Cornerstone OnDemand (CSOD) 10-Q 6 May 16 2016 Q1 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2016	May. 02, 2016
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2016
Document Fiscal Year Focus	2,016
Document Fiscal Period Focus	Q1
Trading Symbol	CSOD
Entity Registrant Name	CORNERSTONE ONDEMAND INC
Entity Central Index Key	1,401,680
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		55,077,724

Consolidated Balance Sheets (un

Consolidated Balance Sheets (unaudited) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Assets
Cash and cash equivalents	$ 94,527	$ 107,691
Short-term investments	178,786	136,841
Accounts receivable, net	88,480	104,686
Deferred commissions	33,575	35,910
Prepaid expenses and other current assets	18,863	15,297
Total current assets	414,231	400,425
Capitalized software development costs, net	25,131	23,089
Property and equipment, net	26,766	27,021
Long-term investments	18,706	64,247
Intangible assets, net	14,107	16,713
Goodwill	25,894	25,894
Other assets, net	617	878
Total Assets	525,452	558,267
Liabilities:
Accounts payable	12,825	18,954
Accrued expenses	31,980	44,111
Deferred revenue, current portion	226,177	237,679
Capital lease obligations, current portion	0	33
Other liabilities	2,482	2,663
Total current liabilities	273,464	303,440
Convertible notes, net	231,546	229,305
Other liabilities, non-current	2,822	3,240
Deferred revenue, net of current portion	10,333	14,460
Total liabilities	$ 518,165	$ 550,445
Commitments and contingencies (Note 9)
Stockholders’ Equity:
Common stock, $0.0001 par value; 1,000,000 shares authorized, 54,998 and 54,704 shares issued and outstanding at March 31, 2016 and December 31, 2015, respectively	$ 6	$ 5
Additional paid-in capital	410,947	394,089
Accumulated deficit	(405,125)	(386,882)
Accumulated other comprehensive income	1,459	610
Total stockholders’ equity	7,287	7,822
Total Liabilities and Stockholders’ Equity	$ 525,452	$ 558,267

Consolidated Balance Sheets (u3

Consolidated Balance Sheets (unaudited) (Parenthetical) - $ / shares	Mar. 31, 2016	Dec. 31, 2015
Statement of Financial Position [Abstract]
Common stock, par value (USD per share)	$ 0.0001	$ 0.0001
Common stock, shares authorized (in shares)	1,000,000,000	1,000,000,000
Common stock, shares issued (in shares)	54,998,000	54,704,000
Common stock, shares outstanding (in shares)	54,998,000	54,704,000

Consolidated Statements Of Oper

Consolidated Statements Of Operations (unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Income Statement [Abstract]
Revenue	$ 99,324	$ 73,955
Cost of revenue	31,650	24,662
Gross profit	67,674	49,293
Operating expenses:
Sales and marketing	56,701	45,958
Research and development	11,015	9,767
General and administrative	16,465	11,091
Amortization of certain acquired intangible assets	150	150
Total operating expenses	84,331	66,966
Loss from operations	(16,657)	(17,673)
Other income (expense):
Interest income	346	170
Interest expense	(3,190)	(3,091)
Other, net	1,793	(2,390)
Other income (expense), net	(1,051)	(5,311)
Loss before income tax provision	(17,708)	(22,984)
Income tax provision	(535)	(278)
Net loss	$ (18,243)	$ (23,262)
Net loss per share, basic and diluted (USD per share)	$ (0.33)	$ (0.43)
Weighted average common shares outstanding, basic and diluted (in shares)	54,827	53,876

Consolidated Statements Of Comp

Consolidated Statements Of Comprehensive Loss (unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Statement of Comprehensive Income [Abstract]
Net loss	$ (18,243)	$ (23,262)
Other comprehensive income, net of tax:
Foreign currency translation adjustment	510	301
Net change in unrealized gains on investments	339	68
Other comprehensive income, net of tax	849	369
Total comprehensive loss	$ (17,394)	$ (22,893)

Consolidated Statements Of Cash

Consolidated Statements Of Cash Flows (unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Cash flows from operating activities:
Net loss	$ (18,243)	$ (23,262)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	7,558	6,228
Accretion of debt discount and amortization of debt issuance costs	2,241	2,133
Purchased investment premium, net of amortization	210	(65)
Net foreign currency (gain) loss	(986)	1,887
Stock-based compensation expense	12,996	8,717
Changes in operating assets and liabilities:
Accounts receivable	15,389	21,356
Deferred commissions	1,955	974
Prepaid expenses and other assets	(3,330)	(3,515)
Accounts payable	(6,318)	(2,362)
Accrued expenses	(12,924)	(6,954)
Deferred revenue	(13,191)	(7,104)
Other liabilities	(211)	(683)
Net cash used in operating activities	(14,854)	(2,650)
Cash flows from investing activities:
Purchases of investments	(16,543)	(81,497)
Maturities of investments	20,186	14,497
Purchases of property and equipment	(1,460)	(5,064)
Capitalized software costs	(4,642)	(3,471)
Net cash used in investing activities	(2,459)	(75,535)
Cash flows from financing activities:
Repayment of debt	0	(124)
Principal payments under capital lease obligations	(33)	(95)
Proceeds from employee stock plans	4,084	1,383
Net cash provided by financing activities	4,051	1,164
Effect of exchange rate changes on cash and cash equivalents	98	(2,888)
Net decrease in cash and cash equivalents	(13,164)	(79,909)
Cash and cash equivalents at beginning of period	107,691	166,557
Cash and cash equivalents at end of period	94,527	86,648
Supplemental cash flow information:
Cash paid for interest	1,898	8
Cash paid for income taxes	720	133
Proceeds from employee stock plans received in advance of stock issuance	1,166	752
Non-cash investing and financing activities:
Capitalized assets financed by accounts payable and accrued expenses	1,278	1,076
Capitalized stock-based compensation	$ 944	$ 513

