Ellie Mae (ELLI) 10-Q 3 Aug 17 2017 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2017	Aug. 01, 2017
Document and Entity Information [Abstract]
Entity Registrant Name	ELLIE MAE INC
Entity Central Index Key	1,122,388
Document Type	10-Q
Document Period End Date	Jun. 30, 2017
Amendment Flag	false
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	Q2
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		34,378,495

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 213,204	$ 380,907
Short-term investments	120,454	41,841
Accounts receivable, net of allowance for doubtful accounts of $249 and $45 as of June 30, 2017 and December 31, 2016, respectively	45,542	39,358
Prepaid expenses and other current assets	18,965	15,209
Total current assets	398,165	477,315
Property and equipment, net	156,698	126,297
Long-term investments	121,096	45,931
Intangible assets, net	15,133	17,289
Deposits and other assets	22,705	10,138
Goodwill	74,547	74,547
Total assets	788,344	751,517
Current liabilities:
Accounts payable	15,831	15,942
Accrued and other current liabilities	22,901	39,809
Deferred revenue	17,985	23,126
Total current liabilities	56,717	78,877
Leases payable, net of current portion	28	85
Other long-term liabilities	16,424	17,647
Total liabilities	73,169	96,609
Commitments and contingencies (Note 8)
Stockholders' equity:
Common stock, $0.0001 par value per share; 140,000,000 authorized shares, 34,320,850 and 33,685,649 shares issued and outstanding as of June 30, 2017 and December 31, 2016, respectively	3	3
Additional paid-in capital	629,443	612,098
Accumulated other comprehensive loss	(264)	(219)
Retained earnings	85,993	43,026
Total stockholders' equity	715,175	654,908
Total liabilities and stockholders' equity	$ 788,344	$ 751,517

Condensed Consolidated Balance3

Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Statement of Financial Position [Abstract]
Accounts receivable, allowances for doubtful accounts	$ 249	$ 45
Common stock, par value	$ 0.0001000	$ 0.0001000
Common stock, shares authorized	140,000,000	140,000,000
Common stock, shares issued	34,320,850	33,685,649
Common stock, shares outstanding	34,320,850	33,685,649

Condensed Consolidated Statemen

Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Statement of Comprehensive Income [Abstract]
Revenues	$ 104,125	$ 90,098	$ 197,127	$ 163,723
Cost of revenues	38,267	28,453	73,035	55,084
Gross profit	65,858	61,645	124,092	108,639
Operating expenses:
Sales and marketing	13,860	12,506	33,240	27,792
Research and development	16,046	14,662	33,453	27,115
General and administrative	18,727	17,793	35,669	33,525
Total operating expenses	48,633	44,961	102,362	88,432
Income from operations	17,225	16,684	21,730	20,207
Other income, net	762	162	1,263	361
Income before income taxes	17,987	16,846	22,993	20,568
Income tax provision (benefit)	(836)	6,258	(5,429)	7,474
Net income	$ 18,823	$ 10,588	$ 28,422	$ 13,094
Net income per share of common stock:
Basic	$ 0.55	$ 0.36	$ 0.84	$ 0.44
Diluted	$ 0.52	$ 0.34	$ 0.79	$ 0.42
Weighted average common shares used in computing net income per share of common stock:
Basic	34,028,553	29,578,630	33,866,233	29,643,779
Diluted	35,908,813	31,188,599	35,771,565	31,279,512
Other comprehensive income, net of taxes:
Net income	$ 18,823	$ 10,588	$ 28,422	$ 13,094
Unrealized gain (loss) on investments	(103)	101	(45)	429
Comprehensive income	$ 18,720	$ 10,689	$ 28,377	$ 13,523

Condensed Consolidated Stateme5

Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 28,422	$ 13,094
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	16,282	8,679
Amortization of intangible assets	2,156	2,949
Stock-based compensation expense	16,361	14,708
Deferred income taxes	(5,662)	6,153
Loss on disposal of property and equipment	0	5
Amortization (accretion) of investments	(139)	490
Changes in operating assets and liabilities:
Accounts receivable, net	(6,183)	(15,738)
Prepaid expenses and other current assets	(3,757)	(1,388)
Deposits and other assets	194	(1,580)
Accounts payable	2,677	(432)
Accrued, other current and other liabilities	(10,243)	(6,629)
Deferred revenue	(5,087)	2,895
Net cash provided by operating activities	35,021	23,206
CASH FLOWS FROM INVESTING ACTIVITIES:
Acquisition of property and equipment	(21,800)	(15,566)
Acquisition of internal-use software	(25,478)	(16,373)
Purchases of investments	(181,760)	(35,615)
Maturities of investments	28,076	31,551
Sale of investments	0	20,000
Net cash used in investing activities	(200,962)	(16,003)
CASH FLOWS FROM FINANCING ACTIVITIES:
Payment of capital lease obligations	(553)	(2,080)
Proceeds from issuance of common stock under employee stock plans	10,207	9,127
Payment of issuance costs relating to common stock issued in public offering	(15)	0
Tax payments related to shares withheld for vested restricted stock units	(11,401)	(4,037)
Net cash provided by (used in) financing activities	(1,762)	3,010
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	(167,703)	10,213
CASH AND CASH EQUIVALENTS, Beginning of period	380,907	34,396
CASH AND CASH EQUIVALENTS, End of period	213,204	44,609
Supplemental disclosure of cash flow information:
Cash paid for interest	370	145
Cash paid for income taxes	463	129
Supplemental disclosure of non-cash investing and financing activities:
Fixed asset purchases accrued but not paid	3,172	3,709
Stock-based compensation capitalized to property and equipment	$ 2,178	$ 1,125

Description of Business

Description of Business	6 Months Ended
	Jun. 30, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Description of Business	Description of Business Ellie Mae, Inc. (“Ellie Mae,” the “Company,” “we,” “our” or “us”) is a leading provider of innovative on-demand software solutions and services for the residential mortgage industry in the United States . Banks, credit unions and mortgage lenders use the Company’s Encompass® all-in-one mortgage management solution (“Encompass”) to originate and fund mortgages and improve compliance, loan quality, and efficiency.

Basis of Presentation and Signi

Basis of Presentation and Significant Accounting Policies	6 Months Ended
	Jun. 30, 2017
Accounting Policies [Abstract]
Basis of Presentation and Significant Accounting Policies	Basis of Presentation and Significant Accounting Policies The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with generally accepted accounting principles in the United States (“ U.S. GAAP ”) and applicable rules and regulations of the Securities and Exchange Commission (“ SEC ”) regarding interim financial reporting. Certain information and note disclosures included in financial statements prepared in accordance with U.S. GAAP have been condensed or omitted pursuant to such rules and regulations. Therefore, these condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and notes included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2016 , which was filed with the SEC on February 22, 2017 (“ 2016 Form 10-K ”). The condensed consolidated balance sheet as of December 31, 2016 , included herein, was derived from the audited financial statements as of that date but does not include all disclosures, including notes, required by U.S. GAAP . In the opinion of management, the accompanying unaudited condensed consolidated financial statements reflect all normal recurring adjustments necessary to present fairly the financial position, results of operations and cash flows for the interim periods but are not necessarily indicative of the results of operations to be anticipated for the full fiscal year ending December 31, 2017 , or any future period. Principles of Consolidation The condensed consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries. All intercompany balances and transactions have been eliminated. Use of Estimates The preparation of condensed consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Management evaluates estimates on a regular basis including those relating to revenue recognition, allowance for doubtful accounts, goodwill, intangible assets, valuation of deferred income taxes, stock-based compensation, and unrecognized tax benefits, among others. Actual results could differ from those estimates, and such differences may have a material impact on the Company’s condensed consolidated financial statements and footnotes. Significant Accounting Policies The Company’s significant accounting policies are described in Note 2 of the Notes to Consolidated Financial Statements in its 2016 Form 10-K . There have been no significant changes to these policies during the six months ended June 30, 2017 , except in relation to the Company’s adoption of ASU No. 2016-09, Compensation—Stock Compensation (Topic 718): Improvements to Employee Shared-Based Payment Accounting (“ASU 2016-09”) on January 1, 2017, whereby the Company now records excess tax benefits and tax deficiencies as an income tax benefit or expense when stock awards vest or settle, and the Company no longer classifies the cash flow from excess tax benefits as a reduction from operating cash flows. This resulted in a $1.2 million increase in net cash provided by operating activities and a corresponding $1.2 million decrease in net cash provided by financing activities for the six months ended June 30, 2016. Comprehensive Income Comprehensive income consists of net income and other comprehensive income . Other comprehensive income includes certain changes in equity that are excluded from net income, specifically unrealized gains on marketable securities. Except for net realized gain on investments , which was not significant, there were no reclassifications out of accumulated other comprehensive income that affected net income during the three and six months ended June 30, 2017 and 2016 . Recent Accounting Pronouncements In May 2014, the Financial Accounting Standards Board (“ FASB ”) issued Accounting Standards Update (“ ASU ”) No. 2014-09, Revenue from Contracts with Customers (“ ASU 2014-09 ”), which outlines a single comprehensive model for entities to use in accounting for revenue arising from contracts with customers and supersedes most current revenue recognition guidance, including industry-specific guidance. This standard also requires significantly expanded disclosures about revenue recognition. The effective date for public entities is fiscal years beginning after December 15, 2017 and early adoption is allowed. The Company will adopt the new standard as of January 1, 2018. The guidance permits two methods of adoption: retrospectively to each prior reporting period presented (full retrospective method), or retrospectively with the cumulative effect of initially applying the guidance recognized at the date of initial application (modified retrospective method). The Company is continuing to evaluate the impact of the new standard on its accounting policies, processes, and systems, including impacts from guidance issued by the FASB Transition Resource Group as part of its November 2016 meeting. The Company has assigned internal resources, engaged a third-party service provider, and is in the process of finalizing the evaluation and completing the implementation. The Company expects an impact to certain revenue streams due to the removal of the current limitation on contingent revenue, which may affect the timing of revenues being recognized for certain contracts. The Company has also identified potential impacts to the costs to obtain contracts, which is primarily comprised of sales commissions and the related fringe benefits associated with non-cancelable contracts. The Company expects to capitalize certain costs that are expensed under the current standard, and the Company expects an increase in the amortization period over which the capitalized costs will be recognized. The Company is continuing to evaluate the impact to the expected period of benefit under ASU 2014-09. The Company is evaluating the adoption method based on various factors including the significance of the impact of the new standard on the Company’s financial results and system capabilities. This evaluation is in process, and the adoption method has not been determined. In January 2016, the FASB issued ASU No. 2016-01, Financial Instruments-Overall: Recognition and Measurement of Financial Assets and Financial Liabilities (“ASU 2016-01”), which updates certain aspects of recognition, measurement, presentation and disclosure of financial instruments. ASU 2016-01 is effective for fiscal years, and interim periods within those years, beginning after December 15, 2017, and early adoption is not permitted. The Company is currently evaluating the impact of this accounting standard update on its consolidated financial statements. In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842) (“ASU 2016-02”), which requires lessees to put most leases on their balance sheets but recognize the expenses on their income statements in a manner similar to current practice. ASU 2016-02 states that a lessee would recognize a lease liability for the obligation to make lease payments and a right-to-use asset for the right to use the underlying asset for the lease term. The standard is effective for interim and annual periods beginning after December 15, 2018, and early adoption is permitted. The Company currently does not intend to early adopt and is evaluating the impact of this accounting standard update on its consolidated financial statements. In May 2017, the FASB issued ASU No. 2017-09, Compensation – Stock Compensation (Topic 718): Scope of Modification Accounting (“ASU 2017-09”), which provides guidance on determining which changes to the terms and conditions of share-based payment awards require an entity to apply modification accounting under Topic 718. ASU 2017-09 is effective for interim and annual periods beginning after December 15, 2017, and early adoption is permitted. The Company is currently evaluating the impact of this accounting standard update on its consolidated financial statements. New Standards Adopted In January 2017, the FASB issued ASU No. 2017-01, Business Combinations (Topic 805): Clarifying the Definition of a Business . This standard clarifies the definition of a business and is intended to help companies evaluate whether transactions should be accounted for as acquisitions (or disposals) of assets or businesses. The standard is effective for interim and annual periods beginning after December 15, 2017 and early adoption is permitted under certain circumstances. The standard should be applied prospectively as of the beginning of the period of adoption. The Company has elected to early adopt the standard on April 1, 2017. The adoption did not have an impact on the Company’s consolidated financial statements as there have been no business combinations in fiscal year 2017 to date.

