LogMeIn (LOGM) 10-Q 29 Apr 15 2015 Q1 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	3 Months Ended
	Mar. 31, 2015	Apr. 24, 2015
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	FALSE
Document Period End Date	31-Mar-15
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	Q1
Trading Symbol	LOGM
Entity Registrant Name	LogMeIn, Inc.
Entity Central Index Key	1420302
Current Fiscal Year End Date	-19
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		24,623,623

Condensed_Consolidated_Balance

Condensed Consolidated Balance Sheets (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Current assets:
Cash and cash equivalents	$132,160	$100,960
Marketable securities	100,321	100,209
Accounts receivable (net of allowance for doubtful accounts of $301 and $278 as of December 31, 2014 and March 31, 2015, respectively)	12,640	18,286
Prepaid expenses and other current assets	13,322	4,545
Restricted cash, current portion	1,492	1,492
Deferred income tax assets	5,334	5,403
Total current assets	265,269	230,895
Property and equipment, net	15,556	13,476
Restricted cash, net of current portion	2,464	2,531
Intangibles, net	18,802	18,983
Goodwill	37,928	37,928
Other assets	5,197	4,756
Deferred income tax assets	9,271	9,280
Total assets	354,487	317,849
Current liabilities:
Accounts payable	10,403	7,055
Accrued liabilities	33,509	29,482
Deferred revenue, current portion	125,574	101,672
Total current liabilities	169,486	138,209
Deferred revenue, net of current portion	3,023	3,578
Other long-term liabilities	2,183	2,218
Total liabilities	174,692	144,005
Commitments and contingencies (Note 10)
Preferred stock, $0.01 par value - 5,000,000 shares authorized, 0 shares outstanding as of December 31, 2014 and March 31, 2015
Equity:
Common stock, $0.01 par value - 75,000,000 shares authorized as of December 31, 2014 and March 31, 2015; 26,530,977 and 26,873,108 shares issued as of December 31, 2014 and March 31, 2015, respectively; 24,418,760 and 24,667,491 outstanding as of December 31, 2014 and March 31, 2015, respectively	271	267
Additional paid-in capital	249,260	237,203
Retained Earnings	6,888	6,516
Accumulated other comprehensive loss	-4,535	-3,117
Treasury stock, at cost - 2,112,217 and 2,205,617 shares as of December 31, 2014 and March 31, 2015, respectively	-72,089	-67,025
Total equity	179,795	173,844
Total liabilities and equity	$354,487	$317,849

Condensed_Consolidated_Balance1

Condensed Consolidated Balance Sheets (Parenthetical) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, except Share data, unless otherwise specified
Statement of Financial Position [Abstract]
Allowance for doubtful accounts	$278	$301
Preferred stock, par value	$0.01	$0.01
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, shares outstanding	0	0
Common stock, par value	$0.01	$0.01
Common stock, shares authorized	75,000,000	75,000,000
Common stock, shares issued	26,873,108	26,530,977
Common stock, shares outstanding	24,667,491	24,418,760
Treasury stock, shares	2,205,617	2,112,217

Condensed_Consolidated_Stateme

Condensed Consolidated Statements of Operations (USD $)	3 Months Ended
In Thousands, except Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Income Statement [Abstract]
Revenue	$61,109	$49,020
Cost of revenue	7,982	6,120
Gross profit	53,127	42,900
Operating expenses
Research and development	9,123	6,712
Sales and marketing	34,386	27,710
General and administrative	6,706	6,677
Legal settlements	3,600
Amortization of acquired intangibles	276	203
Total operating expenses	54,091	41,302
Income from operations	-964	1,598
Interest income, net	174	111
Other (expense) income	1,225	-28
Income before income taxes	435	1,681
Provision for income taxes	-63	-677
Net income	$372	$1,004
Net income per share:
Basic	$0.02	$0.04
Diluted	$0.01	$0.04
Weighted average shares outstanding:
Basic	24,626,872	24,123,291
Diluted	25,557,184	24,749,511

Condensed_Consolidated_Stateme1

Condensed Consolidated Statements of Comprehensive Income/(Loss) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Statement of Comprehensive Income [Abstract]
Net income	$372	$1,004
Other comprehensive loss:
Net unrealized gains on marketable securities, (net of tax provision of $12 and $65 for the three months ended March 31, 2014 and 2015)	114	21
Net translation losses	-1,532	-135
Total other comprehensive loss	-1,418	-114
Comprehensive income (loss)	($1,046)	$890

Condensed_Consolidated_Stateme2

Condensed Consolidated Statements of Comprehensive Income/(Loss) (Parenthetical) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Statement of Comprehensive Income [Abstract]
Net unrealized gains on marketable securities, net of tax provision	$65	$12

Condensed_Consolidated_Stateme3

Condensed Consolidated Statements of Cash Flows (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Cash flows from operating activities
Net income	$372	$1,004
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation and amortization	2,877	2,472
Amortization of premium on investments	67	63
Amortization of debt issuance costs	23
Provision for bad debts	19	34
Provision for deferred income taxes		265
Gain on sales of marketable securities	-5
Stock-based compensation	4,853	5,438
(Gain) loss on disposal of equipment	12	-2
Changes in assets and liabilities:
Accounts receivable	5,031	1,519
Prepaid expenses and other current assets	-8,691	-916
Other assets	194	90
Accounts payable	3,843	-1,008
Accrued liabilities	3,894	-4,277
Deferred revenue	27,484	19,358
Other long-term liabilities	5	333
Net cash provided by operating activities	39,978	24,373
Cash flows from investing activities
Purchases of marketable securities	-19,996	-4,985
Proceeds from sale or disposal of marketable securities	20,000	5,000
Purchases of property and equipment	-3,901	-1,780
Intangible asset additions	-1,018	-506
Cash paid for acquisition, net of cash acquired		-7,434
Increase in restricted cash and deposits	-50
Net cash used in investing activities	-4,965	-9,705
Cash flows from financing activities
Proceeds from issuance of common stock upon option exercises	8,850	5,773
Common stock withheld to satisfy income tax withholdings for restricted stock unit vesting	-1,642	-901
Payment of debt issuance costs	-676
Payment of contingent consideration	-226
Purchase of treasury stock	-5,064	-4,909
Net cash (used in) provided by financing activities	1,242	-37
Effect of exchange rate changes on cash and cash equivalents and restricted cash	-5,055	-152
Net increase in cash and cash equivalents	31,200	14,479
Cash and cash equivalents, beginning of period	100,960	89,257
Cash and cash equivalents, end of period	132,160	103,736
Supplemental disclosure of cash flow information
Cash paid for interest	1	1
Cash paid for income taxes	1,015	119
Non-cash investing and financing activities
Purchases of property and equipment included in accounts payable and accrued liabilities	1,200	1,349
Debt issuance costs included in accounts payable and accrued liabilities	224
Fair value of contingent consideration in connection with acquisition included in other long-term liabilities	$25

Nature_of_the_Business

Nature of the Business	3 Months Ended
	Mar. 31, 2015
Accounting Policies [Abstract]
Nature of the Business	1. Nature of the Business
	LogMeIn, Inc. (the “Company”) provides a portfolio of cloud-based service offerings which make it possible for people and businesses to simply and securely connect to their workplace, colleagues and customers. The Company’s product line includes AppGuru™, BoldChat®, Cubby™, join.me®, LogMeIn Pro®, LogMeIn® Central™, LogMeIn Rescue®, LogMeIn® Rescue+Mobile™, LogMeIn Backup®, LogMeIn for iOS, LogMeIn Hamachi®, Meldium™, Xively™ and RemotelyAnywhere®. The Company is headquartered in Boston, Massachusetts with wholly-owned subsidiaries located in Hungary, The Netherlands, Australia, the United Kingdom, Brazil, Bermuda, Japan, Ireland, and India.

