LivePerson (LPSN) 10-Q 10 May 17 2017 Q1 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2017	May 03, 2017
Document - Document And Entity Information [Abstract]
Document Fiscal Period Focus	Q1
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2017
Document Fiscal Year Focus	2,017
Trading Symbol	lpsn
Entity Registrant Name	LIVEPERSON INC
Entity Central Index Key	1,102,993
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		58,444,291

CONDENSED CONSOLIDATED BALANCE

CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
CURRENT ASSETS:
Cash and cash equivalents	$ 47,759	$ 50,889
Cash held as collateral	3,978	3,962
Accounts receivable, net of allowance for doubtful accounts of $1,887 and $1,732 as of March 31, 2017 and December 31, 2016, respectively	28,687	31,823
Prepaid expenses and other current assets	8,061	5,477
Total current assets	88,485	92,151
Property and equipment, net	29,057	28,397
Intangibles, net	15,189	16,510
Goodwill	80,278	80,245
Deferred tax assets, net	792	773
Other assets	1,562	1,562
Total assets	215,363	219,638
CURRENT LIABILITIES:
Accounts payable	6,170	7,288
Accrued expenses and other current liabilities	31,871	40,250
Deferred revenue	33,087	27,145
Total current liabilities	71,128	74,683
Other liabilities	3,044	3,147
Deferred tax liability	3,582	3,332
Total liabilities	77,754	81,162
Commitments and contingencies
STOCKHOLDERS’ EQUITY:
Common stock	58	58
Additional paid-in capital	290,935	289,524
Treasury stock	(2)	(2)
Accumulated deficit	(150,620)	(144,944)
Accumulated other comprehensive loss	(2,762)	(6,160)
Total stockholders’ equity	137,609	138,476
Total liabilities and stockholders’ equity	$ 215,363	$ 219,638

CONDENSED CONSOLIDATED BALANCE3

CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Statement of Financial Position [Abstract]
Accounts receivable, allowance for doubtful accounts	$ 1,887	$ 1,732

CONDENSED CONSOLIDATED STATEMEN

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2017	Mar. 31, 2016
Revenue		$ 50,919	$ 55,464
Costs and expenses
Cost of revenue	[1],[2],[3]	13,781	15,864
Sales and marketing	[2],[3]	21,700	22,676
General and administrative	[2],[3]	9,692	9,529
Product development	[2],[3]	9,958	9,214
Restructuring costs	[2],[3]	240	0
Amortization of purchased intangibles	[2],[3]	472	924
Total costs and expenses	[2],[3]	55,843	58,207
Loss from operations		(4,924)	(2,743)
Other income, net		320	634
Loss before provision for income taxes		(4,604)	(2,109)
Provision for income taxes		1,072	554
Net loss		$ (5,676)	$ (2,663)
Basic net loss per common share (in dollars per share)		$ (0.10)	$ (0.05)
Diluted net loss per common share (in dollars per share)		$ (0.10)	$ (0.05)
Weighted average shares outstanding used in basic net loss per common share calculation (in shares)		55,975,093	56,386,003
Weighted average shares outstanding used in diluted net loss per common share calculation (in shares)		55,975,093	56,386,003
Stock compensation expense		$ 1,913	$ 2,319
Cost of revenue [Member]
Costs and expenses
Amortization of purchased intangibles		959	697
Stock compensation expense		75	10
Depreciation expense		1,765	2,338
Sales and marketing expense [Member]
Costs and expenses
Stock compensation expense		654	630
Depreciation expense		381	279
General and administrative expense [Member]
Costs and expenses
Stock compensation expense		662	852
Depreciation expense		249	399
Product development expense [Member]
Costs and expenses
Stock compensation expense		522	827
Depreciation expense		$ 398	$ 151
[1]	Amounts include amortization expense as follows: Cost of revenue $959 thousand and $697 thousand for the three months ended March 31, 2017 and 2016, respectively.Amounts include amortization expense as follows: Cost of revenue $2,091 thousand and $2,439 thousand for the three months ended March 31, 2017 and 2016, respectively.
[2]	Amounts include depreciation expense as follows: Cost of revenue $1,765 thousand and $2,338 thousand for the three months ended March 31, 2017 and 2016, respectively, Sales and marketing $381 thousand and $279 thousand for the three months ended March 31, 2017 and 2016, respectively, General and administrative $249 thousand and $399 thousand for the three months ended March 31, 2017 and 2016, respectively, and Product development $398 thousand and $151 thousand for the three months ended March 31, 2017 and 2016, respectively. Amounts include depreciation expense as follows: Cost of revenue $6,469 thousand and $6,491 thousand for the three months ended March 31, 2017 and 2016, respectively, Sales and marketing $1,012 thousand and $819 thousand for the three months ended March 31, 2017 and 2016, respectively, General and administrative $1,215 thousand and $663 thousand for the three months ended March 31, 2017 and 2016, respectively, and Product development $749 thousand and $626 thousand for the three months ended March 31, 2017 and 2016, respectively.
[3]	Amounts include stock compensation expense as follows: Cost of revenue $75 thousand and $10 thousand for the three months ended March 31, 2017 and 2016, respectively, Sales and marketing $654 thousand and $630 thousand for the three months ended March 31, 2017 and 2016, respectively, General and administrative $662 thousand and $852 thousand for the three months ended March 31, 2017 and 2016, respectively and Product development $522 thousand and $827 thousand for the three months ended March 31, 2017 and 2016, respectively. Amounts include stock compensation expense as follows: Cost of revenue $342 thousand and $1,092 thousand for thethree months ended March 31, 2017 and 2016, respectively, Sales and marketing $1,936 thousand and $2,292 thousand for the three months ended March 31, 2017 and 2016, respectively, General and administrative $2,552 thousand and $2,590 thousand for the three months ended March 31, 2017 and 2016, respectively and Product development $2,770 thousand and $2,819 thousand for the three months ended March 31, 2017 and 2016, respectively.

CONDENSED CONSOLIDATED STATEME5

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Statement of Comprehensive Income [Abstract]
Net loss	$ (5,676)	$ (2,663)
Foreign currency translation adjustment	(3,398)	(1,232)
Comprehensive loss	$ (9,074)	$ (3,895)

CONDENSED CONSOLIDATED STATEME6

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
OPERATING ACTIVITIES:
Net loss	$ (5,676)	$ (2,663)
Adjustments to reconcile net loss to net cash (used in) provided by operating activities:
Stock-based compensation expense	1,913	2,319
Depreciation	2,793	3,167
Amortization of purchased intangibles	1,431	1,621
Amortization of tenant allowance	(42)	0
Deferred income taxes	(21)	(181)
Provision for doubtful accounts, net	451	385
Changes in operating assets and liabilities:
Accounts receivable	2,686	(205)
Prepaid expenses and other current assets	(2,548)	(2,829)
Other assets	0	(84)
Accounts payable	(1,117)	86
Accrued expenses and other current liabilities	(8,998)	(8,606)
Deferred revenue	5,942	8,031
Other liabilities	84	1,109
Net cash (used in) provided by operating activities	(3,102)	2,150
INVESTING ACTIVITIES:
Purchases of property and equipment, including capitalized software	(2,729)	(4,529)
Cash held as collateral for foreign exchange forward contracts	(17)	1,440
Payments for acquisitions and intangible assets, net of cash acquired	(98)	0
Net cash used in investing activities	(2,844)	(3,089)
FINANCING ACTIVITIES:
Proceeds from issuance of common stock in connection with the exercise of options	460	235
Repurchase of common stock	(976)	(3,204)
Net cash used in financing activities	(516)	(2,969)
EFFECT OF FOREIGN EXCHANGE RATE CHANGES ON CASH AND CASH EQUIVALENTS	3,332	(339)
CHANGE IN CASH AND CASH EQUIVALENTS	(3,130)	(4,247)
CASH AND CASH EQUIVALENTS - Beginning of the period	50,889	48,803
CASH AND CASH EQUIVALENTS - End of the period	47,759	44,556
SUPPLEMENTAL DISCLOSURE OF OTHER CASH FLOW INFORMATION:
Cash paid for income taxes	0	464
SUPPLEMENTAL DISCLOSURE OF NON-CASH INVESTING AND FINANCING ACTIVITIES:
Purchase of property and equipment recorded in accounts payable	682	287
Leasehold improvements funded by landlord	$ 0	$ 152

Description of Business and Bas

Description of Business and Basis of Presentation	3 Months Ended
	Mar. 31, 2017
Accounting Policies [Abstract]
Description of Business and Basis of Presentation	Description of Business and Basis of Presentation LivePerson, Inc. (the “Company” or “LivePerson”) was incorporated in the State of Delaware in November 1995 and the LivePerson service was introduced in November 1998. In April 2000, the Company completed an initial public offering and is currently traded on the Nasdaq Global Select Market and the Tel Aviv Stock Exchange. LivePerson is headquartered in New York City, with a U.S. office in Alpharetta (Georgia) and international offices in Amsterdam, Berlin, London, Mannheim, Melbourne, Milan, Paris, Ra'anana (Israel), Reading (UK), and Tokyo. LivePerson provides mobile and online business messaging solutions that power digital communication between brands and consumers. LiveEngage, the Company’s enterprise-class, cloud-based platform, enables businesses to create a meaningful connection with consumers via messaging. As consumers have reoriented their digital lives around the smartphone, messaging apps have become their preferred communication channel to connect with each other. LivePerson allows brands to align with this new consumer preference, and deploy messaging at scale for customer care and sales, instead of demanding that consumers use email or call a 1-800 number. LiveEngage was designed to securely deploy messaging at scale for brands with tens of millions of customers and many thousands of customer care agents. Key benefits include a sophisticated proactive targeting engine and a robust suite of text and mobile messaging, real-time chat messaging, content delivery, customer sentiment, and cobrowsing offerings that power intelligent digital engagement with consumers. LiveEngage powers conversations across each of a brand’s primary digital channels, including mobile apps, mobile and desktop web browsers, social media and third-party consumer messaging platforms. LivePerson optimizes campaign outcomes for sales and service transaction by combining website visitor data with other historical, behavioral, and operational information to develop insights into each step of a consumer’s journey. LivePerson’s products, coupled with its domain knowledge, industry expertise and consulting services, have been proven to maximize the effectiveness of consumer engagement. The Company’s primary revenue source is from the sale of LivePerson services to businesses of all sizes. The Company also offers an online marketplace that connects independent service providers (“Experts”) who provide information and knowledge for a fee via mobile and online messaging with individual consumers (“Users”). Basis of Presentation The accompanying condensed consolidated financial statements as of March 31, 2017 and for the three months ended March 31, 2017 and 2016 are unaudited. In the opinion of management, the unaudited condensed consolidated financial statements have been prepared on the same basis as the annual financial statements and reflect all adjustments, which include only normal recurring adjustments, necessary to present fairly the consolidated financial position of LivePerson as of March 31, 2017 , and the consolidated results of operations, comprehensive loss and cash flows for the interim periods ended March 31, 2017 and 2016 . The financial data and other information disclosed in these notes to the condensed consolidated financial statements related to these periods are unaudited. The results of operations for any interim period are not necessarily indicative of the results of operations for any other future interim period or for a full fiscal year. The condensed consolidated balance sheet at December 31, 2016 has been derived from audited consolidated financial statements at that date. Certain information and note disclosures normally included in financial statements prepared in accordance with generally accepted accounting principles in the United States (“GAAP”) have been condensed or omitted pursuant to the rules and regulations of the Securities and Exchange Commission (the “SEC”). These unaudited interim condensed consolidated financial statements should be read in conjunction with the Company’s audited consolidated financial statements and notes thereto for the year ended December 31, 2016 included in the Company’s Annual Report on Form 10-K filed with the SEC on March 10, 2017. Principles of Consolidation The condensed consolidated financial statements include the Company and its wholly-owned subsidiaries. All intercompany balances and transactions have been eliminated. Reclassification For comparability, certain 2016 amounts have been reclassified, where appropriate, to conform to the financial presentation in 2017 . Use of Estimates The preparation of the Company’s condensed consolidated financial statements in conformity with 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 condensed consolidated financial statements and the reported amounts of income and expenses during the reporting period. These estimates are based on information available as of the date of the condensed consolidated financial statements; therefore, actual results could differ from management’s estimates. Recently Issued Accounting Standards In January 2017, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update No. 2017-04, "Intangibles —Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment" (“ASU 2017-04”). This update addresses concerns over the cost and complexity of the two-step goodwill impairment test. The amendments in this update remove the second step of the test. An entity will apply a one-step quantitative test and record the amount of goodwill impairment as the excess of a reporting unit's carrying amount over its fair value, not to exceed the total amount of goodwill allocated to the reporting unit. The new guidance does not amend the optional qualitative assessment of goodwill impairment. ASU 2017-04 is effective for financial statements issued for annual periods beginning after December 15, 2019, and interim periods within those annual periods. The Company does not expect the adoption of ASU 2017-04 to have a material effect on its financial position, results of operations or cash flows. In January 2017, the FASB issued Accounting Standards Update No. 2017-01, "Business Combinations (Topic 805): Clarifying the Definition of a Business" (“ASU 2017-01”). This update clarifies the definition of a business with the objective of adding guidance to assist entities with evaluating whether transactions should be accounted for as acquisitions (or disposals) of businesses. The amendments in this update provide a screen to determine when a set is not a business. If the screen is not met, it (1) requires that to be considered a business, a set must include, at a minimum, an input and a substantive process that together significantly contribute to the ability to create output and (2) removes the evaluation of whether a market participant could replace the missing elements. ASU 2017-01 is effective for financial statements issued for annual periods beginning after December 15, 2017, and interim periods within those annual periods. The Company does not expect the adoption of ASU 2017-01 to have a material effect on its financial position, results of operations or cash flows. In March 2016, the FASB issued Accounting Standards Update No. 2016-09, “Compensation -Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting” (“ASU 2016-09”). This update is intended to improve the accounting for employee share-based payments and affects all organizations that issue share-based payment awards to their employees. Several aspects of the accounting for share-based payment award transactions are simplified, including:(a) income tax consequences; (b) classification of awards as either equity or liabilities; and (c) classification on the statement of cash flows. The Company adopted this ASU as of the beginning of the first quarter of 2017 and has elected to continue to estimate expected forfeitures over the course of a vesting period. Further, the ASU eliminates the requirement to delay the recognition of excess tax benefits until they reduce current taxes payable. The adoption of ASU 2016-09 did not have any material impact on the Company’s financial statements. In February 2016, the FASB issued Accounting Standards Update No. 2016-02, “Leases” (“ASU 2016-02”). ASU 2016-02 requires lessees to recognize the following for all leases (with the exception of short-term leases) at the commencement date: a lease liability, which is a lessee‘s obligation to make lease payments arising from a lease, measured on a discounted basis; and a right-of-use asset, which is an asset that represents the lessee’s right to use, or control the use of, a specified asset for the lease term. Under the new guidance, lessor accounting is largely unchanged. Certain targeted improvements were made to align, where necessary, lessor accounting with the lessee accounting model and Topic 606, “Revenue from Contracts with Customers”. The new lease guidance also simplified the accounting for sale and leaseback transactions primarily because lessees must recognize lease assets and lease liabilities. Lessees will no longer be provided with a source of off-balance sheet financing. Lessees (for capital and operating leases) and lessors (for sales-type, direct financing, and operating leases) must apply a modified retrospective transition approach for leases existing at, or entered into after, the beginning of the earliest comparative period presented in the financial statements. The modified retrospective approach would not require any transition accounting for leases that expired before the earliest comparative period presented. Lessees and lessors may not apply a full retrospective transition approach. ASU 2016-02 is effective for financial statements issued for annual periods beginning after December 15, 2018. While the Company is currently assessing the impact ASU 2016-02 will have on the consolidated financial statements, the Company expects the primary impact to its consolidated financial position upon adoption will be the recognition, on a discounted basis, of its minimum commitments under non-cancelable operating leases on the consolidated balance sheets resulting in the recording of right of use assets and lease obligations. The Company is also currently evaluating the timing of adoption and the impact that the standard will have on its condensed consolidated financial statements and related disclosures. The Company's current minimum commitments under noncancelable operating leases are disclosed in Note 9. In May 2014, the FASB issued Accounting Standards Update No. 2014-09, “Revenue from Contracts with Customers” (“ASU 2014-09”), which supersedes most existing revenue recognition guidance under GAAP. The core principle of ASU 2014-09 is to recognize revenues when promised goods or services are transferred to customers in an amount that reflects the consideration to which an entity expects to be entitled for those goods or services. ASU 2014-09 defines a five step process to achieve this core principle and, in doing so, more judgment and estimates may be required within the revenue recognition process than are required under existing GAAP. The standard is effective for annual periods beginning after December 15, 2017, and interim periods therein, using either of the following transition methods: (i) a full retrospective approach reflecting the application of the standard in each prior reporting period with the option to elect certain practical expedients, or (ii) a retrospective approach with the cumulative effect of initially adopting ASU 2014-09 recognized at the date of adoption (which includes additional footnote disclosures). In March 2016, the FASB issued implementation guidance that clarified the considerations in principal versus agent determination. In April 2016, FASB issued guidance that clarified identifying performance obligations and licensing implementation guidance contained in the new revenue recognition standard. In May 2016, FASB issued guidance that addresses narrow-scope improvements to the guidance on collectability, noncash consideration, and completed contracts at transition. In December 2016, FASB issued guidance to make minor corrections or minor improvements to the Codification that are not expected to have a significant effect on current accounting practice or create a significant administrative cost to most entities. The Company's current revenue policy meets five core principles of ASU 2014-09 and the Company currently capitalizes the contract costs over the contracted period also in accordance with ASU 2014-09. The Company is still analyzing the impact of this ASU, but based on the current work to date the Company believes that the current revenue recognition policy currently in place already depicts the transfer of promised goods or services to customers in an amount that reflects the consideration to which the Company expects to be entitled in exchange for those goods or services and as a result the adoption of this ASU is not expected to have a material impact on the Company's financial statements.