Net Income Per Share of Common

Net Income Per Share of Common Stock	6 Months Ended
	Jun. 30, 2017
Earnings Per Share [Abstract]
Net Income Per Share of Common Stock	Net Income Per Share of Common Stock Net income per share of common stock is calculated by dividing net income by the weighted average shares of common stock outstanding during the period. Diluted net income per share of common stock is calculated by dividing net income by the weighted average shares of common stock outstanding and potential shares of common stock during the period. Potential shares of common stock include dilutive shares attributable to the assumed exercise of stock options, restricted stock unit awards (“ RSU s”), performance-vesting RSUs, performance share awards (“ Performance Awards ”), and Employee Stock Purchase Plan (“ ESPP ”) shares using the treasury stock method, if dilutive. The components of net income per share of common stock were as follows: Three Months ended June 30, Six Months ended June 30, 2017 2016 2017 2016 (in thousands, except share and per share amounts) Net income $ 18,823 $ 10,588 $ 28,422 $ 13,094 Basic shares: Weighted average common shares outstanding 34,028,553 29,578,630 33,866,233 29,643,779 Diluted shares: Weighted average shares used to compute basic net income per share 34,028,553 29,578,630 33,866,233 29,643,779 Effect of potentially dilutive securities: Employee stock options, RSUs, performance-vesting RSUs, Performance Awards and ESPP shares 1,880,260 1,609,969 1,905,332 1,635,733 Weighted average shares used to compute diluted net income per share 35,908,813 31,188,599 35,771,565 31,279,512 Net income per share: Basic $ 0.55 $ 0.36 $ 0.84 $ 0.44 Diluted $ 0.52 $ 0.34 $ 0.79 $ 0.42 The following potential weighted average common shares were excluded from the computation of diluted net income per share, as their effect would have been anti-dilutive: Three Months ended June 30, Six Months ended June 30, 2017 2016 2017 2016 Employee stock options and awards 6,601 31,721 110,587 237,177 Performance-vesting RSUs and Performance Awards are included in the diluted shares outstanding for each period if the established performance criteria have been met at the end of the respective periods. However, if none of the required performance criteria have been met for such awards, the Company includes the number of shares that would be issuable if the end of the reporting period were the end of the contingency period. Accordingly, in addition to the employee stock options and awards noted above, 61,494 and 136,598 shares underlying performance-vesting RSUs and Performance Awards were excluded from the dilutive shares outstanding for each of the three and six months ended June 30, 2017 and 2016 , respectively.

Financial Instruments and Fair

Financial Instruments and Fair Value Measurements	6 Months Ended
	Jun. 30, 2017
Financial Instruments and Fair Value Measurements [Abstract]
Financial Instruments and Fair Value Measurements	Financial Instruments and Fair Value Measurements Fair value is defined as the price that would be received from selling an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. Fair value measurements are classified and disclosed in one of the following three categories: Level 1 — Valuations based on quoted prices in active markets for identical assets or liabilities. Level 2 — Valuations based on other than quoted prices in active markets for identical assets and liabilities, quoted prices for identical or similar assets or liabilities in inactive markets, or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities. Level 3 — Valuations based on inputs that are generally unobservable and typically reflect management’s estimates of assumptions that market participants would use in pricing the assets or liabilities. The following tables set forth by level within the fair value hierarchy the Company’s financial assets that were accounted for at fair value on a recurring basis: June 30, 2017 December 31, 2016 Level 1 Level 2 Total Level 1 Level 2 Total (in thousands) (in thousands) Cash equivalents: Money market funds $ 122,123 $ — $ 122,123 $ 2,733 $ — $ 2,733 Corporate notes and obligations — 18,367 18,367 — — — U.S. government and government agency obligations 9,898 7,094 16,992 151,660 149,976 301,636 Investments: Certificates of deposit — 9,975 9,975 — 12,088 12,088 Corporate notes and obligations — 73,647 73,647 — 28,892 28,892 Municipal obligations — 10,915 10,915 — 11,361 11,361 U.S. government and government agency obligations 46,497 100,516 147,013 4,579 30,852 35,431 $ 178,518 $ 220,514 $ 399,032 $ 158,972 $ 233,169 $ 392,141 The Company classifies its money market funds that are specifically backed by debt securities and U.S. government obligations as Level 1 instruments, due to the use of observable market prices for identical securities that are traded in active markets . Valuation of the Company’s marketable securities investments classified as Level 2 is achieved primarily through broker quotes when such investments exist in a non-active market. At June 30, 2017 and December 31, 2016 , the Company did not have any assets or liabilities that were valued using Level 3 inputs. For the three and six months ended June 30, 2017 and 2016 , there were no transfers of financial instruments between the levels. Realized gains and losses from the sale of investments were not significant during the three and six months ended June 30, 2017 and 2016 . The carrying amounts, gross unrealized gains and losses and estimated fair value of cash and cash equivalents and both short-term and long-term investments consisted of the following: June 30, 2017 December 31, 2016 Amortized Cost Unrealized Gains Unrealized Losses Carrying or Fair Value Amortized Unrealized Gains Unrealized Losses Carrying or (in thousands) (in thousands) Cash and cash equivalents: Cash $ 55,722 $ — $ — $ 55,722 $ 76,538 $ — $ — $ 76,538 Money market funds 122,123 — — 122,123 2,733 — — 2,733 Corporate notes and obligations 18,367 — — 18,367 — — — — U.S. government and government agency obligations 16,992 — — 16,992 301,631 8 (3 ) 301,636 $ 213,204 $ — $ — $ 213,204 $ 380,902 $ 8 $ (3 ) $ 380,907 Investments: Corporate notes and obligations $ 73,756 $ 5 $ (114 ) $ 73,647 $ 28,978 $ 1 $ (87 ) $ 28,892 Certificates of deposit 9,973 3 (1 ) 9,975 12,094 13 (19 ) 12,088 Municipal obligations 10,919 10 (14 ) 10,915 11,422 1 (62 ) 11,361 U.S. government and government agency obligations 147,166 3 (156 ) 147,013 35,502 8 (79 ) 35,431 $ 241,814 $ 21 $ (285 ) $ 241,550 $ 87,996 $ 23 $ (247 ) $ 87,772 The following table shows the gross unrealized losses and the related fair values of the Company’s investments that have been in a continuous unrealized loss position. The Company did not identify any investments as other-than-temporarily impaired at June 30, 2017 or December 31, 2016 . June 30, 2017 Less than 12 Months 12 Months or Greater Total Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses (in thousands) Corporate notes and obligations $ 63,252 $ (108 ) $ 659 $ (6 ) $ 63,911 $ (114 ) Certificates of deposit 3,150 — 485 (1 ) 3,635 (1 ) U.S. government, government agency, and municipal obligations 146,580 (165 ) 839 (5 ) 147,419 (170 ) $ 212,982 $ (273 ) $ 1,983 $ (12 ) $ 214,965 $ (285 ) December 31, 2016 Less than 12 Months 12 Months or Greater Total Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses (in thousands) Corporate notes and obligations $ 26,076 $ (87 ) $ — $ — $ 26,076 $ (87 ) Certificates of deposit 5,651 (19 ) — — 5,651 (19 ) U.S. government, government agency, and municipal obligations 180,138 (144 ) 385 — 180,523 (144 ) $ 211,865 $ (250 ) $ 385 $ — $ 212,250 $ (250 ) The following table summarizes the maturities of the Company’s investments at June 30, 2017 : Carrying or Fair Value (in thousands) Remainder of 2017 $ 66,031 2018 87,471 2019 64,577 2020 23,471 Total $ 241,550 Actual maturities may differ from the contractual maturities because borrowers may have the right to call or prepay certain obligations.