Summary_of_Significant_Account

Summary of Significant Accounting Policies	3 Months Ended
	Mar. 31, 2015
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	2. Summary of Significant Accounting Policies
	Principles of Consolidation — The accompanying condensed consolidated financial statements include the results of operations of the Company and its wholly-owned subsidiaries. All intercompany transactions and balances have been eliminated in consolidation. The Company has prepared the accompanying condensed consolidated financial statements in conformity with accounting principles generally accepted in the United States of America (“GAAP”).
	Unaudited Interim Condensed Consolidated Financial Statements — The accompanying condensed consolidated financial statements and the related interim information contained within the notes to the condensed consolidated financial statements are unaudited and have been prepared in accordance with GAAP and applicable rules and regulations of the Securities and Exchange Commission for interim financial information. Accordingly, they do not include all of the information and notes required by GAAP for complete financial statements. The accompanying unaudited condensed consolidated financial statements should be read along with the Company’s audited financial statements included in the Company’s Annual Report on Form 10-K, filed with the Securities and Exchange Commission on February 20, 2015. The unaudited interim condensed consolidated financial statements have been prepared on the same basis as the audited financial statements and in the opinion of management, reflect all adjustments, consisting of normal and recurring adjustments, necessary for the fair presentation of the Company’s financial position, results of operations and cash flows for the interim periods presented. The results for the interim periods presented are not necessarily indicative of future results. The Company considers events or transactions that occur after the balance sheet date but before the financial statements are issued to provide additional evidence relative to certain estimates or to identify matters that require additional disclosure.
	Use of Estimates — The preparation of 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 financial statements and the reported amounts of revenue and expenses during the reporting period. By their nature, estimates are subject to an inherent degree of uncertainty. Actual results could differ from those estimates.
	Marketable Securities — The Company’s marketable securities are classified as available-for-sale and are carried at fair value with the unrealized gains and losses, net of tax, reported as a component of accumulated other comprehensive loss in equity. Realized gains and losses and declines in value judged to be other than temporary are included as a component of earnings based on the specific identification method. Fair value is determined based on quoted market prices. At December 31, 2014 and March 31, 2015, marketable securities consisted of U.S. government agency securities and corporate bonds that have remaining maturities within two years and have an aggregate amortized cost of $100.3 million. The marketable securities have an aggregate fair value of $100.2 million and $100.3 million, including $9,000 and $59,000 of unrealized gains and $138,000 and $10,000 of unrealized losses, respectively.
	Revenue Recognition — The Company derives revenue primarily from subscription fees related to its LogMeIn premium services and, to a lesser extent, the delivery of professional services, primarily related to its Xively business.
	Revenue from the Company’s LogMeIn premium services is recognized on a daily basis over the subscription term as the services are delivered, provided that there is persuasive evidence of an arrangement, the fee is fixed or determinable and collectability is deemed reasonably assured. Subscription periods range from monthly to five years, but are generally one year in duration. The Company’s software cannot be run on another entity’s hardware nor do customers have the right to take possession of the software and use it on their own or another entity’s hardware.
	The Company’s multi-element arrangements typically include subscription and professional services, which may include development services. The Company evaluates each element within the arrangement to determine if they can be accounted for as separate units of accounting. If the delivered item or items have value to the customer on a standalone basis, either because they are sold separately by any vendor or the customer could resell the delivered item or items on a standalone basis, the Company has determined that the deliverables within these arrangements qualify for treatment as separate units of accounting. Accordingly, the Company recognizes revenue for each delivered item or items as a separate earnings process commencing when all of the significant performance obligations have been performed and when all of the revenue recognition criteria have been met. Professional services revenue recognized as a separate earnings process under multi-element arrangements has been immaterial to date. In cases where the Company has determined that the delivered items within its multi-element arrangements do not have value to the customer on a stand-alone basis, the arrangement is accounted for as a single unit of accounting and the related consideration is recognized ratably over the estimated customer life, commencing when all of the significant performance obligations have been delivered and when all of the revenue recognition criteria have been met.
	Revenues are reported net of applicable sales and use tax, value-added tax, and other transaction taxes imposed on the related transaction.
	Concentrations of Credit Risk and Significant Customers — The Company’s principal credit risk relates to its cash, cash equivalents, marketable securities, restricted cash, and accounts receivable. Cash, cash equivalents, and restricted cash are deposited primarily with financial institutions that management believes to be of high-credit quality and custody of its marketable securities is with an accredited financial institution. To manage accounts receivable credit risk, the Company regularly evaluates the creditworthiness of its customers and maintains allowances for potential credit losses. To date, losses resulting from uncollected receivables have not exceeded management’s expectations.
	As of December 31, 2014, one customer accounted for 15% of accounts receivable and there were no customers that represented 10% or more of revenue. For the three months ended March 31, 2014 and 2015, no customers accounted for more than 10% of revenue. As of March 31, 2015, one customer accounted for more than 10% of accounts receivable.
	Goodwill — Goodwill is the excess of the acquisition price over the fair value of the tangible and identifiable intangible net assets acquired. The Company does not amortize goodwill, but performs an impairment test of goodwill annually or whenever events and circumstances indicate that the carrying amount of goodwill may exceed its fair value. The Company operates as a single operating segment with one reporting unit and consequently evaluates goodwill for impairment based on an evaluation of the fair value of the Company as a whole. As of December 31, 2014, the fair value of the Company as a whole significantly exceeded the carrying amount of the Company. Through March 31, 2015, no impairments have occurred.
	Long-Lived Assets and Intangible Assets — The Company records intangible assets at their respective estimated fair values at the date of acquisition. Intangible assets are being amortized based upon the pattern in which their economic benefit will be realized, or if this pattern cannot be reliably determined, using the straight-line method over their estimated useful lives, which range from four months to eight years.
	The Company reviews long-lived assets for impairment whenever events or changes in circumstances indicate that the carrying amount of the assets, including intangible assets, may not be recoverable. When such events occur, the Company compares the carrying amounts of the assets to their undiscounted expected future cash flows. If this comparison indicates that there is impairment, the amount of the impairment is calculated as the difference between the carrying value and fair value. The Company did not record any impairments for the quarter ended March 31, 2015.
	Foreign Currency Translation — The functional currency of operations outside the United States of America is deemed to be the currency of the local country, unless otherwise determined that the United States dollar would serve as a more appropriate functional currency given the economic operations of the entity. Accordingly, the assets and liabilities of the Company’s foreign subsidiaries are translated into United States dollars using the period-end exchange rate, and income and expense items are translated using the average exchange rate during the period. Cumulative translation adjustments are reflected as a separate component of equity. Foreign currency transaction gains and losses are charged to operations. The Company had foreign currency losses of approximately $28,000 for the three months ended March 31, 2014, and foreign currency gains of approximately $1.3 million for the three months ended March 31, 2015 included in other (expense) income in the condensed consolidated statements of operations.
	Stock-Based Compensation — The Company values all stock-based compensation, including grants of stock options and restricted stock units, at fair value on the date of grant and recognizes the expense over the requisite service period, which is generally the vesting period of the award, for those awards expected to vest, on a straight-line basis. The Company uses the with-or-without method to determine when it will realize excess tax benefits from stock based compensation. Under this method, the Company will realize these excess tax benefits only after it realizes the tax benefits of net operating losses from operations.
	Income Taxes — Deferred income taxes are provided for the tax effects of temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and the amounts used for income tax purposes, and operating loss carry-forwards and credits using enacted tax rates expected to be in effect in the years in which the differences are expected to reverse. At each balance sheet date, the Company assesses the likelihood that deferred tax assets will be realized, and recognizes a valuation allowance if it is more likely than not that some portion of the deferred tax assets will not be realized. This assessment requires judgment as to the likelihood and amounts of future taxable income by tax jurisdiction.