Organization And Summary Of Sig

Organization And Summary Of Significant Accounting Policies	3 Months Ended
	Mar. 31, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization And Summary Of Significant Accounting Policies	ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Company Overview Cornerstone OnDemand, Inc. (“Cornerstone” or the “Company”) was incorporated on May 24, 1999 in the state of Delaware and began its principal operations in November 1999 . The Company is a leading global provider of talent management solutions delivered as Software-as-a-Service (“SaaS”). The Company’s Enterprise and Mid-Market solution is a unified cloud-based platform that addresses critical talent needs throughout the entire employee lifecycle, from recruitment, onboarding, training and collaboration, to performance management, compensation, succession planning and analytics. The Company’s solutions are designed to enable organizations to meet the challenges they face in empowering and maximizing the productivity of their human capital. These challenges include hiring and developing employees throughout their careers, engaging all employees effectively, improving business execution, cultivating future leaders, and integrating with an organization’s extended enterprise of clients, vendors and distributors by delivering training, certification programs and other content. The Company’s management has determined that the Company operates in one segment as it only reports financial information on an aggregate and consolidated basis to the Company’s chief executive officer, who is the Company’s chief operating decision maker. Office Locations The Company is headquartered in Santa Monica, California and has offices in Amsterdam, Auckland, Bangalore, Düsseldorf, Hong Kong, London, Madrid, Mumbai, Munich, New Delhi, Paris, San Francisco, São Paulo, Stockholm, Sunnyvale, Sydney, Tel Aviv, and Tokyo. Basis of Presentation The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with (i) United States generally accepted accounting principles (“GAAP”) for interim financial information and (ii) the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, such financial statements do not include all of the information and footnotes required by GAAP for complete financial statements. In the opinion of management, the financial statements include all adjustments (consisting of normal recurring adjustments) necessary for the fair statement of the interim periods presented. Results for the three months ended March 31, 2016 are not necessarily indicative of the results that may be expected for the year ending December 31, 2016 , for any other interim period or for any other future year. The condensed consolidated balance sheet at December 31, 2015 has been derived from the audited financial statements at that date, but does not include all of the disclosures required by GAAP. The Company’s significant accounting policies are described in “Note 2. Summary of Significant Accounting Policies” in the Company’s Annual Report on Form 10-K for the year ended December 31, 2015 . The Company follows the same accounting policies for interim reporting. The financial information included in this Quarterly Report on Form 10-Q should be read in conjunction with the Company’s consolidated financial statements and related notes thereto included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2015 . Recently Adopted Accounting Pronouncement In April 2015, the FASB issued a new accounting standards update to simplify presentation of debt issuance costs, which requires that debt issuance costs related to a recognized debt liability be presented in the balance sheet as a direct deduction from the carrying amount of that debt liability, consistent with debt discounts. The guidance was effective for reporting periods beginning after December 15, 2015 and interim periods within those fiscal years. The Company adopted this accounting guidance as of March 31, 2016 on a retrospective basis. As a result of the adoption, the Company reclassified unamortized debt issuance costs of $3.0 million and $3.3 million as of March 31, 2016 and December 31, 2015 , respectively, from Other assets, net and reflected them as a reduction in Convertible notes, net on the Condensed Consolidated Balance Sheets. The adoption of this guidance did not have a significant impact on the Company’s results of operations or financial position. Recent Accounting Pronouncements In March 2016, the Financial Accounting Standards Board (“FASB”) issued a new accounting standards update (“ASU”) to simplify several areas of accounting for share-based compensation arrangements, including the income tax impact, classification on the statement of cash flows and forfeitures. The guidance is effective for annual periods beginning after December 15, 2016, and interim periods within those annual periods. The Company is currently evaluating the effects of the adoption of this ASU on its financial statements. In February 2016, the FASB issued a new accounting standards update, which amends a number of aspects of lease accounting, including requiring lessees to recognize operating leases with a term greater than one year on their balance sheet as a right-of-use asset and corresponding lease liability, measured at the present value of the lease payments. The guidance is effective for fiscal years beginning after December 15, 2018, and interim periods within those fiscal years. The Company is currently evaluating the effects of the adoption of this ASU on its financial statements. In January 2016, the FASB issued a new accounting standards update that provides guidance for the recognition, measurement, presentation, and disclosure of financial assets and liabilities. The guidance is effective for fiscal years beginning after December 15, 2017, and interim periods within those fiscal years. The Company is currently evaluating the effects of the adoption of this ASU on its financial statements. In May 2014, the FASB issued a new accounting standards update that provides principles for recognizing revenue for the transfer of promised goods or services to customers with the consideration to which the entity expects to be entitled in exchange for those goods or services. In July 2015, the FASB approved a one-year deferral of the effective date for the new standard. As a result, the guidance will be effective for reporting periods beginning after December 15, 2017. Early adoption is permitted beginning January 1, 2017. The Company is currently evaluating the accounting, transition and disclosure requirements of the standard and cannot currently estimate the financial statement impact of adoption.

Net Loss Per Share

Net Loss Per Share	3 Months Ended
	Mar. 31, 2016
Earnings Per Share [Abstract]
Net Loss Per Share	NET LOSS PER SHARE The following table presents the Company’s basic and diluted net loss per share (in thousands, except per share amounts): Three Months Ended March 31, 2016 2015 Net loss $ (18,243 ) $ (23,262 ) Weighted-average shares of common stock outstanding 54,827 53,876 Net loss per share – basic and diluted $ (0.33 ) $ (0.43 ) At March 31, 2016 and 2015 , the following shares were excluded from the computation of diluted net loss per share because the effect of these shares would have been anti-dilutive (in thousands): March 31, 2016 2015 Options to purchase common stock and restricted stock units 10,504 9,553 Shares issuable pursuant to employee stock purchase plan 81 — Convertible notes 4,682 4,682 Common stock warrants 4,682 4,682 Total shares excluded from net loss per share 19,949 18,917 Under the treasury stock method, the convertible notes and common stock warrants will have a dilutive impact on net earnings per share when the average stock price for the period exceeds the respective conversion prices and the Company has net income attributable to common stockholders. The Company also entered into note hedge transactions (“Note Hedges”) in connection with the convertible notes with respect to its common stock to minimize the impact of potential economic dilution upon conversion of the convertible notes. The Note Hedges were outstanding as of March 31, 2016 . Since the beneficial impact of the Note Hedges was anti-dilutive, they were excluded from the calculation of diluted net income (loss) per share. See Note 6 of the Notes to Condensed Consolidated Financial Statements .

Investments

Investments	3 Months Ended
	Mar. 31, 2016
Investments [Abstract]
Investments	INVESTMENTS Investments in Marketable Securities The Company’s investments in available-for-sale marketable securities are made pursuant to its investment policy, which has established guidelines relative to the diversification of the Company’s investments and their maturities, with the principal objective of capital preservation and maintaining liquidity that is sufficient to meet cash flow requirements. The following is a summary of investments in marketable securities, including cash equivalents, as of March 31, 2016 (in thousands): March 31, 2016 Amortized Cost Basis Unrealized Gains Unrealized Losses Fair Value Money market funds $ 51,963 $ — $ — $ 51,963 Corporate bonds 51,160 38 (19 ) 51,179 Agency bonds 82,377 7 (3 ) 82,381 U.S. treasury securities 57,978 26 (13 ) 57,991 Commercial paper 4,481 — — 4,481 $ 247,959 $ 71 $ (35 ) $ 247,995 The following is a summary of investments in marketable securities, including cash equivalents, as of December 31, 2015 (in thousands): December 31, 2015 Amortized Cost Basis Unrealized Gains Unrealized Losses Fair Value Money market funds $ 61,986 $ — $ — $ 61,986 Corporate bonds 56,205 3 (99 ) 56,109 Agency bonds 85,572 — (111 ) 85,461 U.S. treasury securities 58,004 2 (98 ) 57,908 $ 261,767 $ 5 $ (308 ) $ 261,464 As of March 31, 2016 , the Company’s investment in corporate bonds, agency bonds, U.S. treasury securities and commercial paper had a weighted-average maturity date of approximately six months . Unrealized gains and losses on investments were not significant, and the Company does not believe the unrealized losses represent other-than-temporary impairments as of March 31, 2016 and December 31, 2015 . No marketable securities held have been in a continuous unrealized loss position for more than 12 months as of March 31, 2016 and December 31, 2015 . Strategic Investments In December 2015, the Company invested an aggregate of $0.3 million in equity securities of two privately-held companies. In July 2015, the Company invested $0.2 million in equity securities of a privately-held company, and agreed to invest an additional $0.3 million in equity securities of such privately-held company upon achievement of certain milestones. In May 2015, the Company invested $0.5 million in equity securities of a privately-held company. In September 2014, the Company invested $0.4 million in equity securities of a privately-held company. The Company accounted for each of these investments using the cost method of accounting, as the Company does not have significant influence or a controlling financial interest over these entities. These investments are subject to periodic impairment reviews and are considered to be impaired when a decline in fair value is judged to be other-than-temporary. As of March 31, 2016 , the Company determined there were no impairments of these investments. In June 2014, the Company invested $0.5 million in a debt security of a privately-held company. The Company accounted for this debt security as an available-for-sale security at fair value, which was determined to have no value as of March 31, 2016 .