Revenue Recognition

Revenue Recognition	3 Months Ended
	Mar. 31, 2017
Revenue Recognition [Abstract]
Revenue Recognition	Revenue Recognition The majority of the Company’s revenue is generated from monthly service revenues and related professional services from the sale of the LivePerson services. Because the Company provides its application as a service, the Company follows the provisions of FASB Accounting Standards Codification (“ASC”) 605-10-S99, “Revenue Recognition” and ASC 605-25, “Revenue Recognition with Multiple-Element Arrangements.” The Company charges a monthly, quarterly or annual fee, which varies by type of service, the level of customer usage and website traffic, and in some cases, the number of orders placed via the Company’s online engagement solutions. For certain of the Company’s larger customers, the Company may provide call center labor through an arrangement with one or more of several qualified vendors. For most of these customers, the Company passes the fee it incurs with the labor provider and its fee for the hosted services through to its customers in the form of a fixed fee for each order placed via the Company’s online engagement solutions. For these Pay for Performance (“PFP”) arrangements, in accordance with ASC 605-45, “Principal Agent Considerations,” the Company records revenue for transactions in which it acts as an agent on a net basis, and revenue for transactions in which it acts as a principal on a gross basis. The Company also sells certain of the LivePerson services directly via Internet download. These services are marketed as LiveEngage for small to medium-sized businesses, and are paid for almost exclusively by credit card. Credit card payments accelerate cash flow and reduce the Company’s collection risk, subject to the merchant bank’s right to hold back cash pending settlement of the transactions. Sales of LiveEngage may occur with or without the assistance of an online sales representative, rather than through face-to-face or telephone contact that is typically required for traditional direct sales. The Company recognizes monthly service revenue based upon the fee charged for the LivePerson services, provided that there is persuasive evidence of an arrangement, no significant Company obligations remain, collection of the resulting receivable is probable and the amount of fees to be paid is fixed or determinable. The Company’s service agreements typically have twelve month terms and, in some cases, are terminable or may terminate upon 30 to 90 days’ notice without penalty. When professional service fees add value to the customer on a standalone basis, the Company recognizes professional service fees upon completion and customer acceptance. The Company establishes a selling price hierarchy for determining the selling price of a deliverable, which is based on: (a) vendor-specific objective evidence; (b) third-party evidence; or (c) best estimated selling price. If a professional services arrangement does not qualify for separate accounting, the Company recognizes the fees, and the related labor costs, ratably over the contracted period. For revenue from the Company’s Consumer segment generated from online transactions between Experts and Users, the Company recognizes revenue net of the Expert fees in accordance with ASC 605-45, “Principal Agent Considerations,” due primarily to the fact that the Expert is the primary obligor. Additionally, the Company performs as an agent without any risk of loss for collection, and is not involved in selecting the Expert or establishing the Expert’s fee. The Company collects a fee from the User and retains a portion of the fee, and then remits the balance to the Expert. Revenue from these transactions is recognized when there is persuasive evidence of an arrangement, no significant Company obligations remain, collection of the resulting receivable is probable and the amount of fees to be paid is fixed and determinable.

Net Loss Per Share

Net Loss Per Share	3 Months Ended
	Mar. 31, 2017
Earnings Per Share [Abstract]
Net Loss Per Share	Net Loss Per Share The Company calculates earnings per share (“EPS”) in accordance with the provisions of ASC 260-10 and the guidance of SEC Staff Accounting Bulletin (“SAB”) No. 98. Under ASC 260-10, basic EPS excludes dilution for common stock equivalents and is computed by dividing net income or loss attributable to common shareholders by the weighted average number of common shares outstanding for the period. All options, warrants or other potentially dilutive instruments issued for nominal consideration are required to be included in the calculation of basic and diluted net income attributable to common stockholders. Diluted EPS is calculated using the treasury stock method and reflects the potential dilution that could occur if securities or other contracts to issue common stock were exercised or converted into common stock and resulted in the issuance of common stock. Diluted net loss per common share for the three months ended March 31, 2017 does not include the effect of 8,566,220 outstanding common stock awards, as the effect of their inclusion is anti-dilutive. Diluted net loss per common share for the three months ended March 31, 2016 does not include the effect of 9,748,493 outstanding common stock awards, as the effect of their inclusion is anti-dilutive. A reconciliation of shares used in calculating basic and diluted net loss per share follows: Three Months Ended March 31, 2017 2016 Basic 55,975,093 56,386,003 Effect of assumed exercised options — — Diluted 55,975,093 56,386,003

Segment Information

Segment Information	3 Months Ended
	Mar. 31, 2017
Segment Reporting [Abstract]
Segment Information	Segment Information The Company accounts for its segment information in accordance with the provisions of ASC 280-10, “Segment Reporting.” ASC 280-10 establishes annual and interim reporting standards for operating segments of a company. ASC 280-10 requires disclosures of selected segment-related financial information about products, major customers, and geographic areas based on the Company’s internal accounting methods. The Company is organized into two operating segments for purposes of making operating decisions and assessing performance. The Business segment facilitates real-time online interactions – chat, voice and content delivery across multiple channels and screens for global corporations of all sizes. The Consumer segment facilitates online transactions between Experts and Users and sells its services to consumers. Both segments currently generate their revenue primarily in the United States. The chief operating decision maker, who is the chief executive officer, evaluates performance, makes operating decisions, and allocates resources based on the operating income of each segment. The reporting segments follow the same accounting polices used in the preparation of the Company’s condensed consolidated financial statements which are described in the summary of significant accounting policies. The Company allocates cost of revenue, sales and marketing and amortization of purchased intangibles to the segments, but it does not allocate product development expenses, general and administrative expenses, restructuring costs and income tax expense because management does not use this information to measure performance of the operating segments. There are currently no inter-segment sales. Summarized financial information by segment for the three months ended March 31, 2017 , based on the Company’s internal financial reporting system utilized by the Company’s chief operating decision maker, follows (amounts in thousands): Business Consumer Corporate Consolidated Revenue: Hosted services – Business $ 41,493 $ — $ — $ 41,493 Hosted services – Consumer — 4,170 — 4,170 Professional services 5,256 — — 5,256 Total revenue 46,749 4,170 — 50,919 Cost of revenue 12,906 875 — 13,781 Sales and marketing 19,543 2,157 — 21,700 Amortization of purchased intangibles 472 — — 472 Unallocated corporate expenses — — 19,890 19,890 Operating income (loss) $ 13,828 $ 1,138 $ (19,890 ) $ (4,924 ) Summarized financial information by segment for the three months ended March 31, 2016 , based on the Company’s internal financial reporting system utilized by the Company’s chief operating decision maker, follows (amounts in thousands): Business Consumer Corporate Consolidated Revenue: Hosted services – Business $ 45,959 $ — $ — $ 45,959 Hosted services – Consumer — 3,766 — 3,766 Professional services 5,739 — — 5,739 Total revenue 51,698 3,766 — 55,464 Cost of revenue 15,238 626 — 15,864 Sales and marketing 21,013 1,663 — 22,676 Amortization of purchased intangibles 924 — — 924 Unallocated corporate expenses — — 18,743 18,743 Operating income (loss) $ 14,523 $ 1,477 $ (18,743 ) $ (2,743 ) Geographic Information The Company is domiciled in the United States and has international operations in the United Kingdom, Asia-Pacific, Latin America and Western Europe, particularly France and Germany. The following table presents the Company’s revenues attributable to domestic and foreign operations for the periods presented (amounts in thousands): Three Months Ended March 31, 2017 2016 United States $ 31,684 $ 37,790 Other Americas (1) 1,972 1,546 Total Americas 33,656 39,336 EMEA (2) (4) 13,513 11,606 APAC (3) 3,750 4,522 Total revenue $ 50,919 $ 55,464 (1) Canada, Latin America and South America (2) Europe, the Middle East and Africa (“EMEA”) (3) Asia-Pacific (“APAC”) (4) Includes revenues from the United Kingdom of $9.0 million and $8.0 million for the three months ended March 31, 2017 and 2016 , respectively. The following table presents the Company’s long-lived assets by geographic region for the periods presented (amounts in thousands): March 31, December 31, 2017 2016 United States $ 93,973 $ 93,845 Israel 13,397 13,940 Australia 9,308 9,496 Netherlands 7,372 7,495 Other (1) 2,828 2,711 Total long-lived assets $ 126,878 $ 127,487 (1) United Kingdom, Germany, Japan, France and Italy No individual customer accounted for 10% or more of consolidated revenue for any of the periods presented. No individual customer accounted for 10% or more of accounts receivable as of March 31, 2017 and December 31, 2016

