
		March 31,
		2015		2014
	United States	$	20,690	$	8,100
	Rest of world		2,083		437
	Total revenue	$	22,773	$	8,537
	The Company’s long-lived assets are primarily located in the United States and not allocated to any specific region. Therefore, geographic information is presented only for total revenue.

Subsequent_Events

Subsequent Events	3 Months Ended
	Mar. 31, 2015
Subsequent Events [Abstract]
Subsequent Events	9. SUBSEQUENT EVENTS
	Business Combination
	In April 2015, the Company completed the acquisition of SequenceIQ, kft, an open source provider of rapid deployment tools for Hadoop, located in Budapest, Hungary. Under the terms of the agreement, the Company agreed to issue 49,102 restricted stock units and pay approximately $3.7 million in cash at closing with $3.5 million due on subsequent dates. An additional $1.7 million is due upon completion of two product milestones. The Company is in the process of evaluating the business combination accounting considerations, including the consideration transferred and the initial purchase price allocation.
	Microsoft Renewal
	Pursuant to the terms of the three-year support subscription and co-engineering agreement entered into with Microsoft in July 2012, the agreement auto-renewed in May 2015 for one additional year through July 2016.

Description_of_Business_and_Su1

Description of Business and Summary of Significant Accounting Policies (Policies)	3 Months Ended
	Mar. 31, 2015
Accounting Policies [Abstract]
Basis of Presentation and Consolidation	Basis of Presentation and Consolidation
	The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with generally accepted accounting principles (“GAAP”) in the United States (“U.S.”) and applicable rules and regulations of the Securities and Exchange Commission regarding interim financial reporting. As permitted under those rules, certain footnotes or other financial information that are normally required by U.S. GAAP can be condensed or omitted. These financial statements have been prepared on the same basis as the Company’s annual financial statements and, in the opinion of management, reflect all normal recurring adjustments, except as otherwise disclosed, that are necessary for a fair statement of the Company’s results for the interim periods presented. These interim financial results are not necessarily indicative of results expected for the full fiscal year or for any subsequent interim period.
	The accompanying condensed consolidated financial statements and related financial information should be read in conjunction with the audited financial statements and the related notes thereto contained in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2014.
	The condensed consolidated balance sheet as of December 31, 2014 included herein was derived from the audited financial statements as of that date.
	The condensed consolidated financial statements include the accounts of the Company and its wholly owned subsidiaries. All intercompany transactions and balances have been eliminated in consolidation.
	There have been no changes to the Company’s significant accounting policies described in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2014 that have had a material impact on the Company’s condensed consolidated financial statements and related notes.
Out-of-Period Adjustment	Out-of-Period Adjustment
	During the three months ended March 31, 2015, the Company recorded an out-of-period adjustment related to acquisition retention bonuses from XA Secure. The adjustment was associated with the three quarters ended December 31, 2014 and increased total expense by $3.1 million. The Company evaluated the adjustment considering both quantitative and qualitative factors and concluded the adjustment is not material to previously issued and current period financial statements.
Use of Estimates	Use of Estimates
	The preparation of consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities at the date of the consolidated financial statements, and the reported amounts of expenses during the reporting period. The Company bases its estimates and judgments on its historical experience, knowledge of current conditions, and its beliefs on what could occur in the future given available information. Estimates, assumptions and judgments are used for, but are not limited to, revenue recognition, stock-based awards and warrants, accounting for income taxes, allowance for doubtful accounts and certain accrued liabilities.
Recently Issued Accounting Pronouncements	Recently Issued Accounting Pronouncements
	In May 2014, the Financial Accounting Standards Board (“FASB”), issued ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606), which requires an entity to recognize the amount of revenue to which it expects to be entitled for the transfer of promised goods or services to customers. The ASU will replace most existing revenue recognition guidance in U.S. GAAP when it becomes effective. The new standard is effective for the Company on January 1, 2017. Early application is not permitted. Certain aspects of ASU 2014-09 are currently under re-deliberation, and in April 2015, the FASB issued an exposure draft proposing a one-year deferral of the effective date of the standard and allowing early adoption as of the original effective date. The standard permits the use of either the retrospective or cumulative effect transition method. The Company is evaluating the effect that ASU 2014-09 will have on its condensed consolidated financial statements and related disclosures. The Company has not yet selected a transition method nor has it determined the effect of the standard on its ongoing financial reporting.

