ServiceNow (NOW) 10-Q 6 Aug 15 2015 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares shares in Millions	6 Months Ended
	Jun. 30, 2015	Jul. 31, 2015
Document and Entity Information [Abstract]
Entity Registrant Name	SERVICENOW, INC.
Trading Symbol	NOW
Entity Central Index Key	1,373,715
Document Type	10-Q
Document Period End Date	Jun. 30, 2015
Amendment Flag	false
Document Fiscal Year Focus	2,015
Document Fiscal Period Focus	Q2
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		156.1

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Current assets:
Cash and cash equivalents	$ 325,354	$ 252,455
Available-for-sale Securities, Current	397,170	416,336
Accounts receivable, net	143,206	159,171
Current portion of deferred commissions	44,346	43,232
Prepaid expenses and other current assets	43,998	35,792
Total current assets	954,074	906,986
Deferred commissions, less current portion	28,193	29,453
Long-term investments	333,284	266,772
Property and equipment, net	124,902	104,237
Intangible Assets, Net (Excluding Goodwill)	47,432	54,526
Goodwill	57,412	55,016
Other assets	18,014	8,089
Total assets	1,563,311	1,425,079
Current liabilities:
Accounts payable	20,966	17,829
Accrued expenses and other current liabilities	83,085	79,497
Current portion of deferred revenue	487,582	409,671
Total current liabilities	591,633	506,997
Deferred revenue, less current portion	15,112	12,567
Convertible senior notes, net	459,011	443,764
Other long-term liabilities	34,442	33,076
Total liabilities	1,100,198	996,404
Stockholders’ equity:
Common stock	155	150
Additional paid-in capital	953,831	799,221
Accumulated other comprehensive loss	(12,272)	(12,113)
Accumulated deficit	(478,601)	(358,583)
Total stockholders’ equity	463,113	428,675
Total liabilities and stockholders’ equity	$ 1,563,311	$ 1,425,079

Condensed Consolidated Statemen

Condensed Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Revenues:
Subscription		$ 200,461	$ 132,724	$ 380,368	$ 250,099
Professional services and other		46,255	34,033	78,312	55,748
Total revenues		246,716	166,757	458,680	305,847
Cost of revenues(1):
Subscription	[1]	45,392	33,243	87,836	64,432
Professional services and other	[1]	34,325	25,695	68,780	47,620
Total cost of revenues	[1]	79,717	58,938	156,616	112,052
Gross profit		166,999	107,819	302,064	193,795
Operating expenses(1):
Sales and marketing	[1]	136,574	91,937	246,631	161,353
Research and development	[1]	53,276	35,439	103,124	66,549
General and administrative	[1]	30,384	24,914	59,776	46,545
Total operating expenses	[1]	220,234	152,290	409,531	274,447
Loss from operations		(53,235)	(44,471)	(107,467)	(80,652)
Interest and other expense, net		(7,186)	(5,231)	(10,060)	(11,194)
Loss before provision for income taxes		(60,421)	(49,702)	(117,527)	(91,846)
Provision for income taxes		1,504	661	2,491	1,828
Net loss		$ (61,925)	$ (50,363)	$ (120,018)	$ (93,674)
Earnings Per Share, Basic and Diluted		$ (0.40)	$ (0.35)	$ (0.78)	$ (0.65)
Net loss attributable to common stockholders - basic		$ (61,925)	$ (50,363)	$ (120,018)	$ (93,674)
Net loss attributable to common stockholders - diluted		$ (61,925)	$ (50,363)	$ (120,018)	$ (93,674)
Weighted-average shares used to compute net loss per share - basic and diluted		154,465,367	144,456,675	153,041,433	143,267,181
Other comprehensive income (loss):
Foreign currency translation adjustments		$ 3,720	$ 511	$ (339)	$ 686
Unrealized gain (loss) on investments		(491)	365	281	390
Tax provision		(177)	0	101	0
Other comprehensive income (loss), net of tax		3,406	876	(159)	1,076
Comprehensive loss		$ (58,519)	$ (49,487)	$ (120,177)	$ (92,598)
[1]	Includes stock-based compensation as follows: Three Months Ended June 30, Six Months Ended June 30, 2015 2014 2015 2014Cost of revenues: Subscription$6,067 $3,825 $11,232 $6,901Professional services and other5,771 3,224 10,984 5,616Sales and marketing26,105 12,383 48,679 21,426Research and development17,935 10,452 33,573 18,291General and administrative10,468 7,720 19,952 14,599

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Loss (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Stock-based compensation	$ 66,346	$ 37,604	$ 124,420	$ 66,833
Subscription [Member]
Stock-based compensation	6,067	3,825	11,232	6,901
Professional services and other [Member]
Stock-based compensation	5,771	3,224	10,984	5,616
Sales and marketing [Member]
Stock-based compensation	26,105	12,383	48,679	21,426
Research and development [Member]
Stock-based compensation	17,935	10,452	33,573	18,291
General and administrative [Member]
Stock-based compensation	$ 10,468	$ 7,720	$ 19,952	$ 14,599

Condensed Consolidated Stateme5

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Cash flows from operating activities:
Net loss	$ (120,018)	$ (93,674)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	28,857	16,630
Amortization of premiums on investments	3,612	3,859
Amortization of deferred commissions	31,281	23,635
Amortization of debt discount and issuance cost	15,285	14,283
Stock-based compensation	124,420	66,833
Tax benefit from exercise of stock options	(597)	(617)
Other Operating Activities, Cash Flow Statement	(4,240)	(1,590)
Changes in operating assets and liabilities:
Accounts receivable	11,339	(2,098)
Deferred commissions	(32,832)	(27,966)
Prepaid expenses and other assets	(8,026)	(1,101)
Accounts payable	1,634	10,976
Deferred Revenue	90,557	63,312
Accrued expenses and other liabilities	5,682	(6,206)
Net cash provided by operating activities	146,954	66,276
Cash flows from investing activities:
Purchases of property and equipment	(41,820)	(27,405)
Payments to Acquire Businesses, Net of Cash Acquired	(1,100)	0
Purchases of investments	(331,496)	(241,312)
Sale of investments	138,362	68,893
Maturities of investments	146,660	67,168
Purchase of strategic investments	(10,000)	0
Restricted cash	66	(55)
Net cash used in investing activities	(99,328)	(132,711)
Cash flows from financing activities:
Proceeds from employee stock plans	41,684	28,811
Taxes paid related to net share settlement of equity awards	(12,446)	0
Tax benefit from exercise of stock options	597	617
Net cash provided by financing activities	29,835	29,428
Foreign currency effect on cash and cash equivalents	(4,562)	(21)
Net increase (decrease) in cash and cash equivalents	72,899	(37,028)
Cash and cash equivalents at beginning of period	252,455	366,303
Cash and cash equivalents at end of period	325,354	329,275
Supplemental disclosures of non-cash investing activities:
Property and equipment included in accounts payable, accrued expenses and other liabilities	$ 19,318	$ 12,669

Description of Business

Description of Business	6 Months Ended
	Jun. 30, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Description of Business	Description of the Business ServiceNow is a leading provider of cloud-based solutions that define, structure, manage and automate services across the global enterprise. By applying a service-oriented lens to the activities, tasks and processes that comprise day-to-day work life, we help the modern enterprise operate faster and be more scalable than ever before.

Summary of Significant Accounti

Summary of Significant Accounting Policies	6 Months Ended
	Jun. 30, 2015
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies Basis of Presentation The accompanying unaudited condensed consolidated financial statements and condensed footnotes have been prepared in accordance with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by generally accepted accounting principles for complete financial statements. In the opinion of management, all adjustments (consisting of normal recurring items) considered necessary for fair statement of results for the interim periods presented have been included. The results of operations for the three and six months ended June 30, 2015 are not necessarily indicative of the results to be expected for the year ended December 31, 2015 or for other interim periods or for future years. The condensed consolidated balance sheet as of December 31, 2014 is derived from audited financial statements as of that date, however, it does not include all of the information and footnotes required by accounting principles generally accepted in the United States for complete financial statements. These condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and related notes included in the Company’s Form 10-K for the year ended December 31, 2014 , which was filed with the Securities and Exchange Commission on February 27, 2015. Principles of Consolidation The condensed consolidated financial statements have been prepared in conformity with U.S. generally accepted accounting principles, or GAAP, and include our accounts and the accounts of our wholly-owned subsidiaries. All significant intercompany transactions and balances have been eliminated upon consolidation. Use of Estimates The preparation of consolidated financial statements in conformity with GAAP requires management to make certain estimates and assumptions. These estimates and assumptions affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements, as well as reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. Warranties and Indemnification Our cloud-based service to automate services across the global enterprise is typically warranted to perform in material conformance with specifications. We include service-level commitments to our customers that permit those customers to receive credits in the event we fail to meet those levels. We establish an accrual based on historical credits paid and an evaluation of the performance of our services including an assessment of the impact, if any, of any known service disruptions. Service-level credit accrual charges are recorded against revenue. The service-level credit accrual was not material as of June 30, 2015 and December 31, 2014 . We have also agreed to indemnify our directors and executive officers for costs associated with any fees, expenses, judgments, fines and settlement amounts incurred by any of these persons in any action or proceeding to which any of those persons is, or is threatened to be, made a party by reason of the person’s service as a director or officer, including any action by us, arising out of that person’s services as a director or officer of our company or that person’s services provided to any other company or enterprise at our request. We maintain director and officer insurance coverage that may enable us to recover a portion of any future amounts paid. The fair values of these obligations are not material as of each balance sheet date. Our arrangements include provisions indemnifying customers against intellectual property and other third-party claims. We have not incurred any costs as a result of such indemnifications and have not recorded any liabilities related to such obligations in the consolidated financial statements. Recent Accounting Pronouncements In May 2014, the Financial Accounting Standards Board, or FASB, issued an update to ASC 606 Revenue from Contracts with Customers, or ASC 606, that will supersede virtually all existing revenue guidance. Under this update, an entity is required to recognize revenue upon transfer of promised goods or services to customers, in an amount that reflects the expected consideration received in exchange for those goods or services. As such, an entity will need to use more judgment and make more estimates than under the current guidance. This update should be applied retrospectively either to each prior reporting period presented in the financial statements, or only to the most current reporting period presented in the financial statements with a cumulative effect adjustment recorded in the retained earnings. This update is effective for our interim and annual reporting periods beginning January 1, 2018. Early adoption is permitted for us on January 1, 2017. We are currently evaluating the impact of this update on our consolidated financial statements. In April 2015, the FASB issued ASU 2015-03, Simplifying the Presentation of Debt Issuance Costs. To simplify presentation of debt issuance costs, this new guidance 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. This guidance will become effective for financial statements issued for fiscal years beginning after December 15, 2015 and interim periods within those fiscal years. This ASU is not expected to have a material impact on our consolidated financial statements or disclosures.