Goodwill and Intangible Assets

Goodwill and Intangible Assets	3 Months Ended
	Mar. 31, 2017
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets	Goodwill and Intangible Assets Goodwill The changes in the carrying amount of goodwill for the three months ended March 31, 2017 are as follows (amounts in thousands): Business Consumer Consolidated Balance as of December 31, 2016 $ 72,221 $ 8,024 $ 80,245 Adjustments to goodwill: Foreign exchange adjustment 33 — 33 Balance as of March 31, 2017 $ 72,254 $ 8,024 $ 80,278 Intangible Assets Intangible assets are summarized as follows (see Note 8) (amounts in thousands): As of March 31, 2017 Gross Carrying Amount Accumulated Amortization Net Carrying Amount Weighted Average Amortization Period Amortizing intangible assets: Technology $ 28,192 $ (20,695 ) $ 7,497 5.3 years Customer relationships 15,843 (9,226 ) 6,617 8.0 years Trade names 1,297 (1,283 ) 14 2.1 years Non-compete agreements 1,449 (1,291 ) 158 2.3 years Patents 1,277 (402 ) 875 12.6 years Other 262 (235 ) 27 2.7 years Total $ 48,320 $ (33,132 ) $ 15,189 As of December 31, 2016 Gross Carrying Amount Accumulated Amortization Net Carrying Amount Weighted Average Amortization Period Amortizing intangible assets: Technology $ 28,018 $ (19,736 ) $ 8,282 5.3 years Customer relationships 16,009 (8,857 ) 7,152 8.0 years Trade names 1,295 (1,277 ) 18 2.1 years Non-compete agreements 1,446 (1,220 ) 226 2.3 years Patents 1,180 (376 ) 804 12.4 years Other 263 (235 ) 28 2.7 years Total $ 48,211 $ (31,701 ) $ 16,510 Amortization expense is calculated over the estimated useful life of the asset. Aggregate amortization expense for intangible assets was $1.4 million and $1.6 million for the three months ended March 31, 2017 and 2016 , respectively. For the three months ended March 31, 2017 and 2016 , respectively, a portion of this amortization is included in cost of revenue. Estimated amortization expense for the next five years is as follows (amounts in thousands): Estimated Amortization Expense 2017 $ 3,241 2018 2,565 2019 2,357 2020 2,162 2021 1,953 Thereafter 2,911 Total $ 15,189

Property and Equipment

Property and Equipment	3 Months Ended
	Mar. 31, 2017
Property, Plant and Equipment [Abstract]
Property and Equipment	Property and Equipment The following table presents the detail of property and equipment for the periods presented (amounts in thousands): March 31, December 31, Computer equipment and software $ 85,835 $ 82,477 Furniture, equipment and building improvements 15,122 15,027 100,957 97,504 Less: accumulated depreciation (71,900 ) (69,107 ) Total $ 29,057 $ 28,397 In accordance with its policy, the Company reviews the estimated useful lives of its fixed assets on an ongoing basis. This review indicated that the actual lives of certain co-location assets were longer than the estimated useful lives used for depreciation purposes in the Company’s financial statements.

Accrued Expenses and Other Curr

Accrued Expenses and Other Current Liabilities	3 Months Ended
	Mar. 31, 2017
Payables and Accruals [Abstract]
Accrued Expenses and Other Current Liabilities	Accrued Expenses and Other Current Liabilities The following table presents the detail of accrued expenses and other current liabilities for the periods presented (amounts in thousands): March 31, December 31, Payroll and other employee related costs $ 11,354 $ 15,468 Professional services and consulting and other vendor fees 12,624 15,277 Unrecognized tax benefits 4,454 4,240 Sales commissions 1,787 3,312 Contingent earnout (see Notes 8) — 210 Other 1,652 1,743 Total $ 31,871 $ 40,250

Fair Value Measurements

Fair Value Measurements	3 Months Ended
	Mar. 31, 2017
Fair Value Disclosures [Abstract]
Fair Value Measurements	Fair Value Measurements The Company measures its cash equivalents at fair value based on an expected exit price as defined by the authoritative guidance on fair value measurements, which represents the amount that would be received on the sale of an asset or paid to transfer a liability, as the case may be, in an orderly transaction between market participants. As such, fair value may be based on assumptions that market participants would use in pricing an asset or liability. The authoritative guidance on fair value measurements establishes a consistent framework for measuring fair value on either a recurring or nonrecurring basis whereby inputs, used in valuation techniques, are assigned a hierarchical level. The following are the hierarchical levels of inputs to measure fair value: • Level 1: Observable inputs that reflect quoted prices (unadjusted) for identical assets or liabilities in active markets. • Level 2: Inputs reflect: quoted prices for identical assets or liabilities in markets that are not active; quoted prices for similar assets or liabilities in active markets; inputs other than quoted prices that are observable for the assets or liabilities; or inputs that are derived principally from or corroborated by observable market data by correlation or other means. • Level 3: Unobservable inputs reflecting the Company’s assumptions incorporated in valuation techniques used to determine fair value. These assumptions are required to be consistent with market participant assumptions that are reasonably available. Financial Assets and Liabilities The carrying amount of cash, accounts receivable, and accounts payable approximate their fair value due to their short-term nature. The Company ’ s assets and liabilities that are measured at fair value on a recurring basis, by level, within the fair value hierarchy as of March 31, 2017 and December 31, 2016 , are summarized as follows (amounts in thousands). The Company’s restricted cash balance of $4.0 million at March 31, 2017 and December 31, 2016 , respectively, is not held in a money market account and is not included in the following table. March 31, 2017 December 31, 2016 Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Assets: Cash equivalents: Money market funds $ 3,350 $ — $ — $ 3,350 $ 3,076 $ — $ — $ 3,076 Foreign currency derivative contracts — 1,750 — 1,750 — 108 — 108 Total assets $ 3,350 $ 1,750 $ — $ 5,100 $ 3,076 $ 108 $ — $ 3,184 Liabilities: Contingent earn-outs $ — $ — $ — $ — $ — $ — $ 210 $ 210 Foreign currency derivative contracts — 4 — 4 — 66 — 66 Total liabilities $ — $ 4 $ — $ 4 $ — $ 66 $ 210 $ 276 In determining fair value, the Company utilizes valuation techniques that maximize the use of observable inputs and minimize the use of unobservable inputs to the extent possible as well as considers counterparty credit risk in its assessment of fair value. Observable or market inputs reflect market data obtained from independent sources, while unobservable inputs reflect the Company’s assumptions based on the best information available. The Company's money market funds are measured at fair value on a recurring basis based on quoted market prices in active markets and are classified as level 1 within the fair value hierarchy. The Company's contingent earn-out liability and foreign currency derivative contracts are measured at fair value on a recurring basis and are classified as level 3 and level 2, respectively, within the fair value hierarchy. On a nonrecurring basis, the Company uses fair value measures when analyzing asset impairment. Long-lived tangible assets are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. If it is determined such indicators are present and the review indicates that the assets will not be fully recoverable, based on undiscounted estimated cash flows over the remaining amortization periods, their carrying values are reduced to estimated fair value. The Company uses an income approach and inputs that constitute level 3. During the third quarter of each year, the Company evaluates goodwill for impairment at the reporting unit level. The Company uses qualitative factors in accordance with ASU No. 2011-08 to determine whether it is “more likely than not” that the fair value of a reporting unit is less than its carrying amount as a basis for determining whether it is necessary to perform the two-step goodwill impairment test. This measurement is classified based on level 3 input. There is no remaining contingent earn-out as of March 31, 2017 . The contingent earn-out related to the acquisition of Synchronite was based on the fulfillment of a complete product integration and a minimum number of “Co-Browse” interactions per month. The changes in fair value of the level 3 liabilities are as follows (amounts in thousands): Contingent Earn-Out March 31, 2017 December 31, 2016 Balance, Beginning of Period $ 210 $ 377 Cash payments (210 ) (167 ) Balance, End of Period $ — $ 210 Derivative Financial Instruments The Company is exposed to foreign exchange risks that in part are managed by using derivative financial instruments. The Company entered into foreign currency forward contracts related to risks associated with foreign operations. The Company does not use derivatives for trading purposes. Derivatives are recorded at their estimated fair values based upon Level 2 inputs. Derivatives designated and effective as cash flow hedges are reported as a component of other comprehensive income and reclassified to earnings in the same periods in which the hedged transactions impact earnings. Gains and losses related to derivatives not meeting the requirements of hedge accounting and the portion of derivatives related to hedge ineffectiveness are recognized in current earnings. In accordance with the foreign currency forward contracts, the Company was required to pledge cash as collateral security to be maintained at the bank. The collateral shall remain in control of the lender, and these funds can be used to satisfy the outstanding obligation. Accordingly, the Company had cash at the bank of approximately $4.0 million at March 31, 2017 and December 31, 2016 , respectively, which is recorded as cash held as collateral in current assets. The following summarizes certain information regarding the Company’s outstanding foreign currency derivative contracts related primarily to intercompany receivables and payables for the periods presented (in thousands): As of March 31, 2017 As of December 31, 2016 Notional amount of foreign currency derivative contracts $ 31,959 $ 44,438 Fair value of foreign currency derivatives contracts $ 1,746 $ 42 The fair value of the Company’s derivative instruments is summarized below (in thousands): Fair Value of Derivative Instruments Balance Sheet Location As of March 31, 2017 As of December 31, 2016 Derivative Assets Derivatives not designated as hedging instruments: Foreign currency derivatives contracts Prepaid expenses and other current assets $ 1,750 $ 108 Derivative Liabilities Derivatives not designated as hedging instruments: Foreign currency derivatives contracts Accrued expenses and other liabilities $ 4 $ 66 The following summarizes certain information regarding the Company’s derivatives that are not designated or are not effective as hedges (in thousands): Gain (losses) on Derivative Instruments Recognized in Statements of Operations Three Months Ended March 31, Location 2017 2016 Foreign currency derivatives contracts Other expense $ 175 $ 481

Commitments and Contingencies

Commitments and Contingencies	3 Months Ended
	Mar. 31, 2017
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Contractual Obligations The Company leases facilities and certain equipment under agreements accounted for as operating leases. These leases generally require the Company to pay all executory costs such as maintenance and insurance. Rental expense for operating leases for the three months ended March 31, 2017 was approximately $2.3 million . Rental expense for operating leases for the three months ended March 31, 2016 was approximately $2.7 million . Employee Benefit Plans The Company has a 401(k) defined contribution plan covering all eligible employees. The Company provides for employer matching contributions equal to 50% of employee contributions, up to the lesser of 5% of eligible compensation or $6,000 . Matching contributions are deposited into the employee’s 401(k) account and are subject to 5 year graded vesting. Salaries and related expenses include $0.4 million of employer matching contributions for the three months ended March 31, 2017 and 2016. Letters of Credit As of March 31, 2017 , the Company has a $1.9 million letter of credit outstanding substantially in favor of a certain landlord for office space. In addition, the Company has a letter of credit totaling $0.1 million as a security deposit for the due performance by the Company of the terms and conditions of a supply contract. There were no draws against these letters of credit during the three months ended March 31, 2017 .