Intangible Assets

Intangible Assets	3 Months Ended
	Mar. 31, 2016
Goodwill and Intangible Assets Disclosure [Abstract]
Intangible Assets	INTANGIBLE ASSETS The Company has finite-lived intangible assets which are amortized over the estimated useful lives on a straight-line basis. The following table presents the gross carrying amount and accumulated amortization of finite-lived intangible assets as of March 31, 2016 and December 31, 2015 (in thousands): March 31, 2016 December 31, 2015 Gross Carrying Amount Accumulated Amortization Net Carrying Amount Gross Carrying Amount Accumulated Amortization Net Carrying Amount Developed technology $ 29,984 $ (16,151 ) $ 13,833 $ 29,984 $ (13,732 ) $ 16,252 Customer relationships 2,400 (2,392 ) 8 2,400 (2,242 ) 158 Software license rights 1,654 (1,388 ) 266 1,654 (1,351 ) 303 Total $ 34,038 $ (19,931 ) $ 14,107 $ 34,038 $ (17,325 ) $ 16,713 Total amortization expense from finite-lived intangible assets was $2.6 million for the three months ended March 31, 2016 , and $2.6 million for the three months ended March 31, 2015 . Amortization expense of $2.5 million for the three months ended March 31, 2016 , and $2.5 million for the three months ended March 31, 2015 , related to developed technology and software license rights was recorded in cost of revenue and the remainder was recorded in “Amortization of certain acquired intangible assets” in the accompanying Condensed Consolidated Statements of Operations. The following table presents the Company’s estimate of remaining amortization expense for each of the succeeding fiscal years ending December 31 for finite-lived intangible assets that existed at March 31, 2016 (in thousands): 2016 $ 6,676 2017 7,431 Total $ 14,107 Estimated remaining amortization expense of $6.7 million and $7.4 million is expected to be recorded in cost of revenue for 2016 and 2017 , respectively. The remaining estimated amortization expense will be recorded in amortization of certain acquired intangible assets within operating expenses. The Company evaluates the recoverability of its long-lived assets with finite useful lives, including intangible assets, for impairment whenever events or changes in circumstances indicate that the carrying amounts may not be recoverable. Based on the assessment of various factors in connection with the preparation of the Company’s financial statements for the quarter ended March 31, 2016 , the Company does not believe there were any negative qualitative factors impacting the recoverability of the carrying values. There were no impairment charges related to identifiable intangible assets in the three months ended March 31, 2016 and the year ended December 31, 2015 .

Fair Value Of Financial Instrum

Fair Value Of Financial Instruments	3 Months Ended
	Mar. 31, 2016
Fair Value Disclosures [Abstract]
Fair Value Of Financial Instruments	FAIR VALUE OF FINANCIAL INSTRUMENTS Fair value represents the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. Valuation techniques used to measure fair value must maximize the use of observable inputs and minimize the use of unobservable inputs. Observable inputs are based on market data obtained from independent sources. The fair value hierarchy is based on the following three levels of inputs, of which the first two are considered observable and the last one is considered unobservable: • Level 1 – Quoted prices (unadjusted) in active markets for identical assets or liabilities that the Company has the ability to access at the measurement date. • Level 2 – Inputs other than quoted prices included within Level 1 that are observable for the asset or liability, either directly or indirectly. • Level 3 – Unobservable inputs. Assets and liabilities measured at fair value on a recurring basis included the following as of March 31, 2016 and December 31, 2015 (in thousands): March 31, 2016 December 31, 2015 Fair Value Level 1 Level 2 Level 3 Fair Value Level 1 Level 2 Level 3 Cash equivalents $ 51,963 $ 51,963 $ — $ — $ 61,986 $ 61,986 $ — $ — Corporate bonds 51,179 — 51,179 — 56,109 — 56,109 — Agency bonds 82,381 — 82,381 — 85,461 — 85,461 — U.S. treasury securities 57,991 — 57,991 — 57,908 — 57,908 — Commercial paper 4,481 — 4,481 — — — — — Strategic investments — — — — 150 — — 150 $ 247,995 $ 51,963 $ 196,032 $ — $ 261,614 $ 61,986 $ 199,478 $ 150 At March 31, 2016 and December 31, 2015 , cash equivalents of $52.0 million and $62.0 million , respectively, consisted of money market funds with original maturity dates of three months or less backed by U.S. Treasury bills. As of March 31, 2016 , corporate bonds, agency bonds, U.S. treasury securities and commercial paper were classified within Level 2 of the fair value hierarchy. The bonds were valued using information obtained from pricing services, which obtained quoted market prices from a variety of industry data providers, security master files from large financial institutions, and other third-party sources. The Company performed supplemental analysis to validate information obtained from its pricing services. As of March 31, 2016 , no adjustments were made to such pricing information. Strategic Investments The Company’s investments in privately-held companies are shown in the accompanying Condensed Consolidated Balance Sheets in Long-term investments and accompanying Condensed Consolidated Statements of Cash Flows in Purchases of investments. The strategic investments classified as a debt security are considered Level 3 in the fair value hierarchy as they have been valued using significant unobservable inputs or data from various valuation approaches and is measured each reporting period at fair value. The following table presents a reconciliation of the investment in debt securities measured at fair value using significant unobservable inputs (Level 3) as of March 31, 2016 (in thousands): Balance as of December 31, 2015 $ 150 Change in value (150 ) Balance as of March 31, 2016 $ — Senior Convertible Notes The Company’s senior convertible notes are shown in the accompanying Condensed Consolidated Balance Sheets at their original issuance value, net of unamortized discount and debt issuance costs, and are not re-measured to fair value each period. The approximate fair value of the Company’s convertible notes as of March 31, 2016 was $250.4 million . The fair value of the convertible notes was estimated on the basis of quoted market prices, which, due to limited trading activity, are considered Level 2 in the fair value hierarchy.