Investments

Investments	6 Months Ended
	Jun. 30, 2015
Available-for-sale Securities [Abstract]
Investments	Investments Marketable securities The following is a summary of our available-for-sale investment securities, excluding those securities classified within cash and cash equivalents on the consolidated balance sheets (in thousands): June 30, 2015 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Estimated Fair Value Available-for-sale securities: Commercial paper $ 11,362 $ 6 $ — $ 11,368 Corporate notes and bonds 566,472 54 (688 ) 565,838 Certificates of deposit 41,505 19 (3 ) 41,521 U.S. government agency securities 111,686 44 (3 ) 111,727 Total available-for-sale securities $ 731,025 $ 123 $ (694 ) $ 730,454 December 31, 2014 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Estimated Fair Value Available-for-sale securities: Commercial paper $ 8,195 $ 1 $ — $ 8,196 Corporate notes and bonds 554,421 56 (845 ) 553,632 Certificates of deposit 27,251 8 (2 ) 27,257 U.S. government agency securities 94,093 2 (72 ) 94,023 Total available-for-sale securities $ 683,960 $ 67 $ (919 ) $ 683,108 As of June 30, 2015 , the contractual maturities of our investments did not exceed 24 months . The fair values of available-for-sale investments, by remaining contractual maturity, are as follows (in thousands): June 30, 2015 Due in 1 year or less $ 397,170 Due in 1 year through 2 years 333,284 Total $ 730,454 We had certain available-for-sale securities in a gross unrealized loss position, substantially all of which had been in such position for less than 12 months . There were no impairments considered "other-than-temporary" as it is more likely than not we will hold the securities until maturity or a recovery of the cost basis. The following table shows the fair values and the gross unrealized losses of these available-for-sale securities aggregated by investment types (in thousands): June 30, 2015 December 31, 2014 Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Corporate notes and bonds $ 417,641 $ (688 ) $ 436,140 $ (845 ) Certificates of deposit 9,103 (3 ) 7,999 (2 ) U.S. government agency securities 25,104 (3 ) 80,014 (72 ) Total $ 451,848 $ (694 ) $ 524,153 $ (919 ) Strategic investment During the three months ended June 30, 2015 , we purchased a non-marketable equity investment in a privately-held company. This investment is accounted for under the cost method as we have less than a 20% ownership interest and we do not have the ability to exercise significant influence over the operations of the company. The carrying value of our investment was $10.0 million as of June 30, 2015 which is included in Other assets on the consolidated balance sheets. We monitor this non-marketable equity investment for impairment and will make an appropriate reduction in carrying value if we determine that an impairment charge is required based primarily on the financial condition and near-term prospects of the privately-held company.

Fair Value Measurements

Fair Value Measurements	6 Months Ended
	Jun. 30, 2015
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Fair Value Measurements	Fair Value Measurements The following table presents our fair value hierarchy for our assets measured at fair value on a recurring basis at June 30, 2015 (in thousands): Level 1 Level 2 Total Cash equivalents: Money market funds $ 45,954 $ — $ 45,954 Commercial paper — — — Short-term investments: Commercial paper — 11,367 11,367 Corporate notes and bonds — 312,217 312,217 Certificates of deposit — 32,518 32,518 U.S. government agency securities — 41,068 41,068 Long-term investments: Corporate notes and bonds — 253,621 253,621 Certificates of deposit — 9,004 9,004 U.S. government agency securities — 70,659 70,659 Total $ 45,954 $ 730,454 $ 776,408 The following table presents our fair value hierarchy for our assets measured at fair value on a recurring basis at December 31, 2014 (in thousands): Level 1 Level 2 Total Cash equivalents: Money market funds $ 46,541 $ — $ 46,541 Commercial paper — 4,600 4,600 Short-term investments: Commercial paper — 8,196 8,196 Corporate notes and bonds — 342,864 342,864 Certificates of deposit — 25,258 25,258 U.S. government agency securities — 40,018 40,018 Long-term investments: Corporate notes and bonds — 210,768 210,768 Certificates of deposit — 1,999 1,999 U.S. government agency securities — 54,005 54,005 Total $ 46,541 $ 687,708 $ 734,249 We determine the fair value of our security holdings based on pricing from our service provider and market prices from industry-standard independent data providers. Such market prices may be quoted prices in active markets for identical assets (Level 1 inputs) or pricing determined using inputs other than quoted prices that are observable either directly or indirectly (Level 2 inputs), such as yield curve, volatility factors, credit spreads, default rates, loss severity, current market and contractual prices for the underlying instruments or debt, broker and dealer quotes, as well as other relevant economic measures.

Goodwill and Intangible Assets

Goodwill and Intangible Assets	6 Months Ended
	Jun. 30, 2015
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets	Goodwill and Intangible Assets Goodwill balances are presented below (in thousands): Carrying Amount Balance as of December 31, 2014 $ 55,016 Goodwill acquired 1,442 Foreign currency translation adjustments 954 Balance as of June 30, 2015 $ 57,412 On February 27, 2015, we completed the acquisition of Intreis, Inc., a professional services company with domain expertise in enterprise governance, risk and compliance solutions. Of the $1.6 million in total purchase consideration, $0.2 million is allocated to net tangible assets and $1.4 million is allocated to goodwill, which represents the synergies expected from the workforce integration. The goodwill balance is deductible for U.S. income tax purposes. $0.5 million of the total purchase consideration will be paid one year following the close of the acquisition. The results of operations of Intreis have been included in our consolidated financial statements from the date of purchase. This business combination did not have a material impact on our consolidated financial statements, and therefore pro forma disclosures have not been presented. Intangible assets consist of the following (in thousands): June 30, 2015 Gross Carrying Amount Accumulated Amortization Net Carrying Amount Developed technology $ 58,546 $ (12,079 ) $ 46,467 Backlog 591 (382 ) 209 Other acquisition-related intangible assets 567 (467 ) 100 Acquisition-related intangible assets 59,704 (12,928 ) 46,776 Other intangible assets 1,075 (419 ) 656 Total intangible assets $ 60,779 $ (13,347 ) $ 47,432 December 31, 2014 Gross Carrying Amount Accumulated Amortization Net Carrying Amount Developed technology $ 59,895 $ (6,727 ) $ 53,168 Backlog 588 (184 ) 404 Other acquisition-related intangible assets 597 (398 ) 199 Acquisition-related intangible assets 61,080 (7,309 ) 53,771 Other intangible assets 1,075 (320 ) 755 Total intangible assets $ 62,155 $ (7,629 ) $ 54,526 Amortization expense for intangible assets for the three months ended June 30, 2015 and 2014 was approximately $2.9 million and $0.5 million , respectively, and for the six months ended June 30, 2015 and 2014 was approximately $5.9 million and $0.9 million , respectively.

Property and Equipment

Property and Equipment	6 Months Ended
	Jun. 30, 2015
Property, Plant and Equipment [Abstract]
Property and Equipment	Property and Equipment Property and equipment, net consists of the following (in thousands): June 30, December 31, 2015 2014 Computer equipment and software $ 156,684 $ 128,546 Furniture and fixtures 19,693 18,253 Leasehold improvements 16,993 14,929 Building 6,529 — Construction in progress 7,390 9,762 207,289 171,490 Less: Accumulated depreciation (82,387 ) (67,253 ) Total property and equipment, net $ 124,902 $ 104,237 During the year ended December 31, 2014, we entered into a new lease for office space in Tel Aviv, Israel. We concluded for accounting purposes, that we were considered the owner of the building during the construction period as we were responsible to fund the construction costs related to structural improvements necessary to make the space ready for use. Following completion of construction during the three months ended March 31, 2015, we concluded we retained continuing involvement to preclude de-recognition of the building. As such, we continue to account for the building as owned real estate and record a financing obligation for our obligation to the legal owner. The building is reflected as an asset on our balance sheet through May 31, 2025, the period of intended use, and depreciated on a straight-line basis over a period of approximately 39 years . Rent payments made under this lease will be recorded as interest expense and principal reduction to the financing obligation. Construction in progress consists primarily of leasehold improvements and in-process software development costs. Depreciation expense for the three months ended June 30, 2015 and 2014 was $12.1 million and $8.2 million , respectively, and for the six months ended June 30, 2015 and 2014 was $22.9 million and $15.7 million , respectively.