Stockholders' Equity

Stockholders' Equity	3 Months Ended
	Mar. 31, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stockholders' Equity	Stockholders ’ Equity Common Stock As of March 31, 2017 , there were 100,000,000 shares of common stock authorized, and 58,420,922 shares issued and outstanding. As of December 31, 2016 , there were 100,000,000 shares of common stock authorized, and 58,276,447 shares issued and outstanding. The par value for common shares is $0.001 . Preferred Stock As of March 31, 2017 and December 31, 2016 , there were 5,000,000 shares of preferred stock authorized, and zero shares issued and outstanding. The par value for preferred shares is $0.001 . Stock Repurchase Program On December 10, 2012, the Company’s Board of Directors approved a stock repurchase program through June 30, 2014. Under the stock repurchase program, the Company is authorized to repurchase shares of its common stock, in the open market or privately negotiated transactions, at times and prices considered appropriate by the Board of Directors depending upon prevailing market conditions and other corporate considerations. On March 13, 2014, the Company’s Board of Directors increased the aggregate purchase price of the stock repurchase program from $30.0 million to $40.0 million . On July 23, 2014, the Company’s Board of Directors increased the aggregate purchase price of the stock repurchase program from $40.0 million to $50.0 million . On February 16, 2016, the Company's Board of Directors increased the aggregate purchase price of the total stock repurchase program by an additional $14.0 million . On November 21, 2016, the Company's Board of Directors increased the aggregate purchase price of the stock repurchase program from $64.0 million to $74.0 million and extended the expiration date of the program out to December 31, 2017. There were 142,000 shares repurchased under this program during the three months ended March 31, 2017 , which were recorded in treasury stock at par on the condensed consolidated balance sheets as of March 31, 2017 . As of March 31, 2017 , approximately $19.2 million remained available for purchase under the program. Stock-Based Compensation The Company follows FASB ASC 718-10, “Stock Compensation,” which addresses the accounting for transactions in which an entity exchanges its equity instruments for goods or services, with a primary focus on transactions in which an entity obtains employee services in share-based payment transactions. ASC 718-10 requires measurement of the cost of employee services received in exchange for an award of equity instruments based on the grant-date fair value of the award (with limited exceptions). Incremental compensation costs arising from subsequent modifications of awards after the grant date must be recognized. The per share weighted average fair value of stock options granted during the three months ended March 31, 2017 and 2016 was $2.92 and $2.34 , respectively. The fair value of each option grant is estimated on the date of grant using the Black-Scholes option-pricing model with the following weighted average assumptions: Three Months Ended March 31, 2017 2016 Dividend yield 0.0% 0.0% Risk-free interest rate 1.9% 1.3% Expected life (in years) 5 5 Historical volatility 47.0% 47.3% A description of the methods used in the significant assumptions used to estimate the fair value of stock-based compensation awards follows: Dividend yield – The Company uses 0% as it has never issued dividends and does not anticipate issuing dividends in the near term. Risk-free interest rate – The Company uses the market yield on U.S. Treasury securities at five years with constant maturity, representing the current expected life of stock options in years. Expected life – The Company uses historical data to estimate the expected life of a stock option. Historical volatility – The Company uses a trailing five year from grant date to determine volatility. Stock Option Plans During 1998, the Company established the Stock Option and Restricted Stock Purchase Plan (the “1998 Plan”). Under the 1998 Plan, the Board of Directors could issue incentive stock options or nonqualified stock options to purchase up to 5,850,000 shares of common stock. The 2000 Stock Incentive Plan (the “2000 Plan”) succeeded the 1998 Plan. Under the 2000 Plan, the options which had been outstanding under the 1998 Plan were incorporated in the 2000 Plan increasing the number of shares available for issuance under the plan by approximately 4,150,000 , thereby reserving for issuance 10,000,000 shares of common stock in the aggregate. The Company established the 2009 Stock Incentive Plan (as amended and restated, the “2009 Plan”) as a successor to the 2000 Plan. Under the 2009 Plan, the options which had been outstanding under the 2000 Plan were incorporated into the 2009 Plan and the Company increased the number of shares available for issuance under the plan by 6,000,000 . The Company amended the 2009 stock incentive plan (the “Amended 2009 Plan”) effective June 7, 2012. The Amended 2009 Plan increased the number of shares authorized for issuance under the plan by an additional 4,250,000 . The Company's Board of Directors amended and restated the 2009 stock incentive plan, subject to stockholder approval, effective April 30, 2017. The amended and restated plan will, if approved by the Company's stockholders, increase the number of shares authorized for issuance under the plan by an additional 4,000,000 , thereby reserving for issuance 27,817,744 shares of common stock in the aggregate. Options to acquire common stock granted thereunder have 10 -year terms. As of March 31, 2017 , approximately 6.8 million shares of common stock were reserved for issuance under the 2009 Plan (taking into account all option exercises through March 31, 2017 ). Employee Stock Purchase Plan In June 2010, the Company’s stockholders approved the 2010 Employee Stock Purchase Plan with 1,000,000 shares of common stock initially reserved for issuance. The Company's Board of Directors amended and restated the 2010 Employee Stock Purchase Plan, subject to stockholder approval, effective April 30, 2017. The amended and restated plan will, if approved by the Company's stockholders, increase the number of shares authorized for issuance under the plan by an additional 1,000,000 , thereby reserving for issuance 2,000,000 shares of common stock in the aggregate. As of March 31, 2017 , approximately 1.2 million shares of common stock were reserved for issuance under the Employee Stock Purchase Plan (taking into account all share purchases through March 31, 2017 ). Stock Option Activity A summary of the Company’s stock option activity and weighted average exercise prices follows: Stock Option Activity Weighted Average Remaining Contractual Term (in years) Aggregate Intrinsic Value (in thousands) Options (in thousands) Weighted Average Exercise Price Balance outstanding at December 31, 2016 7,769 $ 10.88 Granted 108 6.80 Exercised (45 ) 3.63 Cancelled or expired (307 ) 10.92 Balance outstanding at March 31, 2017 7,525 $ 10.86 5.84 $ 1,717 Options vested and expected to vest 7,144 $ 11.00 5.68 $ 1,682 Options exercisable at March 31, 2017 5,522 $ 11.38 5.08 $ 1,630 The total fair value of stock options exercised during the three months ended March 31, 2017 was approximately $0.1 million . On January 1, 2017, the Company adopted ASU 2016-09, Compensation—Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting (“ASU 2016-09”) and elected to account for forfeitures in compensation cost when they occur. As of March 31, 2017 , there was approximately $5.9 million of total unrecognized compensation cost related to nonvested share-based compensation arrangements. That cost is expected to be recognized over a weighted average period of approximately 1.8 years. The following table summarizes information about outstanding and vested stock options as of March 31, 2017 : Options Outstanding Options Exercisable Range of Exercise Prices Number of Shares Outstanding (in thousands) Weighted-Average Remaining Contractual Life (Years) Weighted-Average Exercise Price Number of Shares (in thousands) Weighted-Average Exercise Price $1.79 - $6.80 754 4.24 $ 4.57 502 $ 3.60 $6.97 - $8.48 856 6.69 7.40 378 7.06 $8.50 - $9.34 896 5.87 9.20 729 9.19 $9.44 - $10.05 648 7.20 9.91 428 9.88 $10.13 - $10.13 937 6.98 10.13 475 10.13 $10.31 - $12.32 805 5.60 11.21 640 11.39 $12.46 - $13.28 1,104 4.87 13.11 1,023 13.12 $13.34 - $16.98 1,153 6.05 15.27 975 15.59 $17.88 - $18.09 367 4.60 18.06 367 18.06 $18.24 - $18.24 5 5.33 18.24 5 18.24 7,525 5.84 $ 10.86 5,522 $ 11.38 Restricted Stock Unit Activity A summary of the Company’s restricted stock units (“RSUs”) activity and weighted average exercise prices follows: Restricted Stock Unit Activity Number of Shares (in thousands) Weighted Average Grant Date Fair Value (Per Share) Aggregate Fair Value (in thousands) Balance outstanding at December 31, 2016 1,188 $ 8.44 $ — Awarded — — — Released (62 ) 10.31 — Forfeited (85 ) 6.78 — Non-vested and outstanding at March 31, 2017 1,041 $ 8.43 $ 7,133 Expected to vest 812 $ 8.75 $ 5,564 RSUs granted to employees generally vest over a four -year period. In accordance with ASU 2017-09, as of March 31, 2017 , total unrecognized compensation cost, adjusted for estimated forfeitures, related to nonvested RSUs was approximately $8.3 million and the weighted-average remaining vesting period was 2.7 years.

Restructuring

Restructuring	3 Months Ended
	Mar. 31, 2017
Restructuring and Related Activities [Abstract]
Restructuring	Restructuring The Company's restructuring costs relate to severance costs associated with re-prioritizing and reallocating resources to focus on areas showing high growth potential. The expense associated with this restructuring was approximately $0.2 million during the three months ended March 31, 2017 . The restructuring liability was approximately $1.0 million as of March 31, 2017 and is classified as accrued expenses and other current liabilities on the condensed consolidated balance sheets. The following table present the detail of the liability for the Company's restructuring charges for the periods presented (amounts in thousands): March 31, 2017 December 31, 2016 Balance, Beginning of the year $ 2,551 $ 1,328 Severance and other associated costs 110 1,585 Cash payments (1,001 ) (1,328 ) Wind down cost legacy platform 130 966 Balance, End of year $ 1,790 $ 2,551 The following table present the detail of expenses for the Company's restructuring charges for the periods presented (amounts in thousands): March 31, 2017 March 31, 2016 Severance and other associated costs $ 110 $ — Wind down cost legacy platform 130 — Total restructuring costs $ 240 $ —

Legal Matters

Legal Matters	3 Months Ended
	Mar. 31, 2017
Commitments and Contingencies Disclosure [Abstract]
Legal Matters	Legal Matters The Company previously filed an intellectual property suit against [24]7 Customer, Inc. in the Southern District of New York on March 6, 2014 seeking damages on the grounds that [24]7 reverse engineered and misappropriated the Company's technology to develop competing products and misused the Company's business information. On June 22, 2015, [24]7 Customer, Inc. filed suit against the Company in the Northern District of California alleging patent infringement. On December 7, 2015, [24]7 Customer Inc. filed a second patent infringement suit against the Company, also in the Northern District of California. On January 5, 2016, the two California cases were consolidated for all pre-trial purposes. On March 9, 2017, the Court for the Southern District of New York in the Company's case against [24]7 granted the parties’ joint request to voluntarily transfer the Southern District of New York case to the Northern District of California for consolidation with the referenced California cases. Discovery in all three matters is in progress. The Company believes the claims filed by [24]7 Customer Inc. are entirely without merit and intends to defend them vigorously. The Company routinely assesses all of its litigation and threatened litigation as to the probability of ultimately incurring a liability, and records its best estimate of the ultimate loss in situations where the Company assesses the likelihood of loss as probable. From time to time, the Company is involved in or subject to legal, administrative and regulatory proceedings, claims, demands and investigations arising in the ordinary course of business, including direct claims brought by or against the Company with respect to intellectual property, contracts, employment and other matters, as well as claims brought against the Company’s customers for whom the Company has a contractual indemnification obligation. The Company accrues for a liability when it is both probable that a liability has been incurred and the amount of the loss can be reasonably estimated. Significant judgment is required in both the determination of probability and the determination as to whether a loss is reasonably estimable. In addition, in the event the Company determines that a loss is not probable, but is reasonably possible, and it becomes possible to develop what the Company believes to be a reasonable range of possible loss, then the Company will include disclosure related to such matter as appropriate and in compliance with ASC 450. The accruals or estimates, if any, resulting from the foregoing analysis, are reviewed at least quarterly and adjusted to reflect the impact of negotiations, settlements, rulings, advice of legal counsel and other information and events pertaining to a particular matter. To the extent there is a reasonable possibility that the losses could exceed the amounts already accrued, the Company will, as applicable, adjust the accrual in the period the determination is made, disclose an estimate of the additional loss or range of loss, indicate that the estimate is immaterial with respect to its financial statements as a whole or, if the amount of such adjustment cannot be reasonably estimated, disclose that an estimate cannot be made. From time to time, third parties assert claims against the Company regarding intellectual property rights, privacy issues and other matters arising in the ordinary course of business. Although the Company cannot be certain of the outcome of any litigation or the disposition of any claims, nor the amount of damages and exposure, if any, that the Company could incur, the Company currently believes that the final disposition of all existing matters will not have a material adverse effect on our business, results of operations, financial condition or cash flows. In addition, in the ordinary course of business, the Company is also subject to periodic threats of lawsuits, investigations and claims. Regardless of the outcome, litigation can have an adverse impact on the Company because of defense and settlement costs, diversion of management resources and other factors.