Balance Sheet Components

Balance Sheet Components	6 Months Ended
	Jun. 30, 2017
Statement of Financial Position [Abstract]
Balance Sheet Components	Balance Sheet Components Property and Equipment Property and equipment, net, consisted of the following: June 30, December 31, 2017 2016 (in thousands) Computer equipment and software (1) $ 156,390 $ 116,602 Furniture and fixtures 8,960 6,838 Leasehold improvements 28,229 18,532 Property and equipment 193,579 141,972 Accumulated depreciation and amortization (1) (65,273 ) (48,991 ) Subtotal 128,306 92,981 Internal-use software and other assets not placed in service 28,392 33,316 Property and equipment, net $ 156,698 $ 126,297 ________________ (1) Includes computer equipment and software under capital leases Computer equipment and software under capital leases, net, consisted of the following: June 30, December 31, 2017 2016 (in thousands) Computer equipment $ 8,715 $ 8,715 Software 1,517 1,517 Accumulated depreciation and amortization (8,033 ) (6,522 ) Net computer equipment and software under capital leases $ 2,199 $ 3,710 Depreciation and amortization expense for the three and six months ended June 30, 2017 was $8.9 million and $16.3 million , respectively. Depreciation and amortization expense for the three and six months ended June 30, 2016 was $4.7 million and $8.7 million , respectively. Depreciation and amortization of assets under capital leases which is included in the depreciation and amortization expense for the three and six months ended June 30, 2017 was $0.8 million and $1.5 million , respectively. Depreciation and amortization of assets under capital leases which is included in depreciation and amortization expense for the three and six months ended June 30, 2016 was $0.8 million and $1.6 million , respectively. Accrued and Other Current Liabilities Accrued and other current liabilities consisted of the following: June 30, December 31, 2017 2016 (in thousands) Accrued payroll and related expenses $ 16,400 $ 31,848 Accrued commissions 1,036 1,832 Accrued royalties 2,264 1,395 Sales and other taxes 1,328 2,327 Other accrued liabilities (1) 1,873 2,407 $ 22,901 $ 39,809 ________________ (1) Certain reclassifications of prior period amounts have been made to conform to the current period presentation, such reclassification did not materially change previously reported consolidated financial statements.

Goodwill and Intangible Assets

Goodwill and Intangible Assets	6 Months Ended
	Jun. 30, 2017
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets	Goodwill and Intangible Assets The carrying value of goodwill at June 30, 2017 was $74.5 million . There were no changes in the carrying value of goodwill during the three and six months ended June 30, 2017 . Intangible assets, net, consisted of the following: June 30, 2017 Gross Carrying Accumulated Net Intangibles Weighted Average Remaining Useful Life (in thousands) (in years) Assets subject to amortization: Developed technology $ 11,535 $ (8,849 ) $ 2,686 2.3 Trade names 331 (331 ) — 0.0 Customer relationships 19,400 (11,206 ) 8,194 3.6 Order backlog 370 (156 ) 214 2.3 Total assets subject to amortization: 31,636 (20,542 ) 11,094 3.2 Assets not subject to amortization: Trade name 4,039 — 4,039 $ 35,675 $ (20,542 ) $ 15,133 December 31, 2016 Gross Carrying Accumulated Net Intangibles Weighted Average Remaining Useful Life (in thousands) (in years) Assets subject to amortization: Developed technology $ 11,535 $ (8,183 ) $ 3,352 2.7 Trade names 331 (331 ) — 0.0 Customer relationships 19,400 (9,762 ) 9,638 4.0 Order backlog 370 (110 ) 260 2.8 Total assets subject to amortization: 31,636 (18,386 ) 13,250 3.6 Assets not subject to amortization: Trade name 4,039 — 4,039 $ 35,675 $ (18,386 ) $ 17,289 Amortization expense associated with intangible assets for the three and six months ended June 30, 2017 was $1.1 million and $2.2 million , respectively. Amortization expense associated with intangible assets for the three and six months ended June 30, 2016 was $1.5 million and $2.9 million , respectively. Future amortization expense for intangible assets at June 30, 2017 was as follows: Amortization (in thousands) Remainder of 2017 $ 2,138 2018 3,443 2019 3,166 2020 1,778 2021 314 2022 255 $ 11,094

Income Taxes

Income Taxes	6 Months Ended
	Jun. 30, 2017
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The Company computes its interim provision for income taxes by applying the estimated annual effective tax rate to the year-to-date income from recurring operations and adjusts the provision for discrete tax items recorded in the period. The Company evaluates and updates its estimated annual effective income tax rate on a quarterly basis. The estimated annual effective tax rate as of June 30, 2017 and 2016 was 35.8% and 37.4% , respectively. Three Months ended June 30, Six Months ended June 30, 2017 2016 2017 2016 (dollars in thousands) (dollars in thousands) Income tax provision (benefit) $ (836 ) $ 6,258 $ (5,429 ) $ 7,474 Effective tax rate (1) (4.7 )% 37.2 % (23.6 )% 36.3 % ________________ (1) The impact to the effective tax rate due to the benefit of excess stock award deductions allowable under ASU 2016-09 is 40.9% and 60.1% for the three and six months ended June 30, 2017, respectively. The difference between the federal statutory rate of 35% and the Company’s estimated effective tax rate for the three and six months ended June 30, 2017 was primarily due to the benefit of excess stock award deductions in tax expense allowable under ASU 2016-09, R&D credits, and non-deductible stock-based compensation expenses. As described in Note 2 “Basis of Presentation and Significant Accounting Policies”, the Company adopted ASU 2016-09 on January 1, 2017, which requires the excess tax benefits or deficiencies to be reflected in the Consolidated Statements of Comprehensive Income as a component of the provision for income taxes, which were previously recognized in equity. Total excess tax benefits recognized for the three and six months ended June 30, 2017 was $7.3 million and $13.8 million , respectively. The Company’s tax positions are subject to income tax audits by multiple tax jurisdictions. The Company accounts for uncertain tax positions and believes that it has provided adequate reserves for its unrecognized tax benefits for all tax years still open for assessment. The Company also believes that it does not have any tax positions for which it is reasonably possible that the total amounts of unrecognized tax benefits will significantly increase or decrease within the next twelve months. The Company has a policy to classify accrued interest and penalties associated with uncertain tax positions together with the related liability in the balance sheet, and to include the expenses incurred related to such accruals in the provision for income taxes. There were no interest or penalties included in the provision for income taxes during the six months ended June 30, 2017 and 2016 .

Commitments and Contingencies

Commitments and Contingencies	6 Months Ended
	Jun. 30, 2017
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Leases As of June 30, 2017 , the Company leased eight facilities under operating lease arrangements. The lease expiration dates range from September 2019 to December 2025 . Certain leases contain escalation clauses calling for increased rents. The Company recognizes rent expense on a straight-line basis over the lease period and has recorded deferred rent for the difference between rent payments and rent expense recognized. Legal Proceedings From time to time, the Company is involved in litigation that it believes is of the type common to companies engaged in the Company’s line of business, including commercial and employment disputes. As of the date of this Quarterly Report on Form 10-Q, the Company is not involved in any pending legal proceedings whose outcome the Company expects to have a material adverse effect on its financial position, results of operations or cash flows. However, litigation is unpredictable and excessive verdicts, both in the form of monetary damages and injunctions, could occur. In the future, litigation could result in substantial costs and diversion of resources, and the Company could incur judgments or enter into settlements of claims that could have a material adverse effect on its business.