Accrued Expenses and Other Curr

Accrued Expenses and Other Current Liabilities	6 Months Ended
	Jun. 30, 2015
Disclosure Summary Of Accrued Expenses And Other Current Liabilities [Abstract]
Accrued Expenses and Other Current Liabilities	Accrued Expenses and Other Current Liabilities Accrued expenses and other current liabilities consist of the following (in thousands): June 30, December 31, 2015 2014 Taxes payable $ 6,526 $ 7,625 Bonuses and commissions 23,195 28,228 Accrued compensation 17,103 14,961 Other employee expenses 16,943 16,080 Other 19,318 12,603 Total accrued expenses and other current liabilities $ 83,085 $ 79,497

Convertible Senior Notes (Notes

Convertible Senior Notes (Notes)	6 Months Ended
	Jun. 30, 2015
Convertible Notes Payable [Abstract]
Notes Payable [Text Block]	Convertible Senior Notes In November 2013 , we issued 0% convertible senior notes due November 1, 2018 with an aggregate principal amount of $575 million , or the Notes. The Notes will not bear interest. The Notes mature on November 1, 2018 unless converted or repurchased in accordance with their terms prior to such date. We cannot redeem the Notes prior to maturity. The Notes are unsecured obligations and do not contain any financial covenants or restrictions on the payments of dividends, the incurrence of indebtedness or the issuance or repurchase of securities by us or any of our subsidiaries. Upon conversion, we may choose to pay or deliver, as the case may be, cash, shares of our common stock or a combination of cash and shares of our common stock. We intend to settle the principal amount of the Notes with cash. The Notes are convertible up to 7.8 million shares of our common stock at an initial conversion rate of approximately 13.54 shares of common stock per $1,000 principal amount, which is equal to an initial conversion price of approximately $73.88 per share of common stock, subject to adjustment. Holders of the Notes may convert their Notes at their option at any time prior to the close of business on the business day immediately preceding July 1, 2018 , only under the following circumstances: • during any calendar quarter commencing after the calendar quarter ending on March 31, 2014 (and only during such calendar quarter), if the last reported sale price of the common stock for at least 20 trading days (whether or not consecutive) during the 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, or the measurement period, in which the trading price per $1,000 principal amount of the Notes for each trading day of the measurement period was less than 98% of the product of the last reported sale price of our common stock and the conversion rate on each such trading day; or • upon the occurrence of specified corporate events. On or after July 1, 2018 , a holder may convert all or any portion of its notes at any time prior to the close of business on the second scheduled trading day immediately preceding the maturity date regardless of the foregoing conditions. Upon conversion, we will pay or deliver, as the case may be, cash, shares of our common stock or a combination of cash and shares of our common stock, at our election. The conversion price will be subject to adjustment in some events. Holders of the Notes who convert their notes in connection with certain corporate events that constitute a “make-whole fundamental change” are, under certain circumstances, entitled to an increase in the conversion rate. Additionally, in the event of a corporate event that constitutes a “fundamental change,” holders of the Notes may require us to purchase with cash all or a portion of the Notes upon the occurrence of a fundamental change, at a purchase price equal to 100% of the principal amount of the Notes plus any accrued and unpaid interest. In accounting for the issuance of the Notes, we separated the Notes into liability and equity components. The carrying cost of the liability component was calculated by measuring the fair value of a similar liability that does not have an associated convertible feature. The carrying amount of the equity component representing the conversion option was determined by deducting the fair value of the liability component from the par value of the Notes. The difference between the principal amount of the Notes and the proceeds allocated to the liability component, or the debt discount, is amortized to interest expense using the effective interest method over the term of the Note. The equity component is not remeasured as long as it continues to meet the conditions for equity classification. In accounting for the transaction costs related to the issuance of the Notes, we allocated the total amount incurred to the liability and equity components based on their relative fair values. Transaction costs attributable to the liability component are being amortized to interest expense over the term of the Notes, and transaction costs attributable to the equity component were netted with the equity component of the Notes in stockholders’ equity. The Notes consisted of the following (in thousands): June 30, 2015 December 31, 2014 Liability: Principal $ 575,000 $ 575,000 Less: debt discount, net of amortization (115,989 ) (131,236 ) Net carrying amount $ 459,011 $ 443,764 We consider the fair value of the Notes at June 30, 2015 and December 31, 2014 to be a Level 2 measurement. The estimated fair values of the Notes were $675.1 million and $653.3 million at June 30, 2015 and December 31, 2014 , respectively. The fair value was determined based on the closing trading price per $100 of the Notes on June 30, 2015 . The Notes are not convertible as of June 30, 2015 and December 31, 2014 . As of June 30, 2015 , the remaining life of the Notes is 40 months. The following table sets forth total interest expense recognized related to the Notes (in thousands): Three Months Ended June 30, Six Months Ended June 30, 2015 2014 2015 2014 Amortization of debt issuance cost $ 413 $ 386 $ 820 $ 766 Amortization of debt discount 7,294 6,816 14,465 13,517 Total $ 7,707 $ 7,202 $ 15,285 $ 14,283 Effective interest rate of the liability component 6.5% Note Hedge To minimize the impact of potential economic dilution upon conversion of the Notes, we entered into convertible note hedge transactions, or the Note Hedge, with respect to our common stock concurrent with the issuance of the Notes. The Note Hedge covers approximately 7.8 million shares of our common stock at a strike price per share that corresponds to the initial conversion price of the Notes, subject to adjustment, and is exercisable upon conversion of the Notes. We paid an aggregate amount of $135.8 million for the Note Hedge. The Note Hedge will expire upon maturity of the Notes. The Note Hedge is intended to reduce the potential economic dilution upon conversion of the Notes in the event that the fair value per share of our common stock at the time of exercise is greater than the conversion price of the Notes. The Note Hedge is a separate transaction and is not part of the terms of the Notes. The Note Hedge does not impact earnings per share, as it was entered into to offset any dilution from the Notes. Warrants Separately, we entered into warrant transactions, or the Warrants, whereby we sold warrants to acquire up to 7.8 million shares of our common stock, at a strike price of $107.46 per share, subject to adjustment. We received aggregate proceeds of $84.5 million from the sale of the Warrants. If the average market value per share of our common stock for the reporting period, as measured under the Warrants, exceeds the strike price of the Warrants, the Warrants will have a dilutive effect on our earnings per share. The Warrants are separate transactions and are not remeasured through earnings each reporting period. The Warrants are not part of the Notes or the Note Hedge, and have been accounted for as part of additional paid-in capital.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Loss	6 Months Ended
	Jun. 30, 2015
Statement of Comprehensive Income [Abstract]
Accumulated Other Comprehensive Loss	Accumulated Other Comprehensive Loss The components of accumulated other comprehensive loss, net of tax, consist of the following (in thousands): June 30, December 31, 2015 2014 Foreign currency translation adjustment $ (11,600 ) $ (11,261 ) Net unrealized loss on investments (672 ) (852 ) Accumulated other comprehensive loss $ (12,272 ) $ (12,113 ) Reclassification adjustments out of accumulated other comprehensive loss into net loss were immaterial for all periods presented.

Stockholders' Equity

Stockholders' Equity	6 Months Ended
	Jun. 30, 2015
Disclosure Common Stock Outstanding And Reserved Shares Of Common Stock For Future Issuance [Abstract]
Common Stock	Stockholders' Equity Common Stock We were authorized to issue 600,000,000 shares of common stock as of June 30, 2015 . Holders of our common stock are not entitled to receive dividends unless declared by our board of directors. As of June 30, 2015 , we had 155,367,736 shares of common stock outstanding and had reserved shares of common stock for future issuance as follows: June 30, 2015 Stock option plans: Options outstanding 12,017,564 RSUs 13,079,988 Stock awards available for future grants: 2012 Equity Incentive Plan (1) 17,065,080 2012 Employee Stock Purchase Plan (1) 7,754,674 Total reserved shares of common stock for future issuance 49,917,306 (1) Refer to Note 11 for a description of these plans. During the six months ended June 30, 2015 and 2014 , we issued a total of 6,034,044 shares and 4,825,594 shares, respectively, from stock option exercises, vesting of restricted stock units, or RSUs, and purchases from the employee stock purchase plan, or ESPP.

Stock Awards

Stock Awards	6 Months Ended
	Jun. 30, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock Awards	Stock Awards We have a 2005 Stock Option Plan, or 2005 Plan, which provides for grants of stock awards, including options to purchase shares of common stock, stock purchase rights and RSUs to certain employees, officers, directors and consultants. Our 2012 Equity Incentive Plan, or 2012 Plan, provides for the grant of incentive stock options, nonqualified stock options, stock appreciation rights, RSUs, performance-based stock awards and other forms of equity compensation, or collectively, stock awards. In addition, the 2012 Plan provides for the grant of performance cash awards. Incentive stock options may be granted only to employees. All other awards may be granted to employees, including officers, as well as directors and consultants. The share reserve may increase to the extent outstanding stock options under the 2005 Plan expire or terminate unexercised. The share reserve also automatically increases on January 1 of each year until January 1, 2022, by up to 5% of the total number of shares of common stock outstanding on December 31 of the preceding year as determined by the board of directors. On January 1, 2015 , 7,475,454 shares of common stock were automatically added to the 2012 Plan pursuant to the provision described in the preceding sentence. Our 2012 Employee Stock Purchase Plan, or 2012 ESPP, authorizes the issuance of shares of common stock pursuant to purchase rights granted to our employees. The number of shares of common stock reserved for issuance automatically increases on January 1 of each year until January 1, 2022, by up to 1% of the total number of shares of common stock outstanding on December 31 of the preceding year as determined by the board of directors. The price at which common stock is purchased under the 2012 ESPP is equal to 85% of the fair market value of the common stock on the first or last day of the offering period, whichever is lower. Offering periods are six months long and begin on February 1 and August 1 of each year. On January 1, 2015 , 1,495,090 shares of common stock were automatically added to the 2012 ESPP pursuant to the provision described in the preceding sentence. Stock Options A summary of the stock option activity for the six months ended June 30, 2015 is as follows: Number of Shares Weighted- Average Exercise Price Weighted- Average Remaining Contractual Term (Years) Aggregate Intrinsic Value (in thousands) Outstanding at December 31, 2014 15,897,422 $ 11.96 Granted 156,048 75.34 Exercised (3,875,335 ) 7.41 $ 261,976 Canceled (160,571 ) 22.44 Outstanding at June 30, 2015 12,017,564 $ 14.10 6.47 $ 723,701 Vested and expected to vest as of June 30, 2015 11,914,682 $ 13.82 6.46 $ 720,874 Vested and exercisable as of June 30, 2015 8,983,792 $ 8.20 6.09 $ 593,921 Aggregate intrinsic value represents the difference between the estimated fair value of our common stock and the exercise price of outstanding, in-the-money options. The weighted-average grant date fair value per share of options granted was $33.71 for the six months ended June 30, 2015 . The total fair value of shares vested was $20.5 million for the six months ended June 30, 2015 . As of June 30, 2015 , total unrecognized compensation cost, adjusted for estimated forfeitures, related to unvested stock options was approximately $41.7 million . The weighted-average remaining vesting period of unvested stock options at June 30, 2015 was 2.24 years . RSUs A summary of RSU activity for the six months ended June 30, 2015 is as follows: Number of Shares Weighted Average Grant Date Fair Value (Per Share) Aggregate Fair Value (in thousands) Outstanding at December 31, 2014 9,941,074 $ 51.19 Granted 5,643,680 72.82 Vested (1,888,777 ) 45.08 $ 140,972 Forfeited (615,989 ) 57.35 Non-vested and outstanding at June 30, 2015 13,079,988 $ 61.11 $ 971,974 Expected to vest as of June 30, 2015 11,559,798 $ 859,009 RSUs granted under the 2005 Plan and the 2012 Plan to employees generally vest annually over a four -year period. As of June 30, 2015 , total unrecognized compensation cost, adjusted for estimated forfeitures, related to unvested RSUs was approximately $614.9 million and the weighted-average remaining vesting period was 3.15 years .