Debt

Debt	3 Months Ended
	Mar. 31, 2016
Debt Disclosure [Abstract]
Debt	DEBT Senior Convertible Notes In 2013, the Company issued senior convertible notes (the “Notes”) raising gross proceeds of $253.0 million . The Notes are governed by an Indenture, dated June 17, 2013 (the “Indenture”), between the Company and U.S. Bank National Association, as trustee. The Notes mature on July 1, 2018, unless earlier repurchased or converted, and bear interest at a rate of 1.50% per year payable semi-annually in arrears on January 1 and July 1 of each year, commencing January 1, 2014. The Notes are convertible at an initial conversion rate of 18.5046 shares of the Company’s common stock per $1,000 principal amount of the Notes, which represents an initial conversion price of approximately $54.04 per share, subject to adjustment for anti-dilutive issuances, voluntary increases in the conversion rate and make-whole adjustments upon a fundamental change. A fundamental change includes a change in control, delisting of the Company’s common stock and a liquidation of the Company. Upon conversion, the Company will deliver cash for the principal amount, and the Company has the right to settle any amounts in excess of the principal in cash or shares. Prior to April 1, 2018, the Notes are only convertible upon satisfaction of certain conditions as follows: • during any calendar quarter after September 30, 2013, if the last reported sale price of common stock for at least 20 trading days (whether or not consecutive) during a period of 30 consecutive trading days ending on the last trading day of the immediately preceding calendar quarter is greater than or equal to 130% of the conversion price on each applicable trading day; • during the five business day period after any five consecutive trading day period in which the trading price per $1,000 principal amount of the Notes for each trading day of that five consecutive trading day period was less than 98% of the product of the last reported sale price of common stock and the conversion rate on each such trading day; or • upon the occurrence of specified corporate events as defined in the Indenture. Holders of the Notes may convert their Notes at any time on or after April 1, 2018, until the close of business on the second scheduled trading day immediately preceding the maturity date. The holders of the Notes may require the Company to repurchase all or a portion of their Notes at a cash repurchase price equal to 100% of the principal amount of the Notes being repurchased, plus accrued and unpaid interest, upon a fundamental change and events of default, including non-payment of interest or principal and other obligations under the Indenture. In accounting for the Notes at issuance, the Company separated the Notes into debt and equity components pursuant to the accounting standards for convertible debt instruments that may be fully or partially settled in cash upon conversion. The fair value of the debt component was estimated using an interest rate for nonconvertible debt, with terms similar to the Notes, excluding the conversion feature. The carrying amount of the liability component was calculated by measuring the fair value of a similar liability that does not have an associated convertible feature. The excess of the principal amount of the Notes over the fair value of the debt component was recorded as a debt discount and a corresponding increase in additional paid-in capital. The debt discount is accreted to interest expense over the term of the Notes using the interest method. The amount recorded to additional paid-in capital is not to be remeasured as long as it continues to meet the conditions for equity classification. Upon issuance of the $253.0 million of Notes, the Company recorded $214.3 million to debt and $38.7 million to additional paid-in capital for the debt discount. The Company incurred transaction costs of approximately $7.3 million related to the issuance of the Notes. In accounting for these costs, the Company allocated the costs to the debt and equity components in proportion to the allocation of proceeds from the issuance of the Notes to such components. Transaction costs allocated to the debt component of $6.2 million are deferred and amortized to interest expense over the term of the Notes. The transaction costs allocated to the equity component of $1.1 million were recorded to additional paid-in capital. The net carrying amount of the liability component of the Notes as of March 31, 2016 consists of the following (in thousands): Principal amount $ 253,000 Unamortized debt discount (18,487 ) Net carrying amount before unamortized debt issuance costs 234,513 Unamortized debt issuance costs (2,967 ) Net carrying amount $ 231,546 The effective interest rate of the liability component of the Notes is 5.4% . This interest rate was based on the interest rates of similar liabilities at the time of issuance that did not have associated convertible features. The following table presents the interest expense recognized related to the Notes for the three months ended March 31, 2016 and 2015 (in thousands): Three Months Ended March 31, 2016 2015 Contractual interest expense at 1.5% per annum $ 949 $ 949 Amortization of debt issuance costs 310 295 Accretion of debt discount 1,931 1,838 Total $ 3,190 $ 3,082 The net proceeds from the Notes were approximately $246.0 million after payment of the initial purchasers’ offering expenses. The Company used approximately $49.5 million of the net proceeds of the Notes offering to pay the cost of the Note Hedges described below, which was partially offset by $23.2 million of the proceeds from the Company’s sale of the Warrants also described below. Note Hedges Concurrent with the issuance of the Notes, the Company entered into note hedges (the “Note Hedges”) with certain bank counterparties, with respect to its common stock. The Company paid $49.5 million for the Note Hedges. The Note Hedges cover approximately 4.7 million shares of the Company’s common stock at a strike price of $54.04 per share, and are exercisable by the Company upon conversion of the Notes. The Note Hedges will expire upon the maturity of the Notes. The Note Hedges are intended to reduce the potential economic dilution upon conversion of the Notes in the event that the fair value per share of the Company’s common stock at the time of exercise is greater than the conversion price of the Notes. Warrants Separately and concurrently with the entry by the Company into the Note Hedges, the Company entered into warrant transactions, whereby it sold warrants to the same bank counterparties as the Note Hedges to acquire up to 4.7 million shares of the Company’s common stock at a strike price of $80.06 per share (the “Warrants”), subject to anti-dilution adjustments. The Company received proceeds of $23.2 million from the sale of the Warrants. The Warrants expire at various dates during 2018 and 2019. If the fair value per share of the Company’s common stock exceeds the strike price of the Warrants, the Warrants will reduce diluted earnings per share to the extent that the calculation does not have an anti-dilutive effect. The amounts paid and received for the Note Hedges and the Warrants have been recorded in additional paid-in capital. The fair value of the Note Hedges and the Warrants are not remeasured through earnings each reporting period.

Stock-Based Awards

Stock-Based Awards	3 Months Ended
	Mar. 31, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock-Based Awards	STOCK-BASED AWARDS Stock-Based Awards The following table summarizes the Company’s stock option activity for the three months ended March 31, 2016 (in thousands, except per share and term information): Shares Weighted- Average Exercise Price Weighted- Average Remaining Contractual Term Aggregate Intrinsic Value Outstanding, December 31, 2015 7,264 $ 30.75 7.1 $ 63,328 Granted — — Exercised (244 ) 11.94 Forfeited (89 ) 43.10 Outstanding, March 31, 2016 6,931 $ 31.24 6.9 $ 52,092 Shares Weighted- Average Exercise Price Weighted- Average Remaining Contractual Term Aggregate Intrinsic Value Exercisable at March 31, 2016 4,804 $ 26.84 6.3 $ 51,374 Vested and expected to vest at March 31, 2016 6,858 31.14 6.8 52,068 Unrecognized compensation expense relating to stock options was $36.7 million at March 31, 2016 , which is expected to be recognized over a weighted-average period of 2.0 years . Restricted Stock Units The Company granted restricted stock units covering 362,955 shares of its common stock during the three months ended March 31, 2016 . At March 31, 2016 , there were 2,703,396 shares of the Company’s common stock issuable upon the vesting of outstanding restricted stock units. Unrecognized compensation expense related to shares of the Company’s common stock subject to unvested restricted stock units was $71.1 million at March 31, 2016 , which is expected to be recognized as expense over the weighted-average period of 3.1 years . Performance-Based Restricted Stock Units In July 2014, the Company granted performance-based restricted stock units to an executive of the Company. The number of shares of the Company’s common stock issuable upon the vesting of this performance-based restricted stock award is based upon (a) the performance of the Company’s stock price relative to a certain independent market index and (b) the recipient continuing to provide service through the end of the three year term of the award. Achievement of the maximum performance level would result in the issuance of 60,900 shares. The Company used a Monte Carlo simulation to estimate the fair value of this award which factors in the probability of the award vesting. The grant date fair value of the award was $1.8 million , which will be recognized ratably over the three year term of the award. In December 2014, the Compensation Committee of the Company’s Board of Directors approved the issuance of performance-based restricted stock units to certain executives of the Company. The number of shares of the Company’s common stock issuable upon the vesting of these performance-based restricted stock unit awards is based upon (a) the performance of the Company’s stock price relative to a certain independent market index, (b) the achievement of the Company’s revenue guidance for each of fiscal year 2015 and 2016 and (c) the recipient continuing to provide services to the Company through the end of the three year term of the award. The Company finalizes its revenue guidance in February of each year, thus establishing a grant date for the portion of the award related to that year’s revenue guidance. Each tranche is treated as a separate grant and recognized from the date the revenue guidance is determined over the remaining portion of the original three year term of the award. Achievement of the maximum performance level would result in the issuance of an aggregate of 1,070,000 shares. The Company used a Monte Carlo simulation to estimate the fair value of the portion of the awards for which a grant date has been established. The valuation factors in the probability of achieving the performance of the Company’s stock price relative to the market index. The aggregate grant date fair value of the first half of the above awards was $9.9 million , which was subsequently decreased to $5.0 million based on the Company’s performance in relation to the revenue guidance for fiscal year 2015. The maximum level of shares was decreased from an aggregate of 1,070,000 shares to an aggregate of 802,500 shares, representing a decrease from 535,000 shares to 267,500 shares for the first half of the awards and the maximum level achievable of 535,000 shares for the second half of the awards. During the three months ended March 31, 2016 , the Company determined that the aggregate grant date fair value of the second half of the awards was $4.1 million , which will be evaluated each reporting period to determine the Company’s performance in relation to the revenue guidance for fiscal year 2016. The Company recognized compensation expense related to these performance-based awards of $0.9 million for the three months ended March 31, 2016 . Unrecognized compensation expense related to nonvested performance-based restricted stock units was $7.5 million at March 31, 2016 , based on the probable performance target at that date, which is expected to be recognized as expense over the weighted-average period of 1.7 years. Employee Stock Purchase Plan Under the Company’s 2010 Employee Stock Purchase Plan (“ESPP”), eligible employees are granted the right to purchase shares at the lower of 85% of the fair market value of the stock at the time of grant or 85% of the fair market value at the time of exercise. The right to purchase shares is granted twice yearly for six month offering periods in June and December and exercisable on or about the succeeding December and June, respectively, on each year. Stock-Based Compensation Stock-based compensation expense related to stock options, restricted stock units, the ESPP and performance-based restricted stock units is included in the following line items in the accompanying Condensed Consolidated Statement of Operations for the three months ended March 31, 2016 and 2015 (in thousands): Three Months Ended March 31, 2016 2015 Cost of revenue $ 1,092 $ 818 Sales and marketing expense 6,179 4,697 Research and development expense 1,787 1,168 General and administrative expense 3,938 2,034 Total $ 12,996 $ 8,717