Equity and Stock Incentive Plan

Equity and Stock Incentive Plans	6 Months Ended
	Jun. 30, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Equity and Stock Incentive Plans	Equity and Stock Incentive Plans The Company recognized stock-based compensation expense related to awards granted under its 2009 Stock Option and Incentive Plan (the “2009 Plan”), 2011 Equity Incentive Award Plan (the “ 2011 Plan ”), and ESPP . Total stock-based compensation expense recognized consisted of: Three Months ended June 30, Six Months ended June 30, 2017 2016 2017 2016 (in thousands) Cost of revenues $ 1,675 $ 1,132 $ 3,119 $ 2,102 Sales and marketing 1,258 1,059 2,434 1,937 Research and development 2,098 1,944 3,959 3,448 General and administrative 3,479 3,883 6,849 7,221 $ 8,510 $ 8,018 $ 16,361 $ 14,708 2009 Stock Option and Incentive Plan and 2011 Equity Incentive Award Plan Stock Options The following table summarizes the Company’s stock option activity under the 2009 Plan and 2011 Plan : Number of Shares Weighted Average Exercise Price Weighted Average Remaining Contractual Term Aggregate Intrinsic Value (in years) (in thousands) Outstanding at January 1, 2017 1,885,332 $ 26.21 6.34 $ 108,356 Granted 6,601 94.66 Exercised (249,214 ) 23.81 Forfeited or expired (14,787 ) 39.74 Outstanding at June 30, 2017 1,627,932 $ 26.73 5.85 $ 135,413 Ending vested and expected to vest at June 30, 2017 1,617,046 $ 26.59 5.84 $ 134,729 Exercisable at June 30, 2017 1,315,908 $ 22.78 5.48 $ 114,659 There were no stock options granted during the three months ended June 30, 2017 . Stock options granted during the six months ended June 30, 2017 were made under the 2011 Plan. There were no grants under the 2009 Plan during the six months ended June 30, 2017 . The aggregate intrinsic value of the stock options outstanding at June 30, 2017 represents the value of the Company’s closing stock price of $109.91 on June 30, 2017 in excess of the exercise price multiplied by the number of options outstanding for options that were in-the-money. Options outstanding that are expected to vest are net of estimated future option forfeitures. As of June 30, 2017 , total unrecognized stock-based compensation expense related to unvested stock options, adjusted for estimated forfeitures, was $6.1 million and is expected to be recognized over a weighted average period of 1.4 years. Restricted Stock Units, Performance-Vesting Restricted Stock Units, and Performance Awards The following table summarizes the Company’s RSU , Performance Award and performance-vesting RSU activity: RSUs Performance Awards and Performance-Vesting RSUs Number of Shares Weighted Average Grant Date Fair Value Per Share Number of Shares Weighted Average Grant Date Fair Value Per Share Outstanding at January 1, 2017 1,025,115 $ 64.47 407,650 $ 46.77 Granted 430,605 103.76 41,201 94.66 Released (275,361 ) 54.91 (145,651 ) 39.53 Forfeited or expired (60,945 ) 76.99 — — Outstanding at June 30, 2017 1,119,414 $ 81.25 303,200 $ 56.76 Ending vested and expected to vest at June 30, 2017 967,205 303,200 RSU s, performance-vesting RSUs and Performance Awards that are expected to vest are presented net of estimated future forfeitures. RSU s released during the six months ended June 30, 2017 and 2016 had an aggregate intrinsic value of $29.2 million and $14.6 million , respectively, and had an aggregate grant-date fair value of $15.1 million and $7.0 million , respectively. Performance-vesting RSUs and Performance Awards released during the six months ended June 30, 2017 and 2016 had an aggregate intrinsic value of $13.7 million and $9.3 million , respectively, and had an aggregate grant-date fair value of $5.8 million and $3.5 million , respectively. The number of RSU s released includes shares that the Company withheld on behalf of employees to satisfy the minimum statutory tax withholding requirements. As of June 30, 2017 , total unrecognized compensation expense related to unvested RSU s, performance-vesting RSUs and Performance Awards was $77.2 million and is expected to be recognized over a weighted average period of 2.7 years. Employee Stock Purchase Plan For the six months ended June 30, 2017 and 2016 , employees purchased 52,619 shares and 47,819 shares, respectively, under the ESPP for a total of $4.3 million and $2.9 million , respectively. As of June 30, 2017 , unrecognized compensation expense related to the current semi-annual ESPP offering period, which ends on August 31, 2017 , was $0.5 million and is expected to be recognized over two months. Valuation Information The fair value of stock options and stock purchase rights granted under the 2009 Plan, the 2011 Plan , and the ESPP were estimated at the date of grant using the Black-Scholes option valuation model with the following weighted average assumptions: Three months ended June 30, Six Months ended June 30, 2017 2016 2017 2016 Stock option plans: Risk-free interest rate — % — % 2.04 % 1.38 % Expected life of options (in years) — — 6.08 6.08 Expected dividend yield — % — % — % — % Volatility — % — % 48 % 47 % Employee Stock Purchase Plan: Risk-free interest rate — % — % 0.69 % 0.36 % Expected life of options (in years) — — 0.50 0.50 Expected dividend yield — % — % — % — % Volatility — % — % 35 % 46 % Common Stock The following numbers of shares of common stock were reserved and available for future issuance at June 30, 2017 : Reserved Shares Options and awards outstanding under stock option plans 3,050,546 Shares available for future grant under the 2011 Plan 5,241,658 Shares available under the ESPP 1,683,080 Total 9,975,284 In February 2017 , 336,856 additional shares were reserved under the ESPP , and 1,684,282 additional shares were reserved under the 2011 Plan , pursuant to the automatic increase provisions in each plan. Stock Repurchase Program In May 2014 , the Company’s board of directors approved a stock repurchase program under which the Company is authorized to repurchase up to $75.0 million of its common stock in which all shares are retired upon repurchase. This program ended in May 2017 and the Company did not repurchase any shares during the first five months of 2017 .

Segment Information

Segment Information	6 Months Ended
	Jun. 30, 2017
Segment Reporting [Abstract]
Segment Information	Segment Information The Company operates in one industry—mortgage-related software and services. The Company’s chief operating decision maker is its chief executive officer, who makes decisions about resource allocation and reviews financial information presented on a consolidated basis. Accordingly, the Company has determined that it has a single reporting segment and operating unit structure, specifically, technology-enabled solutions to help streamline and automate the residential mortgage origination process for its network participants. The Company is organized primarily on the basis of service lines. Supplemental disclosure of revenues by type is as follows: Three months ended June 30, Six Months ended June 30, 2017 2016 2017 2016 (in thousands) On-demand revenues $ 104,125 $ 89,906 $ 197,127 $ 163,005 On-premise revenues — 192 — 718 $ 104,125 $ 90,098 $ 197,127 $ 163,723 On-demand revenue is generated from company-hosted software subscriptions that customers access through the Internet. On-demand revenue is comprised of fees for software services sold both as a subscription and transactionally, including fees based on a per closed loan, or success basis, subject to monthly base fees, which the Company refers to as Success-Based Pricing; Ellie Mae Network fees; education and training, loan product, policy and guideline data and analytics services under the AllRegs brand; and professional services which include consulting, implementation, and training services. On-premise revenue is generated from maintenance services, sales of customer-hosted Encompass software licenses, and related professional services. As of June 30, 2016, the Company completed the migration to its on-demand Encompass offering, and the Company does not expect to generate on-premise revenues in the future.

Basis of Presentation and Sig16

Basis of Presentation and Significant Accounting Policies (Policies)	6 Months Ended
	Jun. 30, 2017
Accounting Policies [Abstract]
Principles of Consolidation [Policy Text Block]	Principles of Consolidation The condensed consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries. All intercompany balances and transactions have been eliminated.
Use of Estimates, Policy [Policy Text Block]	Use of Estimates The preparation of condensed consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Management evaluates estimates on a regular basis including those relating to revenue recognition, allowance for doubtful accounts, goodwill, intangible assets, valuation of deferred income taxes, stock-based compensation, and unrecognized tax benefits, among others. Actual results could differ from those estimates, and such differences may have a material impact on the Company’s condensed consolidated financial statements and footnotes.
Significant Accounting Policies [Text Block]	Significant Accounting Policies The Company’s significant accounting policies are described in Note 2 of the Notes to Consolidated Financial Statements in its 2016 Form 10-K . There have been no significant changes to these policies during the six months ended June 30, 2017 , except in relation to the Company’s adoption of ASU No. 2016-09, Compensation—Stock Compensation (Topic 718): Improvements to Employee Shared-Based Payment Accounting (“ASU 2016-09”) on January 1, 2017, whereby the Company now records excess tax benefits and tax deficiencies as an income tax benefit or expense when stock awards vest or settle, and the Company no longer classifies the cash flow from excess tax benefits as a reduction from operating cash flows.
Comprehensive Income [Policy Text Block]	Comprehensive Income Comprehensive income consists of net income and other comprehensive income . Other comprehensive income includes certain changes in equity that are excluded from net income, specifically unrealized gains on marketable securities. Except for net realized gain on investments , which was not significant, there were no reclassifications out of accumulated other comprehensive income that affected net income during the three and six months ended June 30, 2017 and 2016
Recent Accounting Pronouncements [Policy Text Block]	Recent Accounting Pronouncements In May 2014, the Financial Accounting Standards Board (“ FASB ”) issued Accounting Standards Update (“ ASU ”) No. 2014-09, Revenue from Contracts with Customers (“ ASU 2014-09 ”), which outlines a single comprehensive model for entities to use in accounting for revenue arising from contracts with customers and supersedes most current revenue recognition guidance, including industry-specific guidance. This standard also requires significantly expanded disclosures about revenue recognition. The effective date for public entities is fiscal years beginning after December 15, 2017 and early adoption is allowed. The Company will adopt the new standard as of January 1, 2018. The guidance permits two methods of adoption: retrospectively to each prior reporting period presented (full retrospective method), or retrospectively with the cumulative effect of initially applying the guidance recognized at the date of initial application (modified retrospective method). The Company is continuing to evaluate the impact of the new standard on its accounting policies, processes, and systems, including impacts from guidance issued by the FASB Transition Resource Group as part of its November 2016 meeting. The Company has assigned internal resources, engaged a third-party service provider, and is in the process of finalizing the evaluation and completing the implementation. The Company expects an impact to certain revenue streams due to the removal of the current limitation on contingent revenue, which may affect the timing of revenues being recognized for certain contracts. The Company has also identified potential impacts to the costs to obtain contracts, which is primarily comprised of sales commissions and the related fringe benefits associated with non-cancelable contracts. The Company expects to capitalize certain costs that are expensed under the current standard, and the Company expects an increase in the amortization period over which the capitalized costs will be recognized. The Company is continuing to evaluate the impact to the expected period of benefit under ASU 2014-09. The Company is evaluating the adoption method based on various factors including the significance of the impact of the new standard on the Company’s financial results and system capabilities. This evaluation is in process, and the adoption method has not been determined. In January 2016, the FASB issued ASU No. 2016-01, Financial Instruments-Overall: Recognition and Measurement of Financial Assets and Financial Liabilities (“ASU 2016-01”), which updates certain aspects of recognition, measurement, presentation and disclosure of financial instruments. ASU 2016-01 is effective for fiscal years, and interim periods within those years, beginning after December 15, 2017, and early adoption is not permitted. The Company is currently evaluating the impact of this accounting standard update on its consolidated financial statements. In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842) (“ASU 2016-02”), which requires lessees to put most leases on their balance sheets but recognize the expenses on their income statements in a manner similar to current practice. ASU 2016-02 states that a lessee would recognize a lease liability for the obligation to make lease payments and a right-to-use asset for the right to use the underlying asset for the lease term. The standard is effective for interim and annual periods beginning after December 15, 2018, and early adoption is permitted. The Company currently does not intend to early adopt and is evaluating the impact of this accounting standard update on its consolidated financial statements. In May 2017, the FASB issued ASU No. 2017-09, Compensation – Stock Compensation (Topic 718): Scope of Modification Accounting (“ASU 2017-09”), which provides guidance on determining which changes to the terms and conditions of share-based payment awards require an entity to apply modification accounting under Topic 718. ASU 2017-09 is effective for interim and annual periods beginning after December 15, 2017, and early adoption is permitted. The Company is currently evaluating the impact of this accounting standard update on its consolidated financial statements. New Standards Adopted In January 2017, the FASB issued ASU No. 2017-01, Business Combinations (Topic 805): Clarifying the Definition of a Business . This standard clarifies the definition of a business and is intended to help companies evaluate whether transactions should be accounted for as acquisitions (or disposals) of assets or businesses. The standard is effective for interim and annual periods beginning after December 15, 2017 and early adoption is permitted under certain circumstances. The standard should be applied prospectively as of the beginning of the period of adoption. The Company has elected to early adopt the standard on April 1, 2017. The adoption did not have an impact on the Company’s consolidated financial statements as there have been no business combinations in fiscal year 2017 to date.