	The Company evaluates its uncertain tax positions based on a determination of whether and how much of a tax benefit taken by the Company in its tax filings is more likely than not to be realized. Potential interest and penalties associated with any uncertain tax positions are recorded as a component of income tax expense. As of December 31, 2014 and March 31, 2015, the Company has provided a liability for approximately $652,000 and $738,000 for uncertain tax positions. These uncertain tax positions would impact the Company’s effective tax rate if recognized.
	Segment Data — Operating segments are identified as components of an enterprise about which separate discrete financial information is available for evaluation and reviewed regularly by the chief operating decision-maker, or decision making group, in making decisions regarding resource allocation and assessing performance. The Company, which uses consolidated financial information in determining how to allocate resources and assess performance, has determined that it operates in one segment.
	The Company’s revenue by geography (based on customer address) is as follows (in thousands):
		Three Months Ended March 31,
		2014		2015
	Revenue:
	United States	$	32,405	$	42,629
	United Kingdom		4,407		4,885
	International - all other		12,208		13,595
	Total revenue	$	49,020	$	61,109
	Guarantees and Indemnification Obligations — As permitted under Delaware law, the Company has agreements whereby the Company indemnifies certain of its officers and directors for certain events or occurrences while the officer or director is, or was, serving at the Company’s request in such capacity. The term of the indemnification period is for the officer’s or director’s lifetime. As permitted under Delaware law, the Company also has similar indemnification obligations under its certificate of incorporation and by-laws. The maximum potential amount of future payments the Company could be required to make under these indemnification agreements is unlimited; however, the Company has director’s and officer’s insurance coverage that the Company believes limits its exposure and enables it to recover a portion of any future amounts paid.
	The Company has entered into agreements with certain customers that contractually obligate the Company to indemnify the customer from certain claims, including claims alleging that the Company’s products infringe third-party patents, copyrights, or trademarks. The term of these indemnification obligations is generally perpetual. The maximum potential amount of future payments the Company could be required to make under these indemnification obligations is unlimited. Through March 31, 2015, the Company has not experienced any losses related to these indemnification obligations.
	Net Income Per Share — Basic net income per share is computed by dividing net income by the weighted average number of common shares outstanding for the period. Diluted net income per share is computed by dividing net income by the sum of the weighted average number of common shares outstanding during the period and the weighted average number of potential common shares outstanding from the assumed exercise of stock options and the vesting of restricted stock units.
	The Company excluded the following options to purchase common shares and restricted stock units from the computation of diluted net income per share because they had an anti-dilutive impact (in thousands):
		Three Months Ended March 31,
		2014		2015
	Options to purchase common shares		933		39
	Restricted stock units		173		—
	Total options and restricted stock units		1,106		39
	Basic and diluted net income per share was calculated as follows (in thousands, except share and per share data):
		Three Months Ended
		March 31, 2014
	Basic:
	Net income	$	1,004
	Weighted average common shares outstanding, basic		24,123,291
	Net income, basic	$	0.04
	Diluted:
	Net income	$	1,004
	Weighted average common shares outstanding, basic		24,123,291
	Add: Common stock equivalents		626,220
	Weighted average common shares outstanding, diluted		24,749,511
	Net income, diluted	$	0.04
		Three Months Ended
		March 31, 2015
	Basic:
	Net income	$	372
	Weighted average common shares outstanding, basic		24,626,872
	Net income, basic	$	0.02
	Diluted:
	Net income	$	372
	Weighted average common shares outstanding, basic		24,626,872
	Add: Common stock equivalents		930,312
	Weighted average common shares outstanding, diluted		25,557,184
	Net income, diluted	$	0.01
	Recently Issued Accounting Pronouncements — On May 28, 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers (“ASU 2014-09”), its final standard on revenue from contracts with customers. ASU 2014-9 outlines a single comprehensive model for entities to use in accounting for revenue arising from contracts with customers and supersedes most current revenue recognition guidance, including industry-specific guidance. The core principle of the revenue model is that an entity recognizes revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. In applying the revenue model to contracts within its scope, an entity identifies the contract(s) with a customer, identifies the performance obligations in the contract, determines the transaction price, allocates the transaction price to the performance obligations in the contract and recognizes revenue when (or as) the entity satisfies a performance obligation. ASU 2014-09 applies to all contracts with customers that are within the scope of other topics in the FASB Accounting Standards Codification. Certain of ASU 2014-09’s provisions also apply to transfers of nonfinancial assets, including in-substance nonfinancial assets that are not an output of an entity’s ordinary activities (i.e., property plant and equipment; real estate; or intangible assets). Existing accounting guidance applicable to these transfers has been amended or superseded. ASU 2014-09 also requires significantly expanded disclosures about revenue recognition. ASU 2014-09 is effective for the Company on January 1, 2017. The FASB voted on April 1, 2015 to propose a deferral of the effective date of the new revenue standard by one year. The FASB’s proposed deferral is not a final decision. The Company is currently assessing the potential impact of the adoption of ASU 2014-09 on its condensed consolidated financial statements.
	On June 19, 2014, the FASB issued ASU 2014-12, Stock Compensation (“ASU 2014-12”), providing guidance on accounting for share-based payment awards when the terms of an award provide that a performance target could be achieved after the requisite service period. The update clarifies that performance targets that can be achieved after the requisite service period of a share-based payment award be treated as performance conditions that affect vesting. These awards should be accounted for under Accounting Standards Codification Topic 718, Compensation — Stock Compensation, and existing guidance should be applied as it relates to awards with performance conditions that affect vesting. The update is effective for the Company for the interim and annual periods beginning after December 15, 2015. The Company is currently evaluating the impact of the adoption of this standard, if any, on its consolidated financial statements.
	On August 27, 2014, the FASB issued ASU 2014-15, Presentation of Financial Statements — Going Concern: Disclosure of Uncertainties about an Entity’s Ability to Continue as a Going Concern (“ASU 2014-15”). The standard requires that the Company evaluates, at each interim and annual reporting period, whether there are conditions or events that raise substantial doubt about its ability to continue as a going concern within one year after the date the financial statements are issued, and provide related disclosures. ASU 2014-15 is effective for annual periods ending after December 15, 2016, and for annual and interim periods thereafter, and early adoption is permitted. The Company does not expect to early adopt ASU 2014-15, which will be effective for its fiscal year ending December 31, 2016. The Company does not believe the standard will have a material impact on its consolidated financial statements.
On January 9, 2015, the FASB issued ASU 2015-01, Simplifying Income Statement Presentation by Eliminating the Concept of Extraordinary Items (“ASU 2015-01”). The standard eliminates the requirement of Extraordinary Items to be separately classified on the income statement. ASU 2015-01 is effective for annual periods ending after December 15, 2015, and for annual and interim periods thereafter, and early adoption is permitted. The Company does not expect to early adopt ASU 2015-01, which will be effective for its fiscal year ending December 31, 2016. The Company does not believe the standard will have a material impact on its consolidated financial statements.
On February 18, 2015, the FASB issued ASU 2015-02, Consolidation: Amendments to the Consolidation Analysis (“ASU 2015-02”). The standard amends the consolidation requirements in ASC 810. ASU 2015-02 is effective for fiscal periods beginning after December 15, 2015 for public companies, and early adoption is permitted. The Company does not expect to early adopt ASU 2015-02, which will be effective for its fiscal year ending December 31, 2016. The Company does not believe the standard will have a material impact on its consolidated financial statements.
On April 7, 2015, the FASB issued ASU 2015-03, Interest- Imputation of Interest: Simplifying the Presentation of Debt Issuance Costs (“ASU 2015-03”). The standard requires an entity to present debt issuance costs on the balance sheets as a direct deduction from the related debt liability rather than as an asset, and the amortization is reported as interest expense. ASU 2015-03 is effective for fiscal periods beginning after December 15, 2015, and interim periods beginning after December 15, 2016. Early adoption is permitted for entities for financial statements that have not been previously issued. The Company does not expect to early adopt ASU 2015-03, which will be effective for its fiscal year ending December 31, 2016. The Company does not believe the standard will have a material impact on its consolidated financial statements.
On April 15, 2015, the FASB issued ASU 2015-05, Intangibles—Goodwill and Other—Internal-Use Software: Customer’s Accounting for Fees Paid in a Cloud Computing Arrangement (“ASU 2015-05”). The standard clarifies the circumstances under which a cloud computing customer would account for the arrangement as a license of internal-use software under ASC 350-40. ASU 2015-05 is effective for annual periods (and interim periods therein) beginning after December 15, 2015, and interim and annual periods beginning after December 15, 2016, and early adoption is permitted. The Company does not expect to early adopt ASU 2015-05, which will be effective for its fiscal year ending December 31, 2016. The Company does not believe the standard will have a material impact on its consolidated financial statements.