Income Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2016
Income Tax Disclosure [Abstract]
Income Taxes	INCOME TAXES The Company’s income tax provision was approximately $0.5 million with an effective income tax rate of (3.0)% for the three months ended March 31, 2016 . The Company’s effective tax rate differs from the statutory rate primarily due to the change in the valuation allowance on the Company’s deferred tax assets and foreign income taxes. As a result of historical losses in the United States, United Kingdom, New Zealand, Hong Kong and Brazil, the Company recorded valuation allowances on the net deferred tax assets of the Company’s United States, United Kingdom, New Zealand, Hong Kong and Brazil deferred tax assets and does not anticipate recording an income tax benefit related to these deferred tax assets. The Company will reassess the realization of deferred tax assets each reporting period and will be able to reduce the valuation allowance to the extent that the financial results of these operations improve and it becomes more likely than not that the deferred tax assets are realizable. The Company is subject to U.S. federal income tax, state income tax and various foreign income taxes. The Company is subject to examination for the 2012 through 2015 tax years for its U.S. federal income tax returns. State income tax returns are subject to examination for the 2011 through 2015 tax years. The Company is subject to examination by various foreign jurisdictions for years after 2007. The Company does not reasonably expect significant changes to its uncertain tax positions within the next twelve months.

Commitments And Contingencies

Commitments And Contingencies	3 Months Ended
	Mar. 31, 2016
Commitments and Contingencies Disclosure [Abstract]
Commitments And Contingencies	COMMITMENTS AND CONTINGENCIES Guarantees and Indemnifications The Company has made guarantees and indemnities under which it may be required to make payments to a guaranteed or indemnified party in relation to certain transactions, including revenue transactions in the ordinary course of business. In connection with certain facility leases, the Company has agreed to indemnify its lessors for certain claims arising from the facility or the lease. The Company is obligated to indemnify its directors and officers to the maximum extent permitted under the laws of the State of Delaware. However, the Company has a directors and officers insurance policy that may reduce its exposure in certain circumstances and may enable it to recover a portion of future amounts that may be payable, if any. The duration of the guarantees and indemnities varies and, in many cases, is indefinite but subject to statutes of limitations. To date, the Company has made no payments related to these guarantees and indemnities. The Company estimates the fair value of its indemnification obligations as insignificant based on this history and the Company’s insurance coverage and therefore has not recorded any liability for these guarantees and indemnities in the accompanying condensed consolidated balance sheets. Lease Commitments During the three months ended March 31, 2016 , the Company entered into various operating lease agreements with obligations of approximately $0.2 million for 2016 and $0.1 million for 2017 . Other Commitments In February 2016, the Company amended an agreement with one of its third-party service providers, whereby the Company committed to provide certain dollar amounts of professional service projects related to implementation and other services for clients of the Company. The amendment increased the contractual commitment amount by $0.5 million in each of 2016 and 2017. Litigation The Company is subject to various legal proceedings and claims that arise in the ordinary course of business. If the Company determines that it is probable that a loss has been incurred and the amount is reasonably estimable, the Company will record a liability. The Company has determined that it does not have a potential liability related to any legal proceedings or claims that would individually or in the aggregate materially adversely affect its financial condition or operating results.

Related Party Transactions

Related Party Transactions	3 Months Ended
	Mar. 31, 2016
Related Party Transactions [Abstract]
Related Party Transactions	RELATED PARTY TRANSACTIONS In 2010, the Cornerstone OnDemand Foundation (the “Foundation”), was formed to empower communities in the United States and internationally by increasing the impact of the non-profit sector through the utilization of talent management technology including the Company’s Enterprise and Mid-Market solution. The Company’s Chief Executive Officer is on the Board of Directors of the Foundation. The Company does not direct the Foundation’s activities, and accordingly, the Company does not consolidate the Foundation’s statement of activities with its financial results. During the three months ended March 31, 2016 and 2015, the Company provided at no charge certain resources to the Foundation, with approximate values of $0.8 million and $0.6 million , respectively. During June 2010, an executive officer of an accounting software company joined the Company’s Board of Directors. During the three months ended March 31, 2016 and 2015 , the Company recorded $0.2 million and $0.2 million , respectively, in expenses related to the use of the accounting software from the company whose executive officer served on the Company’s Board of Directors during those years.

Subsequent Events

Subsequent Events	3 Months Ended
	Mar. 31, 2016
Subsequent Events [Abstract]
Subsequent Events	SUBSEQUENT EVENTS During April 2016, the Company entered into operating leases with commitments of approximately $0.3 million in 2016 and $0.3 million in 2017. During April and May 2016, the Compensation Committee of the Company’s Board of Directors granted restricted stock units covering an aggregate of 304,635 shares of the Company’s common stock which generally vest annually over four years. During May 2016, the Compensation Committee of the Company’s Board of Directors granted stock options to purchase 50,000 shares of the Company's common stock at a weighted average exercise price of $34.35 per share. These stock options vest over four years .

Organization And Summary Of S18

Organization And Summary Of Significant Accounting Policies (Policies)	3 Months Ended
	Mar. 31, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Basis of Presentation The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with (i) United States generally accepted accounting principles (“GAAP”) for interim financial information and (ii) the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, such financial statements do not include all of the information and footnotes required by GAAP for complete financial statements. In the opinion of management, the financial statements include all adjustments (consisting of normal recurring adjustments) necessary for the fair statement of the interim periods presented. Results for the three months ended March 31, 2016 are not necessarily indicative of the results that may be expected for the year ending December 31, 2016 , for any other interim period or for any other future year. The condensed consolidated balance sheet at December 31, 2015 has been derived from the audited financial statements at that date, but does not include all of the disclosures required by GAAP. The Company’s significant accounting policies are described in “Note 2. Summary of Significant Accounting Policies” in the Company’s Annual Report on Form 10-K for the year ended December 31, 2015 . The Company follows the same accounting policies for interim reporting. The financial information included in this Quarterly Report on Form 10-Q should be read in conjunction with the Company’s consolidated financial statements and related notes thereto included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2015 .
Recent Accounting Pronouncements	Recently Adopted Accounting Pronouncement In April 2015, the FASB issued a new accounting standards update to simplify presentation of debt issuance costs, which requires that debt issuance costs related to a recognized debt liability be presented in the balance sheet as a direct deduction from the carrying amount of that debt liability, consistent with debt discounts. The guidance was effective for reporting periods beginning after December 15, 2015 and interim periods within those fiscal years. The Company adopted this accounting guidance as of March 31, 2016 on a retrospective basis. As a result of the adoption, the Company reclassified unamortized debt issuance costs of $3.0 million and $3.3 million as of March 31, 2016 and December 31, 2015 , respectively, from Other assets, net and reflected them as a reduction in Convertible notes, net on the Condensed Consolidated Balance Sheets. The adoption of this guidance did not have a significant impact on the Company’s results of operations or financial position. Recent Accounting Pronouncements In March 2016, the Financial Accounting Standards Board (“FASB”) issued a new accounting standards update (“ASU”) to simplify several areas of accounting for share-based compensation arrangements, including the income tax impact, classification on the statement of cash flows and forfeitures. The guidance is effective for annual periods beginning after December 15, 2016, and interim periods within those annual periods. The Company is currently evaluating the effects of the adoption of this ASU on its financial statements. In February 2016, the FASB issued a new accounting standards update, which amends a number of aspects of lease accounting, including requiring lessees to recognize operating leases with a term greater than one year on their balance sheet as a right-of-use asset and corresponding lease liability, measured at the present value of the lease payments. The guidance is effective for fiscal years beginning after December 15, 2018, and interim periods within those fiscal years. The Company is currently evaluating the effects of the adoption of this ASU on its financial statements. In January 2016, the FASB issued a new accounting standards update that provides guidance for the recognition, measurement, presentation, and disclosure of financial assets and liabilities. The guidance is effective for fiscal years beginning after December 15, 2017, and interim periods within those fiscal years. The Company is currently evaluating the effects of the adoption of this ASU on its financial statements. In May 2014, the FASB issued a new accounting standards update that provides principles for recognizing revenue for the transfer of promised goods or services to customers with the consideration to which the entity expects to be entitled in exchange for those goods or services. In July 2015, the FASB approved a one-year deferral of the effective date for the new standard. As a result, the guidance will be effective for reporting periods beginning after December 15, 2017. Early adoption is permitted beginning January 1, 2017. The Company is currently evaluating the accounting, transition and disclosure requirements of the standard and cannot currently estimate the financial statement impact of adoption.