Fair_Value_Measurements_Tables

Fair Value Measurements (Tables)	3 Months Ended
	Mar. 31, 2015
Fair Value Disclosures [Abstract]
Financial Assets Measured on Recurring Basis by Level within Fair Value Hierarchy	The following table sets forth the fair value of the Company’s financial assets measured on a recurring basis by level within the fair value hierarchy (in thousands):
		March 31, 2015
		Level 1		Level 2		Level 3		Total
	Cash equivalents:
	Money market funds	$	45,040	$	—	$	—	$	45,040
	Certificates of deposit		—		980		—		980
	Commercial paper		—		5,998		—		5,998
	Short-term investments:
	U.S. Treasury bills		3,494		—		—		3,494
	Certificates of deposit		—		5,098		—		5,098
	Commercial paper		—		9,732		—		9,732
	Bank notes		—		3,507		—		3,507
	Corporate notes and bonds		—		65,395		—		65,395
	Long-term investments:
	Corporate notes and bonds		—		2,099		—		2,099
	Total financial assets	$	48,534	$	92,809	$	—	$	141,343
		December 31, 2014
		Level 1		Level 2		Level 3		Total
	Cash equivalents:
	Money market funds	$	119,723	$	—	$	—	$	119,723
	Short-term investments:
	Commercial paper		—		5,298		—		5,298
	Corporate notes and bonds		—		70,083		—		70,083
	Total financial assets	$	119,723	$	75,381	$	—	$	195,104

Stockholders_Equity_Tables

Stockholders' Equity (Tables)	3 Months Ended
	Mar. 31, 2015
Summary of Activity Under Stock Option Plan and Related Information	A summary of activity under the stock option plan and related information for the three months ended March 31, 2015 is presented below:
		Number of			Weighted-			Weighted-		Aggregate
		Shares			Average			Average		Intrinsic
		Underlying			Exercise			Remaining		Value
		Outstanding			Price Per			Contractual Life
		Options			Share			(Years)
										(In thousands)
	Outstanding—December 31, 2014		13,953,894		$	8.04			8.8	$	264,531
	Options granted		268,370		$	22.12
	Options exercised		(395,676	)	$	0.99
	Options cancelled/forfeited		(332,669	)	$	9.39
	Outstanding—March 31, 2015		13,493,919		$	7.87			8.58	$	215,478
	Vested and expected to vest—March 31, 2015		12,580,885		$	7.67			8.54	$	203,385
	Exercisable—March 31, 2015		3,554,035		$	2.49			7.53	$	75,891
Schedule of Stock-Based Compensation Expense	Total stock-based compensation expense, including stock-based compensation expense to non-employees, by category was as follows (in thousands):
		Three Months Ended
		March 31,
		2015			2014
	Cost of revenue	$	270		$	73
	Sales and marketing		1,417			178
	Research and development		2,123			274
	General and administrative		1,384			1,623
	Total stock-based compensation expense	$	5,194		$	2,148
Restricted Stock [Member]
Summary of Information Related to Restricted Stock and Restricted Stock Units ("RSUs")	A summary of information related to restricted stock for the three months ended March 31, 2015 is presented below:
		Number of			Number of			Weighted-		Aggregate
		Shares issued			Shares issued			Average		Intrinsic
		under the Stock Plans			outside the Stock			Exercise		Value
					Plans			Price Per
								Share
										(In thousands)
	Unvested balance—December 31, 2014		672,865			761,601		$	0.62	$	37,845
	Vested		(210,518	)		(304,400	)	$	0.57
	Canceled/forfeited		—			—			—
	Unvested balance—March 31, 2015		462,347			457,201		$	0.65	$	24,478
Restricted Stock Units (RSUs) [Member]
Summary of Information Related to Restricted Stock and Restricted Stock Units ("RSUs")	A summary of information related to restricted stock units (“RSUs”) for the three months ended March 31, 2015 is presented below:
		Number of			Weighted-
		Shares issued			Average
		under the 2014 Plan			Grant-Date Fair
					Value Per
					Share
	Unvested balance—December 31, 2014		56,250		$	16
	Granted		—			—
	Vested		—			—
	Canceled/forfeited		—			—
	Unvested balance—March 31, 2015		56,250		$	16