Fair_Value_of_Financial_Instru

Fair Value of Financial Instruments	3 Months Ended
	Mar. 31, 2015
Fair Value Disclosures [Abstract]
Fair Value of Financial Instruments	3. Fair Value of Financial Instruments
	The carrying value of the Company’s financial instruments, including cash equivalents, restricted cash, accounts receivable, and accounts payable, approximate their fair values due to their short maturities. The Company’s financial assets and liabilities are measured using inputs from the three levels of the fair value hierarchy. A financial asset or liability’s classification within the hierarchy is determined based on the lowest level input that is significant to the fair value measurement. The three levels are as follows:
	Level 1: Unadjusted quoted prices for identical assets or liabilities in active markets accessible by the Company at the measurement date.
	Level 2: Inputs include quoted prices for similar assets and liabilities in active markets, quoted prices for identical or similar assets and liabilities in markets that are not active, inputs other than quoted prices that are observable for the asset or liability, and inputs that are derived principally from or corroborated by observable market data by correlation or other means.
	Level 3: Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities.
	The following table summarizes the basis used to measure certain of the Company’s financial assets that are carried at fair value (in thousands):
		Fair Value Measurements at December 31, 2014 Using
		Level 1			Level 2		Level 3		Total
	Financial Assets:
	Cash equivalents — money market funds	$	13,139		$	—	$	—	$	13,139
	Cash equivalents — bank deposits		—			5,003		—		5,003
	Short-term marketable securities —
	U.S. government agency securities		59,903			19,950		—		79,853
	Corporate bond securities		—			20,356		—		20,356
	Contingent consideration liability		—			—		249		249
	Total	$	73,042		$	45,309	$	249	$	118,600
		Fair Value Measurements at March 31, 2015 Using
		Level 1			Level 2		Level 3		Total
	Financial Assets:
	Cash equivalents — money market funds	$	17,523		$	—	$	—	$	17,523
	Cash equivalents — bank deposits		—			5,003		—		5,003
	Short-term marketable securities —
	U.S. government agency securities		50,022			29,987		—		80,009
	Corporate bond securities		—			20,312		—		20,312
	Contingent consideration liability		—			—		25		25
	Total	$	67,545		$	55,302	$	25	$	122,872
	Bank deposits, corporate bonds, and certain U.S. government agency securities are classified within the second level of the fair value hierarchy as the fair value of those assets are determined based upon quoted prices for similar assets.
	The Level 3 liability consists of contingent consideration related to the August 27, 2014 acquisition of Meldium and the September 5, 2014 acquisition of a San Francisco-based collaboration software provider, each described in Note 4 below. The fair value of the contingent consideration was estimated by applying a probability based model, which utilizes significant inputs that are unobservable in the market. Key assumptions include a 12% discount rate and an assumption that the earn-out will be achieved. The current portion of contingent consideration is included in Accrued liabilities and the non-current portion is included in Other long-term liabilities. A reconciliation of the beginning and ending Level 3 liability is as follows:
		Three months ended
		March 31,
		2015
	Balance beginning of period	$	249
	Additions to Level 3		—
	Payments		(226	)
	Change in fair value of contingent consideration liability		2
	Balance end of period	$	25

Acquisitions

Acquisitions	3 Months Ended
	Mar. 31, 2015
Business Combinations [Abstract]
Acquisitions	4. Acquisitions
	On March 7, 2014, the Company acquired all of the outstanding capital stock of Ionia Corporation, or Ionia, a Boston, Massachusetts based systems integrator, for a cash purchase price of $7.5 million plus contingent retention-based bonuses totaling up to $4.0 million, which are expected to be paid over a two-year period from the date of acquisition. The Company paid $2.0 million in March 2015 and expects to pay the remainder in March 2016. The operating results, of which there was approximately $221,000 of revenue and $471,000 of expenses during the three months ended March 31, 2014, are included in the condensed consolidated financial statements beginning on the acquisition date.
	The acquisition has been accounted for as a business combination. The assets acquired and the liabilities assumed were recorded at their estimated fair values as of the acquisition date. The Company retained an independent third party valuation firm to assist in the determination of the fair value of the intangible assets with estimates and assumptions provided by Company management. The excess of the purchase price over the tangible net assets and identifiable intangible assets was recorded as goodwill.
	The purchase price was allocated as follows (in thousands):
		Amount
	Cash	$	67
	Current assets		296
	Other assets		26
	Deferred revenue		(70	)
	Other liabilities		(864	)
	Customer backlog		120
	Trade name and trademark		10
	Customer relationships		1,340
	Documented know-how		280
	Goodwill		6,295
	Total purchase price	$	7,500
	The pro forma results of operations for the quarter ended March 31, 2014, assuming the Company had acquired Ionia on January 1, 2014, do not differ materially from those reported in the Company’s condensed consolidated statement of income for that quarter.
	The stock purchase agreement included a contingent, retention-based bonus program provision requiring the Company to make additional payments to employees, including former Ionia stockholders now employed by the Company, on the first and second anniversaries of the acquisition, contingent upon their continued employment and achievement of certain bookings goals. The range of the contingent, retention-based bonus payments that the Company could pay is between $0 to $4.0 million. The Company has concluded that the arrangement is a compensation arrangement and is accruing the maximum payout ratably over the performance period, as it believes it is probable that the criteria will be met.
	The goodwill recorded in connection with this transaction is primarily related to the expected synergies to be achieved related to the Company’s ability to leverage its Xively platform, customer base, sales force and Internet of Things business plan with Ionia’s technical expertise and customer base. All goodwill and intangible assets acquired are not deductible for income tax purposes.
	The Company recorded a long-term deferred tax liability of approximately $700,000 related to the amortization of intangible assets which cannot be deducted for tax purposes and is included in the accompanying table above as Other liabilities.
	On August 27, 2014, the Company acquired BBA, Inc., d/b/a Meldium, a San Francisco, California-based provider of single sign-on password management software, through a merger transaction for a cash purchase price of $10.6 million plus contingent bonuses totaling up to $4.6 million, which are expected to be paid over a two-year period from the date of acquisition. The Company paid approximately $1.0 million of contingent payments during the three months ended March 31, 2015.
	The acquisition has been accounted for as a business combination. The assets acquired and the liabilities assumed were recorded at their estimated fair values as of the acquisition date. The Company retained an independent third party valuation firm to assist in the determination of the fair value of the intangible assets with estimates and assumptions provided by Company management. The excess of the purchase price over the tangible net assets and identifiable intangible assets was recorded as goodwill.
	The following table summarizes the fair value (in thousands) of the assets acquired and liabilities assumed at the date of acquisition:
		Amount
	Cash	$	120
	Current assets		90
	Other assets		436
	Deferred revenue		(5	)
	Other liabilities		(935	)
	Completed technology		1,580
	Trade name and trademark		30
	Customer relationships		100
	Goodwill		9,437
	Total purchase price		10,853
	Liability for contingent consideration		(216	)
	Cash paid	$	10,637
	The merger agreement included a contingent, retention-based bonus program requiring the Company to make additional payments to employees, including former Meldium stockholders now employed by the Company, in the first quarter of 2015 and on the first and second anniversaries of the date of acquisition, contingent upon their continued employment and achievement of certain product integration goals. The range of the contingent, retention-based bonus payments that the Company could pay is between $0 to $4.3 million. The Company has concluded that the arrangement is a compensation arrangement and is accruing the maximum payout ratably over the performance period, as it believes it is probable that the criteria will be met. The contingent bonus program also includes payments to non-employee stockholders for an amount between $0 and $226,000, which the Company has concluded is contingent consideration and is part of the purchase price. This contingent liability was recorded at its fair value of $216,000 at the acquisition date. The Company re-measured the fair value of the contingent consideration at each subsequent reporting period and recognized any adjustments to fair value as part of earnings.
	The goodwill recorded in connection with this transaction is primarily related to the expected synergies to be achieved related to the Company’s ability to leverage its IT management offerings, customer base, sales force and IT management business plan with Meldium’s product, technical expertise and customer base. All goodwill and intangible assets acquired are not deductible for income tax purposes.
	The Company recorded both a current and a long-term deferred tax asset of approximately $88,000 and $433,000, respectively, primarily related to net operating losses that were acquired as a part of the acquisition and are shown in the accompanying table above as Current assets and Other assets, respectively. The Company also recorded a long-term deferred tax liability of approximately $694,000 related to the amortization of intangible assets which cannot be deducted for tax purposes and are included in the accompanying table above as Other liabilities.
	On September 5, 2014, the Company acquired all of the outstanding capital stock of a San Francisco, California-based collaboration software provider, for a cash purchase price of $4.5 million plus contingent bonuses totaling up to $1.5 million, which are expected to be paid two years from the date of acquisition.
	This acquisition has been accounted for as a business combination. The assets acquired and the liabilities assumed were recorded at their estimated fair values as of the acquisition date. The Company retained an independent third party valuation firm to assist in the determination of the fair value of the intangible assets with estimates and assumptions provided by Company management. The excess of the purchase price over the tangible net assets and identifiable intangible assets was recorded as goodwill.
	The following table summarizes the fair value (in thousands) of the assets acquired and liabilities assumed at the date of acquisition:
		Amount
	Cash	$	2
	Current assets		13
	Other assets		404
	Other liabilities		(439	)
	Completed technology		960
	Trade name and trademark		100
	Goodwill		3,484
	Total purchase price		4,524
	Liability for contingent consideration		(24	)
	Cash paid	$	4,500
	The stock purchase agreement included a contingent, retention-based bonus program provision requiring the Company to make additional payments to employees, including former stockholders now employed by the Company, on the second anniversary of the acquisition, contingent upon their continued employment and achievement of certain product integration goals. The range of the contingent, retention-based bonus payments that the Company could pay is between $0 to $1.5 million. The Company has concluded that the arrangement is a compensation arrangement and is accruing the maximum payout ratably over the performance period, as it believes it is probable that the criteria will be met. The contingent bonus program also includes payments to non-employee stockholders for an amount between $0 and $30,000, which the Company has concluded is contingent consideration and is part of the purchase price. This contingent liability was recorded at its fair value of $24,000 at the acquisition date. The Company continues to re-measure the fair value of the contingent consideration at each subsequent reporting period and recognizes any adjustments to fair value as part of earnings.
	The goodwill recorded in connection with this transaction is primarily related to the expected synergies to be achieved related to the Company’s ability to leverage its join.me product, customer base, sales force and join.me business plan with the collaboration software provider’s product, technical expertise and customer base. All goodwill and intangible assets acquired are not deductible for income tax purposes.
	The Company recorded a long-term deferred tax asset of approximately $402,000 related to net operating losses that were acquired as a part of the acquisition, which is included in the accompanying table above as Other assets. The Company also recorded a long-term deferred tax liability of approximately $430,000 related to the amortization of intangible assets which cannot be deducted for tax purposes and is included in the accompanying table above as Other liabilities.
	The Company incurred approximately $100,000 of acquisition-related costs which are included in general and administrative expense for the three months ended March 31, 2014.