Description of Business and B19

Description of Business and Basis of Presentation (Policies)	3 Months Ended
	Mar. 31, 2017
Accounting Policies [Abstract]
Summary of Operations	LivePerson, Inc. (the “Company” or “LivePerson”) was incorporated in the State of Delaware in November 1995 and the LivePerson service was introduced in November 1998. In April 2000, the Company completed an initial public offering and is currently traded on the Nasdaq Global Select Market and the Tel Aviv Stock Exchange. LivePerson is headquartered in New York City, with a U.S. office in Alpharetta (Georgia) and international offices in Amsterdam, Berlin, London, Mannheim, Melbourne, Milan, Paris, Ra'anana (Israel), Reading (UK), and Tokyo. LivePerson provides mobile and online business messaging solutions that power digital communication between brands and consumers. LiveEngage, the Company’s enterprise-class, cloud-based platform, enables businesses to create a meaningful connection with consumers via messaging. As consumers have reoriented their digital lives around the smartphone, messaging apps have become their preferred communication channel to connect with each other. LivePerson allows brands to align with this new consumer preference, and deploy messaging at scale for customer care and sales, instead of demanding that consumers use email or call a 1-800 number. LiveEngage was designed to securely deploy messaging at scale for brands with tens of millions of customers and many thousands of customer care agents. Key benefits include a sophisticated proactive targeting engine and a robust suite of text and mobile messaging, real-time chat messaging, content delivery, customer sentiment, and cobrowsing offerings that power intelligent digital engagement with consumers. LiveEngage powers conversations across each of a brand’s primary digital channels, including mobile apps, mobile and desktop web browsers, social media and third-party consumer messaging platforms. LivePerson optimizes campaign outcomes for sales and service transaction by combining website visitor data with other historical, behavioral, and operational information to develop insights into each step of a consumer’s journey. LivePerson’s products, coupled with its domain knowledge, industry expertise and consulting services, have been proven to maximize the effectiveness of consumer engagement. The Company’s primary revenue source is from the sale of LivePerson services to businesses of all sizes. The Company also offers an online marketplace that connects independent service providers (“Experts”) who provide information and knowledge for a fee via mobile and online messaging with individual consumers (“Users”).
Basis of Presentation	Basis of Presentation The accompanying condensed consolidated financial statements as of March 31, 2017 and for the three months ended March 31, 2017 and 2016 are unaudited. In the opinion of management, the unaudited condensed consolidated financial statements have been prepared on the same basis as the annual financial statements and reflect all adjustments, which include only normal recurring adjustments, necessary to present fairly the consolidated financial position of LivePerson as of March 31, 2017 , and the consolidated results of operations, comprehensive loss and cash flows for the interim periods ended March 31, 2017 and 2016 . The financial data and other information disclosed in these notes to the condensed consolidated financial statements related to these periods are unaudited. The results of operations for any interim period are not necessarily indicative of the results of operations for any other future interim period or for a full fiscal year. The condensed consolidated balance sheet at December 31, 2016 has been derived from audited consolidated financial statements at that date. Certain information and note disclosures normally included in financial statements prepared in accordance with generally accepted accounting principles in the United States (“GAAP”) have been condensed or omitted pursuant to the rules and regulations of the Securities and Exchange Commission (the “SEC”). These unaudited interim condensed consolidated financial statements should be read in conjunction with the Company’s audited consolidated financial statements and notes thereto for the year ended December 31, 2016 included in the Company’s Annual Report on Form 10-K filed with the SEC on March 10, 2017.
Principles of Consolidation	Principles of Consolidation The condensed consolidated financial statements include the Company and its wholly-owned subsidiaries. All intercompany balances and transactions have been eliminated.
Reclassification	Reclassification For comparability, certain 2016 amounts have been reclassified, where appropriate, to conform to the financial presentation in 2017 .
Use of Estimates	Use of Estimates The preparation of the Company’s condensed consolidated financial statements in conformity with 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 condensed consolidated financial statements and the reported amounts of income and expenses during the reporting period. These estimates are based on information available as of the date of the condensed consolidated financial statements; therefore, actual results could differ from management’s estimates.
Recently Issued Accounting Standards	Recently Issued Accounting Standards In January 2017, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update No. 2017-04, "Intangibles —Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment" (“ASU 2017-04”). This update addresses concerns over the cost and complexity of the two-step goodwill impairment test. The amendments in this update remove the second step of the test. An entity will apply a one-step quantitative test and record the amount of goodwill impairment as the excess of a reporting unit's carrying amount over its fair value, not to exceed the total amount of goodwill allocated to the reporting unit. The new guidance does not amend the optional qualitative assessment of goodwill impairment. ASU 2017-04 is effective for financial statements issued for annual periods beginning after December 15, 2019, and interim periods within those annual periods. The Company does not expect the adoption of ASU 2017-04 to have a material effect on its financial position, results of operations or cash flows. In January 2017, the FASB issued Accounting Standards Update No. 2017-01, "Business Combinations (Topic 805): Clarifying the Definition of a Business" (“ASU 2017-01”). This update clarifies the definition of a business with the objective of adding guidance to assist entities with evaluating whether transactions should be accounted for as acquisitions (or disposals) of businesses. The amendments in this update provide a screen to determine when a set is not a business. If the screen is not met, it (1) requires that to be considered a business, a set must include, at a minimum, an input and a substantive process that together significantly contribute to the ability to create output and (2) removes the evaluation of whether a market participant could replace the missing elements. ASU 2017-01 is effective for financial statements issued for annual periods beginning after December 15, 2017, and interim periods within those annual periods. The Company does not expect the adoption of ASU 2017-01 to have a material effect on its financial position, results of operations or cash flows. In March 2016, the FASB issued Accounting Standards Update No. 2016-09, “Compensation -Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting” (“ASU 2016-09”). This update is intended to improve the accounting for employee share-based payments and affects all organizations that issue share-based payment awards to their employees. Several aspects of the accounting for share-based payment award transactions are simplified, including:(a) income tax consequences; (b) classification of awards as either equity or liabilities; and (c) classification on the statement of cash flows. The Company adopted this ASU as of the beginning of the first quarter of 2017 and has elected to continue to estimate expected forfeitures over the course of a vesting period. Further, the ASU eliminates the requirement to delay the recognition of excess tax benefits until they reduce current taxes payable. The adoption of ASU 2016-09 did not have any material impact on the Company’s financial statements. In February 2016, the FASB issued Accounting Standards Update No. 2016-02, “Leases” (“ASU 2016-02”). ASU 2016-02 requires lessees to recognize the following for all leases (with the exception of short-term leases) at the commencement date: a lease liability, which is a lessee‘s obligation to make lease payments arising from a lease, measured on a discounted basis; and a right-of-use asset, which is an asset that represents the lessee’s right to use, or control the use of, a specified asset for the lease term. Under the new guidance, lessor accounting is largely unchanged. Certain targeted improvements were made to align, where necessary, lessor accounting with the lessee accounting model and Topic 606, “Revenue from Contracts with Customers”. The new lease guidance also simplified the accounting for sale and leaseback transactions primarily because lessees must recognize lease assets and lease liabilities. Lessees will no longer be provided with a source of off-balance sheet financing. Lessees (for capital and operating leases) and lessors (for sales-type, direct financing, and operating leases) must apply a modified retrospective transition approach for leases existing at, or entered into after, the beginning of the earliest comparative period presented in the financial statements. The modified retrospective approach would not require any transition accounting for leases that expired before the earliest comparative period presented. Lessees and lessors may not apply a full retrospective transition approach. ASU 2016-02 is effective for financial statements issued for annual periods beginning after December 15, 2018. While the Company is currently assessing the impact ASU 2016-02 will have on the consolidated financial statements, the Company expects the primary impact to its consolidated financial position upon adoption will be the recognition, on a discounted basis, of its minimum commitments under non-cancelable operating leases on the consolidated balance sheets resulting in the recording of right of use assets and lease obligations. The Company is also currently evaluating the timing of adoption and the impact that the standard will have on its condensed consolidated financial statements and related disclosures. The Company's current minimum commitments under noncancelable operating leases are disclosed in Note 9. In May 2014, the FASB issued Accounting Standards Update No. 2014-09, “Revenue from Contracts with Customers” (“ASU 2014-09”), which supersedes most existing revenue recognition guidance under GAAP. The core principle of ASU 2014-09 is to recognize revenues when promised goods or services are transferred to customers in an amount that reflects the consideration to which an entity expects to be entitled for those goods or services. ASU 2014-09 defines a five step process to achieve this core principle and, in doing so, more judgment and estimates may be required within the revenue recognition process than are required under existing GAAP. The standard is effective for annual periods beginning after December 15, 2017, and interim periods therein, using either of the following transition methods: (i) a full retrospective approach reflecting the application of the standard in each prior reporting period with the option to elect certain practical expedients, or (ii) a retrospective approach with the cumulative effect of initially adopting ASU 2014-09 recognized at the date of adoption (which includes additional footnote disclosures). In March 2016, the FASB issued implementation guidance that clarified the considerations in principal versus agent determination. In April 2016, FASB issued guidance that clarified identifying performance obligations and licensing implementation guidance contained in the new revenue recognition standard. In May 2016, FASB issued guidance that addresses narrow-scope improvements to the guidance on collectability, noncash consideration, and completed contracts at transition. In December 2016, FASB issued guidance to make minor corrections or minor improvements to the Codification that are not expected to have a significant effect on current accounting practice or create a significant administrative cost to most entities. The Company's current revenue policy meets five core principles of ASU 2014-09 and the Company currently capitalizes the contract costs over the contracted period also in accordance with ASU 2014-09. The Company is still analyzing the impact of this ASU, but based on the current work to date the Company believes that the current revenue recognition policy currently in place already depicts the transfer of promised goods or services to customers in an amount that reflects the consideration to which the Company expects to be entitled in exchange for those goods or services and as a result the adoption of this ASU is not expected to have a material impact on the Company's financial statements.
Revenue Recognition	Revenue Recognition The majority of the Company’s revenue is generated from monthly service revenues and related professional services from the sale of the LivePerson services. Because the Company provides its application as a service, the Company follows the provisions of FASB Accounting Standards Codification (“ASC”) 605-10-S99, “Revenue Recognition” and ASC 605-25, “Revenue Recognition with Multiple-Element Arrangements.” The Company charges a monthly, quarterly or annual fee, which varies by type of service, the level of customer usage and website traffic, and in some cases, the number of orders placed via the Company’s online engagement solutions. For certain of the Company’s larger customers, the Company may provide call center labor through an arrangement with one or more of several qualified vendors. For most of these customers, the Company passes the fee it incurs with the labor provider and its fee for the hosted services through to its customers in the form of a fixed fee for each order placed via the Company’s online engagement solutions. For these Pay for Performance (“PFP”) arrangements, in accordance with ASC 605-45, “Principal Agent Considerations,” the Company records revenue for transactions in which it acts as an agent on a net basis, and revenue for transactions in which it acts as a principal on a gross basis. The Company also sells certain of the LivePerson services directly via Internet download. These services are marketed as LiveEngage for small to medium-sized businesses, and are paid for almost exclusively by credit card. Credit card payments accelerate cash flow and reduce the Company’s collection risk, subject to the merchant bank’s right to hold back cash pending settlement of the transactions. Sales of LiveEngage may occur with or without the assistance of an online sales representative, rather than through face-to-face or telephone contact that is typically required for traditional direct sales. The Company recognizes monthly service revenue based upon the fee charged for the LivePerson services, provided that there is persuasive evidence of an arrangement, no significant Company obligations remain, collection of the resulting receivable is probable and the amount of fees to be paid is fixed or determinable. The Company’s service agreements typically have twelve month terms and, in some cases, are terminable or may terminate upon 30 to 90 days’ notice without penalty. When professional service fees add value to the customer on a standalone basis, the Company recognizes professional service fees upon completion and customer acceptance. The Company establishes a selling price hierarchy for determining the selling price of a deliverable, which is based on: (a) vendor-specific objective evidence; (b) third-party evidence; or (c) best estimated selling price. If a professional services arrangement does not qualify for separate accounting, the Company recognizes the fees, and the related labor costs, ratably over the contracted period. For revenue from the Company’s Consumer segment generated from online transactions between Experts and Users, the Company recognizes revenue net of the Expert fees in accordance with ASC 605-45, “Principal Agent Considerations,” due primarily to the fact that the Expert is the primary obligor. Additionally, the Company performs as an agent without any risk of loss for collection, and is not involved in selecting the Expert or establishing the Expert’s fee. The Company collects a fee from the User and retains a portion of the fee, and then remits the balance to the Expert. Revenue from these transactions is recognized when there is persuasive evidence of an arrangement, no significant Company obligations remain, collection of the resulting receivable is probable and the amount of fees to be paid is fixed and determinable.
Net Loss Per Share	Net Loss Per Share The Company calculates earnings per share (“EPS”) in accordance with the provisions of ASC 260-10 and the guidance of SEC Staff Accounting Bulletin (“SAB”) No. 98. Under ASC 260-10, basic EPS excludes dilution for common stock equivalents and is computed by dividing net income or loss attributable to common shareholders by the weighted average number of common shares outstanding for the period. All options, warrants or other potentially dilutive instruments issued for nominal consideration are required to be included in the calculation of basic and diluted net income attributable to common stockholders. Diluted EPS is calculated using the treasury stock method and reflects the potential dilution that could occur if securities or other contracts to issue common stock were exercised or converted into common stock and resulted in the issuance of common stock.
Segment Information	Segment Information The Company accounts for its segment information in accordance with the provisions of ASC 280-10, “Segment Reporting.” ASC 280-10 establishes annual and interim reporting standards for operating segments of a company. ASC 280-10 requires disclosures of selected segment-related financial information about products, major customers, and geographic areas based on the Company’s internal accounting methods. The Company is organized into two operating segments for purposes of making operating decisions and assessing performance. The Business segment facilitates real-time online interactions – chat, voice and content delivery across multiple channels and screens for global corporations of all sizes. The Consumer segment facilitates online transactions between Experts and Users and sells its services to consumers. Both segments currently generate their revenue primarily in the United States. The chief operating decision maker, who is the chief executive officer, evaluates performance, makes operating decisions, and allocates resources based on the operating income of each segment. The reporting segments follow the same accounting polices used in the preparation of the Company’s condensed consolidated financial statements which are described in the summary of significant accounting policies. The Company allocates cost of revenue, sales and marketing and amortization of purchased intangibles to the segments, but it does not allocate product development expenses, general and administrative expenses, restructuring costs and income tax expense because management does not use this information to measure performance of the operating segments. There are currently no inter-segment sales.
Goodwill and Intangible Assets	Amortization expense is calculated over the estimated useful life of the asset.
Stock-Based Compensation	Stock-Based Compensation The Company follows FASB ASC 718-10, “Stock Compensation,” which addresses the accounting for transactions in which an entity exchanges its equity instruments for goods or services, with a primary focus on transactions in which an entity obtains employee services in share-based payment transactions. ASC 718-10 requires measurement of the cost of employee services received in exchange for an award of equity instruments based on the grant-date fair value of the award (with limited exceptions). Incremental compensation costs arising from subsequent modifications of awards after the grant date must be recognized.