Interest and other expense, net

Interest and other expense, net (Notes)	6 Months Ended
	Jun. 30, 2015
Interest and Other Income/(Expense), Net [Abstract]
Other Nonoperating Income and Expense [Text Block]	Interest and other expense, net The components of interest and other expense, net, consist of the following (in thousands): Three Months Ended June 30, Six Months Ended June 30, 2015 2014 2015 2014 Interest expense related to the Notes $ (7,707 ) $ (7,202 ) $ (15,285 ) $ (14,283 ) Interest income 1,074 739 2,022 1,402 Foreign currency exchange gain/(loss) (534 ) 1,230 3,292 1,681 Other (19 ) 2 (89 ) 6 Interest and other expense, net $ (7,186 ) $ (5,231 ) $ (10,060 ) $ (11,194 )

Net Loss Per Share Attributable

Net Loss Per Share Attributable to Common Stockholders	6 Months Ended
	Jun. 30, 2015
Earnings Per Share [Abstract]
Net Loss Per Share Attributable to Common Stockholders	Net Loss Per Share The following table presents the calculation of basic and diluted net loss per share (in thousands, except share and per share data): Three Months Ended June 30, Six Months Ended June 30, 2015 2014 2015 2014 Numerator: Net loss $ (61,925 ) $ (50,363 ) $ (120,018 ) $ (93,674 ) Denominator: Weighted-average shares outstanding—basic and diluted 154,465,367 144,456,675 153,041,433 143,267,181 Net loss per share: Basic $ (0.40 ) $ (0.35 ) $ (0.78 ) $ (0.65 ) Diluted $ (0.40 ) $ (0.35 ) $ (0.78 ) $ (0.65 ) Potentially dilutive securities that are not included in the calculation of diluted net loss per share because doing so would be antidilutive are as follows: June 30, 2015 2014 Common stock options 12,017,564 19,375,640 Restricted stock units 13,079,988 8,353,408 Common stock subject to repurchase 21 45,879 ESPP obligations 196,836 187,649 Convertible senior notes 7,783,023 7,783,023 Warrants related to the issuance of convertible senior notes 7,783,023 7,783,023 Total potentially dilutive securities 40,860,455 43,528,622

Income Taxes

Income Taxes	6 Months Ended
	Jun. 30, 2015
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes We compute our provision for income taxes by applying the estimated annual effective tax rate to year-to-date loss from recurring operations and adjust the provision for discrete tax items recorded in the period. Our effective tax rate for the three and six months ended June 30, 2015 was (2)% , which was lower than the U.S. federal statutory tax rate of 34% . The lower tax rate was primarily attributable to our loss from operations, the foreign tax rate differential, non-deductible expenses arising from stock-based compensation and the tax effects of unrealized gains in investment securities. Our effective tax rate for the three and six months ended June 30, 2014 was (1)% and (2)% , respectively, which was lower than the federal statutory tax rate of 34% . The lower tax rate was primarily attributable to our loss from operations, the foreign tax rate differential, and non-deductible expenses arising from stock-based compensation. We are subject to taxation in the United States and foreign jurisdictions. As of June 30, 2015 , our tax years 2005 to 2014 remain subject to examination in most jurisdictions. We are currently protesting the results of the examination by the U.S. Internal Revenue Service for the June 30, 2011 and December 31, 2011 tax years. There are differing interpretations of tax laws and regulations, and as a result, disputes may arise with tax authorities involving issues of the timing and amount of deductions and allocations of income among various tax jurisdictions. We periodically evaluate our exposures associated with our tax filing positions. We believe that adequate amounts have been reserved for any adjustments that may ultimately result from these examinations, and we do not anticipate a significant impact to our gross unrecognized tax benefits within the next 12 months related to these years. Although the timing of the resolution, settlement, and closure of any audit is highly uncertain, it is reasonably possible that the balance of gross unrecognized tax benefits could significantly change in the next 12 months. However, given the number of years that remain subject to examination, we are unable to estimate the full range of possible adjustments to the balance of gross unrecognized tax benefits.

Commitments and Contingencies

Commitments and Contingencies	6 Months Ended
	Jun. 30, 2015
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Leases We lease facilities for data center capacity and office space under non-cancelable operating lease agreements with various expiration dates. There have been no material changes in our commitments under contractual obligations, as disclosed in our Annual Report on Form 10-K for the year ended December 31, 2014 . Legal Proceedings From time to time, we are party to litigation and other legal proceedings in the ordinary course of business. While the results of any litigation or other legal proceedings are uncertain, management does not believe the ultimate resolution of any pending legal matters is likely to have a material adverse effect on our financial position, results of operations or cash flows, except as discussed below and for those matters for which we have recorded a loss contingency. We accrue for loss contingencies when it is both probable that we will incur the loss and when we can reasonably estimate the amount of the loss or range of loss. Generally, our subscription agreements require us to defend our customers for third-party intellectual property infringement and other claims. Any adverse determination related to intellectual property claims or other litigation could prevent us from offering our services and adversely affect our financial condition and results of operations. On February 6, 2014, Hewlett-Packard Company filed a lawsuit against us in the U.S. District Court for the Northern District of California that alleges that some of our services infringe the claims of eight Hewlett-Packard patents. Hewlett-Packard is seeking unspecified damages and an injunction. We filed an answer to the complaint on March 28, 2014 denying the allegations and asserting various affirmative defenses. The parties are currently conducting discovery. Hewlett-Packard served infringement contentions on July 3, 2014 and November 18, 2014. We served invalidity contentions on January 9, 2015. On March 10, 2015, the court granted our motion for summary judgment, finding that the asserted claims of four of the eight asserted Hewlett-Packard patents are invalid for failing to claim patentable subject matter. A claim construction hearing is scheduled for December 18, 2015. The trial is currently scheduled to begin on May 16, 2016. We have filed petitions challenging the validity of each of the asserted patents with the United States Patent and Trademark Office, including inter partes review petitions of all eight asserted patents and covered business method review petitions of two asserted patents. On September 23, 2014, BMC Software, Inc. filed a lawsuit against us in the U.S. District Court for the Eastern District of Texas that alleges that some of our services willfully infringe the claims of seven BMC patents. BMC is seeking unspecified damages and an injunction. BMC served infringement contentions on January 6, 2015. We served invalidity contentions on March 3, 2015. We filed an answer to the complaint on June 1, 2015 denying the allegations and asserting various affirmative defenses. A claim construction hearing occurred on July 10, 2015. The trial is currently scheduled to begin on March 14, 2016. We have filed petitions challenging the validity of each of the asserted patents with the United States Patent and Trademark Office, including inter partes review petitions of six asserted patents and a covered business method review petition of one asserted patent. We intend to vigorously defend these lawsuits. These litigation matters are still in their early stages and the final outcome, including our liability, if any, with respect to the claims in the lawsuits, is uncertain. If an unfavorable outcome were to occur in either litigation, the impact could be material to our business, financial condition, cash flow or results of operations, depending on the specific circumstances of the outcome. We cannot make a reasonable estimate of the potential loss or range of loss, if any, arising from these matters.

Information about Geographic Ar

Information about Geographic Areas	6 Months Ended
	Jun. 30, 2015
Segments, Geographical Areas [Abstract]
Information about Geographic Areas	Information about Geographic Areas Revenues by geographic area, based on the billing location of the customer, were as follows for the periods presented (in thousands): Three Months Ended June 30, Six Months Ended June 30, 2015 2014 2015 2014 Revenues by geography: North America (1) $ 174,387 $ 114,261 $ 323,033 $ 209,225 EMEA (2) 55,803 42,194 104,333 78,500 Asia Pacific and other 16,526 10,302 31,314 18,122 Total revenues $ 246,716 $ 166,757 $ 458,680 $ 305,847 Long-lived assets by geographic area were as follows (in thousands): June 30, December 31, 2015 2014 Long-lived assets: North America (3) $ 82,417 $ 66,489 EMEA (2) 31,534 27,032 Asia Pacific and other 10,951 10,716 Total long-lived assets $ 124,902 $ 104,237 (1) Revenues attributed to the United States were approximately 95% of North America revenues for the three months ended June 30, 2015 , and 94% for the three months ended June 30, 2014 , the six months ended June 30, 2015 and the six months ended June 30, 2014 . (2) Europe, the Middle East and Africa (3) Long-lived assets attributed to the United States were approximately 98% and 97% of North America long-lived assets as of June 30, 2015 and December 31, 2014 , respectively.