Goodwill_and_Intangible_Assets

Goodwill and Intangible Assets	3 Months Ended
	Mar. 31, 2015
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets	5. Goodwill and Intangible Assets
	There was no change in the carrying amount of goodwill for the three months ended March 31, 2015.
	Intangible assets consist of the following (in thousands):
				December 31, 2014						March 31, 2015
		Estimated		Gross		Accumulated		Net		Gross		Accumulated		Net Carrying
		Useful Life		Carrying		Amortization		Carrying		Carrying		Amortization		Amount
				Amount				Amount		Amount
	Trade names and trademarks		1-5 years	$	806	$	682	$	124	$	806	$	713	$	93
	Customer relationships		5-8 years		5,229		2,546		2,683		5,229		2,737		2,492
	Customer backlog		4 months		120		120		—		120		120		—
	Domain names		5 years		907		507		400		904		547		357
	Software		4 years		299		299		—		299		299		—
	Completed technology		3-8 years		16,903		3,981		12,922		16,903		4,673		12,230
	Technology and know-how		3 years		3,176		3,176		—		3,176		3,176		—
	Documented know-how		4 years		280		57		223		280		75		205
	Non-Compete agreements		5 years		162		71		91		162		82		80
	Internally developed software		3 years		4,591		2,051		2,540		5,609		2,264		3,345
				$	32,473	$	13,490	$	18,983	$	33,488	$	14,686	$	18,802
	As a result of the acquisition of Ionia, the Company capitalized $120,000 of customer backlog, $280,000 of documented know-how, $10,000 of trade name and trademark, and $1.3 million of customer relationships as intangible assets. As a result of the acquisition of Meldium, the Company capitalized $1.6 million of completed technology, $30,000 of trade name and trademark, and $100,000 of customer relationships. As a result of the acquisition of the San Francisco-based collaboration software provider, the Company capitalized $960,000 of completed technology and $100,000 of trade name and trademark. Changes in the gross carrying amount of domain names are due to foreign currency translation adjustments. The Company is amortizing the intangible assets based upon the pattern in which their economic benefit will be realized, or if this pattern cannot be reliably determined, using the straight-line method over their estimated useful lives. The intangible assets have estimated useful lives which range from four months to eight years.
	On November 6, 2013, the Company purchased a software asset for $11.5 million which is classified as technology. During 2014, the Company incurred an additional $500,000 to develop this technology. The technology will be incorporated into certain Company products, and is being amortized straight-line over its estimated useful life of 5 years.
	The Company capitalized $491,000 and $1.0 million during the three months ended March 31, 2014 and 2015, respectively, of costs related to internally developed computer software to be sold as a service incurred during the application development stage and is amortizing these costs over the expected lives of the related services.
	The Company is amortizing its intangible assets over the estimated lives noted above. Amortization expense for intangible assets was $1.0 million and $1.2 million for the three months ended March 31, 2014 and 2015, respectively. Amortization relating to software, technology and know-how, documented know-how, and internally developed software is recorded within cost of revenues and the amortization of trade name and trademark, customer base, customer backlog, domain names, and non-compete agreements is recorded within operating expenses. Future estimated amortization expense for intangible assets is as follows at March 31, 2015 (in thousands):
	Amortization Expense (Years Ending December 31)	Amount
	2015 (Nine months ending December 31)		4,003
	2016		4,948
	2017		4,607
	2018		3,612
	2019		1,096
	Thereafter		536
	Total	$	18,802

Accrued_Liabilities

Accrued Liabilities	3 Months Ended
	Mar. 31, 2015
Payables and Accruals [Abstract]
Accrued Liabilities	6. Accrued Liabilities
	Accrued liabilities consisted of the following (in thousands):
		December 31,		March 31,
		2014		2015
	Marketing programs	$	7,626	$	7,031
	Payroll and payroll related		14,873		8,335
	Professional fees		1,961		2,566
	Legal settlements		—		8,300
	Other accrued liabilities		5,022		7,277
	Total accrued liabilities	$	29,482	$	33,509

Income_Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2015
Income Tax Disclosure [Abstract]
Income Taxes	7. Income Taxes
	The Company recorded a provision for federal, state and foreign income taxes of approximately $677,000 and $63,000 for the three months ended March 31, 2014 and 2015, respectively. The decrease in the tax provision recorded for the three months ended March 31, 2015 is primarily due to a decrease in pre-tax income as compared to the three months ended March 31, 2014. Our effective income tax rates were approximately 40% and 15% for the three months ended March 31, 2014 and 2015, respectively. The effective tax rate decreased due to an increase in forecasted pre-tax income in foreign jurisdictions, primarily our Irish subsidiaries, which have lower statutory tax rates than the 35% U.S. statutory rate.
	Deferred income taxes are provided for the tax effects of temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and the amounts used for income tax purposes, and operating loss carry-forwards and credits using enacted tax rates expected to be in effect in the years in which the differences are expected to reverse. At each balance sheet date, the Company assesses the likelihood that deferred tax assets will be realized, and recognizes a valuation allowance if it is more likely than not that some portion of the deferred tax assets will not be realized. This assessment requires judgment as to the likelihood and amounts of future taxable income by tax jurisdiction.
	The Company files income tax returns in the U.S. federal jurisdiction and various state and foreign jurisdictions. The Company’s income tax returns from 2007 are open to examination by federal, state, and foreign tax authorities. The Company has recorded a liability related to uncertain tax positions of approximately $652,000 and $738,000 as of December 31, 2014 and March 31, 2015, respectively. The Company’s policy is to record estimated interest and penalties related to the underpayment of income taxes or unrecognized tax benefits as a component of its income tax provision. The Company recognized approximately $1,000 and $2,000 of interest expense for the three months ended March 31, 2014 and March 31, 2015, respectively.