Net Loss Per Share (Tables)

Net Loss Per Share (Tables)	3 Months Ended
	Mar. 31, 2016
Earnings Per Share [Abstract]
Summary of Basic and Diluted Loss Per Share	The following table presents the Company’s basic and diluted net loss per share (in thousands, except per share amounts): Three Months Ended March 31, 2016 2015 Net loss $ (18,243 ) $ (23,262 ) Weighted-average shares of common stock outstanding 54,827 53,876 Net loss per share – basic and diluted $ (0.33 ) $ (0.43 )
Anti-Dilutive Shares Excluded from Calculation of Diluted Net Loss Per Share	At March 31, 2016 and 2015 , the following shares were excluded from the computation of diluted net loss per share because the effect of these shares would have been anti-dilutive (in thousands): March 31, 2016 2015 Options to purchase common stock and restricted stock units 10,504 9,553 Shares issuable pursuant to employee stock purchase plan 81 — Convertible notes 4,682 4,682 Common stock warrants 4,682 4,682 Total shares excluded from net loss per share 19,949 18,917

Investments (Tables)

Investments (Tables)	3 Months Ended
	Mar. 31, 2016
Investments [Abstract]
Marketable Securities	The following is a summary of investments in marketable securities, including cash equivalents, as of March 31, 2016 (in thousands): March 31, 2016 Amortized Cost Basis Unrealized Gains Unrealized Losses Fair Value Money market funds $ 51,963 $ — $ — $ 51,963 Corporate bonds 51,160 38 (19 ) 51,179 Agency bonds 82,377 7 (3 ) 82,381 U.S. treasury securities 57,978 26 (13 ) 57,991 Commercial paper 4,481 — — 4,481 $ 247,959 $ 71 $ (35 ) $ 247,995 The following is a summary of investments in marketable securities, including cash equivalents, as of December 31, 2015 (in thousands): December 31, 2015 Amortized Cost Basis Unrealized Gains Unrealized Losses Fair Value Money market funds $ 61,986 $ — $ — $ 61,986 Corporate bonds 56,205 3 (99 ) 56,109 Agency bonds 85,572 — (111 ) 85,461 U.S. treasury securities 58,004 2 (98 ) 57,908 $ 261,767 $ 5 $ (308 ) $ 261,464

Intangible Assets (Tables)

Intangible Assets (Tables)	3 Months Ended
	Mar. 31, 2016
Goodwill and Intangible Assets Disclosure [Abstract]
Gross Carrying Value and Accumulated Amortization of Finite-lived Intangible Assets	The following table presents the gross carrying amount and accumulated amortization of finite-lived intangible assets as of March 31, 2016 and December 31, 2015 (in thousands): March 31, 2016 December 31, 2015 Gross Carrying Amount Accumulated Amortization Net Carrying Amount Gross Carrying Amount Accumulated Amortization Net Carrying Amount Developed technology $ 29,984 $ (16,151 ) $ 13,833 $ 29,984 $ (13,732 ) $ 16,252 Customer relationships 2,400 (2,392 ) 8 2,400 (2,242 ) 158 Software license rights 1,654 (1,388 ) 266 1,654 (1,351 ) 303 Total $ 34,038 $ (19,931 ) $ 14,107 $ 34,038 $ (17,325 ) $ 16,713
Estimate Amortization Expense for Finite-Lived Intangible Assets	The following table presents the Company’s estimate of remaining amortization expense for each of the succeeding fiscal years ending December 31 for finite-lived intangible assets that existed at March 31, 2016 (in thousands): 2016 $ 6,676 2017 7,431 Total $ 14,107

Fair Value Of Financial Instr22

Fair Value Of Financial Instruments (Tables)	3 Months Ended
	Mar. 31, 2016
Fair Value Disclosures [Abstract]
Summary of assets and liabilities measured at fair value	Assets and liabilities measured at fair value on a recurring basis included the following as of March 31, 2016 and December 31, 2015 (in thousands): March 31, 2016 December 31, 2015 Fair Value Level 1 Level 2 Level 3 Fair Value Level 1 Level 2 Level 3 Cash equivalents $ 51,963 $ 51,963 $ — $ — $ 61,986 $ 61,986 $ — $ — Corporate bonds 51,179 — 51,179 — 56,109 — 56,109 — Agency bonds 82,381 — 82,381 — 85,461 — 85,461 — U.S. treasury securities 57,991 — 57,991 — 57,908 — 57,908 — Commercial paper 4,481 — 4,481 — — — — — Strategic investments — — — — 150 — — 150 $ 247,995 $ 51,963 $ 196,032 $ — $ 261,614 $ 61,986 $ 199,478 $ 150
Reconciliation of investment in debt securities	The following table presents a reconciliation of the investment in debt securities measured at fair value using significant unobservable inputs (Level 3) as of March 31, 2016 (in thousands): Balance as of December 31, 2015 $ 150 Change in value (150 ) Balance as of March 31, 2016 $ —

Debt (Tables)

Debt (Tables)	3 Months Ended
	Mar. 31, 2016
Debt Disclosure [Abstract]
Summary of net carrying amount of debt	The net carrying amount of the liability component of the Notes as of March 31, 2016 consists of the following (in thousands): Principal amount $ 253,000 Unamortized debt discount (18,487 ) Net carrying amount before unamortized debt issuance costs 234,513 Unamortized debt issuance costs (2,967 ) Net carrying amount $ 231,546
Schedule of interest expense recognized	The following table presents the interest expense recognized related to the Notes for the three months ended March 31, 2016 and 2015 (in thousands): Three Months Ended March 31, 2016 2015 Contractual interest expense at 1.5% per annum $ 949 $ 949 Amortization of debt issuance costs 310 295 Accretion of debt discount 1,931 1,838 Total $ 3,190 $ 3,082

Stock-Based Awards (Tables)

Stock-Based Awards (Tables)	3 Months Ended
	Mar. 31, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Summary of Stock Option Activity	The following table summarizes the Company’s stock option activity for the three months ended March 31, 2016 (in thousands, except per share and term information): Shares Weighted- Average Exercise Price Weighted- Average Remaining Contractual Term Aggregate Intrinsic Value Outstanding, December 31, 2015 7,264 $ 30.75 7.1 $ 63,328 Granted — — Exercised (244 ) 11.94 Forfeited (89 ) 43.10 Outstanding, March 31, 2016 6,931 $ 31.24 6.9 $ 52,092 Shares Weighted- Average Exercise Price Weighted- Average Remaining Contractual Term Aggregate Intrinsic Value Exercisable at March 31, 2016 4,804 $ 26.84 6.3 $ 51,374 Vested and expected to vest at March 31, 2016 6,858 31.14 6.8 52,068
Summary of stock-based compensation expense	Stock-based compensation expense related to stock options, restricted stock units, the ESPP and performance-based restricted stock units is included in the following line items in the accompanying Condensed Consolidated Statement of Operations for the three months ended March 31, 2016 and 2015 (in thousands): Three Months Ended March 31, 2016 2015 Cost of revenue $ 1,092 $ 818 Sales and marketing expense 6,179 4,697 Research and development expense 1,787 1,168 General and administrative expense 3,938 2,034 Total $ 12,996 $ 8,717