Summary of Significant Accoun22

Summary of Significant Accounting Policies (Policies)	6 Months Ended
	Jun. 30, 2015
Accounting Policies [Abstract]
Basis of Accounting, Policy [Policy Text Block]	Basis of Presentation The accompanying unaudited condensed consolidated financial statements and condensed footnotes have been prepared in accordance with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by generally accepted accounting principles for complete financial statements. In the opinion of management, all adjustments (consisting of normal recurring items) considered necessary for fair statement of results for the interim periods presented have been included. The results of operations for the three and six months ended June 30, 2015 are not necessarily indicative of the results to be expected for the year ended December 31, 2015 or for other interim periods or for future years. The condensed consolidated balance sheet as of December 31, 2014 is derived from audited financial statements as of that date, however, it does not include all of the information and footnotes required by accounting principles generally accepted in the United States for complete financial statements. These condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and related notes included in the Company’s Form 10-K for the year ended December 31, 2014 , which was filed with the Securities and Exchange Commission on February 27, 2015.
Principles of Consolidation	Principles of Consolidation The condensed consolidated financial statements have been prepared in conformity with U.S. generally accepted accounting principles, or GAAP, and include our accounts and the accounts of our wholly-owned subsidiaries. All significant intercompany transactions and balances have been eliminated upon consolidation.
Use of Estimates	Use of Estimates The preparation of consolidated financial statements in conformity with GAAP requires management to make certain estimates and assumptions. These estimates and assumptions affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements, as well as reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.
Warranties and Indemnification	Warranties and Indemnification Our cloud-based service to automate services across the global enterprise is typically warranted to perform in material conformance with specifications. We include service-level commitments to our customers that permit those customers to receive credits in the event we fail to meet those levels. We establish an accrual based on historical credits paid and an evaluation of the performance of our services including an assessment of the impact, if any, of any known service disruptions. Service-level credit accrual charges are recorded against revenue. The service-level credit accrual was not material as of June 30, 2015 and December 31, 2014 . We have also agreed to indemnify our directors and executive officers for costs associated with any fees, expenses, judgments, fines and settlement amounts incurred by any of these persons in any action or proceeding to which any of those persons is, or is threatened to be, made a party by reason of the person’s service as a director or officer, including any action by us, arising out of that person’s services as a director or officer of our company or that person’s services provided to any other company or enterprise at our request. We maintain director and officer insurance coverage that may enable us to recover a portion of any future amounts paid. The fair values of these obligations are not material as of each balance sheet date. Our arrangements include provisions indemnifying customers against intellectual property and other third-party claims. We have not incurred any costs as a result of such indemnifications and have not recorded any liabilities related to such obligations in the consolidated financial statements.
New Accounting Pronouncements, Policy [Policy Text Block]	Recent Accounting Pronouncements In May 2014, the Financial Accounting Standards Board, or FASB, issued an update to ASC 606 Revenue from Contracts with Customers, or ASC 606, that will supersede virtually all existing revenue guidance. Under this update, an entity is required to recognize revenue upon transfer of promised goods or services to customers, in an amount that reflects the expected consideration received in exchange for those goods or services. As such, an entity will need to use more judgment and make more estimates than under the current guidance. This update should be applied retrospectively either to each prior reporting period presented in the financial statements, or only to the most current reporting period presented in the financial statements with a cumulative effect adjustment recorded in the retained earnings. This update is effective for our interim and annual reporting periods beginning January 1, 2018. Early adoption is permitted for us on January 1, 2017. We are currently evaluating the impact of this update on our consolidated financial statements. In April 2015, the FASB issued ASU 2015-03, Simplifying the Presentation of Debt Issuance Costs. To simplify presentation of debt issuance costs, this new guidance 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. This guidance will become effective for financial statements issued for fiscal years beginning after December 15, 2015 and interim periods within those fiscal years. This ASU is not expected to have a material impact on our consolidated financial statements or disclosures.

Investments (Tables)

Investments (Tables)	6 Months Ended
	Jun. 30, 2015
Available-for-sale Securities [Abstract]
Summary of Investments	The following is a summary of our available-for-sale investment securities, excluding those securities classified within cash and cash equivalents on the consolidated balance sheets (in thousands): June 30, 2015 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Estimated Fair Value Available-for-sale securities: Commercial paper $ 11,362 $ 6 $ — $ 11,368 Corporate notes and bonds 566,472 54 (688 ) 565,838 Certificates of deposit 41,505 19 (3 ) 41,521 U.S. government agency securities 111,686 44 (3 ) 111,727 Total available-for-sale securities $ 731,025 $ 123 $ (694 ) $ 730,454 December 31, 2014 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Estimated Fair Value Available-for-sale securities: Commercial paper $ 8,195 $ 1 $ — $ 8,196 Corporate notes and bonds 554,421 56 (845 ) 553,632 Certificates of deposit 27,251 8 (2 ) 27,257 U.S. government agency securities 94,093 2 (72 ) 94,023 Total available-for-sale securities $ 683,960 $ 67 $ (919 ) $ 683,108
Investments Classified by Contractual Maturity Date	The fair values of available-for-sale investments, by remaining contractual maturity, are as follows (in thousands): June 30, 2015 Due in 1 year or less $ 397,170 Due in 1 year through 2 years 333,284 Total $ 730,454
Fair Values and Gross Unrealized Losses of Available-for-Sale Securities Aggregated by Investment Category	The following table shows the fair values and the gross unrealized losses of these available-for-sale securities aggregated by investment types (in thousands): June 30, 2015 December 31, 2014 Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Corporate notes and bonds $ 417,641 $ (688 ) $ 436,140 $ (845 ) Certificates of deposit 9,103 (3 ) 7,999 (2 ) U.S. government agency securities 25,104 (3 ) 80,014 (72 ) Total $ 451,848 $ (694 ) $ 524,153 $ (919 )

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	6 Months Ended
	Jun. 30, 2015
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Assets and Liabilities Measured at Fair Value on Recurring Basis	The following table presents our fair value hierarchy for our assets measured at fair value on a recurring basis at June 30, 2015 (in thousands): Level 1 Level 2 Total Cash equivalents: Money market funds $ 45,954 $ — $ 45,954 Commercial paper — — — Short-term investments: Commercial paper — 11,367 11,367 Corporate notes and bonds — 312,217 312,217 Certificates of deposit — 32,518 32,518 U.S. government agency securities — 41,068 41,068 Long-term investments: Corporate notes and bonds — 253,621 253,621 Certificates of deposit — 9,004 9,004 U.S. government agency securities — 70,659 70,659 Total $ 45,954 $ 730,454 $ 776,408 The following table presents our fair value hierarchy for our assets measured at fair value on a recurring basis at December 31, 2014 (in thousands): Level 1 Level 2 Total Cash equivalents: Money market funds $ 46,541 $ — $ 46,541 Commercial paper — 4,600 4,600 Short-term investments: Commercial paper — 8,196 8,196 Corporate notes and bonds — 342,864 342,864 Certificates of deposit — 25,258 25,258 U.S. government agency securities — 40,018 40,018 Long-term investments: Corporate notes and bonds — 210,768 210,768 Certificates of deposit — 1,999 1,999 U.S. government agency securities — 54,005 54,005 Total $ 46,541 $ 687,708 $ 734,249

Goodwill and Intangible Assets

Goodwill and Intangible Assets (Tables)	6 Months Ended
	Jun. 30, 2015
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Goodwill	Goodwill balances are presented below (in thousands): Carrying Amount Balance as of December 31, 2014 $ 55,016 Goodwill acquired 1,442 Foreign currency translation adjustments 954 Balance as of June 30, 2015 $ 57,412
Schedule of Intangible Assets	Intangible assets consist of the following (in thousands): June 30, 2015 Gross Carrying Amount Accumulated Amortization Net Carrying Amount Developed technology $ 58,546 $ (12,079 ) $ 46,467 Backlog 591 (382 ) 209 Other acquisition-related intangible assets 567 (467 ) 100 Acquisition-related intangible assets 59,704 (12,928 ) 46,776 Other intangible assets 1,075 (419 ) 656 Total intangible assets $ 60,779 $ (13,347 ) $ 47,432 December 31, 2014 Gross Carrying Amount Accumulated Amortization Net Carrying Amount Developed technology $ 59,895 $ (6,727 ) $ 53,168 Backlog 588 (184 ) 404 Other acquisition-related intangible assets 597 (398 ) 199 Acquisition-related intangible assets 61,080 (7,309 ) 53,771 Other intangible assets 1,075 (320 ) 755 Total intangible assets $ 62,155 $ (7,629 ) $ 54,526

Property and Equipment (Tables)

Property and Equipment (Tables)	6 Months Ended
	Jun. 30, 2015
Property, Plant and Equipment [Abstract]
Summary of Property and Equipment, Net	Property and equipment, net consists of the following (in thousands): June 30, December 31, 2015 2014 Computer equipment and software $ 156,684 $ 128,546 Furniture and fixtures 19,693 18,253 Leasehold improvements 16,993 14,929 Building 6,529 — Construction in progress 7,390 9,762 207,289 171,490 Less: Accumulated depreciation (82,387 ) (67,253 ) Total property and equipment, net $ 124,902 $ 104,237