Common_Stock_and_Equity

Common Stock and Equity	3 Months Ended
	Mar. 31, 2015
Equity [Abstract]
Common Stock and Equity	8. Common Stock and Equity
	In February 2013, the Company’s board of directors approved a $25 million share repurchase program. On August 13, 2013, the board of directors approved a new $50 million share repurchase program, which replaced the previous $25 million share repurchase program. On October 20, 2014, the Board of Directors approved a new $75 million share repurchase program. This new share repurchase program is in addition to the Company’s existing $50 million share repurchase program. Share repurchases are made from time-to-time in the open market, in privately negotiated transactions or otherwise, in accordance with applicable securities laws and regulations. The timing and amount of any share repurchases are determined by the Company’s management based on its evaluation of market conditions, the trading price of the stock, regulatory requirements and other factors. The share repurchase program may be suspended, modified or discontinued at any time at the Company’s discretion without prior notice.
	For the three months ended March 31, 2014 and 2015, the Company repurchased 148,500 and 93,400 shares of its common stock at an average price of $33.05 and $54.22 per share for a total cost of approximately $4.9 million and $5.1 million, respectively. At March 31, 2015, approximately $69.4 million remained available under the Company’s share repurchase program.

Stock_Incentive_Plan

Stock Incentive Plan	3 Months Ended
	Mar. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock Incentive Plan	9. Stock Incentive Plan
	The Company’s 2009 Stock Incentive Plan (“2009 Plan”) is administered by the Board of Directors and Compensation Committee, which have the authority to designate participants and determine the number and type of awards to be granted and any other terms or conditions of the awards. Options generally vest over a four-year period and expire ten years from the date of grant. Restricted stock units with service-based vesting conditions generally vest over a three-year period while restricted stock units with market-based vesting conditions generally vest over two or three-year periods. Certain stock-based awards provide for accelerated vesting if there is a change in control. On May 22, 2014, the Company’s stockholders approved an amendment to the 2009 Plan that increased the shares available to grant under the plan by 1,200,000 shares. As of March 31, 2015, there were 2,108,371 shares available for grant under the 2009 Plan.
	The Company uses the Black-Scholes option-pricing model to estimate the grant date fair value of stock options. The Company estimates the expected volatility of its common stock at the date of grant based on the historical volatility of comparable public companies over the option’s expected term as well as its own stock price volatility since the Company’s IPO. The Company estimates expected term based on historical exercise activity and giving consideration to the contractual term of the options, vesting schedules, employee turnover, and expectation of employee exercise behavior. The assumed dividend yield is based upon the Company’s expectation of not paying dividends in the foreseeable future. The risk-free rate for periods within the estimated life of the stock option is based on the U.S. Treasury yield curve in effect at the time of grant. Historical employee turnover data is used to estimate pre-vesting stock option forfeiture rates. The compensation expense is amortized on a straight-line basis over the requisite service period of the stock option, which is generally four years.
	The Company used the following assumptions to apply the Black-Scholes option-pricing model:
			Three Months Ended March 31,
			2014			2015(1)
	Expected dividend yield			0	%		—	%
	Risk-free interest rate			1.48	%		—	%
	Expected option life (years)			6.25			—
	Expected volatility			55	%		—	%
	-1	There were no stock options granted during the three months ended March 31, 2015.
	The following table summarizes stock option activity, including performance-based options (shares and intrinsic value in thousands):
			Number			Weighted			Weighted		Aggregate
			of shares			Average			Average		Intrinsic Value
						Exercise			Remaining
						Price			Contractual
									Term (Years)
	Outstanding at January 1, 2015			1,407		$	30.02			6.2	$	27,186
	Granted			—			—
	Exercised			(261	)		33.93				$	5,023
	Forfeited			(12	)		38.75
	Outstanding at March 31, 2015			1,134		$	29.02			6	$	30,576
	Exercisable at December 31, 2014			957		$	28.24			5.7	$	20,190
	Exercisable at March 31, 2015			874		$	28.62			5.5	$	23,919
	The aggregate intrinsic value was calculated based on the positive differences between the fair value of the Company’s common stock of $49.34 per share on December 31, 2014 and $55.99 per share on March 31, 2015, or at time of exercise, and the exercise price of the options.
	The weighted average grant date fair value of stock options issued was $21.78 per share for the year ended December 31, 2014. There were no stock options granted during the three months ended March 31, 2015.
	During the three months ended March 31, 2015, the Company granted 242,126 restricted stock units, which contained time-based vesting conditions. Restricted stock units with time-based vesting conditions are valued on the grant date using the grant date closing price of the underlying shares. The Company recognizes the expense on a straight-line basis over the requisite service period of the restricted stock unit, which is generally three years.
	In August 2013 and May 2014, the Company granted 74,000 and 71,000 restricted stock units with market-based vesting conditions, respectively, which were tied to the Company’s achievement of a relative total shareholder return target measured over an applicable performance period which ranges from two to three years (the “TSR Units”). The number of shares underlying these TSR Units that will vest upon the conclusion of the applicable performance periods can range from 0% of the shares awarded to 200% of the shares awarded, or up to 148,000 shares and 142,000 shares for the August 2013 grant and May 2014 grant, respectively. Vesting of such shares is also contingent upon the continued employment of the participant throughout the vesting period. All TSR Units granted by the Company are valued using a Monte Carlo simulation model. The number of awards expected to be earned is factored into the grant date Monte Carlo valuation for the TSR Unit. Compensation cost is recognized regardless of the actual number of awards that are earned based on the market condition. Expected volatility is based on the Company’s historical volatility. The risk-free interest rate is based upon U.S. Treasury securities with a term similar to the vesting term of the TSR Units.
	The assumptions used in the Monte Carlo simulation model include (but are not limited to) the following:
			August 2013 Grant			May 2014 Grant
	Risk-free interest rate			0.62	%		0.78	%
	Volatility			54	%		54	%
	Compensation cost is recognized on a straight-line basis over the requisite service period. In the three months ended March 31, 2015, 20,000 shares from the August 2013 grant and 25,000 shares from the May 2014 grant were forfeited. At March 31, 2015, 54,000 and 46,000 shares of the TSR Units granted in August 2013 and May 2014 remain outstanding, respectively.
	The following table summarizes restricted stock unit activity, including performance-based restricted stock units (shares in thousands):
			Number of shares			Weighted Average
			Underlying Restricted			Grant Date Fair
			Stock Units			Value
	Unvested as of January 1, 2015			1,279		$	37.42
	Restricted stock units granted			242			48.69
	Restricted stock units vested			(112	)		33.47
	Restricted stock units forfeited			(138	)		42.36
	Unvested as of March 31, 2015			1,271		$	39.38
	The Company recognized stock based compensation expense within the accompanying condensed consolidated statements of operations as summarized in the following table (in thousands):
			Three Months Ended March 31,
			2014			2015
	Cost of revenue		$	235		$	354
	Research and development			776			1,328
	Sales and marketing			2,061			2,030
	General and administrative			2,366			1,141
			$	5,438		$	4,853
	As of March 31, 2015, there was approximately $36.8 million of total unrecognized share-based compensation cost, net of estimated forfeitures, related to unvested stock awards which are expected to be recognized over a weighted average period of 2.0 years. The total unrecognized share-based compensation cost will be adjusted for future changes in estimated forfeitures.