Net_Loss_Per_Share_of_Common_S1

Net Loss Per Share of Common Stock (Tables)	3 Months Ended
	Mar. 31, 2015
Earnings Per Share [Abstract]
Computation of Basic and Diluted Net Loss Per Share	The following table sets forth the computation of basic and diluted net loss per share (in thousands, except share and per share amounts):
		Three Months Ended
		March 31,
		2015			2014
	Net loss	$	(40,134	)	$	(20,273	)
	Weighted-average shares used in computing net loss per share of common stock		41,479,563			3,857,948
	Net loss per share, basic and diluted	$	(0.97	)	$	(5.25	)
Outstanding Shares of Common Stock Equivalents Excluded from Computation of Diluted Net Loss Per Share	The following outstanding shares of common stock equivalents were excluded from the computation of diluted net loss per share of common stock for the periods presented since including them would have been anti-dilutive:
		Three Months Ended
		March 31,
		2015			2014
	Convertible preferred stock (on an as if converted basis)		—			19,898,176
	Exercise and conversion of convertible preferred stock warrants (converted into common stock warrants upon initial public offering)		3,250,000			3,250,000
	Exercise and conversion of common stock warrants		476,368			—
	Restricted common stock issued, net of repurchases		—			8,432,490
	Common stock subject to repurchase		275,087			196,666
	Stock options to purchase common stock		13,493,919			8,098,739
	Unvested restricted stock and restricted stock units		975,798			—
	Total		18,471,172			39,876,071

Segment_and_Geographical_Infor1

Segment and Geographical Information (Tables)	3 Months Ended
	Mar. 31, 2015
Segment Reporting [Abstract]
Revenue by Country Determined by Location of Sales	The Company has international sales offices in the Netherlands, United Kingdom, Germany, South Korea and India. The following presents revenue by country, determined by location of sales office (in thousands):
		Three Months Ended
		March 31,
		2015		2014
	United States	$	20,690	$	8,100
	Rest of world		2,083		437
	Total revenue	$	22,773	$	8,537

Description_of_Business_and_Su2

Description of Business and Summary of Significant Accounting Policies - Additional Information (Detail) (USD $)	1 Months Ended	3 Months Ended
In Millions, except Share data, unless otherwise specified	Dec. 31, 2014	Mar. 31, 2015
Class of Stock [Line Items]
Net cash proceeds from initial public offering	$109.60
Out-of-period adjustments, increase in total expense		$3.10
Out-of-Period Adjustment Description		During the three months ended March 31, 2015, the Company recorded an out-of-period adjustment related to acquisition retention bonuses from XA Secure. The adjustment was associated with the three quarters ended December 31, 2014 and increased total expense by $3.1 million. The Company evaluated the adjustment considering both quantitative and qualitative factors and concluded the adjustment is not material to previously issued and current period financial statements.
IPO [Member]
Class of Stock [Line Items]
Common stock shares issued	7,673,986
Common stock price per share	$16
Private placement [Member]
Class of Stock [Line Items]
Common stock shares issued	486,486
Over-allotment option [Member]
Class of Stock [Line Items]
Common stock shares issued	937,500
Common stock [Member]
Class of Stock [Line Items]
Number of shares issued on conversion of convertible preferred stock	21,949,525

Fair_Value_Measurements_Financ

Fair Value Measurements - Financial Assets Measured on Recurring Basis by Level within Fair Value Hierarchy (Detail) (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]
Short-term investments	$87,226	$75,381
Long-term investments	4,615
Total financial assets	141,343	195,104
Money Market Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	45,040	119,723
Certificates of Deposit [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	980
Short-term investments	5,098
Commercial Paper [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	5,998
Short-term investments	9,732	5,298
US Treasury Bills [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments	3,494
Bank Notes [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments	3,507
Corporate Notes and Bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments	65,395	70,083
Long-term investments	2,099
Fair Value, Measurements, Recurring [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total financial assets	48,534	119,723
Fair Value, Measurements, Recurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total financial assets	92,809	75,381
Fair Value, Measurements, Recurring [Member] | Money Market Funds [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	45,040	119,723
Fair Value, Measurements, Recurring [Member] | Certificates of Deposit [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	980
Short-term investments	5,098
Fair Value, Measurements, Recurring [Member] | Commercial Paper [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	5,998
Short-term investments	9,732	5,298
Fair Value, Measurements, Recurring [Member] | US Treasury Bills [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments	3,494
Fair Value, Measurements, Recurring [Member] | Bank Notes [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments	3,507
Fair Value, Measurements, Recurring [Member] | Corporate Notes and Bonds [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments	65,395	70,083
Long-term investments	$2,099