Net Loss Per Share (Tables)

Net Loss Per Share (Tables)	3 Months Ended
	Mar. 31, 2017
Earnings Per Share [Abstract]
Reconciliation of Shares Used in Calculating Basic and Diluted Earnings Per Share	A reconciliation of shares used in calculating basic and diluted net loss per share follows: Three Months Ended March 31, 2017 2016 Basic 55,975,093 56,386,003 Effect of assumed exercised options — — Diluted 55,975,093 56,386,003

Segment Information (Tables)

Segment Information (Tables)	3 Months Ended
	Mar. 31, 2017
Segment Reporting [Abstract]
Summary of Financial Information by Segment	Summarized financial information by segment for the three months ended March 31, 2017 , based on the Company’s internal financial reporting system utilized by the Company’s chief operating decision maker, follows (amounts in thousands): Business Consumer Corporate Consolidated Revenue: Hosted services – Business $ 41,493 $ — $ — $ 41,493 Hosted services – Consumer — 4,170 — 4,170 Professional services 5,256 — — 5,256 Total revenue 46,749 4,170 — 50,919 Cost of revenue 12,906 875 — 13,781 Sales and marketing 19,543 2,157 — 21,700 Amortization of purchased intangibles 472 — — 472 Unallocated corporate expenses — — 19,890 19,890 Operating income (loss) $ 13,828 $ 1,138 $ (19,890 ) $ (4,924 ) Summarized financial information by segment for the three months ended March 31, 2016 , based on the Company’s internal financial reporting system utilized by the Company’s chief operating decision maker, follows (amounts in thousands): Business Consumer Corporate Consolidated Revenue: Hosted services – Business $ 45,959 $ — $ — $ 45,959 Hosted services – Consumer — 3,766 — 3,766 Professional services 5,739 — — 5,739 Total revenue 51,698 3,766 — 55,464 Cost of revenue 15,238 626 — 15,864 Sales and marketing 21,013 1,663 — 22,676 Amortization of purchased intangibles 924 — — 924 Unallocated corporate expenses — — 18,743 18,743 Operating income (loss) $ 14,523 $ 1,477 $ (18,743 ) $ (2,743 )
Long-Lived Assets by Geographic Region	The following table presents the Company’s long-lived assets by geographic region for the periods presented (amounts in thousands): March 31, December 31, 2017 2016 United States $ 93,973 $ 93,845 Israel 13,397 13,940 Australia 9,308 9,496 Netherlands 7,372 7,495 Other (1) 2,828 2,711 Total long-lived assets $ 126,878 $ 127,487 (1) United Kingdom, Germany, Japan, France and Italy

Goodwill and Intangible Assets

Goodwill and Intangible Assets (Tables)	3 Months Ended
	Mar. 31, 2017
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Goodwill	The changes in the carrying amount of goodwill for the three months ended March 31, 2017 are as follows (amounts in thousands): Business Consumer Consolidated Balance as of December 31, 2016 $ 72,221 $ 8,024 $ 80,245 Adjustments to goodwill: Foreign exchange adjustment 33 — 33 Balance as of March 31, 2017 $ 72,254 $ 8,024 $ 80,278
Summary of Intangible Assets	Intangible assets are summarized as follows (see Note 8) (amounts in thousands): As of March 31, 2017 Gross Carrying Amount Accumulated Amortization Net Carrying Amount Weighted Average Amortization Period Amortizing intangible assets: Technology $ 28,192 $ (20,695 ) $ 7,497 5.3 years Customer relationships 15,843 (9,226 ) 6,617 8.0 years Trade names 1,297 (1,283 ) 14 2.1 years Non-compete agreements 1,449 (1,291 ) 158 2.3 years Patents 1,277 (402 ) 875 12.6 years Other 262 (235 ) 27 2.7 years Total $ 48,320 $ (33,132 ) $ 15,189 As of December 31, 2016 Gross Carrying Amount Accumulated Amortization Net Carrying Amount Weighted Average Amortization Period Amortizing intangible assets: Technology $ 28,018 $ (19,736 ) $ 8,282 5.3 years Customer relationships 16,009 (8,857 ) 7,152 8.0 years Trade names 1,295 (1,277 ) 18 2.1 years Non-compete agreements 1,446 (1,220 ) 226 2.3 years Patents 1,180 (376 ) 804 12.4 years Other 263 (235 ) 28 2.7 years Total $ 48,211 $ (31,701 ) $ 16,510
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense	Estimated amortization expense for the next five years is as follows (amounts in thousands): Estimated Amortization Expense 2017 $ 3,241 2018 2,565 2019 2,357 2020 2,162 2021 1,953 Thereafter 2,911 Total $ 15,189

Property and Equipment (Tables)

Property and Equipment (Tables)	3 Months Ended
	Mar. 31, 2017
Property, Plant and Equipment [Abstract]
Summary of Property and Equipment	The following table presents the detail of property and equipment for the periods presented (amounts in thousands): March 31, December 31, Computer equipment and software $ 85,835 $ 82,477 Furniture, equipment and building improvements 15,122 15,027 100,957 97,504 Less: accumulated depreciation (71,900 ) (69,107 ) Total $ 29,057 $ 28,397

Accrued Expenses and Other Cu24

Accrued Expenses and Other Current Liabilities (Tables)	3 Months Ended
	Mar. 31, 2017
Payables and Accruals [Abstract]
Accrued Liabilities	The following table presents the detail of accrued expenses and other current liabilities for the periods presented (amounts in thousands): March 31, December 31, Payroll and other employee related costs $ 11,354 $ 15,468 Professional services and consulting and other vendor fees 12,624 15,277 Unrecognized tax benefits 4,454 4,240 Sales commissions 1,787 3,312 Contingent earnout (see Notes 8) — 210 Other 1,652 1,743 Total $ 31,871 $ 40,250

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	3 Months Ended
	Mar. 31, 2017
Fair Value Disclosures [Abstract]
Fair Value, Assets Measured on Recurring Basis	The Company ’ s assets and liabilities that are measured at fair value on a recurring basis, by level, within the fair value hierarchy as of March 31, 2017 and December 31, 2016 , are summarized as follows (amounts in thousands). The Company’s restricted cash balance of $4.0 million at March 31, 2017 and December 31, 2016 , respectively, is not held in a money market account and is not included in the following table. March 31, 2017 December 31, 2016 Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Assets: Cash equivalents: Money market funds $ 3,350 $ — $ — $ 3,350 $ 3,076 $ — $ — $ 3,076 Foreign currency derivative contracts — 1,750 — 1,750 — 108 — 108 Total assets $ 3,350 $ 1,750 $ — $ 5,100 $ 3,076 $ 108 $ — $ 3,184 Liabilities: Contingent earn-outs $ — $ — $ — $ — $ — $ — $ 210 $ 210 Foreign currency derivative contracts — 4 — 4 — 66 — 66 Total liabilities $ — $ 4 $ — $ 4 $ — $ 66 $ 210 $ 276
Change in Fair Value of Level 3 Liabilities	The changes in fair value of the level 3 liabilities are as follows (amounts in thousands): Contingent Earn-Out March 31, 2017 December 31, 2016 Balance, Beginning of Period $ 210 $ 377 Cash payments (210 ) (167 ) Balance, End of Period $ — $ 210
Schedule of Derivative Instruments	The following summarizes certain information regarding the Company’s outstanding foreign currency derivative contracts related primarily to intercompany receivables and payables for the periods presented (in thousands): As of March 31, 2017 As of December 31, 2016 Notional amount of foreign currency derivative contracts $ 31,959 $ 44,438 Fair value of foreign currency derivatives contracts $ 1,746 $ 42
Schedule of Derivative Liabilities at Fair Value	The fair value of the Company’s derivative instruments is summarized below (in thousands): Fair Value of Derivative Instruments Balance Sheet Location As of March 31, 2017 As of December 31, 2016 Derivative Assets Derivatives not designated as hedging instruments: Foreign currency derivatives contracts Prepaid expenses and other current assets $ 1,750 $ 108 Derivative Liabilities Derivatives not designated as hedging instruments: Foreign currency derivatives contracts Accrued expenses and other liabilities $ 4 $ 66
Gain (Losses) on Derivative Instruments Recognized in Income Statement	The following summarizes certain information regarding the Company’s derivatives that are not designated or are not effective as hedges (in thousands): Gain (losses) on Derivative Instruments Recognized in Statements of Operations Three Months Ended March 31, Location 2017 2016 Foreign currency derivatives contracts Other expense $ 175 $ 481

Stockholders' Equity (Tables)

Stockholders' Equity (Tables)	3 Months Ended
	Mar. 31, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Weighted Average Assumptions of Fair Value Options Using Black-Scholes Option-Pricing Model	The fair value of each option grant is estimated on the date of grant using the Black-Scholes option-pricing model with the following weighted average assumptions: Three Months Ended March 31, 2017 2016 Dividend yield 0.0% 0.0% Risk-free interest rate 1.9% 1.3% Expected life (in years) 5 5 Historical volatility 47.0% 47.3%
Summary of Stock Option Activity and Weighted Average Exercise Prices	A summary of the Company’s stock option activity and weighted average exercise prices follows: Stock Option Activity Weighted Average Remaining Contractual Term (in years) Aggregate Intrinsic Value (in thousands) Options (in thousands) Weighted Average Exercise Price Balance outstanding at December 31, 2016 7,769 $ 10.88 Granted 108 6.80 Exercised (45 ) 3.63 Cancelled or expired (307 ) 10.92 Balance outstanding at March 31, 2017 7,525 $ 10.86 5.84 $ 1,717 Options vested and expected to vest 7,144 $ 11.00 5.68 $ 1,682 Options exercisable at March 31, 2017 5,522 $ 11.38 5.08 $ 1,630
Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range	The following table summarizes information about outstanding and vested stock options as of March 31, 2017 : Options Outstanding Options Exercisable Range of Exercise Prices Number of Shares Outstanding (in thousands) Weighted-Average Remaining Contractual Life (Years) Weighted-Average Exercise Price Number of Shares (in thousands) Weighted-Average Exercise Price $1.79 - $6.80 754 4.24 $ 4.57 502 $ 3.60 $6.97 - $8.48 856 6.69 7.40 378 7.06 $8.50 - $9.34 896 5.87 9.20 729 9.19 $9.44 - $10.05 648 7.20 9.91 428 9.88 $10.13 - $10.13 937 6.98 10.13 475 10.13 $10.31 - $12.32 805 5.60 11.21 640 11.39 $12.46 - $13.28 1,104 4.87 13.11 1,023 13.12 $13.34 - $16.98 1,153 6.05 15.27 975 15.59 $17.88 - $18.09 367 4.60 18.06 367 18.06 $18.24 - $18.24 5 5.33 18.24 5 18.24 7,525 5.84 $ 10.86 5,522 $ 11.38
Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity	A summary of the Company’s restricted stock units (“RSUs”) activity and weighted average exercise prices follows: Restricted Stock Unit Activity Number of Shares (in thousands) Weighted Average Grant Date Fair Value (Per Share) Aggregate Fair Value (in thousands) Balance outstanding at December 31, 2016 1,188 $ 8.44 $ — Awarded — — — Released (62 ) 10.31 — Forfeited (85 ) 6.78 — Non-vested and outstanding at March 31, 2017 1,041 $ 8.43 $ 7,133 Expected to vest 812 $ 8.75 $ 5,564

Restructuring (Tables)

Restructuring (Tables)	3 Months Ended
	Mar. 31, 2017
Restructuring and Related Activities [Abstract]
Restructuring and Related Costs	The following table present the detail of the liability for the Company's restructuring charges for the periods presented (amounts in thousands): March 31, 2017 December 31, 2016 Balance, Beginning of the year $ 2,551 $ 1,328 Severance and other associated costs 110 1,585 Cash payments (1,001 ) (1,328 ) Wind down cost legacy platform 130 966 Balance, End of year $ 1,790 $ 2,551

Revenue Recognition (Details)

Revenue Recognition (Details)	3 Months Ended
	Mar. 31, 2017
Revenue Recognition [Abstract]
Typical service agreements	12 months
Minimum [Member]
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Typical service agreements termination notice period	30 days
Maximum [Member]
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Typical service agreements termination notice period	90 days

Net Loss Per Share (Narrative)

Net Loss Per Share (Narrative) (Details) - shares	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Earnings Per Share [Abstract]
Effect of option to purchase share of common stock on diluted net income per share (in shares)	8,566,220	9,748,493

Net Loss Per Share (Reconciliat

Net Loss Per Share (Reconciliation of Shares Used in Calculating Basic and Diluted Earnings Per Share) (Details) - shares	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Earnings Per Share [Abstract]
Basic (in shares)	55,975,093	56,386,003
Effect of assumed exercised options (in shares)	0	0
Diluted (in shares)	55,975,093	56,386,003

Segment Information (Narrative)

Segment Information (Narrative) (Details)	3 Months Ended
	Mar. 31, 2017segment
Segment Reporting [Abstract]
Number of operating segments	2

Segment Information (Summary of

Segment Information (Summary of Financial Information by Segment) (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2017	Mar. 31, 2016
Revenue:
Hosted services – Business		$ 41,493	$ 45,959
Hosted services – Consumer		4,170	3,766
Professional services		5,256	5,739
Total revenue		50,919	55,464
Cost of revenue	[1],[2],[3]	13,781	15,864
Sales and marketing	[2],[3]	21,700	22,676
Amortization of purchased intangibles	[2],[3]	472	924
Unallocated corporate expenses		19,890	18,743
Operating income (loss)		(4,924)	(2,743)
Corporate [Member]
Revenue:
Unallocated corporate expenses		19,890	18,743
Operating income (loss)		(19,890)	(18,743)
Business [Member] | Operating Segments [Member]
Revenue:
Hosted services – Business		41,493	45,959
Professional services		5,256	5,739
Total revenue		46,749	51,698
Cost of revenue		12,906	15,238
Sales and marketing		19,543	21,013
Amortization of purchased intangibles		472	924
Operating income (loss)		13,828	14,523
Consumer [Member] | Operating Segments [Member]
Revenue:
Hosted services – Consumer		4,170	3,766
Total revenue		4,170	3,766
Cost of revenue		875	626
Sales and marketing		2,157	1,663
Operating income (loss)		$ 1,138	$ 1,477
[1]	Amounts include amortization expense as follows: Cost of revenue $959 thousand and $697 thousand for the three months ended March 31, 2017 and 2016, respectively.Amounts include amortization expense as follows: Cost of revenue $2,091 thousand and $2,439 thousand for the three months ended March 31, 2017 and 2016, respectively.
[2]	Amounts include depreciation expense as follows: Cost of revenue $1,765 thousand and $2,338 thousand for the three months ended March 31, 2017 and 2016, respectively, Sales and marketing $381 thousand and $279 thousand for the three months ended March 31, 2017 and 2016, respectively, General and administrative $249 thousand and $399 thousand for the three months ended March 31, 2017 and 2016, respectively, and Product development $398 thousand and $151 thousand for the three months ended March 31, 2017 and 2016, respectively. Amounts include depreciation expense as follows: Cost of revenue $6,469 thousand and $6,491 thousand for the three months ended March 31, 2017 and 2016, respectively, Sales and marketing $1,012 thousand and $819 thousand for the three months ended March 31, 2017 and 2016, respectively, General and administrative $1,215 thousand and $663 thousand for the three months ended March 31, 2017 and 2016, respectively, and Product development $749 thousand and $626 thousand for the three months ended March 31, 2017 and 2016, respectively.
[3]	Amounts include stock compensation expense as follows: Cost of revenue $75 thousand and $10 thousand for the three months ended March 31, 2017 and 2016, respectively, Sales and marketing $654 thousand and $630 thousand for the three months ended March 31, 2017 and 2016, respectively, General and administrative $662 thousand and $852 thousand for the three months ended March 31, 2017 and 2016, respectively and Product development $522 thousand and $827 thousand for the three months ended March 31, 2017 and 2016, respectively. Amounts include stock compensation expense as follows: Cost of revenue $342 thousand and $1,092 thousand for thethree months ended March 31, 2017 and 2016, respectively, Sales and marketing $1,936 thousand and $2,292 thousand for the three months ended March 31, 2017 and 2016, respectively, General and administrative $2,552 thousand and $2,590 thousand for the three months ended March 31, 2017 and 2016, respectively and Product development $2,770 thousand and $2,819 thousand for the three months ended March 31, 2017 and 2016, respectively.