Commitments_and_Contingencies

Commitments and Contingencies	3 Months Ended
	Mar. 31, 2015
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	10. Commitments and Contingencies
	Operating Leases — The Company has operating lease agreements for offices in the United States, Hungary, Australia, the United Kingdom, Ireland and India that expire through 2028.
	In March 2015, the Company entered into a lease for new office space in Bangalore, India. The term of the new office space begins in March 2015 and extends through April 2020. The aggregate amount of minimum lease payments to be made over the term of the lease is approximately $569,000 (INR 35.6 million). The lease required a security deposit of approximately $48,500 (INR 3.0 million). The security deposit is classified as a long-term deposit.
	In December 2014, the Company entered into a lease for new office space in Boston, Massachusetts. The landlord is obligated to rehabilitate the existing building and the Company expects that the lease term will begin in November 2015 and extend through April 2028. The aggregate amount of minimum lease payments to be made over the term of the lease is approximately $47.0 million. Pursuant to the terms of the lease, the landlord is responsible for making certain improvements to the leased space up to an agreed upon cost to the landlord. Any excess costs for these improvements will be billed by the landlord to the Company as additional rent. The Company estimates these excess costs to be approximately $7.0 million. The lease required a security deposit of approximately $3.3 million in the form of an irrevocable, unsecured standby letter of credit. The lease includes an option to extend the original term of the lease for two successive five year periods.
	In December 2014, the Company entered into a lease for new office space in San Francisco, California. The term of the new office space began in February 2015 and extends through December 2019. The aggregate amount of minimum lease payments to be made over the term of the lease is approximately $2.4 million. The lease required a security deposit of approximately $41,000. The security deposit is classified as a long-term deposit.
	Rent expense under all leases was approximately $1.7 million and $1.9 million for the three months ended March 31, 2014 and 2015, respectively. The Company records rent expense on a straight-line basis for leases with scheduled escalation clauses or free rent periods.
	The Company also enters into hosting services agreements with third-party data centers and internet service providers that are subject to annual renewal. Hosting fees incurred under these arrangements aggregated approximately $1.1 million and $1.5 million for the three months ended March 31, 2014 and 2015, respectively.
	Future minimum lease payments under non-cancelable operating leases including one year commitments associated with the Company’s hosting services arrangements are approximately as follows at March 31, 2015 (in thousands):
	Years Ending December 31
	2015 (Nine months ending December 31)	$	7,893
	2016		9,945
	2017		10,291
	2018		10,324
	2019		9,786
	Thereafter		53,128
	Total minimum lease payments	$	101,367
	Litigation — The Company routinely assesses its current litigation and/or 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.
	On August 26, 2014, Sensory Technologies, LLC, or Sensory, filed a complaint against the Company in the U.S. District Court for the Southern District of Indiana (Case No. 1:14-cv-1406). The complaint alleged, among other things, that the Company infringed upon Sensory’s JOIN® trademark, which was registered to Sensory under U.S. Trademark Registration No. 3622883. The complaint sought damages in an unspecified amount and injunctive relief. On April 24, 2015, the Company entered into a Settlement Agreement with Sensory, whereby Sensory agreed to assign the JOIN® trademark to the Company and the parties agreed to mutually release each other from any and all claims related to the case. In connection with the Settlement Agreement, the Company agreed to pay Sensory a one-time fee of $8.3 million, approximately $4.7 million of which is expected to be reimbursed by the Company’s insurance provider. The Company believes that the JOIN® trademark has de minimis value and therefore has expensed $3.6 million in the accompanying financial statements as legal settlement expense. As a result of the Settlement Agreement, on April 27, 2015, the parties filed a joint motion with the U.S. District Court for the Southern District of Indiana and the case was dismissed with prejudice.
	On August 28, 2014, a putative class action complaint was filed against the Company in the U.S. District Court for the Eastern District of California (Case No. 1:14-cv-01355) by an individual on behalf of himself and on behalf of all other similarly situated individuals, or collectively, the Plaintiffs. After the Company filed a motion to dismiss the complaint on January 30, 2015, the Plaintiffs filed an amended complaint on February 17, 2015. The amended complaint includes claims made under California’s False Advertising Act and Unfair Competition Law and relates to the Company’s sale of its Ignition for iOS application, or the App, and the Plaintiffs’ continued use of the App. The Plaintiffs’ complaint seeks restitution, damages in an unspecified amount, attorney’s fees and costs, and unspecified equitable and injunctive relief. The Company believes it has meritorious defenses to the claims and intends to defend the lawsuit vigorously. Given the inherent unpredictability of litigation and the fact that this litigation is still in its early stages, the Company is unable to predict the outcome of this litigation or reasonably estimate a possible loss or range of loss associated with this litigation at this time.
	The Company is from time to time subject to various other legal proceedings and claims, either asserted or unasserted, which arise in the ordinary course of business. While the outcome of these other claims cannot be predicted with certainty, management does not believe that the outcome of any of these other legal matters will have a material adverse effect on the Company’s consolidated financial statements.

Accumulated_Other_Comprehensiv

Accumulated Other Comprehensive Loss	3 Months Ended
	Mar. 31, 2015
Equity [Abstract]
Accumulated Other Comprehensive Loss	11. Accumulated Other Comprehensive Loss
	The changes in accumulated other comprehensive income for the three months ended March 31, 2015 consisted of the following (in thousands):
		Unrealized Gain (Loss) on			Foreign Currency			Total
		Marketable Securities			Translation Adjustment
	Balance at December 31, 2014	$	(82	)	$	(3,035	)	$	(3,117	)
	Other comprehensive income (loss)		114			(1,532	)		(1,418	)
	Balance at March 31, 2015	$	32		$	(4,567	)	$	(4,535	)
	There were no material reclassifications as of March 31, 2015.

Credit_Facility

Credit Facility	3 Months Ended
	Mar. 31, 2015
Debt Disclosure [Abstract]
Credit Facility	12. Credit Facility
	On February 18, 2015, the Company entered into a multi-currency credit agreement with a syndicate of banks, financial institutions and other lending entities (the “Credit Facility”), pursuant to which a secured revolving credit facility up to $100 million in the aggregate, which may be made available in U.S. Dollars and certain other freely traded currencies, shall be available to the Company. The Credit Facility may be increased by up to an additional $50 million if the existing or additional lenders are willing to make such increased commitments. The Credit Facility shall be available to the Company on a revolving basis during the period commencing on February 18, 2015 through February 18, 2020. The Company may prepay the loans or terminate or reduce the commitments in whole or in part at any time, without premium or penalty, subject to certain conditions and costs in the case of Eurodollar rate loans. The Company and its subsidiaries expect to use the Credit Facility for general corporate purposes, including, but not limited to, the potential acquisition of complementary products or businesses, share repurchases, as well as for working capital.
	The currencies that are currently available for borrowing under the Credit Facility are U.S Dollars, Euros, and British Pound Sterling. Additional currencies may be added with the approval of all lenders under the Credit Facility. The maximum amount of borrowings in currencies other than U.S. Dollars is $20 million. Interest rates for U.S. Dollar loans under the Credit Facility are determined, at the option of the Company, by reference to a Eurodollar rate or a base rate, and range from 1.50% to 2.00% above the Eurodollar rate for Eurodollar-based borrowings or from 0.50% to 1.00% above the defined base rate for base rate borrowings, in each case based upon the Company’s total leverage ratio. Interest rates for loans in currencies other than U.S. Dollars range from 1.50% to 2.00% above the respective London interbank offered interest rates for those currencies, also based on the Company’s total leverage ratio. The quarterly commitment fee on the undrawn portion of the Credit Facility ranges from 0.20% to 0.30% per annum, based upon the Company’s total leverage ratio.
	The Credit Facility contains customary affirmative and negative covenants, including covenants that limit or restrict the Company and its subsidiaries’ ability to, among other things, incur indebtedness, grant liens, merge or consolidate, dispose of assets, change the nature of its business, make investments and acquisitions, pay dividends or make distributions, or enter into certain transactions with affiliates, in each case subject to customary and other exceptions for a credit facility of this size and type, each as further described in the Credit Facility. The Credit Facility also imposes limits on capital expenditures of the Company and its subsidiaries and requires the Company to maintain a maximum total leverage ratio and a minimum interest coverage ratio, each as further defined in the Credit Facility.
	As of March 31, 2015, no amounts had been drawn against the Credit Facility.