Fair_Value_Measurements_Additi

Fair Value Measurements - Additional Information (Detail) (USD $)	1 Months Ended
	Feb. 28, 2015	Mar. 31, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments fair value, transfers from level 1 to level 2		$0
Investments fair value, transfers from level 2 to level 1		0
Promissory note receivable [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notes receivable	$2,500,000
Notes receivable interest rate	4.00%
Promissory note receivable term	3 years

Commitments_and_Contingencies_

Commitments and Contingencies - Additional Information (Detail) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Commitments and Contingencies Disclosure [Abstract]
Rent expense incurred under operating leases	$1.70	$0.60

Stockholders_Equity_Additional

Stockholders' Equity - Additional Information (Detail) (USD $)	3 Months Ended		0 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Jan. 01, 2015	Dec. 31, 2014	Nov. 30, 2014
	Vote
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock voting description	Each share of common stock is entitled to one vote for matters to be voted on by the stockholders of the Company.
Number of votes for each share of common stock	1
Aggregate intrinsic value of options exercised	$8,600,000	$400,000
Number of shares outstanding	13,493,919			13,953,894
Liability for shares subject to repurchase	1,800,000
2014 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares reserved and authorized	9,059,972				6,000,000
Shares available for issuance	8,417,803
Percentage of increase in shares reserved and available for issuance	5.00%
Increase in shares reserved and authorized for issuance			2,136,240
2011 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for issuance					923,732
Shares repurchase percentage on original grant date shares	2.08%
Shares repurchase period	4 years
ESPP [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares reserved and authorized	2,927,248				2,500,000
Increase in shares reserved and authorized for issuance			427,248
Maximum percentage of shares allowed to purchase for each employee on base compensation	10.00%
Percentage of share purchase price on fair market value	85.00%
Maximum worth of common stock shares allowed to purchase per employee	25,000
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares outstanding	1,062,129
Accrued liabilities [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Liability for shares subject to repurchase	1,000,000
Other long-term liabilities [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Liability for shares subject to repurchase	$800,000
Maximum [Member] | ESPP [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Increase in shares reserved and authorized for issuance	1,000,000
Maximum [Member] | Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Repurchase price per share	$14.22
Minimum [Member] | ESPP [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of increase in shares reserved and available for issuance	1.00%
Minimum [Member] | Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Repurchase price per share	$0.18

Stockholders_Equity_Summary_of

Stockholders' Equity - Summary of Activity Under Stock Option Plan and Related Information (Detail) (USD $)	3 Months Ended	12 Months Ended
In Thousands, except Share data, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Options Outstanding, Number of Shares Underlying Outstanding Options, beginning balance	13,953,894
Options Outstanding, Number of Shares Underlying Outstanding Options, Options granted	268,370
Options Outstanding, Number of Shares Underlying Outstanding Options, Options exercised	-395,676
Options Outstanding, Number of Shares Underlying Outstanding Options, Options cancelled/forfeited	-332,669
Options Outstanding, Number of Shares Underlying Outstanding Options, ending balance	13,493,919	13,953,894
Options Outstanding, Number of Shares Underlying Outstanding Options, Vested and expected to vest, March 31, 2015	12,580,885
Options Outstanding, Number of Shares Underlying Outstanding Options, Exercisable, March 31, 2015	3,554,035
Options Outstanding, Weighted-Average Exercise Price, beginning balance	$8.04
Options Outstanding, Weighted-Average Exercise Price, Options granted	$22.12
Options Outstanding, Weighted-Average Exercise Price, Options exercised	$0.99
Options Outstanding, Weighted-Average Exercise Price, Options cancelled/forfeited	$9.39
Options Outstanding, Weighted-Average Exercise Price, ending balance	$7.87	$8.04
Options Outstanding, Weighted-Average Exercise Price, Vested and expected to vest, March 31, 2015	$7.67
Options Outstanding, Weighted-Average Exercise Price, Exercisable , March 31, 2015	$2.49
Options Outstanding, Weighted-Average Remaining Contractual Life (Years)	8 years 6 months 29 days	8 years 9 months 18 days
Options Outstanding, Weighted-Average Remaining Contractual Life (Years), Vested and expected to vest, March 31, 2015	8 years 6 months 15 days
Options Outstanding, Weighted-Average Remaining Contractual Life (Years), Exercisable, March 31, 2015	7 years 6 months 11 days
Options Outstanding, Aggregate Intrinsic Value, beginning balance	$264,531
Options Outstanding, Aggregate Intrinsic Value, ending Balance	215,478	264,531
Options Outstanding, Aggregate Intrinsic Value, Vested, March 31, 2015	203,385
Options Outstanding, Aggregate Intrinsic Value, Exercisable, March 31, 2015	$75,891