Segment Information (Revenues A

Segment Information (Revenues Attributable to Domestic and Foreign Operations) (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2017	Mar. 31, 2016
Segment Reporting Information [Line Items]
Revenue		$ 50,919	$ 55,464
Total Americas [Member]
Segment Reporting Information [Line Items]
Revenue		33,656	39,336
United States [Member]
Segment Reporting Information [Line Items]
Revenue		31,684	37,790
Other Americas [Member]
Segment Reporting Information [Line Items]
Revenue	[1]	1,972	1,546
EMEA [Member]
Segment Reporting Information [Line Items]
Revenue	[2],[3]	13,513	11,606
APAC [Member]
Segment Reporting Information [Line Items]
Revenue	[4]	3,750	4,522
United Kingdom [Member]
Segment Reporting Information [Line Items]
Revenue	[2]	$ 9,000	$ 8,000
[1]	Canada, Latin America and South America
[2]	Europe, the Middle East and Africa (“EMEA”)
[3]	Includes revenues from the United Kingdom of $9.0 million and $8.0 million for the three months ended March 31, 2017 and 2016, respectively.
[4]	Asia-Pacific (“APAC”)

Segment Information (Long-Lived

Segment Information (Long-Lived Assets by Geographic Region) (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Segment Reporting Information [Line Items]
Total long-lived assets	$ 126,878	$ 127,487
United States [Member]
Segment Reporting Information [Line Items]
Total long-lived assets	93,973	93,845
Israel [Member]
Segment Reporting Information [Line Items]
Total long-lived assets	13,397	13,940
Australia [Member]
Segment Reporting Information [Line Items]
Total long-lived assets	9,308	9,496
Netherlands [Member]
Segment Reporting Information [Line Items]
Total long-lived assets	7,372	7,495
Other [Member]
Segment Reporting Information [Line Items]
Total long-lived assets	$ 2,828	$ 2,711

Goodwill and Intangible Asset35

Goodwill and Intangible Assets (Changes in Carrying Amount of Goodwill) (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2017USD ($)
Goodwill [Line Items]
Beginning Balance	$ 80,245
Ending Balance	80,278
Business [Member]
Goodwill [Line Items]
Beginning Balance	72,221
Ending Balance	72,254
Consumer [Member]
Goodwill [Line Items]
Beginning Balance	8,024
Ending Balance	8,024
Synchronite, LLC [Member]
Goodwill [Line Items]
Foreign exchange adjustment	33
Synchronite, LLC [Member] | Business [Member]
Goodwill [Line Items]
Foreign exchange adjustment	$ 33

Goodwill and Intangible Asset36

Goodwill and Intangible Assets (Summary of Intangible Assets) (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2017	Dec. 31, 2016
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 48,320	$ 48,211
Accumulated Amortization	(33,132)	(31,701)
Net Carrying Amount	15,189	16,510
Technology [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	28,192	28,018
Accumulated Amortization	(20,695)	(19,736)
Net Carrying Amount	$ 7,497	$ 8,282
Weighted Average Amortization Period	5 years 3 months 18 days	5 years 3 months 18 days
Customer relationships [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 15,843	$ 16,009
Accumulated Amortization	(9,226)	(8,857)
Net Carrying Amount	$ 6,617	$ 7,152
Weighted Average Amortization Period	8 years	8 years 18 days
Trade names [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 1,297	$ 1,295
Accumulated Amortization	(1,283)	(1,277)
Net Carrying Amount	$ 14	$ 18
Weighted Average Amortization Period	2 years 1 month	2 years 1 month 12 days
Non-compete agreements [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 1,449	$ 1,446
Accumulated Amortization	(1,291)	(1,220)
Net Carrying Amount	$ 158	$ 226
Weighted Average Amortization Period	2 years 3 months 12 days	2 years 3 months 12 days
Patents [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 1,277	$ 1,180
Accumulated Amortization	(402)	(376)
Net Carrying Amount	$ 875	$ 804
Weighted Average Amortization Period	12 years 7 months 9 days	12 years 4 months 18 days
Other [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 262	$ 263
Accumulated Amortization	(235)	(235)
Net Carrying Amount	$ 27	$ 28
Weighted Average Amortization Period	2 years 8 months 12 days	2 years 8 months 18 days

Goodwill and Intangible Asset37

Goodwill and Intangible Assets (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Goodwill and Intangible Assets Disclosure [Abstract]
Aggregate amortization expense for intangible assets	$ 1,431	$ 1,621

Goodwill and Intangible Asset38

Goodwill and Intangible Assets (Future Amortization Expense) (Details) $ in Thousands	Mar. 31, 2017USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]
2,017	$ 3,241
2,018	2,565
2,019	2,357
2,020	2,162
2,021	1,953
Thereafter	2,911
Total	$ 15,189

Property and Equipment (Details

Property and Equipment (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Property, Plant and Equipment [Line Items]
Property plant and equipment gross	$ 100,957	$ 97,504
Less: accumulated depreciation	71,900	69,107
Total	29,057	28,397
Computer Equipment And Software [Member]
Property, Plant and Equipment [Line Items]
Property plant and equipment gross	85,835	82,477
Furniture, Equipment and Building Improvements [Member]
Property, Plant and Equipment [Line Items]
Property plant and equipment gross	$ 15,122	$ 15,027

Accrued Expenses and Other Cu40

Accrued Expenses and Other Current Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Payables and Accruals [Abstract]
Payroll and other employee related costs	$ 11,354	$ 15,468
Professional services and consulting and other vendor fees	12,624	15,277
Unrecognized tax benefits	4,454	4,240
Sales commissions	1,787	3,312
Contingent earnout (see Notes 8)	0	210
Other	1,652	1,743
Total	$ 31,871	$ 40,250

Fair Value Measurements (Financ

Fair Value Measurements (Financial Assets and Liabilities) (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Fair Value Disclosures [Abstract]
Restricted cash balance	$ 3,978	$ 3,962
Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	5,100	3,184
Liabilities	4	276
Recurring [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	3,350	3,076
Recurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	1,750	108
Liabilities	4	66
Recurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Liabilities	0	210
Recurring [Member] | Contingent Earn-Out [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Liabilities	0	210
Recurring [Member] | Contingent Earn-Out [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Liabilities	0	210
Recurring [Member] | Money market funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	3,350	3,076
Recurring [Member] | Money market funds [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	3,350	3,076
Recurring [Member] | Foreign currency derivative contracts [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	1,750	108
Liabilities	4	66
Recurring [Member] | Foreign currency derivative contracts [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets		108
Liabilities	$ 4	$ 66

Fair Value Measurements (Level

Fair Value Measurements (Level 3 Liabilities) (Details) - Recurring [Member] - Level 3 [Member] - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2017	Dec. 31, 2016
Business Combination, Contingent Consideration Arrangements, Change In Contingent Consideration Liability [Roll Forward]
Balance, Beginning of Period	$ 210	$ 377
Cash payments	(210)	(167)
Balance, End of Period	$ 0	$ 210

Fair Value Measurements (Deriva

Fair Value Measurements (Derivative Financial Instruments) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Fair Value Disclosures [Abstract]
Cash held as collateral	$ 3,978		$ 3,962
Foreign Currency Derivatives Contracts [Member]
Derivative [Line Items]
Notional amount of foreign currency derivative contracts	31,959		44,438
Fair value of foreign currency derivatives contracts	1,746		42
Foreign Currency Derivatives Contracts [Member] | Other Expense [Member]
Derivative [Line Items]
Gain (losses) on Derivative Instruments Recognized in Statements of Operations	175	$ 481
Foreign Currency Derivatives Contracts [Member] | Not Designated as Hedging Instrument [Member] | Prepaid Expenses and Other Current Assets [Member]
Derivative [Line Items]
Derivative Assets	1,750		108
Foreign Currency Derivatives Contracts [Member] | Not Designated as Hedging Instrument [Member] | Accrued Expenses And Other Liabilities [Member]
Derivative [Line Items]
Derivative Liabilities	4		$ 66
Foreign currency derivative contracts [Member] | Level 2 [Member] | Recurring [Member] | Foreign Currency Derivatives Contracts [Member] | Not Designated as Hedging Instrument [Member] | Prepaid Expenses and Other Current Assets [Member]
Derivative [Line Items]
Derivative Assets	$ 1,750

Commitments and Contingencies (

Commitments and Contingencies (Details) - USD ($)	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Commitments and Contingencies Disclosure [Abstract]
Rental expense for operating leases	$ 2,300,000	$ 2,700,000
Defined benefit plan employer matching contribution on first five percent of employee compensation	50.00%
Percentage of employees' eligible compensation for employer matching contribution	5.00%
Defined benefit plan employer contribution limit	$ 6,000
Defined benefit plan employer contribution vesting period	5 years
Defined benefit plan employer contribution	$ 400,000	$ 400,000
Letter Of Credit For Office Space [Member] | Line of Credit [Member]
Line of Credit Facility [Line Items]
Letter of credit outstanding	1,900,000
Letter Of Credit For Security Deposit [Member] | Line of Credit [Member]
Line of Credit Facility [Line Items]
Letter of credit outstanding	$ 100,000

Stockholders' Equity (Narrative

Stockholders' Equity (Narrative) (Details) - USD ($)	Apr. 30, 2017	Jun. 07, 2012	Jun. 30, 2010	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016	Nov. 21, 2016	Feb. 16, 2016	Jul. 23, 2014	Mar. 13, 2014	Dec. 10, 2012
Common Stock, Number of Shares, Par Value and Other Disclosures [Abstract]
Common stock, shares authorized				100,000,000		100,000,000
Common stock, shares issued (in shares)				58,420,922		58,276,447
Common stock, shares outstanding (in shares)				58,420,922		58,276,447
Common stock, par value (in dollars per share)				$ 0.001		$ 0.001
Preferred Stock, Number of Shares, Par Value and Other Disclosures [Abstract]
Preferred stock, shares authorized				5,000,000		5,000,000
Preferred stock, shares issued (in shares)				0		0
Preferred stock, shares outstanding (in shares)				0		0
Preferred stock, par value (in dollars per share)				$ 0.001		$ 0.001
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Per share weighed average fair value of stock options granted during the period (in dollars per share)				$ 2.92	$ 2.34
Dividend yield				0.00%	0.00%
Expected life				5 years	5 years
Period used to determine volatility				5 years
Total value of stock options exercised				$ 100,000
Incentive Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost related to nonvested share-based compensation arrangements				$ 5,900,000
Weighted average recognition period of unrecognized compensation cost				1 year 9 months 18 days
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost related to nonvested share-based compensation arrangements				$ 8,300,000
Weighted average recognition period of unrecognized compensation cost				2 years 7 months 30 days
Vesting period				4 years
1998 Plan [Member] | Incentive Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares of common stock available for issuance (up to)				5,850,000
2000 Plan [Member] | Incentive Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Increase in number of shares of common stock available for issuance				4,150,000
1998 and 2000 Plan [Member] | Incentive Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares of common stock available for issuance (up to)				10,000,000
2009 Plan [Member] | Incentive Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares of common stock available for issuance (up to)				6,800,000
Increase in number of shares of common stock available for issuance				6,000,000
Stock option term				10 years
2009 Plan [Member] | Incentive Stock Option [Member] | Scenario, Forecast [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Increase in number of shares of common stock available for issuance	4,000,000
2010 Employee Stock Purchase Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares of common stock available for issuance (up to)			1,000,000	1,200,000
Increase in number of shares of common stock available for issuance			1,000,000
2010 Employee Stock Purchase Plan [Member] | Scenario, Forecast [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares of common stock available for issuance (up to)	2,000,000
2009 Plan [Member] | 2009 Plan [Member] | Incentive Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Increase in number of shares of common stock available for issuance		4,250,000
2009 Plan [Member] | 2009 Plan [Member] | Incentive Stock Option [Member] | Scenario, Forecast [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares of common stock available for issuance (up to)	27,817,744
2012 Stock Repurchase Program [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock repurchase program, authorized amount							$ 74,000,000	$ 64,000,000	$ 50,000,000	$ 40,000,000	$ 30,000,000
Increase to authorized amount								$ 14,000,000
Shares repurchased (in shares)				142,000
Stock repurchase program, remaining authorized repurchase amount				$ 19,200,000