Net Income Per Share of Commo17

Net Income Per Share of Common Stock (Tables)	6 Months Ended
	Jun. 30, 2017
Earnings Per Share [Abstract]
Components of net income (loss) per share of common stock	The components of net income per share of common stock were as follows: Three Months ended June 30, Six Months ended June 30, 2017 2016 2017 2016 (in thousands, except share and per share amounts) Net income $ 18,823 $ 10,588 $ 28,422 $ 13,094 Basic shares: Weighted average common shares outstanding 34,028,553 29,578,630 33,866,233 29,643,779 Diluted shares: Weighted average shares used to compute basic net income per share 34,028,553 29,578,630 33,866,233 29,643,779 Effect of potentially dilutive securities: Employee stock options, RSUs, performance-vesting RSUs, Performance Awards and ESPP shares 1,880,260 1,609,969 1,905,332 1,635,733 Weighted average shares used to compute diluted net income per share 35,908,813 31,188,599 35,771,565 31,279,512 Net income per share: Basic $ 0.55 $ 0.36 $ 0.84 $ 0.44 Diluted $ 0.52 $ 0.34 $ 0.79 $ 0.42
Common shares excluded from computation of diluted net income (loss) per share	The following potential weighted average common shares were excluded from the computation of diluted net income per share, as their effect would have been anti-dilutive: Three Months ended June 30, Six Months ended June 30, 2017 2016 2017 2016 Employee stock options and awards 6,601 31,721 110,587 237,177

Financial Instruments and Fai18

Financial Instruments and Fair Value Measurements (Tables)	6 Months Ended
	Jun. 30, 2017
Financial Instruments and Fair Value Measurements [Abstract]
Fair value hierarchy of Company's financial assets on recurring basis	The following tables set forth by level within the fair value hierarchy the Company’s financial assets that were accounted for at fair value on a recurring basis: June 30, 2017 December 31, 2016 Level 1 Level 2 Total Level 1 Level 2 Total (in thousands) (in thousands) Cash equivalents: Money market funds $ 122,123 $ — $ 122,123 $ 2,733 $ — $ 2,733 Corporate notes and obligations — 18,367 18,367 — — — U.S. government and government agency obligations 9,898 7,094 16,992 151,660 149,976 301,636 Investments: Certificates of deposit — 9,975 9,975 — 12,088 12,088 Corporate notes and obligations — 73,647 73,647 — 28,892 28,892 Municipal obligations — 10,915 10,915 — 11,361 11,361 U.S. government and government agency obligations 46,497 100,516 147,013 4,579 30,852 35,431 $ 178,518 $ 220,514 $ 399,032 $ 158,972 $ 233,169 $ 392,141
Schedule of Available-for-sale Securities Reconciliation	The carrying amounts, gross unrealized gains and losses and estimated fair value of cash and cash equivalents and both short-term and long-term investments consisted of the following: June 30, 2017 December 31, 2016 Amortized Cost Unrealized Gains Unrealized Losses Carrying or Fair Value Amortized Unrealized Gains Unrealized Losses Carrying or (in thousands) (in thousands) Cash and cash equivalents: Cash $ 55,722 $ — $ — $ 55,722 $ 76,538 $ — $ — $ 76,538 Money market funds 122,123 — — 122,123 2,733 — — 2,733 Corporate notes and obligations 18,367 — — 18,367 — — — — U.S. government and government agency obligations 16,992 — — 16,992 301,631 8 (3 ) 301,636 $ 213,204 $ — $ — $ 213,204 $ 380,902 $ 8 $ (3 ) $ 380,907 Investments: Corporate notes and obligations $ 73,756 $ 5 $ (114 ) $ 73,647 $ 28,978 $ 1 $ (87 ) $ 28,892 Certificates of deposit 9,973 3 (1 ) 9,975 12,094 13 (19 ) 12,088 Municipal obligations 10,919 10 (14 ) 10,915 11,422 1 (62 ) 11,361 U.S. government and government agency obligations 147,166 3 (156 ) 147,013 35,502 8 (79 ) 35,431 $ 241,814 $ 21 $ (285 ) $ 241,550 $ 87,996 $ 23 $ (247 ) $ 87,772
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	The following table shows the gross unrealized losses and the related fair values of the Company’s investments that have been in a continuous unrealized loss position. The Company did not identify any investments as other-than-temporarily impaired at June 30, 2017 or December 31, 2016 . June 30, 2017 Less than 12 Months 12 Months or Greater Total Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses (in thousands) Corporate notes and obligations $ 63,252 $ (108 ) $ 659 $ (6 ) $ 63,911 $ (114 ) Certificates of deposit 3,150 — 485 (1 ) 3,635 (1 ) U.S. government, government agency, and municipal obligations 146,580 (165 ) 839 (5 ) 147,419 (170 ) $ 212,982 $ (273 ) $ 1,983 $ (12 ) $ 214,965 $ (285 ) December 31, 2016 Less than 12 Months 12 Months or Greater Total Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses (in thousands) Corporate notes and obligations $ 26,076 $ (87 ) $ — $ — $ 26,076 $ (87 ) Certificates of deposit 5,651 (19 ) — — 5,651 (19 ) U.S. government, government agency, and municipal obligations 180,138 (144 ) 385 — 180,523 (144 ) $ 211,865 $ (250 ) $ 385 $ — $ 212,250 $ (250 )
Summary of the maturities of the Company's investments	The following table summarizes the maturities of the Company’s investments at June 30, 2017 : Carrying or Fair Value (in thousands) Remainder of 2017 $ 66,031 2018 87,471 2019 64,577 2020 23,471 Total $ 241,550

Balance Sheet Components (Table

Balance Sheet Components (Tables)	6 Months Ended
	Jun. 30, 2017
Statement of Financial Position [Abstract]
Schedule of Property and Equipment	Property and equipment, net, consisted of the following: June 30, December 31, 2017 2016 (in thousands) Computer equipment and software (1) $ 156,390 $ 116,602 Furniture and fixtures 8,960 6,838 Leasehold improvements 28,229 18,532 Property and equipment 193,579 141,972 Accumulated depreciation and amortization (1) (65,273 ) (48,991 ) Subtotal 128,306 92,981 Internal-use software and other assets not placed in service 28,392 33,316 Property and equipment, net $ 156,698 $ 126,297 ________________ (1) Includes computer equipment and software under capital leases Computer equipment and software under capital leases, net, consisted of the following: June 30, December 31, 2017 2016 (in thousands) Computer equipment $ 8,715 $ 8,715 Software 1,517 1,517 Accumulated depreciation and amortization (8,033 ) (6,522 ) Net computer equipment and software under capital leases $ 2,199 $ 3,710
Schedule of Accounts Payable and Accrued Liabilities	Accrued and other current liabilities consisted of the following: June 30, December 31, 2017 2016 (in thousands) Accrued payroll and related expenses $ 16,400 $ 31,848 Accrued commissions 1,036 1,832 Accrued royalties 2,264 1,395 Sales and other taxes 1,328 2,327 Other accrued liabilities (1) 1,873 2,407 $ 22,901 $ 39,809 ________________ (1) Certain reclassifications of prior period amounts have been made to conform to the current period presentation, such reclassification did not materially change previously reported consolidated financial statements.