Stockholders_Equity_Summary_of1

Stockholders' Equity - Summary of Information Related to Restricted Stock (Detail) (Restricted Stock [Member], USD $)	3 Months Ended
In Thousands, except Share data, unless otherwise specified	Mar. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted Average Exercise Price, Unvested beginning balance	$0.62
Weighted Average Exercise Price, Vested	$0.57
Weighted Average Exercise Price, Canceled/forfeited	$0
Weighted Average Exercise Price, Unvested ending balance	$0.65
Aggregate Intrinsic Value, Unvested beginning balance	$37,845
Aggregate Intrinsic Value, Vested	0
Aggregate Intrinsic Value, Unvested ending balance	$24,478
Outside Stock Plans [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Shares issued, Unvested beginning balance	761,601
Number of Shares issued, Vested	-304,400
Number of Shares issued, Cancelled/forfeited	0
Number of Shares issued, Unvested ending balance	457,201
Under Stock Plans [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Shares issued, Unvested beginning balance	672,865
Number of Shares issued, Vested	-210,518
Number of Shares issued, Cancelled/forfeited	0
Number of Shares issued, Unvested ending balance	462,347

Stockholders_Equity_Summary_of2

Stockholders' Equity - Summary of Information Related to Restricted Stock Units ("RSUs") (Detail) (Restricted Stock Units (RSUs) [Member], USD $)	3 Months Ended
	Mar. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted Average Exercise Price, Unvested beginning balance	$16
Weighted Average Exercise Price, Granted	$0
Weighted Average Exercise Price, Vested	$0
Weighted Average Exercise Price, Canceled/forfeited	$0
Weighted Average Exercise Price, Unvested ending balance	$16
Under 2014 Plans [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Shares issued, Unvested beginning balance	56,250
Number of Shares issued, Granted	0
Number of Shares issued, Vested	0
Number of Shares issued, Cancelled/forfeited	0
Number of Shares issued, Unvested ending balance	56,250

Stockholders_Equity_Schedule_o

Stockholders' Equity - Schedule of Stock-Based Compensation Expense (Detail) (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	$5,194	$2,148
Cost of revenue [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total stock-based compensation expense	270	73
Sales and marketing [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total stock-based compensation expense	1,417	178
Research and development [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total stock-based compensation expense	2,123	274
General and administrative [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total stock-based compensation expense	$1,384	$1,623