Accrued Expenses and Other Cu27

Accrued Expenses and Other Current Liabilities (Tables)	6 Months Ended
	Jun. 30, 2015
Disclosure Summary Of Accrued Expenses And Other Current Liabilities [Abstract]
Summary of Accrued Expenses and Other Current Liabilities	Accrued expenses and other current liabilities consist of the following (in thousands): June 30, December 31, 2015 2014 Taxes payable $ 6,526 $ 7,625 Bonuses and commissions 23,195 28,228 Accrued compensation 17,103 14,961 Other employee expenses 16,943 16,080 Other 19,318 12,603 Total accrued expenses and other current liabilities $ 83,085 $ 79,497

Convertible Senior Notes (Table

Convertible Senior Notes (Tables)	6 Months Ended
	Jun. 30, 2015
Convertible Notes Payable [Abstract]
Schedule of Convertible Notes	The Notes consisted of the following (in thousands): June 30, 2015 December 31, 2014 Liability: Principal $ 575,000 $ 575,000 Less: debt discount, net of amortization (115,989 ) (131,236 ) Net carrying amount $ 459,011 $ 443,764
Interest Expense Recognized Related to the Notes	The following table sets forth total interest expense recognized related to the Notes (in thousands): Three Months Ended June 30, Six Months Ended June 30, 2015 2014 2015 2014 Amortization of debt issuance cost $ 413 $ 386 $ 820 $ 766 Amortization of debt discount 7,294 6,816 14,465 13,517 Total $ 7,707 $ 7,202 $ 15,285 $ 14,283 Effective interest rate of the liability component 6.5%

Accumulated Other Comprehensi29

Accumulated Other Comprehensive Loss (Tables)	6 Months Ended
	Jun. 30, 2015
Statement of Comprehensive Income [Abstract]
Schedule of Accumulated Other Comprehensive Income (Loss)	The components of accumulated other comprehensive loss, net of tax, consist of the following (in thousands): June 30, December 31, 2015 2014 Foreign currency translation adjustment $ (11,600 ) $ (11,261 ) Net unrealized loss on investments (672 ) (852 ) Accumulated other comprehensive loss $ (12,272 ) $ (12,113 )

Stockholders' Equity (Tables)

Stockholders' Equity (Tables)	6 Months Ended
	Jun. 30, 2015
Disclosure Common Stock Outstanding And Reserved Shares Of Common Stock For Future Issuance [Abstract]
Common Stock Outstanding and Reserved Shares of Common Stock for Future Issuance	As of June 30, 2015 , we had 155,367,736 shares of common stock outstanding and had reserved shares of common stock for future issuance as follows: June 30, 2015 Stock option plans: Options outstanding 12,017,564 RSUs 13,079,988 Stock awards available for future grants: 2012 Equity Incentive Plan (1) 17,065,080 2012 Employee Stock Purchase Plan (1) 7,754,674 Total reserved shares of common stock for future issuance 49,917,306 (1) Refer to Note 11 for a description of these plans.

Stock Awards (Tables)

Stock Awards (Tables)	6 Months Ended
	Jun. 30, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Schedule of Stock Option Activity	A summary of the stock option activity for the six months ended June 30, 2015 is as follows: Number of Shares Weighted- Average Exercise Price Weighted- Average Remaining Contractual Term (Years) Aggregate Intrinsic Value (in thousands) Outstanding at December 31, 2014 15,897,422 $ 11.96 Granted 156,048 75.34 Exercised (3,875,335 ) 7.41 $ 261,976 Canceled (160,571 ) 22.44 Outstanding at June 30, 2015 12,017,564 $ 14.10 6.47 $ 723,701 Vested and expected to vest as of June 30, 2015 11,914,682 $ 13.82 6.46 $ 720,874 Vested and exercisable as of June 30, 2015 8,983,792 $ 8.20 6.09 $ 593,921
Schedule of Restricted Stock Unit Activity	A summary of RSU activity for the six months ended June 30, 2015 is as follows: Number of Shares Weighted Average Grant Date Fair Value (Per Share) Aggregate Fair Value (in thousands) Outstanding at December 31, 2014 9,941,074 $ 51.19 Granted 5,643,680 72.82 Vested (1,888,777 ) 45.08 $ 140,972 Forfeited (615,989 ) 57.35 Non-vested and outstanding at June 30, 2015 13,079,988 $ 61.11 $ 971,974 Expected to vest as of June 30, 2015 11,559,798 $ 859,009

Interest and other expense, n32

Interest and other expense, net (Tables)	6 Months Ended
	Jun. 30, 2015
Interest and Other Income/(Expense), Net [Abstract]
Schedule of Other Nonoperating Income (Expense) [Table Text Block]	The components of interest and other expense, net, consist of the following (in thousands): Three Months Ended June 30, Six Months Ended June 30, 2015 2014 2015 2014 Interest expense related to the Notes $ (7,707 ) $ (7,202 ) $ (15,285 ) $ (14,283 ) Interest income 1,074 739 2,022 1,402 Foreign currency exchange gain/(loss) (534 ) 1,230 3,292 1,681 Other (19 ) 2 (89 ) 6 Interest and other expense, net $ (7,186 ) $ (5,231 ) $ (10,060 ) $ (11,194 )

Net Loss Per Share Attributab33

Net Loss Per Share Attributable to Common Stockholders (Tables)	6 Months Ended
	Jun. 30, 2015
Earnings Per Share [Abstract]
Calculation of Basic and Diluted Net Loss Per Share Attributable to Common Stockholders	The following table presents the calculation of basic and diluted net loss per share (in thousands, except share and per share data): Three Months Ended June 30, Six Months Ended June 30, 2015 2014 2015 2014 Numerator: Net loss $ (61,925 ) $ (50,363 ) $ (120,018 ) $ (93,674 ) Denominator: Weighted-average shares outstanding—basic and diluted 154,465,367 144,456,675 153,041,433 143,267,181 Net loss per share: Basic $ (0.40 ) $ (0.35 ) $ (0.78 ) $ (0.65 ) Diluted $ (0.40 ) $ (0.35 ) $ (0.78 ) $ (0.65 )
Summary of Potentially Dilutive Securities	Potentially dilutive securities that are not included in the calculation of diluted net loss per share because doing so would be antidilutive are as follows: June 30, 2015 2014 Common stock options 12,017,564 19,375,640 Restricted stock units 13,079,988 8,353,408 Common stock subject to repurchase 21 45,879 ESPP obligations 196,836 187,649 Convertible senior notes 7,783,023 7,783,023 Warrants related to the issuance of convertible senior notes 7,783,023 7,783,023 Total potentially dilutive securities 40,860,455 43,528,622

Information about Geographic 34

Information about Geographic Areas (Tables)	6 Months Ended
	Jun. 30, 2015
Segments, Geographical Areas [Abstract]
Revenues by Geographic Area, Based on Billing Location of Customer	Revenues by geographic area, based on the billing location of the customer, were as follows for the periods presented (in thousands): Three Months Ended June 30, Six Months Ended June 30, 2015 2014 2015 2014 Revenues by geography: North America (1) $ 174,387 $ 114,261 $ 323,033 $ 209,225 EMEA (2) 55,803 42,194 104,333 78,500 Asia Pacific and other 16,526 10,302 31,314 18,122 Total revenues $ 246,716 $ 166,757 $ 458,680 $ 305,847
Schedule of Long Lived Assets by Geographic Area	Long-lived assets by geographic area were as follows (in thousands): June 30, December 31, 2015 2014 Long-lived assets: North America (3) $ 82,417 $ 66,489 EMEA (2) 31,534 27,032 Asia Pacific and other 10,951 10,716 Total long-lived assets $ 124,902 $ 104,237 (1) Revenues attributed to the United States were approximately 95% of North America revenues for the three months ended June 30, 2015 , and 94% for the three months ended June 30, 2014 , the six months ended June 30, 2015 and the six months ended June 30, 2014 . (2) Europe, the Middle East and Africa (3) Long-lived assets attributed to the United States were approximately 98% and 97% of North America long-lived assets as of June 30, 2015 and December 31, 2014 , respectively.

Investments - Summary of Invest

Investments - Summary of Investments (Detail) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Dec. 31, 2014
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$ 731,025	$ 683,960
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	123	67
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	(694)	(919)
Available-for-sale Securities	$ 730,454	683,108
Available For Sale Securities Maturities Term Maximum	24 months
Available-for-sale Securities, Current	$ 397,170	416,336
Long-term investments	333,284	266,772
Commercial Paper [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	11,362	8,195
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	6	1
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	0	0
Available-for-sale Securities	11,368	8,196
Corporate notes and bonds [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	566,472	554,421
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	54	56
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	(688)	(845)
Available-for-sale Securities	565,838	553,632
Certificates of Deposit [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	41,505	27,251
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	19	8
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	(3)	(2)
Available-for-sale Securities	41,521	27,257
U.S. government agency securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	111,686	94,093
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	44	2
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	(3)	(72)
Available-for-sale Securities	$ 111,727	$ 94,023

Investments - Additional Inform

Investments - Additional Information (Detail) - Jun. 30, 2015 - USD ($)	Total
Available-for-sale Securities [Abstract]
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners	20.00%
Available for sale, gross unrealized term held	12 months
Other-than-temporary impairments considered	$ 0
Other Investment Not Readily Marketable, Fair Value	$ 10,000,000

Investments - Fair Values and G

Investments - Fair Values and Gross Unrealized Losses of Available-for-Sale Securities Aggregated by Investment Category (Detail) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Schedule of Available-for-sale Securities [Line Items]
Fair Value	$ 451,848	$ 524,153
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss	(694)	(919)
Corporate notes and bonds [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair Value	417,641	436,140
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss	(688)	(845)
Certificates of Deposit [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair Value	9,103	7,999
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss	(3)	(2)
US Government Agencies Debt Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair Value	25,104	80,014
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss	$ (3)	$ (72)