Organization And Summary Of S25

Organization And Summary Of Significant Accounting Policies (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Dec. 31, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]
State of incorporation	Delaware
Other Assets | Accounting Standards Update 2015-03
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Debt issuance costs	$ (3)	$ (3.3)
Long-term Debt | Accounting Standards Update 2015-03
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Debt issuance costs	$ 3	$ 3.3

Net Loss Per Share - Basic and

Net Loss Per Share - Basic and Diluted Loss Per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Earnings Per Share [Abstract]
Net loss	$ (18,243)	$ (23,262)
Weighted-average shares of common stock outstanding (in shares)	54,827	53,876
Net loss per share, basic and diluted (USD per share)	$ (0.33)	$ (0.43)

Net Loss Per Share - Anti-dilut

Net Loss Per Share - Anti-dilutive Shares Excluded From Calculation of Diluted Net Loss Per (Detail) - shares shares in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total shares excluded from net loss per share	19,949	18,917
Options to purchase common stock and restricted stock units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total shares excluded from net loss per share	10,504	9,553
Shares issuable pursuant to employee stock purchase plan
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total shares excluded from net loss per share	81	0
Convertible notes
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total shares excluded from net loss per share	4,682	4,682
Common stock warrants | Common Stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total shares excluded from net loss per share	4,682	4,682

Investments - Marketable Securi

Investments - Marketable Securities (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2016USD ($)security	Dec. 31, 2015USD ($)security
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost Basis	$ 247,959	$ 261,767
Unrealized Gains	71	5
Unrealized Losses	(35)	(308)
Fair Value	$ 247,995	$ 261,464
Weighted average maturity (in years)	6 months
Investments in unrealized loss for more than 12 months | security	0	0
Money market funds
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost Basis	$ 51,963	$ 61,986
Unrealized Gains	0	0
Unrealized Losses	0	0
Fair Value	51,963	61,986
Corporate bonds
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost Basis	51,160	56,205
Unrealized Gains	38	3
Unrealized Losses	(19)	(99)
Fair Value	51,179	56,109
Agency bonds
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost Basis	82,377	85,572
Unrealized Gains	7	0
Unrealized Losses	(3)	(111)
Fair Value	82,381	85,461
U.S. treasury securities
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost Basis	57,978	58,004
Unrealized Gains	26	2
Unrealized Losses	(13)	(98)
Fair Value	57,991	$ 57,908
Commercial Paper
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost Basis	4,481
Unrealized Gains	0
Unrealized Losses	0
Fair Value	$ 4,481

Investments - Strategic Investm

Investments - Strategic Investments (Details) - USD ($)	1 Months Ended		3 Months Ended	12 Months Ended
	Dec. 31, 2015	Jul. 31, 2015	Mar. 31, 2016	Dec. 31, 2016	May. 31, 2015	Sep. 30, 2014	Jun. 30, 2014
Net Investment Income [Line Items]
Impairment of investments			$ 0
Equity Securities
Net Investment Income [Line Items]
Investments in privately-held companies	$ 300,000	$ 200,000
Value of other investments in privately-held companies					$ 500,000	$ 400,000
Debt Securities
Net Investment Income [Line Items]
Value of other investments in privately-held companies			$ 0				$ 500,000
Forecast | Equity Securities
Net Investment Income [Line Items]
Investments in privately-held companies				$ 300,000

Intangible Assets - Gross Carry

Intangible Assets - Gross Carrying Amount and Accumulated Amortization of Finite-lived Intangible Assets (Detail) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 34,038	$ 34,038
Accumulated Amortization	(19,931)	(17,325)
Net Carrying Amount	14,107	16,713
Developed technology
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	29,984	29,984
Accumulated Amortization	(16,151)	(13,732)
Net Carrying Amount	13,833	16,252
Customer relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	2,400	2,400
Accumulated Amortization	(2,392)	(2,242)
Net Carrying Amount	8	158
Software license rights
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	1,654	1,654
Accumulated Amortization	(1,388)	(1,351)
Net Carrying Amount	$ 266	$ 303

Intangible Assets - Estimated A

Intangible Assets - Estimated Amortization Expense for Finite-Lived Intangible Assets (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Finite-Lived Intangible Assets [Line Items]
2,016	$ 6,676
2,017	7,431
Net Carrying Amount	14,107		$ 16,713
Estimated remaining amortization expense to be recorded in current year	6,676
Estimated remaining amortization expense to be recorded in two years	7,431
Cost of revenues
Finite-Lived Intangible Assets [Line Items]
Amortization expense	2,500	$ 2,500
2,016	6,700
2,017	7,400
Estimated remaining amortization expense to be recorded in current year	6,700
Estimated remaining amortization expense to be recorded in two years	7,400
Finite-lived Intangible Assets
Finite-Lived Intangible Assets [Line Items]
Amortization expense	$ 2,600	$ 2,600

Intangible Assets - Changes in

Intangible Assets - Changes in Carrying Amount of Goodwill (Detail) - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2016	Dec. 31, 2015
Goodwill and Intangible Assets Disclosure [Abstract]
Asset impairment charges	$ 0	$ 0

Fair Value Of Financial Instr33

Fair Value Of Financial Instruments - Summary of Asset and Liabilities Measured at Fair Value (Detail) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale securities	$ 247,995	$ 261,464
Fair value measurements, recurring
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Cash equivalents	51,963	61,986
Strategic investments	0	150
Assets	247,995	261,614
Fair value measurements, recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Cash equivalents	51,963	61,986
Strategic investments	0	0
Assets	51,963	61,986
Fair value measurements, recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Cash equivalents	0	0
Strategic investments	0	0
Assets	196,032	199,478
Fair value measurements, recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Cash equivalents	0	0
Strategic investments	0	150
Assets	0	150
Corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale securities	51,179	56,109
Corporate bonds | Fair value measurements, recurring
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale securities	51,179	56,109
Corporate bonds | Fair value measurements, recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale securities	0	0
Corporate bonds | Fair value measurements, recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale securities	51,179	56,109
Corporate bonds | Fair value measurements, recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale securities	0	0
Agency bonds
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale securities	82,381	85,461
Agency bonds | Fair value measurements, recurring
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale securities	82,381	85,461
Agency bonds | Fair value measurements, recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale securities	0	0
Agency bonds | Fair value measurements, recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale securities	82,381	85,461
Agency bonds | Fair value measurements, recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale securities	0	0
U.S. treasury securities
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale securities	57,991	57,908
U.S. treasury securities | Fair value measurements, recurring
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale securities	57,991	57,908
U.S. treasury securities | Fair value measurements, recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale securities	0	0
U.S. treasury securities | Fair value measurements, recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale securities	57,991	57,908
U.S. treasury securities | Fair value measurements, recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale securities	0	0
Commercial Paper
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale securities	4,481
Commercial Paper | Fair value measurements, recurring
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale securities	4,481	0
Commercial Paper | Fair value measurements, recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale securities	0	0
Commercial Paper | Fair value measurements, recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale securities	4,481	0
Commercial Paper | Fair value measurements, recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale securities	$ 0	$ 0

Fair Value Of Financial Instr34

Fair Value Of Financial Instruments - Reconciliation of Investment in Debt Securities (Details) - Level 3 - Strategic Investment $ in Thousands	3 Months Ended
	Mar. 31, 2016USD ($)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance at beginning of period	$ 150
Change in value	(150)
Balance at end of period	$ 0

Fair Value Of Financial Instr35

Fair Value Of Financial Instruments - Additional Information (Detail) - USD ($) $ in Millions	Mar. 31, 2016	Dec. 31, 2015
Fair Value Disclosures [Abstract]
Money market fund value	$ 52	$ 62
Fair value of convertible debt	$ 250.4