Common_Stock_Warrants_Addition

Common Stock Warrants - Additional Information (Detail) (USD $)	3 Months Ended	1 Months Ended
	Mar. 31, 2015	Jul. 31, 2011	Jul. 09, 2014
Class of Warrant or Right [Line Items]
Warrant expiration period	9 years
Original Warrant [Member] | Series A preferred stock [Member]
Class of Warrant or Right [Line Items]
Number of shares into which the warrant may be converted		6,500,000
Common stock warrants, exercise price per share		0.005
Amended Warrant [Member]
Class of Warrant or Right [Line Items]
Commercial agreement period		2 years
Amended Warrant [Member] | Common stock [Member]
Class of Warrant or Right [Line Items]
Number of shares into which the warrant may be converted	3,250,000
Class Of Warrant Three [Member]
Class of Warrant or Right [Line Items]
Class of warrant, description	On June 9, 2014, the Company issued a warrant to purchase a number of shares of common stock up to 1% of the sum of (i) 45,585,496, plus (ii) the number of shares of Series D preferred stock or shares of such stock issuable upon exercise of warrants to purchase such stock (on an as converted to common stock basis) issued or issuable upon exercise of warrants to purchase Series D Preferred Stock that were sold, if any, by the Company during the period commencing on June 9, 2014 and ending immediately prior to the occurrence of a corporate event at an exercise price of $8.46 per share.
Percentage of shares for determining the number of common shares into which the warrant may be converted			1.00%
Number of shares identified as a component for the calculation of common shares into which the warrant may be converted			45,585,496
Class Of Warrant Three [Member] | Common stock [Member]
Class of Warrant or Right [Line Items]
Number of shares into which the warrant may be converted	476,368
Common stock warrants, exercise price per share			8.46

Net_Loss_Per_Share_of_Common_S2

Net Loss Per Share of Common Stock - Computation of Basic and Diluted Net Loss Per Share (Detail) (USD $)	3 Months Ended
In Thousands, except Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Earnings Per Share [Abstract]
Net loss	($40,134)	($20,273)
Weighted-average shares used in computing net loss per share of common stock	41,479,563	3,857,948
Net loss per share, basic and diluted	($0.97)	($5.25)

Net_Loss_Per_Share_of_Common_S3

Net Loss Per Share of Common Stock - Outstanding Shares of Common Stock Equivalents Excluded from Computation of Diluted Net Loss Per Share (Detail)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of diluted net loss per share of common stock	18,471,172	39,876,071
Exercise and conversion of convertible preferred stock warrants (converted into common stock warrants upon initial public offering) [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of diluted net loss per share of common stock	3,250,000	3,250,000
Exercise and conversion of common stock warrants [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of diluted net loss per share of common stock	476,368
Restricted common stock issued, net of repurchases [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of diluted net loss per share of common stock		8,432,490
Common stock subject to repurchase [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of diluted net loss per share of common stock	275,087	196,666
Stock options to purchase common stock [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of diluted net loss per share of common stock	13,493,919	8,098,739
Unvested restricted stock and restricted stock units [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of diluted net loss per share of common stock	975,798
Convertible preferred stock (on an as if converted basis) [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of diluted net loss per share of common stock		19,898,176

Income_Taxes_Additional_Inform

Income Taxes - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Income Tax Disclosure [Abstract]
Effective income tax rate	-0.20%	-0.10%

Segment_and_Geographical_Infor2

Segment and Geographical Information - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2015
	Segment
Segment Reporting [Abstract]
Number of reportable segment	1

Segment_and_Geographical_Infor3

Segment and Geographical Information - Revenue by Country Determined by Location of Sales (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenue	$22,773	$8,537
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenue	20,690	8,100
Rest of world [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenue	$2,083	$437

Subsequent_Events_Additional_I

Subsequent Events - Additional Information (Detail) (USD $)	1 Months Ended
In Millions, except Share data, unless otherwise specified	Jul. 31, 2012	31-May-15	Apr. 30, 2015
			Milestone
Microsoft [Member]
Subsequent Event [Line Items]
Support subscription and co-engineering agreement term	3 years
Microsoft [Member] | Subsequent Event [Member]
Subsequent Event [Line Items]
Support subscription and co-engineering agreement renewal period		1 year
Support subscription and co-engineering agreement expiration period		2016-07
SequenceIQ [Member] | Subsequent Event [Member]
Subsequent Event [Line Items]
Business combination, cash consideration			$3.70
Number of product milestones			2
SequenceIQ [Member] | Subsequent Event [Member] | Restricted Stock Units (RSUs) [Member]
Subsequent Event [Line Items]
Business combination, restricted stock units issued as consideration			49,102
SequenceIQ [Member] | Subsequent Event [Member] | April 30, 2016 and October 31, 2016 [Member]
Subsequent Event [Line Items]
Business combination, cash consideration			3.5
SequenceIQ [Member] | Upon Completion Of Two Product Milestones [Member] | Subsequent Event [Member]
Subsequent Event [Line Items]
Business combination, cash consideration			$1.70