Fair Value Measurements - Asset

Fair Value Measurements - Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	$ 730,454	$ 683,108
Commercial Paper [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	11,368	8,196
Corporate notes and bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	565,838	553,632
Certificates of Deposit [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	41,521	27,257
US Government Agencies Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	111,727	94,023
Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total	45,954	46,541
Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total	730,454	687,708
Estimate of Fair Value Measurement [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total	776,408	734,249
Cash Equivalents [Member] | Level 1 [Member] | Money Market Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	45,954	46,541
Cash Equivalents [Member] | Level 1 [Member] | Commercial Paper [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	0	0
Cash Equivalents [Member] | Level 2 [Member] | Money Market Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	0	0
Cash Equivalents [Member] | Level 2 [Member] | Commercial Paper [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	0	4,600
Cash Equivalents [Member] | Estimate of Fair Value Measurement [Member] | Money Market Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	45,954	46,541
Cash Equivalents [Member] | Estimate of Fair Value Measurement [Member] | Commercial Paper [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	0	4,600
Short-term Investments [Member] | Level 1 [Member] | Commercial Paper [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	0	0
Short-term Investments [Member] | Level 1 [Member] | Corporate notes and bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	0	0
Short-term Investments [Member] | Level 1 [Member] | Certificates of Deposit [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	0	0
Short-term Investments [Member] | Level 1 [Member] | US Government Agencies Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	0	0
Short-term Investments [Member] | Level 2 [Member] | Commercial Paper [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	11,367	8,196
Short-term Investments [Member] | Level 2 [Member] | Corporate notes and bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	312,217	342,864
Short-term Investments [Member] | Level 2 [Member] | Certificates of Deposit [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	32,518	25,258
Short-term Investments [Member] | Level 2 [Member] | US Government Agencies Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	41,068	40,018
Short-term Investments [Member] | Estimate of Fair Value Measurement [Member] | Commercial Paper [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	11,367	8,196
Short-term Investments [Member] | Estimate of Fair Value Measurement [Member] | Corporate notes and bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	312,217	342,864
Short-term Investments [Member] | Estimate of Fair Value Measurement [Member] | Certificates of Deposit [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	32,518	25,258
Short-term Investments [Member] | Estimate of Fair Value Measurement [Member] | US Government Agencies Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	41,068	40,018
Other Long-term Investments [Member] | Level 1 [Member] | Corporate notes and bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	0	0
Other Long-term Investments [Member] | Level 1 [Member] | Certificates of Deposit [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	0	0
Other Long-term Investments [Member] | Level 1 [Member] | US Government Agencies Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	0	0
Other Long-term Investments [Member] | Level 2 [Member] | Corporate notes and bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	253,621	210,768
Other Long-term Investments [Member] | Level 2 [Member] | Certificates of Deposit [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	9,004	1,999
Other Long-term Investments [Member] | Level 2 [Member] | US Government Agencies Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	70,659	54,005
Other Long-term Investments [Member] | Estimate of Fair Value Measurement [Member] | Corporate notes and bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	253,621	210,768
Other Long-term Investments [Member] | Estimate of Fair Value Measurement [Member] | Certificates of Deposit [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	9,004	1,999
Other Long-term Investments [Member] | Estimate of Fair Value Measurement [Member] | US Government Agencies Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	$ 70,659	$ 54,005

Goodwill and Intangible Asset39

Goodwill and Intangible Assets - Schedule of Goodwill (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Goodwill [Roll Forward]
Goodwill, beginning of period	$ 55,016
Goodwill, Acquired During Period	1,442
Foreign currency translation adjustments	954
Goodwill, end of period	57,412
Business Acquisition [Line Items]
Total Purchase Consideration to Acquire Businesses, Net of Cash Acquired	1,600
Payments to Acquire Businesses, Net of Cash Acquired	1,100	$ 0
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net	200
One Year After Aquisition Date [Member]
Business Acquisition [Line Items]
Payments to Acquire Businesses, Net of Cash Acquired	$ 500
Payment Period to Acquire Business	1 year

Goodwill and Intangible Asset40

Goodwill and Intangible Assets - Schedule of Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 60,779		$ 60,779		$ 62,155
Accumulated Amortization	(13,347)		(13,347)		(7,629)
Intangible Assets, Net (Excluding Goodwill)	47,432		47,432		54,526
Amortization expense	2,900	$ 500	5,900	$ 900
Developed Technology Rights [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	58,546		58,546		59,895
Accumulated Amortization	(12,079)		(12,079)		(6,727)
Intangible Assets, Net (Excluding Goodwill)	46,467		46,467		53,168
Order or Production Backlog [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	591		591		588
Accumulated Amortization	(382)		(382)		(184)
Intangible Assets, Net (Excluding Goodwill)	209		209		404
Other acquisition-related intangible assets [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	567		567		597
Accumulated Amortization	(467)		(467)		(398)
Intangible Assets, Net (Excluding Goodwill)	100		100		199
Acquisition related intangible asset [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	59,704		59,704		61,080
Accumulated Amortization	(12,928)		(12,928)		(7,309)
Intangible Assets, Net (Excluding Goodwill)	46,776		46,776		53,771
Other Intangible Assets [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	1,075		1,075		1,075
Accumulated Amortization	(419)		(419)		(320)
Intangible Assets, Net (Excluding Goodwill)	$ 656		$ 656		$ 755

Property and Equipment Property

Property and Equipment Property, Plant and Equipment (Detail) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Property, Plant and Equipment [Line Items]
Property and equipment, Gross	$ 207,289,000		$ 207,289,000		$ 171,490,000
Less: accumulated depreciation	(82,387,000)		(82,387,000)		(67,253,000)
Total property and equipment, net	124,902,000		124,902,000		104,237,000
Depreciation	12,095,986	$ 8,227,768	$ 22,914,212	$ 15,716,641
Tel Aviv Office Lease [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life			39 years
Computer Equipment And Software [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, Gross	156,684,000		$ 156,684,000		128,546,000
Furniture and Fixtures [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, Gross	19,693,000		19,693,000		18,253,000
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, Gross	16,993,000		16,993,000		14,929,000
Building [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, Gross	6,529,000		6,529,000		0
Construction in Progress [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, Gross	$ 7,390,000		$ 7,390,000		$ 9,762,000

Accrued Expenses and Other Cu42

Accrued Expenses and Other Current Liabilities - (Detail) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Disclosure Summary Of Accrued Expenses And Other Current Liabilities [Abstract]
Taxes Payable, Current	$ 6,526	$ 7,625
Bonuses and commissions	23,195	28,228
Accrued compensation	17,103	14,961
Other employee expenses	16,943	16,080
Other	19,318	12,603
Accrued expenses and other current liabilities	$ 83,085	$ 79,497

Convertible Senior Notes (Detai

Convertible Senior Notes (Details) - USD ($) $ / shares in Units, shares in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014	Nov. 06, 2013	Nov. 01, 2013
Debt Conversion [Line Items]
Convertible Debt, Fair Value Disclosures	$ 675,100,000		$ 675,100,000		$ 653,300,000
Amortization of Debt Discount (Premium)	7,294,000	$ 6,816,000	14,465,000	$ 13,517,000
Notes face amount			$ 1,000
Contractual interest rate - Notes						0.00%
Notes Maturity Date			Nov. 1, 2018
Notes, par value	575,000,000		$ 575,000,000		$ 575,000,000		$ 575,000,000
Converted number of shares			7.8
Conversion rate			13.54
Initial conversion price, per share						$ 73.88
Terms of conversion feature			July 1, 2018
Earliest date of conversion			Mar. 31, 2014
Percentage of purchase price of Notes which should be paid upon fundamental change			100.00%
Remaining life of the Notes			40 months
Amortization of debt discount and issuance cost	$ 7,707,000	$ 7,202,000	$ 15,285,000	$ 14,283,000
Noted Hedged shares of common stock covered			7.8
Purchase of convertible note hedge			$ 135,800,000
Issuance of warrants (in shares)	7.8		7.8
Exercise price of warrants issued (USD per share)						$ 107.46
Proceeds from issuance of warrants			$ 84,500,000
Calendar Quarter End [Member]
Debt Conversion [Line Items]
Number of days out of 30 that common stock price exceeded conversion price, days			20 days
Number of consecutive trading days in a period			30 days
Calendar Quarter End [Member] | Minimum [Member]
Debt Conversion [Line Items]
Threshold percentage of stock price trigger			130.00%
Measurement Period [Member]
Debt Conversion [Line Items]
Number of days out of 30 that common stock price exceeded conversion price, days			5 days
Number of consecutive trading days in a period			5 days
Notes face amount			$ 1,000
Measurement Period [Member] | Maximum [Member]
Debt Conversion [Line Items]
Threshold percentage of stock price trigger			98.00%

Convertible Senior Notes - Sche

Convertible Senior Notes - Schedule of Notes Payable (Details) - USD ($)	Jun. 30, 2015	Dec. 31, 2014	Nov. 01, 2013
Convertible Notes Payable [Abstract]
Notes, par value	$ 575,000,000	$ 575,000,000	$ 575,000,000
Less: debt discount net of amortization	(115,989,000)	(131,236,000)
Convertible senior notes, net	$ 459,011,000	$ 443,764,000

Convertible Senior Notes - Sc45

Convertible Senior Notes - Schedule of Interest Expense Recognized (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Convertible Notes Payable [Abstract]
Amortization of debt issuance cost	$ 413	$ 386	$ 820	$ 766
Amortization of Debt Discount (Premium)	7,294	6,816	14,465	13,517
Amortization of debt discount and issuance cost	$ 7,707	$ 7,202	$ 15,285	$ 14,283
Effective interest rate of the liability component	6.50%	6.50%	6.50%	6.50%

Accumulated Other Comprehensi46

Accumulated Other Comprehensive Loss - (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Statement of Comprehensive Income [Abstract]
Foreign currency translation adjustment	$ (11,600)	$ (11,261)
Net unrealized loss on investments	(672)	(852)
Accumulated other comprehensive loss, net of tax	$ (12,272)	$ (12,113)

Stockholders' Equity - Addition

Stockholders' Equity - Additional Information (Detail) - shares	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Stockholders' Equity
Shares of common stock, authorized (shares)	600,000,000
Shares of common stock, issued and sold (shares)	155,367,736
Common Stock [Member]
Stockholders' Equity
Stock Issued During Period, Shares, New Issues	6,034,044	4,825,594

Stockholders' Equity - Outstand

Stockholders' Equity - Outstanding and Reserved Shares of Common Stock for Future Issuance (Detail) - shares		Jun. 30, 2015	Dec. 31, 2014
Common stock outstanding and reserved shares of common stock for future issuance
Options outstanding		12,017,564	15,897,422
Total reserved shares of common stock for future issuance		49,917,306
2012 Equity Incentive Plan [Member]
Common stock outstanding and reserved shares of common stock for future issuance
Total reserved shares of common stock for future issuance	[1]	17,065,080
2012 Employee Stock Purchase Plan [Member]
Common stock outstanding and reserved shares of common stock for future issuance
Total reserved shares of common stock for future issuance	[1]	7,754,674
Stock Options [Member]
Common stock outstanding and reserved shares of common stock for future issuance
Options outstanding		12,017,564
Restricted Stock Units (RSUs) [Member]
Common stock outstanding and reserved shares of common stock for future issuance
RSUs		13,079,988	9,941,074
[1]	Refer to Note 11 for a description of these plans.