Goodwill and Intangible Assets

Goodwill and Intangible Assets (Tables)	6 Months Ended
	Jun. 30, 2017
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Intangible Assets, Net	Intangible assets, net, consisted of the following: June 30, 2017 Gross Carrying Accumulated Net Intangibles Weighted Average Remaining Useful Life (in thousands) (in years) Assets subject to amortization: Developed technology $ 11,535 $ (8,849 ) $ 2,686 2.3 Trade names 331 (331 ) — 0.0 Customer relationships 19,400 (11,206 ) 8,194 3.6 Order backlog 370 (156 ) 214 2.3 Total assets subject to amortization: 31,636 (20,542 ) 11,094 3.2 Assets not subject to amortization: Trade name 4,039 — 4,039 $ 35,675 $ (20,542 ) $ 15,133 December 31, 2016 Gross Carrying Accumulated Net Intangibles Weighted Average Remaining Useful Life (in thousands) (in years) Assets subject to amortization: Developed technology $ 11,535 $ (8,183 ) $ 3,352 2.7 Trade names 331 (331 ) — 0.0 Customer relationships 19,400 (9,762 ) 9,638 4.0 Order backlog 370 (110 ) 260 2.8 Total assets subject to amortization: 31,636 (18,386 ) 13,250 3.6 Assets not subject to amortization: Trade name 4,039 — 4,039 $ 35,675 $ (18,386 ) $ 17,289
Minimum future amortization expense for intangible assets	Future amortization expense for intangible assets at June 30, 2017 was as follows: Amortization (in thousands) Remainder of 2017 $ 2,138 2018 3,443 2019 3,166 2020 1,778 2021 314 2022 255 $ 11,094

Income Taxes Income Taxes (Tabl

Income Taxes Income Taxes (Tables)	6 Months Ended
	Jun. 30, 2017
Income Tax Disclosure [Abstract]
Schedule of Components of Income Tax Provision	The estimated annual effective tax rate as of June 30, 2017 and 2016 was 35.8% and 37.4% , respectively. Three Months ended June 30, Six Months ended June 30, 2017 2016 2017 2016 (dollars in thousands) (dollars in thousands) Income tax provision (benefit) $ (836 ) $ 6,258 $ (5,429 ) $ 7,474 Effective tax rate (1) (4.7 )% 37.2 % (23.6 )% 36.3 % ________________ (1) The impact to the effective tax rate due to the benefit of excess stock award deductions allowable under ASU 2016-09 is 40.9% and 60.1% for the three and six months ended June 30, 2017, respectively.

Equity and Stock Incentive Pl22

Equity and Stock Incentive Plans (Tables)	6 Months Ended
	Jun. 30, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock-based compensation expense	Total stock-based compensation expense recognized consisted of: Three Months ended June 30, Six Months ended June 30, 2017 2016 2017 2016 (in thousands) Cost of revenues $ 1,675 $ 1,132 $ 3,119 $ 2,102 Sales and marketing 1,258 1,059 2,434 1,937 Research and development 2,098 1,944 3,959 3,448 General and administrative 3,479 3,883 6,849 7,221 $ 8,510 $ 8,018 $ 16,361 $ 14,708
Summary of Company's stock option activities	The following table summarizes the Company’s stock option activity under the 2009 Plan and 2011 Plan : Number of Shares Weighted Average Exercise Price Weighted Average Remaining Contractual Term Aggregate Intrinsic Value (in years) (in thousands) Outstanding at January 1, 2017 1,885,332 $ 26.21 6.34 $ 108,356 Granted 6,601 94.66 Exercised (249,214 ) 23.81 Forfeited or expired (14,787 ) 39.74 Outstanding at June 30, 2017 1,627,932 $ 26.73 5.85 $ 135,413 Ending vested and expected to vest at June 30, 2017 1,617,046 $ 26.59 5.84 $ 134,729 Exercisable at June 30, 2017 1,315,908 $ 22.78 5.48 $ 114,659
Summary of RSU activities	The following table summarizes the Company’s RSU , Performance Award and performance-vesting RSU activity: RSUs Performance Awards and Performance-Vesting RSUs Number of Shares Weighted Average Grant Date Fair Value Per Share Number of Shares Weighted Average Grant Date Fair Value Per Share Outstanding at January 1, 2017 1,025,115 $ 64.47 407,650 $ 46.77 Granted 430,605 103.76 41,201 94.66 Released (275,361 ) 54.91 (145,651 ) 39.53 Forfeited or expired (60,945 ) 76.99 — — Outstanding at June 30, 2017 1,119,414 $ 81.25 303,200 $ 56.76 Ending vested and expected to vest at June 30, 2017 967,205 303,200
Schedule of Stock Options and Employee Stock Purchase Plan Valuation Assumptions	The fair value of stock options and stock purchase rights granted under the 2009 Plan, the 2011 Plan , and the ESPP were estimated at the date of grant using the Black-Scholes option valuation model with the following weighted average assumptions: Three months ended June 30, Six Months ended June 30, 2017 2016 2017 2016 Stock option plans: Risk-free interest rate — % — % 2.04 % 1.38 % Expected life of options (in years) — — 6.08 6.08 Expected dividend yield — % — % — % — % Volatility — % — % 48 % 47 % Employee Stock Purchase Plan: Risk-free interest rate — % — % 0.69 % 0.36 % Expected life of options (in years) — — 0.50 0.50 Expected dividend yield — % — % — % — % Volatility — % — % 35 % 46 %
Schedule of Shares of Common Stock Available For Future Issuance Under Stock Option Plans	The following numbers of shares of common stock were reserved and available for future issuance at June 30, 2017 : Reserved Shares Options and awards outstanding under stock option plans 3,050,546 Shares available for future grant under the 2011 Plan 5,241,658 Shares available under the ESPP 1,683,080 Total 9,975,284

Segment Information (Tables)

Segment Information (Tables)	6 Months Ended
	Jun. 30, 2017
Segment Reporting [Abstract]
Supplemental disclosure of revenue by service type	Supplemental disclosure of revenues by type is as follows: Three months ended June 30, Six Months ended June 30, 2017 2016 2017 2016 (in thousands) On-demand revenues $ 104,125 $ 89,906 $ 197,127 $ 163,005 On-premise revenues — 192 — 718 $ 104,125 $ 90,098 $ 197,127 $ 163,723

Basis of Presentation and Sig24

Basis of Presentation and Significant Accounting Policies (Details Textual) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net cash provided by operating activities	$ 35,021	$ 23,206
Net cash provided by (used in) financing activities	$ (1,762)	3,010
ASU No. 2016-09 [Member] | Reclassification [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net cash provided by operating activities		1,200
Net cash provided by (used in) financing activities		$ (1,200)

Net Income Per Share of Commo25

Net Income Per Share of Common Stock (Details Table) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Components of net income (loss) per share
Net income	$ 18,823	$ 10,588	$ 28,422	$ 13,094
Basic shares:
Weighted average common shares outstanding	34,028,553	29,578,630	33,866,233	29,643,779
Diluted shares:
Weighted average common shares outstanding	34,028,553	29,578,630	33,866,233	29,643,779
Effect of potentially dilutive securities:
Employee stock options, RSUs, performance-vesting RSUs, Performance Awards and ESPP shares	1,880,260	1,609,969	1,905,332	1,635,733
Weighted average shares used to compute diluted net income per share	35,908,813	31,188,599	35,771,565	31,279,512
Net income (loss) per share:
Basic	$ 0.55	$ 0.36	$ 0.84	$ 0.44
Diluted	$ 0.52	$ 0.34	$ 0.79	$ 0.42

Net Income Per Share of Commo26

Net Income Per Share of Common Stock (Details Table 1) - shares	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Employee Stock Options and Awards [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive securities excluded from computation of earnings per share amount	6,601	31,721	110,587	237,177
Performance Based Awards [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive securities excluded from computation of earnings per share amount	61,494	136,598	61,494	136,598

Financial Instruments and Fai27

Financial Instruments and Fair Value Measurements (Fair Value Hierarchy) (Details) - Fair Value, Measurements, Recurring [Member] - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets, fair value disclosure	$ 399,032	$ 392,141
Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments	46,497	4,579
Assets, fair value disclosure	178,518	158,972
Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments	100,516	30,852
Assets, fair value disclosure	220,514	233,169
Money market funds [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents	122,123	2,733
Money market funds [Member] | Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents	122,123	2,733
Money market funds [Member] | Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents	0	0
Certificates of deposit [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments	9,975	12,088
Certificates of deposit [Member] | Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments	0	0
Certificates of deposit [Member] | Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments	9,975	12,088
Corporate notes and obligations [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents	18,367	0
Investments	73,647	28,892
Corporate notes and obligations [Member] | Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents		0
Investments	0	0
Corporate notes and obligations [Member] | Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents	18,367	0
Investments	73,647	28,892
Municipal obligations [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments	10,915	11,361
Municipal obligations [Member] | Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments	0	0
Municipal obligations [Member] | Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments	10,915	11,361
U.S. government and government agency obligations [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents	16,992	301,636
Investments	147,013	35,431
U.S. government and government agency obligations [Member] | Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents	9,898	151,660
U.S. government and government agency obligations [Member] | Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents	$ 7,094	$ 149,976