Debt - Additional Information (

Debt - Additional Information (Detail)	Jun. 17, 2013USD ($)trading_day$ / sharesshares	Mar. 31, 2016USD ($)
Debt Instrument [Line Items]
Payments for note hedges	$ (49,500,000)
Proceeds from warrants issuance	$ 23,200,000
Number of shares covered by the Note Hedge (in shares) | shares	4,700,000
Number of shares that can be acquired by warrants holders (in shares) | shares	4,700,000
Warrant strike price (USD per share) | $ / shares	$ 80.06
Convertible notes
Debt Instrument [Line Items]
Debt gross proceeds	$ 253,000,000
Debt interest rate	1.50%
Initial conversion rate	18.5046
Conversion price (USD per share) | $ / shares	$ 54.04
Convertible senior notes	$ 214,300,000	$ 234,513,000
Amount recorded in additional paid-in capital for the equity portion of the convertible note	(38,700,000)
Transaction costs related to the issuance of the Notes	7,300,000
Deferred debt issuance cost	6,200,000
Equity issuance cost	1,100,000
Effective interest rate		5.40%
Net proceeds from the Notes	$ 246,000,000
Prior to April 1, 2018 | Maximum | Convertible notes
Debt Instrument [Line Items]
Convertible debt, conversion trigger, minimum number of trading days | trading_day	20
Convertible debt, conversion trigger, consecutive trading days	30 days
Convertible debt, conversion trigger, market price vs conversion price	130.00%
Prior to April 1, 2018 | Minimum | Convertible notes
Debt Instrument [Line Items]
Convertible debt, conversion trigger, minimum number of trading days | trading_day	5
Convertible debt, conversion trigger, consecutive trading days	5 days
Convertible debt, conversion trigger, market price vs conversion price	98.00%

Debt - Summary of Net Carrying

Debt - Summary of Net Carrying Amount of Debt (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015	Jun. 17, 2013
Debt Instrument [Line Items]
Net carrying amount	$ 231,546	$ 229,305
Convertible Debt
Debt Instrument [Line Items]
Principal amount	253,000
Unamortized debt discount	(18,487)
Net carrying amount before unamortized debt issuance costs	234,513		$ 214,300
Unamortized debt issuance costs	(2,967)
Net carrying amount	$ 231,546

Debt - Schedule of Interest Exp

Debt - Schedule of Interest Expense Recognized (Details) - Convertible Debt - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Schedule of Debt Cost and Interest Expense Recognized [Line Items]
Contractual interest expense at 1.5% per annum	$ 949	$ 949
Amortization of debt issuance costs	310	295
Accretion of debt discount	1,931	1,838
Total	$ 3,190	$ 3,082

Stock-Based Awards - Stock Opti

Stock-Based Awards - Stock Option Activity (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2016	Dec. 31, 2015
Shares
Beginning balance (in shares)	7,264
Options, Granted (in shares)	0
Options, Exercised (in shares)	(244)
Options, Forfeited (in shares)	(89)
Ending balance (in shares)	6,931	7,264
Weighted- Average Exercise Price
Weighted-average exercise price, outstanding at beginning of period (USD per share)	$ 30.75
Weighted average exercise price, granted (USD per share)	0
Weighted average exercise price, exercised (USD per share)	11.94
Weighted average exercise price, forfeited (USD per share)	43.10
Weighted-average exercise price, outstanding at end of period (USD per share)	$ 31.24	$ 30.75
Additional Disclosures
Weighted-average remaining contractual term, outstanding	6 years 10 months 11 days	7 years 27 days
Aggregate intrinsic value, outstanding	$ 52,092	$ 63,328
Exercisable at end of period (in shares)	4,804
Vested and expected to vest at end of period (in shares)	6,858
Weighted average exercise price, exercisable at end of period (USD per share)	$ 26.84
Weighted average exercise price, vested and expected to vest at end of periodWeighted average exercise price, granted (USD per share) (USD per share)	$ 31.14
Weighted-average remaining contractual term, exercisable	6 years 3 months 6 days
Weighted-average remaining contractual term, vested and expected to vest	6 years 10 months 6 days
Aggregate intrinsic value, exercisable at end of period	$ 51,374
Aggregate intrinsic value, vested and expected to vest at end of period	$ 52,068

Stock-Based Awards - Additional

Stock-Based Awards - Additional Information (Detail) - USD ($) $ in Thousands	1 Months Ended		3 Months Ended		10 Months Ended
	Feb. 28, 2015	Jul. 31, 2014	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Unrecognized compensation expense relating to stock options			$ 36,700
Share based compensation expense			$ 12,996	$ 8,717
Percent purchase price, grant date, ESPP			85.00%
Percent purchase price, exercise date, ESPP			85.00%
Employee Stock Option
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Unrecognized compensation expense, expected recognition weighted average period			1 year 11 months 19 days
Restricted Stock Units (RSUs)
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Unrecognized compensation expense, expected recognition weighted average period			3 years 19 days
Restricted stock units granted (in shares)			362,955
Share of non-vested restricted stock units were outstanding (in shares)			2,703,396
Unrecognized compensation expense related to non-vested restricted stock units			$ 71,100
Performance Based Restricted Stock Units
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Share-based payment award, award vesting period	3 years	3 years
Expected to vest (in shares)	535,000		267,500
Share based payment award, vested in period (in shares)			802,500
Value of restricted stock units granted	$ 9,900	$ 1,800	$ 4,100		$ 5,000
Performance Based Restricted Stock Units | Maximum
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Expected to vest (in shares)	1,070,000	60,900	535,000
Performance Shares
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Unrecognized compensation expense, expected recognition weighted average period			1 year 8 months 16 days
Share based compensation expense			$ 900
Unrecognized compensation expense related to nonvested performance based options and restricted stock units			$ 7,500

Stock-Based Awards - Stock-Base

Stock-Based Awards - Stock-Based Compensation Expense (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Share based compensation expense	$ 12,996	$ 8,717
Cost of revenue
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Share based compensation expense	1,092	818
Sales and marketing expense
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Share based compensation expense	6,179	4,697
Research and development expense
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Share based compensation expense	1,787	1,168
General and administrative expense
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Share based compensation expense	$ 3,938	$ 2,034

Income Taxes (Detail)

Income Taxes (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Income Tax Disclosure [Abstract]
Income tax (benefit) expenses	$ 535	$ 278
Effective income tax rate	(3.00%)

Commitments And Contingencies (

Commitments And Contingencies (Detail) $ in Millions	Mar. 31, 2016USD ($)
Long-term Purchase Commitment [Line Items]
Additional contractual commitment amount due in current year	$ 0.5
Additional contractual commitment amount due in two years	0.5
Building Lease and Other Commitments
Long-term Purchase Commitment [Line Items]
Lease payments due for remainder of the year	0.2
Lease payments due within two years	$ 0.1

Related Party Transactions (Det

Related Party Transactions (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Related Party Transactions [Abstract]
Services provided to related party at no charge	$ 0.8	$ 0.6
Director
Related Party Transaction [Line Items]
Related party expense for accounting software	$ 0.2	$ 0.2

Subsequent Events (Detail)

Subsequent Events (Detail) - USD ($) $ / shares in Units, $ in Millions	May. 05, 2016	May. 05, 2016	Mar. 31, 2016	Apr. 30, 2016
Subsequent Event [Line Items]
Stock options granted (in shares)			0
Weighted average exercise price, granted (USD per share)			$ 0
Restricted Stock Units (RSUs)
Subsequent Event [Line Items]
Restricted stock units granted (in shares)			362,955
Subsequent Event
Subsequent Event [Line Items]
Lease payments due for remainder of the year				$ 0.3
Lease payments due within two years				$ 0.3
Subsequent Event | Restricted Stock Units (RSUs)
Subsequent Event [Line Items]
Restricted stock units granted (in shares)		304,635
Share-based payment award, award vesting period		4 years
Subsequent Event | Employee Stock Option
Subsequent Event [Line Items]
Share-based payment award, award vesting period	4 years
Stock options granted (in shares)	50,000
Weighted average exercise price, granted (USD per share)	$ 34.35