Stock Awards - Additional Infor

Stock Awards - Additional Information (Detail) - Jun. 30, 2015 - USD ($) $ / shares in Units, $ in Millions	Total
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average grant date fair value of options granted (usd per share)	$ 33.71
Fair value of vested shares	$ 20.5
Total unrecognized compensation cost, adjusted for estimated forfeitures, related to unvested stock options	$ 41.7
Weighted-average remaining vesting period for unvested stock options	2 years 88 days
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense recognized, vesting term	4 years
Weighted-average remaining vesting period for unvested stock options	3 years 55 days
Unrecognized compensation expense expected to be recognized	$ 614.9
Restricted Stock Units (RSUs) [Member] | First Vesting Period [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense recognized, vesting term	3 months
Restricted Stock Units (RSUs) [Member] | Second Vesting Period [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense recognized, vesting term	3 months
Restricted Stock Units (RSUs) [Member] | Third Vesting Period [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense recognized, vesting term	3 months
Restricted Stock Units (RSUs) [Member] | Fourth Vesting Period [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense recognized, vesting term	3 months
2012 Equity Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares of common stock outstanding, increase, percentage	5.00%
Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized	7,475,454
2012 Employee Stock Purchase Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares of common stock outstanding, increase, percentage	1.00%
Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized	1,495,090
Common stock purchase price percentage	85.00%
Award offering period	6 months

Stock Awards - Summary of stock

Stock Awards - Summary of stock option activity (Detail) - Jun. 30, 2015 - USD ($) $ / shares in Units, $ in Thousands	Total
Summary of stock option activity
Number of Shares, Outstanding, Beginning Balance	15,897,422
Number of Shares, Granted	156,048
Number of Shares, Exercised	(3,875,335)
Number of shares, Cancelled	(160,571)
Number of Shares, Outstanding, Ending Balance	12,017,564
Number of Shares, Vested and expected to vest	11,914,682
Number of Shares, Vested and exercisable	8,983,792
Weighted-Average Exercise Price
Weighted-Average Exercise Price, Outstanding, Beginning Balance, usd per share	$ 11.96
Weighted-Average Exercise Price, Granted, usd per share	75.34
Weighted-Average Exercise Price, Exercised, usd per share	7.41
Weighted-Average Exercise Price Cancelled, usd per share	22.44
Weighted-Average Exercise Price, Outstanding, Ending Balance, usd per share	14.10
Weighted-Average Exercise Price, Vested and expected to vest, usd per share	13.82
Weighted-Average Exercise Price, Vested and exercisable, usd per share	$ 8.20
Weighted-Average Remaining Contractual Life	6 years 172 days
Weighted-Average Remaining Contractual Term, Vested and expected to vest	6 years 168 days
Weighted-Average Remaining Contractual Term, Vested and exercisable	6 years 33 days
Aggregate Intrinsic Value, Exercised	$ 261,976
Aggregate Intrinsic Value, Outstanding	723,701
Aggregate Intrinsic Value, Vested and expected to vest	720,874
Aggregate Intrinsic Value, Vested and exercisable	$ 593,921

Stock Awards Stock Awards - Res

Stock Awards Stock Awards - Restricted Stock Unit Table (Details) - Jun. 30, 2015 - Restricted Stock Units (RSUs) [Member] - USD ($) $ / shares in Units, $ in Thousands	Total
Shares Outstanding
Outstanding shares units beginning balance	9,941,074
Granted	5,643,680
Vested	(1,888,777)
Forfeited	(615,989)
Outstanding shares units ending balance	13,079,988
Expected to vest	11,559,798
Weighted-Average Grant Date Fair Value
Weighted-Average Grant Date Fair Value, Outstanding, Beginning Balance, usd per share	$ 51.19
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value	72.82
Weighted-Average Grant Date Fair Value, Vested, usd per share	45.08
Weighted-Average Grant Date Fair Value, Repurchased, usd per share	57.35
Weighted-Average Grant Date Fair Value, Outstanding, Ending Balance, usd per share	$ 61.11
Aggregate Intrinsic Value, vested	$ 140,972
Aggregate Intrinsic Value, Non-vested	971,974
Aggregated Intrinsic Value, Expected to vest	$ 859,009
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number	13,079,988

Interest and other expense, n52

Interest and other expense, net (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Interest and Other Income/(Expense), Net [Abstract]
Amortization of Financing Costs and Discounts	$ (7,707)	$ (7,202)	$ (15,285)	$ (14,283)
Investment Income, Interest	1,074	739	2,022	1,402
Foreign Currency Transaction Gain/(Loss), before Tax	(534)	1,230	3,292	1,681
Other Nonoperating Income (Expense)	(19)	2	(89)	6
Interest and other expense, net	$ (7,186)	$ (5,231)	$ (10,060)	$ (11,194)

Net Loss Per Share Attributab53

Net Loss Per Share Attributable to Common Stockholders - Calculation of Basic and Diluted Net Income (Loss) Per Share Attributable to Common Stockholders (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Numerator:
Net loss	$ (61,925)	$ (50,363)	$ (120,018)	$ (93,674)
Net loss attributable to common stockholders - basic	(61,925)	(50,363)	(120,018)	(93,674)
Net loss attributable to common stockholders - diluted	$ (61,925)	$ (50,363)	$ (120,018)	$ (93,674)
Denominator:
Weighted-average shares used to compute net loss per share - basic and diluted	154,465,367	144,456,675	153,041,433	143,267,181
Net loss per share attributable to common stockholders:
Earnings Per Share, Basic and Diluted	$ (0.40)	$ (0.35)	$ (0.78)	$ (0.65)

Net Loss Per Share Attributab54

Net Loss Per Share Attributable to Common Stockholders - Summary of Potentially Dilutive Securities (Detail) - shares	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total potentially dilutive securities	40,860,455	43,528,622
Common stock options [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total potentially dilutive securities	12,017,564	19,375,640
Restricted Stock Units (RSUs) [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total potentially dilutive securities	13,079,988	8,353,408
Common stock subject to repurchase [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total potentially dilutive securities	21	45,879
ESPP obligations [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total potentially dilutive securities	196,836	187,649
Convertible Notes Payable [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total potentially dilutive securities	7,783,023	7,783,023
Warrant [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total potentially dilutive securities	7,783,023	7,783,023

Income Taxes Income Taxes (Deta

Income Taxes Income Taxes (Details)	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Income Tax Disclosure [Abstract]
Effective income tax rate	(2.00%)	(1.00%)	(2.00%)	(2.00%)
Federal statutory rate	34.00%	34.00%	34.00%	34.00%

Information about Geographic 56

Information about Geographic Areas - Revenues by Geographic Area, Based on Billing Location of Customer (Detail) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Segment Reporting Information [Line Items]
Percentage of U.S. Revenues in North America		95.00%	94.00%	94.00%	94.00%
Revenues by geography
Revenues		$ 246,716	$ 166,757	$ 458,680	$ 305,847
North America [Member]
Revenues by geography
Revenues	[1]	174,387	114,261	323,033	209,225
EuropeMiddleEastAfrica [Member] [Domain]
Revenues by geography
Revenues	[2]	55,803	42,194	104,333	78,500
Asia Pacific and other [Member]
Revenues by geography
Revenues		$ 16,526	$ 10,302	$ 31,314	$ 18,122
[1]	Revenues attributed to the United States were approximately 95% of North America revenues for the three months ended June 30, 2015, and 94% for the three months ended June 30, 2014, the six months ended June 30, 2015 and the six months ended June 30, 2014.
[2]	Europe, the Middle East and Africa

Information about Geographic 57

Information about Geographic Areas - Long-lived Assets by Geographic Area (Detail) - USD ($) $ in Thousands		Jun. 30, 2015	Dec. 31, 2014
Segment Reporting Information [Line Items]
Percentage of U.S. long-lived assets in North America		98.00%	97.00%
Long-lived assets		$ 124,902	$ 104,237
North America [Member]
Segment Reporting Information [Line Items]
Long-lived assets	[1]	82,417	66,489
EuropeMiddleEastAfrica [Member] [Domain]
Segment Reporting Information [Line Items]
Long-lived assets	[2]	31,534	27,032
Asia Pacific and other [Member]
Segment Reporting Information [Line Items]
Long-lived assets		$ 10,951	$ 10,716
[1]	Long-lived assets attributed to the United States were approximately 98% and 97% of North America long-lived assets as of June 30, 2015 and December 31, 2014, respectively.
[2]	Europe, the Middle East and Africa