Financial Instruments and Fai28

Financial Instruments and Fair Value Measurements (Carrying Amounts and Fair Value) (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016	Jun. 30, 2016	Dec. 31, 2015
Cash and Cash Equivalents [Abstract]
Cash and cash equivalents, carrying value	$ 213,204	$ 380,907	$ 44,609	$ 34,396
Available-for-sale Securities, Fair Value to Amortized Cost Basis [Abstract]
Available-for-sale Securities, Amortized Cost	241,814	87,996
Available-For-Sale Securities, Accumulated Gross Unrealized Gain	21	23
Available-For-Sale Securities, Accumulated Gross Unrealized Loss	(285)	(247)
Available-for-sale Securities	241,550	87,772
Corporate notes and obligations [Member]
Available-for-sale Securities, Fair Value to Amortized Cost Basis [Abstract]
Available-for-sale Securities, Amortized Cost	73,756	28,978
Available-For-Sale Securities, Accumulated Gross Unrealized Gain	5	1
Available-For-Sale Securities, Accumulated Gross Unrealized Loss	(114)	(87)
Available-for-sale Securities	73,647	28,892
Certificates of deposit [Member]
Available-for-sale Securities, Fair Value to Amortized Cost Basis [Abstract]
Available-for-sale Securities, Amortized Cost	9,973	12,094
Available-For-Sale Securities, Accumulated Gross Unrealized Gain	3	13
Available-For-Sale Securities, Accumulated Gross Unrealized Loss	(1)	(19)
Available-for-sale Securities	9,975	12,088
Municipal obligations [Member]
Available-for-sale Securities, Fair Value to Amortized Cost Basis [Abstract]
Available-for-sale Securities, Amortized Cost	10,919	11,422
Available-For-Sale Securities, Accumulated Gross Unrealized Gain	10	1
Available-For-Sale Securities, Accumulated Gross Unrealized Loss	(14)	(62)
Available-for-sale Securities	10,915	11,361
U.S. government and government agency obligations [Member]
Available-for-sale Securities, Fair Value to Amortized Cost Basis [Abstract]
Available-for-sale Securities, Amortized Cost	147,166	35,502
Available-For-Sale Securities, Accumulated Gross Unrealized Gain	3	8
Available-For-Sale Securities, Accumulated Gross Unrealized Loss	(156)	(79)
Available-for-sale Securities	147,013	35,431
Cash [Member]
Cash and Cash Equivalents [Abstract]
Cash	55,722	76,538
Cash Equivalents [Member]
Cash and Cash Equivalents [Abstract]
Money market funds	122,123	2,733
Cash and cash equivalents, amortized cost	213,204	380,902
Cash and cash equivalents, carrying value	213,204	380,907
Available-for-sale Securities, Fair Value to Amortized Cost Basis [Abstract]
Available-For-Sale Securities, Accumulated Gross Unrealized Gain	0	8
Available-For-Sale Securities, Accumulated Gross Unrealized Loss	0	(3)
Cash Equivalents [Member] | Corporate notes and obligations [Member]
Cash and Cash Equivalents [Abstract]
Cash and cash equivalents, amortized cost	18,367
Cash equivalents, carrying value	18,367
Cash Equivalents [Member] | U.S. government and government agency obligations [Member]
Cash and Cash Equivalents [Abstract]
Cash and cash equivalents, amortized cost	16,992	301,631
Cash equivalents, carrying value	16,992	301,636
Available-for-sale Securities, Fair Value to Amortized Cost Basis [Abstract]
Available-For-Sale Securities, Accumulated Gross Unrealized Gain	0	8
Available-For-Sale Securities, Accumulated Gross Unrealized Loss	$ 0	$ (3)

Financial Instruments and Fai29

Financial Instruments and Fair Value Measurements (Continuous Unrealized Loss) (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Schedule of Available-for-sale Securities [Line Items]
Less than Twelve Months, Fair Value	$ 212,982	$ 211,865
Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	273	250
Twelve Months or Longer, Fair Value	1,983	385
Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	12	0
Fair Value	214,965	212,250
Continuous Unrealized Loss Position, Accumulated Loss	285	250
Corporate notes and obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Less than Twelve Months, Fair Value	63,252	26,076
Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	108	87
Twelve Months or Longer, Fair Value	659	0
Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	6	0
Fair Value	63,911	26,076
Continuous Unrealized Loss Position, Accumulated Loss	114	87
Certificates of deposit [Member]
Schedule of Available-for-sale Securities [Line Items]
Less than Twelve Months, Fair Value	3,150	5,651
Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	0	19
Twelve Months or Longer, Fair Value	485	0
Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	1	0
Fair Value	3,635	5,651
Continuous Unrealized Loss Position, Accumulated Loss	1	19
U.S. government and government agency obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Less than Twelve Months, Fair Value	146,580	180,138
Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	165	144
Twelve Months or Longer, Fair Value	839	385
Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	5	0
Fair Value	147,419	180,523
Continuous Unrealized Loss Position, Accumulated Loss	$ 170	$ 144

Financial Instruments and Fai30

Financial Instruments and Fair Value Measurements (Summary of Investment Maturities) (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Maturities of the Company's investments
Available-for-sale Securities, Debt Maturities, Remainder of Fiscal Year, Fair Value	$ 66,031
Available For Sale Securities, Debt Maturities, Next Fiscal Year, Fair Value	87,471
Available For Sale Securities, Debt Maturities, In Two Years, Fair Value	64,577
Available For Sale Securities, Debt Maturities, In Three Years, Fair Value	23,471
Total	$ 241,550	$ 87,772

Financial Instruments and Fai31

Financial Instruments and Fair Value Measurements (Details Textual) - USD ($)	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Financial Instruments and Fair Value Measurements [Abstract]
Transfers of financial instruments between fair value levels	$ 0	$ 0

Balance Sheet Components (Prope

Balance Sheet Components (Property and Equipment) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 193,579		$ 193,579		$ 141,972
Accumulated depreciation and amortization	65,273		65,273		48,991
Property and equipment, gross subtotal	128,306		128,306		92,981
Internal-use software and other assets not placed in service	28,392		28,392		33,316
Property and equipment, net	156,698		156,698		126,297
Depreciation and amortization expense	8,900	$ 4,700	16,282	$ 8,679
Capital leased assets, net	2,199		2,199		3,710
Depreciation and amortization expense, capital lease	800	$ 800	1,500	$ 1,600
Computer Equipment and Software [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	156,390		156,390		116,602
Accumulated depreciation and amortization, capital lease	8,033		8,033		6,522
Furniture and Fixtures [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	8,960		8,960		6,838
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	28,229		28,229		18,532
Computer Equipment [Member]
Property, Plant and Equipment [Line Items]
Capital leased assets, gross	8,715		8,715		8,715
Computer Software [Member]
Property, Plant and Equipment [Line Items]
Capital leased assets, gross	$ 1,517		$ 1,517		$ 1,517

Balance Sheet Components (Accru

Balance Sheet Components (Accrued and Other Current Liabilities) (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Accrued and Other Current Liabilities [Line Items]
Employee-related Liabilities, Current	$ 16,400	$ 31,848
Accrued Sales Commission, Current	1,036	1,832
Accrued Royalties, Current	2,264	1,395
Sales and Excise Tax Payable, Current	1,328	2,327
Other Accrued Liabilities, Current	1,873	2,407
Accrued and other current liabilities	$ 22,901	$ 39,809

Goodwill and Intangible Asset34

Goodwill and Intangible Assets (Schedule of Goodwill) (Details) - USD ($)	6 Months Ended
	Jun. 30, 2017	Dec. 31, 2016
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill	$ 74,547,000	$ 74,547,000
Goodwill, change in carrying value	$ 0

Goodwill and Intangible Asset35

Goodwill and Intangible Assets (Intangible Assets Gross and Net Balances) (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2017	Dec. 31, 2016
Other Intangible Net
Gross Carrying Amount	$ 31,636	$ 31,636
Accumulated Amortization	(20,542)	(18,386)
Finite-Lived Intangible Assets, Net	11,094	13,250
Intangible assets, gross (excluding goodwill)	35,675	35,675
Intangible assets, net	$ 15,133	$ 17,289
Finite-Lived Intangible Assets, Remaining Amortization Period	38 months 25 days	43 months 17 days
Trade Names [Member]
Other Intangible Net
Indefinite-Lived Intangible Assets (Excluding Goodwill)	$ 4,039	$ 4,039
Developed technology [Member]
Other Intangible Net
Gross Carrying Amount	11,535	11,535
Accumulated Amortization	(8,849)	(8,183)
Finite-Lived Intangible Assets, Net	$ 2,686	$ 3,352
Finite-Lived Intangible Assets, Remaining Amortization Period	27 months 8 days	32 months 21 days
Trade Names [Member]
Other Intangible Net
Gross Carrying Amount	$ 331	$ 331
Accumulated Amortization	(331)	(331)
Finite-Lived Intangible Assets, Net	$ 0	$ 0
Finite-Lived Intangible Assets, Remaining Amortization Period	1 day	1 day
Customer Relationships and Contracts [Member]
Other Intangible Net
Gross Carrying Amount	$ 19,400	$ 19,400
Accumulated Amortization	(11,206)	(9,762)
Finite-Lived Intangible Assets, Net	$ 8,194	$ 9,638
Finite-Lived Intangible Assets, Remaining Amortization Period	42 months 27 days	47 months 18 days
Order or Production Backlog [Member]
Other Intangible Net
Gross Carrying Amount	$ 370	$ 370
Accumulated Amortization	(156)	(110)
Finite-Lived Intangible Assets, Net	$ 214	$ 260
Finite-Lived Intangible Assets, Remaining Amortization Period	28 months	34 months