Stockholders' Equity (Weighted

Stockholders' Equity (Weighted Average Assumptions of Fair Value Options Using Black-Scholes Option-Pricing Model) (Details)	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Dividend yield	0.00%	0.00%
Risk-free interest rate	1.90%	1.30%
Expected life	5 years	5 years
Historical volatility	47.00%	47.30%

Stockholders' Equity (Summary o

Stockholders' Equity (Summary of Stock Option Activity and Weighted Average Exercise Prices) (Details) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2017USD ($)$ / sharesshares
Options
Beginning balance (in shares) | shares	7,769
Granted (in shares) | shares	108
Exercised (in shares) | shares	(45)
Cancelled or expired (in shares) | shares	(307)
Ending balance (in shares) | shares	7,525
Options vested and expected to vest (in shares) | shares	7,144
Options exercisable at March 31, 2017 (in shares) | shares	5,522
Weighted Average Exercise Price
Beginning balance (in dollars per share) | $ / shares	$ 10.88
Granted (in dollars per share) | $ / shares	6.80
Exercised (in dollars per share) | $ / shares	3.63
Cancelled or expired (in dollars per share) | $ / shares	10.92
Ending balance (in dollars per share) | $ / shares	10.86
Options vested and expected to vest (in dollars per share) | $ / shares	11
Options exercisable at March 31, 2017 (in dollars per share) | $ / shares	$ 11.38
Weighted Average Remaining Contractual Term (in years)
Options outstanding at March 31, 2017	5 years 10 months 2 days
Options vested and expected to vest	5 years 8 months 5 days
Options exercisable at March 31, 2017	5 years 29 days
Aggregate Intrinsic Value
Options outstanding at March 31, 2017 | $	$ 1,717
Options vested and expected to vest | $	1,682
Options exercisable at March 31, 2017 | $	$ 1,630

Stockholders' Equity (Summary48

Stockholders' Equity (Summary of Options by Range of Exercise Prices) (Details) shares in Thousands	3 Months Ended
	Mar. 31, 2017$ / sharesshares
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options outstanding, Number of shares outstanding (in shares) | shares	7,525
Options outstanding, Weighted-average remaining contractual life	5 years 10 months 2 days
Options outstanding, Weighted-average exercise price (in dollars per share)	$ 10.86
Options exercisable, Number of shares (in shares) | shares	5,522
Options exercisable, Weighted-average exercise price (in dollars per share)	$ 11.38
$1.79 - $6.80 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price range, minimum (in dollars per share)	1.79
Exercise price range, maximum (in dollars per share)	$ 6.80
Options outstanding, Number of shares outstanding (in shares) | shares	754
Options outstanding, Weighted-average remaining contractual life	4 years 2 months 27 days
Options outstanding, Weighted-average exercise price (in dollars per share)	$ 4.57
Options exercisable, Number of shares (in shares) | shares	502
Options exercisable, Weighted-average exercise price (in dollars per share)	$ 3.60
$6.97 - $8.48 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price range, minimum (in dollars per share)	6.97
Exercise price range, maximum (in dollars per share)	$ 8.48
Options outstanding, Number of shares outstanding (in shares) | shares	856
Options outstanding, Weighted-average remaining contractual life	6 years 8 months 9 days
Options outstanding, Weighted-average exercise price (in dollars per share)	$ 7.40
Options exercisable, Number of shares (in shares) | shares	378
Options exercisable, Weighted-average exercise price (in dollars per share)	$ 7.06
$8.50 - $9.34 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price range, minimum (in dollars per share)	8.50
Exercise price range, maximum (in dollars per share)	$ 9.34
Options outstanding, Number of shares outstanding (in shares) | shares	896
Options outstanding, Weighted-average remaining contractual life	5 years 10 months 13 days
Options outstanding, Weighted-average exercise price (in dollars per share)	$ 9.20
Options exercisable, Number of shares (in shares) | shares	729
Options exercisable, Weighted-average exercise price (in dollars per share)	$ 9.19
$9.44 - $10.05 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price range, minimum (in dollars per share)	9.44
Exercise price range, maximum (in dollars per share)	$ 10.05
Options outstanding, Number of shares outstanding (in shares) | shares	648
Options outstanding, Weighted-average remaining contractual life	7 years 2 months 12 days
Options outstanding, Weighted-average exercise price (in dollars per share)	$ 9.91
Options exercisable, Number of shares (in shares) | shares	428
Options exercisable, Weighted-average exercise price (in dollars per share)	$ 9.88
$10.13 - $10.13 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price range, minimum (in dollars per share)	10.13
Exercise price range, maximum (in dollars per share)	$ 10.13
Options outstanding, Number of shares outstanding (in shares) | shares	937
Options outstanding, Weighted-average remaining contractual life	6 years 11 months 23 days
Options outstanding, Weighted-average exercise price (in dollars per share)	$ 10.13
Options exercisable, Number of shares (in shares) | shares	475
Options exercisable, Weighted-average exercise price (in dollars per share)	$ 10.13
$10.31 - $12.32 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price range, minimum (in dollars per share)	10.31
Exercise price range, maximum (in dollars per share)	$ 12.32
Options outstanding, Number of shares outstanding (in shares) | shares	805
Options outstanding, Weighted-average remaining contractual life	5 years 7 months 6 days
Options outstanding, Weighted-average exercise price (in dollars per share)	$ 11.21
Options exercisable, Number of shares (in shares) | shares	640
Options exercisable, Weighted-average exercise price (in dollars per share)	$ 11.39
$12.46 - $13.28 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price range, minimum (in dollars per share)	12.46
Exercise price range, maximum (in dollars per share)	$ 13.28
Options outstanding, Number of shares outstanding (in shares) | shares	1,104
Options outstanding, Weighted-average remaining contractual life	4 years 10 months 13 days
Options outstanding, Weighted-average exercise price (in dollars per share)	$ 13.11
Options exercisable, Number of shares (in shares) | shares	1,023
Options exercisable, Weighted-average exercise price (in dollars per share)	$ 13.12
$13.34 - $16.98 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price range, minimum (in dollars per share)	13.34
Exercise price range, maximum (in dollars per share)	$ 16.98
Options outstanding, Number of shares outstanding (in shares) | shares	1,153
Options outstanding, Weighted-average remaining contractual life	6 years 18 days
Options outstanding, Weighted-average exercise price (in dollars per share)	$ 15.27
Options exercisable, Number of shares (in shares) | shares	975
Options exercisable, Weighted-average exercise price (in dollars per share)	$ 15.59
$17.88 - $18.09 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price range, minimum (in dollars per share)	17.88
Exercise price range, maximum (in dollars per share)	$ 18.09
Options outstanding, Number of shares outstanding (in shares) | shares	367
Options outstanding, Weighted-average remaining contractual life	4 years 7 months 6 days
Options outstanding, Weighted-average exercise price (in dollars per share)	$ 18.06
Options exercisable, Number of shares (in shares) | shares	367
Options exercisable, Weighted-average exercise price (in dollars per share)	$ 18.06
$18.24 - $18.24 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price range, minimum (in dollars per share)	18.24
Exercise price range, maximum (in dollars per share)	$ 18.24
Options outstanding, Number of shares outstanding (in shares) | shares	5
Options outstanding, Weighted-average remaining contractual life	5 years 3 months 29 days
Options outstanding, Weighted-average exercise price (in dollars per share)	$ 18.24
Options exercisable, Number of shares (in shares) | shares	5
Options exercisable, Weighted-average exercise price (in dollars per share)	$ 18.24

Stockholders' Equity (Summary49

Stockholders' Equity (Summary of Restricted Stock Unit Activity and Weighted Average Exercise Price) (Details) - Restricted Stock Units (RSUs) [Member] $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2017USD ($)$ / sharesshares
Number of Shares (in thousands)
Balance outstanding at December 31, 2016 (in shares) | shares	1,188
Awarded (in shares) | shares	0
Released (in shares) | shares	(62)
Forfeited (in shares) | shares	(85)
Non-vested and outstanding at March 31, 2017 (in shares) | shares	1,041
Expected to vest (in shares) | shares	812
Weighted Average Grant Date Fair Value (usd per share)
Balance outstanding at December 31, 2016 (in dollars per share) | $ / shares	$ 8.44
Awarded (in dollars per share) | $ / shares	0
Released (in dollars per share) | $ / shares	10.31
Forfeited (in dollars per share) | $ / shares	6.78
Non-vested and outstanding at March 31, 2016 (in dollars per share) | $ / shares	8.43
Expected to vest (in dollars per share) | $ / shares	$ 8.75
Aggregate Fair Value (in thousands)
Non-vested and outstanding at March 31, 2017 | $	$ 7,133
Expected to vest | $	$ 5,564

Restructuring (Narrative) (Deta

Restructuring (Narrative) (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016	Dec. 31, 2015
Restructuring Cost and Reserve [Line Items]
Restructuring expense	[1],[2]	$ 240	$ 0
Restructuring liability		1,790		$ 2,551	$ 1,328
Accrued Expenses And Other Liabilities [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring liability		$ 1,000
[1]	Amounts include depreciation expense as follows: Cost of revenue $1,765 thousand and $2,338 thousand for the three months ended March 31, 2017 and 2016, respectively, Sales and marketing $381 thousand and $279 thousand for the three months ended March 31, 2017 and 2016, respectively, General and administrative $249 thousand and $399 thousand for the three months ended March 31, 2017 and 2016, respectively, and Product development $398 thousand and $151 thousand for the three months ended March 31, 2017 and 2016, respectively. Amounts include depreciation expense as follows: Cost of revenue $6,469 thousand and $6,491 thousand for the three months ended March 31, 2017 and 2016, respectively, Sales and marketing $1,012 thousand and $819 thousand for the three months ended March 31, 2017 and 2016, respectively, General and administrative $1,215 thousand and $663 thousand for the three months ended March 31, 2017 and 2016, respectively, and Product development $749 thousand and $626 thousand for the three months ended March 31, 2017 and 2016, respectively.
[2]	Amounts include stock compensation expense as follows: Cost of revenue $75 thousand and $10 thousand for the three months ended March 31, 2017 and 2016, respectively, Sales and marketing $654 thousand and $630 thousand for the three months ended March 31, 2017 and 2016, respectively, General and administrative $662 thousand and $852 thousand for the three months ended March 31, 2017 and 2016, respectively and Product development $522 thousand and $827 thousand for the three months ended March 31, 2017 and 2016, respectively. Amounts include stock compensation expense as follows: Cost of revenue $342 thousand and $1,092 thousand for thethree months ended March 31, 2017 and 2016, respectively, Sales and marketing $1,936 thousand and $2,292 thousand for the three months ended March 31, 2017 and 2016, respectively, General and administrative $2,552 thousand and $2,590 thousand for the three months ended March 31, 2017 and 2016, respectively and Product development $2,770 thousand and $2,819 thousand for the three months ended March 31, 2017 and 2016, respectively.

Restructuring (Restructuring Li

Restructuring (Restructuring Liability) (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2017	Dec. 31, 2016
Restructuring and Related Activities [Abstract]
Balance, Beginning of the year	$ 2,551	$ 1,328
Severance and other associated costs	110	1,585
Cash payments	(1,001)	(1,328)
Wind down cost legacy platform	130	966
Balance, End of year	$ 1,790	$ 2,551

Restructuring (Restructuring Ex

Restructuring (Restructuring Expense) (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2017	Mar. 31, 2016
Restructuring Cost and Reserve [Line Items]
Restructuring expense	[1],[2]	$ 240	$ 0
Severance and other associated costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring expense		110	0
Wind down cost legacy platform [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring expense		$ 130	$ 0
[1]	Amounts include depreciation expense as follows: Cost of revenue $1,765 thousand and $2,338 thousand for the three months ended March 31, 2017 and 2016, respectively, Sales and marketing $381 thousand and $279 thousand for the three months ended March 31, 2017 and 2016, respectively, General and administrative $249 thousand and $399 thousand for the three months ended March 31, 2017 and 2016, respectively, and Product development $398 thousand and $151 thousand for the three months ended March 31, 2017 and 2016, respectively. Amounts include depreciation expense as follows: Cost of revenue $6,469 thousand and $6,491 thousand for the three months ended March 31, 2017 and 2016, respectively, Sales and marketing $1,012 thousand and $819 thousand for the three months ended March 31, 2017 and 2016, respectively, General and administrative $1,215 thousand and $663 thousand for the three months ended March 31, 2017 and 2016, respectively, and Product development $749 thousand and $626 thousand for the three months ended March 31, 2017 and 2016, respectively.
[2]	Amounts include stock compensation expense as follows: Cost of revenue $75 thousand and $10 thousand for the three months ended March 31, 2017 and 2016, respectively, Sales and marketing $654 thousand and $630 thousand for the three months ended March 31, 2017 and 2016, respectively, General and administrative $662 thousand and $852 thousand for the three months ended March 31, 2017 and 2016, respectively and Product development $522 thousand and $827 thousand for the three months ended March 31, 2017 and 2016, respectively. Amounts include stock compensation expense as follows: Cost of revenue $342 thousand and $1,092 thousand for thethree months ended March 31, 2017 and 2016, respectively, Sales and marketing $1,936 thousand and $2,292 thousand for the three months ended March 31, 2017 and 2016, respectively, General and administrative $2,552 thousand and $2,590 thousand for the three months ended March 31, 2017 and 2016, respectively and Product development $2,770 thousand and $2,819 thousand for the three months ended March 31, 2017 and 2016, respectively.