Goodwill and Intangible Asset36

Goodwill and Intangible Assets (Intangible Assets Future Amortization) (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Minimum future amortization expense for intangible assets
Finite-Lived Intangible Assets, Amortization Expense, Remainder of Fiscal Year	$ 2,138
Finite-Lived Intangible Assets, Amortization Expense, Next Fiscal Year	3,443
Finite-Lived Intangible Assets, Amortization Expense, in Two Years	3,166
Finite-Lived Intangible Assets, Amortization Expense, in Three Years	1,778
Finite-Lived Intangible Assets, Amortization Expense, in Four Years	314
Finite-Lived Intangible Assets, Amortization Expense, in Five Years	255
Finite-Lived Intangible Assets, Net	$ 11,094	$ 13,250

Goodwill and Intangible Asset37

Goodwill and Intangible Assets (Details Textual) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization of intangible assets	$ 1,100	$ 1,500	$ 2,156	$ 2,949

Income Taxes (Details Textual)

Income Taxes (Details Textual) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Income Tax Disclosure [Abstract]
Estimated annual effective tax rate (percent)			35.80%	37.40%
Income tax provision (benefit)	$ (836)	$ 6,258	$ (5,429)	$ 7,474
Annual effective tax rate (percent)	(4.70%)	37.20%	(23.60%)	36.30%
Favorable impact on effective tax rate due to adoption of new accounting standard (percent)	40.90%		60.10%
Federal statutory tax rate (percent)	35.00%		35.00%
Excess Tax Benefit from Share-based Compensation, Financing Activities	$ 7,300		$ 13,800
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense			$ 0	$ 0

Commitments and Contingencies (

Commitments and Contingencies (Details Textual)	Jun. 30, 2017Facilities
Commitments and Contingencies Disclosure [Abstract]
Number of facilities under operating lease arrangements	8

Equity and Stock Incentive Pl40

Equity and Stock Incentive Plans (Stock-Based Compensation Allocation) (Details Table 1) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation by financial statement line item	$ 8,510	$ 8,018	$ 16,361	$ 14,708
Cost of Sales [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation by financial statement line item	1,675	1,132	3,119	2,102
Selling and Marketing Expense [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation by financial statement line item	1,258	1,059	2,434	1,937
Research and Development Expense [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation by financial statement line item	2,098	1,944	3,959	3,448
General and Administrative Expense [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation by financial statement line item	$ 3,479	$ 3,883	$ 6,849	$ 7,221

Equity and Stock Incentive Pl41

Equity and Stock Incentive Plans (Stock Option Activity) (Details Table 2) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	6 Months Ended	12 Months Ended
	Jun. 30, 2017	Jun. 30, 2017	Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Options granted, shares	0
Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Outstanding at January 1, 2017, Shares		1,885,332
Options granted, shares		6,601
Options exercised, Shares		(249,214)
Options forfeited or expired, Shares		(14,787)
Outstanding at March 31, 2017, Shares	1,627,932	1,627,932	1,885,332
Ending vested and expected to vest, Number of Shares at End of Period	1,617,046	1,617,046
Stock option exercisable at End of Period, Shares, Ending Balance	1,315,908	1,315,908
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward]
Outstanding, beginning of period, weighted average exercise price		$ 26.21
Options granted, weighted average exercise price		94.66
Options exercised, weighted average exercise price		23.81
Options forfeited or expired, weighted average exercise price		39.74
Outstanding, end of period, weighted average exercise price	$ 26.73	26.73	$ 26.21
Ending vested and expected to vest, Weighted Average Exercise Price at End of Period	26.59	26.59
Stock option exercisable at End of Period, weighted average exercise price, Ending Balance	$ 22.78	$ 22.78
Weighted average remaining contractual term at End of Period		5 years 310 days	6 years 124 days
Ending vested and expected to vest, Weighted Average Remaining Contractual Term at End of Period		5 years 306 days
Stock option exercisable, weighted average remaining Contractual term, Ending balance		5 years 175 days
Aggregate Intrinsic value at End of Period	$ 135,413	$ 135,413	$ 108,356
Ending vested and expected to vest, Aggregate Intrinsic Value at End of Period	134,729	134,729
Exercisable aggregate Intrinsic Value	$ 114,659	$ 114,659

Equity and Stock Incentive Pl42

Equity and Stock Incentive Plans (RSU and Performance Award Activity) (Details Table 3)	6 Months Ended
	Jun. 30, 2017$ / sharesshares
RSUs [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding [Roll Forward]
Outstanding at January 1, 2017	1,025,115
Granted	430,605
Released	(275,361)
Forfeited or expired	60,945
Outstanding at March 31, 2017	1,119,414
Weighted Average Grant Date Fair Value, beginning of period | $ / shares	$ 64.47
Grants in Period, Weighted Average Grant Date Fair Value | $ / shares	103.76
Released in Period, Weighted Average Grant Date Fair Value | $ / shares	54.91
Forfeitures, Weighted Average Grant Date Fair Value | $ / shares	76.99
Weighted Average Grant Date Fair Value, end of period | $ / shares	$ 81.25
Ending vested and expected to vest, Number of Shares at End of Period	967,205
Performance Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding [Roll Forward]
Outstanding at January 1, 2017	407,650
Granted	41,201
Released	(145,651)
Forfeited or expired	0
Outstanding at March 31, 2017	303,200
Weighted Average Grant Date Fair Value, beginning of period | $ / shares	$ 46.77
Grants in Period, Weighted Average Grant Date Fair Value | $ / shares	94.66
Released in Period, Weighted Average Grant Date Fair Value | $ / shares	39.53
Forfeitures, Weighted Average Grant Date Fair Value | $ / shares	0
Weighted Average Grant Date Fair Value, end of period | $ / shares	$ 56.76
Ending vested and expected to vest, Number of Shares at End of Period	303,200

Equity and Stock Incentive Pl43

Equity and Stock Incentive Plans (Fair Value Assumptions) (Details Table 4)	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Stock Option [Member]
Schedule of Stock Options and Employee Stock Purchase Plan Valuation Assumptions
Risk-free interest rate	0.00%	0.00%	2.04%	1.38%
Expected life of options (in years)			6 years 29 days	6 years 29 days
Expected dividend yield	0.00%	0.00%	0.00%	0.00%
Volatility	0.00%	0.00%	48.00%	47.00%
Employee Stock Purchase Plan [Member]
Schedule of Stock Options and Employee Stock Purchase Plan Valuation Assumptions
Risk-free interest rate	0.00%	0.00%	0.69%	0.36%
Expected life of options (in years)			182 days	183 days
Expected dividend yield	0.00%	0.00%	0.00%	0.00%
Volatility	0.00%	0.00%	35.00%	46.00%

Equity and Stock Incentive Pl44

Equity and Stock Incentive Plans (Reserved Shares) (Details Table 5)	Jun. 30, 2017shares
Class of Stock [Line Items]
Reserved Shares	9,975,284
Options and Awards Outstanding [Member]
Class of Stock [Line Items]
Reserved Shares	3,050,546
Shares Available for Future Grant [Member]
Class of Stock [Line Items]
Reserved Shares	5,241,658
Shares Available Under Employee Stock Purchase Plan [Member]
Class of Stock [Line Items]
Reserved Shares	1,683,080

Equity and Stock Incentive Pl45

Equity and Stock Incentive Plans (Details Textual) - USD ($)	3 Months Ended	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2017	Jun. 30, 2016	Feb. 28, 2017	May 01, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options granted, shares	0
Stock repurchase program, authorized amount					$ 75,000,000
Employee Stock Purchase Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Annual Automatic Increase in Shares Reserved for Issuance, Shares				336,856
Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options granted, shares		6,601
Share Price	$ 109.91	$ 109.91
Unrecognized Compensation Cost Related to unvested Stock option	$ 6,100,000	$ 6,100,000
Expected to be recognized over a weighted average period		1 year 160 days
Annual Automatic Increase in Shares Reserved for Issuance, Shares				1,684,282
RSUs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Vested		$ 29,200,000	$ 14,600,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value		15,100,000	7,000,000
Performance Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Vested		13,700,000	9,300,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value		5,800,000	$ 3,500,000
Restricted Stock Units and Performance Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized Compensation Cost Related to unvested Stock option	77,200,000	$ 77,200,000
Expected to be recognized over a weighted average period		2 years 248 days
2009 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options granted, shares		0
Employee Stock Purchase Plan [Member] | Employee Stock Purchase Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares purchased under ESPP		52,619	47,819
Purchase price of ESPP shares		$ 4,300,000	$ 2,900,000
Unrecognized compensation cost related to employee stock purchase plan	$ 500,000	$ 500,000
Expected recognized period under employee stock purchase plan		2 months

Segment Information (Details Ta

Segment Information (Details Table) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Segment Reporting Information Revenue
Revenues	$ 104,125	$ 90,098	$ 197,127	$ 163,723
On Demand Revenues [Member]
Segment Reporting Information Revenue
Revenues	104,125	89,906	197,127	163,005
On Premise Revenues [Member]
Segment Reporting Information Revenue
Revenues	$ 0	$ 192	$ 0	$ 718