Summary_of_Significant_Account1

Summary of Significant Accounting Policies (Policies)	3 Months Ended
	Mar. 31, 2015
Accounting Policies [Abstract]
Principles of Consolidation	Principles of Consolidation — The accompanying condensed consolidated financial statements include the results of operations of the Company and its wholly-owned subsidiaries. All intercompany transactions and balances have been eliminated in consolidation. The Company has prepared the accompanying condensed consolidated financial statements in conformity with accounting principles generally accepted in the United States of America (“GAAP”).
Unaudited Interim Condensed Consolidated Financial Statements	Unaudited Interim Condensed Consolidated Financial Statements — The accompanying condensed consolidated financial statements and the related interim information contained within the notes to the condensed consolidated financial statements are unaudited and have been prepared in accordance with GAAP and applicable rules and regulations of the Securities and Exchange Commission for interim financial information. Accordingly, they do not include all of the information and notes required by GAAP for complete financial statements. The accompanying unaudited condensed consolidated financial statements should be read along with the Company’s audited financial statements included in the Company’s Annual Report on Form 10-K, filed with the Securities and Exchange Commission on February 20, 2015. The unaudited interim financial statements have been prepared on the same basis as the audited financial statements and in the opinion of management, reflect all adjustments, consisting of normal and recurring adjustments, necessary for the fair presentation of the Company’s financial position, results of operations and cash flows for the interim periods presented. The results for the interim periods presented are not necessarily indicative of future results. The Company considers events or transactions that occur after the balance sheet date but before the financial statements are issued to provide additional evidence relative to certain estimates or to identify matters that require additional disclosure.
Use of Estimates	Use of Estimates — The preparation of 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 financial statements and the reported amounts of revenue and expenses during the reporting period. By their nature, estimates are subject to an inherent degree of uncertainty. Actual results could differ from those estimates.
Marketable Securities	Marketable Securities — The Company’s marketable securities are classified as available-for-sale and are carried at fair value with the unrealized gains and losses, net of tax, reported as a component of accumulated other comprehensive loss in equity. Realized gains and losses and declines in value judged to be other than temporary are included as a component of earnings based on the specific identification method. Fair value is determined based on quoted market prices. At December 31, 2014 and March 31, 2015, marketable securities consisted of U.S. government agency securities and corporate bonds that have remaining maturities within two years and have an aggregate amortized cost of $100.3 million. The marketable securities have an aggregate fair value of $100.2 million and $100.3 million, including $9,000 and $59,000 of unrealized gains and $138,000 and $10,000 of unrealized losses, respectively.
Revenue Recognition	Revenue Recognition — The Company derives revenue primarily from subscription fees related to its LogMeIn premium services and, to a lesser extent, the delivery of professional services, primarily related to its Xively business.
	Revenue from the Company’s LogMeIn premium services is recognized on a daily basis over the subscription term as the services are delivered, provided that there is persuasive evidence of an arrangement, the fee is fixed or determinable and collectability is deemed reasonably assured. Subscription periods range from monthly to five years, but are generally one year in duration. The Company’s software cannot be run on another entity’s hardware nor do customers have the right to take possession of the software and use it on their own or another entity’s hardware.
	The Company’s multi-element arrangements typically include subscription and professional services, which may include development services. The Company evaluates each element within the arrangement to determine if they can be accounted for as separate units of accounting. If the delivered item or items have value to the customer on a standalone basis, either because they are sold separately by any vendor or the customer could resell the delivered item or items on a standalone basis, the Company has determined that the deliverables within these arrangements qualify for treatment as separate units of accounting. Accordingly, the Company recognizes revenue for each delivered item or items as a separate earnings process commencing when all of the significant performance obligations have been performed and when all of the revenue recognition criteria have been met. Professional services revenue recognized as a separate earnings process under multi-element arrangements has been immaterial to date. In cases where the Company has determined that the delivered items within its multi-element arrangements do not have value to the customer on a stand-alone basis, the arrangement is accounted for as a single unit of accounting and the related consideration is recognized ratably over the estimated customer life, commencing when all of the significant performance obligations have been delivered and when all of the revenue recognition criteria have been met.
	Revenues are reported net of applicable sales and use tax, value-added tax, and other transaction taxes imposed on the related transaction.
Concentrations of Credit Risk and Significant Customers	Concentrations of Credit Risk and Significant Customers — The Company’s principal credit risk relates to its cash, cash equivalents, marketable securities, restricted cash, and accounts receivable. Cash, cash equivalents, and restricted cash are deposited primarily with financial institutions that management believes to be of high-credit quality and custody of its marketable securities is with an accredited financial institution. To manage accounts receivable credit risk, the Company regularly evaluates the creditworthiness of its customers and maintains allowances for potential credit losses. To date, losses resulting from uncollected receivables have not exceeded management’s expectations.
	As of December 31, 2014, one customer accounted for 15% of accounts receivable and there were no customers that represented 10% or more of revenue. For the three months ended March 31, 2014 and 2015, no customers accounted for more than 10% of revenue. As of March 31, 2015, one customer accounted for more than 10% of accounts receivable.
Goodwill	Goodwill — Goodwill is the excess of the acquisition price over the fair value of the tangible and identifiable intangible net assets acquired. The Company does not amortize goodwill, but performs an impairment test of goodwill annually or whenever events and circumstances indicate that the carrying amount of goodwill may exceed its fair value. The Company operates as a single operating segment with one reporting unit and consequently evaluates goodwill for impairment based on an evaluation of the fair value of the Company as a whole. As of December 31, 2014, the fair value of the Company as a whole significantly exceeded the carrying amount of the Company. Through March 31, 2015, no impairments have occurred.
Long-Lived Assets and Intangible Assets	Long-Lived Assets and Intangible Assets — The Company records intangible assets at their respective estimated fair values at the date of acquisition. Intangible assets are being amortized based upon the pattern in which their economic benefit will be realized, or if this pattern cannot be reliably determined, using the straight-line method over their estimated useful lives, which range from four months to eight years.
	The Company reviews long-lived assets for impairment whenever events or changes in circumstances indicate that the carrying amount of the assets, including intangible assets, may not be recoverable. When such events occur, the Company compares the carrying amounts of the assets to their undiscounted expected future cash flows. If this comparison indicates that there is impairment, the amount of the impairment is calculated as the difference between the carrying value and fair value. The Company did not record any impairments for the quarter ended March 31, 2015.
Foreign Currency Translation	Foreign Currency Translation — The functional currency of operations outside the United States of America is deemed to be the currency of the local country, unless otherwise determined that the United States dollar would serve as a more appropriate functional currency given the economic operations of the entity. Accordingly, the assets and liabilities of the Company’s foreign subsidiaries are translated into United States dollars using the period-end exchange rate, and income and expense items are translated using the average exchange rate during the period. Cumulative translation adjustments are reflected as a separate component of equity. Foreign currency transaction gains and losses are charged to operations. The Company had foreign currency losses of approximately $28,000 for the three months ended March 31, 2014, and foreign currency gains of approximately $1.3 million for the three months ended March 31, 2015 included in other (expense) income in the condensed consolidated statements of operations
Stock-Based Compensation	Stock-Based Compensation — The Company values all stock-based compensation, including grants of stock options and restricted stock units, at fair value on the date of grant and recognizes the expense over the requisite service period, which is generally the vesting period of the award, for those awards expected to vest, on a straight-line basis. The Company uses the with-or-without method to determine when it will realize excess tax benefits from stock based compensation. Under this method, the Company will realize these excess tax benefits only after it realizes the tax benefits of net operating losses from operations.
Income Taxes	Income Taxes — Deferred income taxes are provided for the tax effects of temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and the amounts used for income tax purposes, and operating loss carry-forwards and credits using enacted tax rates expected to be in effect in the years in which the differences are expected to reverse. At each balance sheet date, the Company assesses the likelihood that deferred tax assets will be realized, and recognizes a valuation allowance if it is more likely than not that some portion of the deferred tax assets will not be realized. This assessment requires judgment as to the likelihood and amounts of future taxable income by tax jurisdiction.
	The Company evaluates its uncertain tax positions based on a determination of whether and how much of a tax benefit taken by the Company in its tax filings is more likely than not to be realized. Potential interest and penalties associated with any uncertain tax positions are recorded as a component of income tax expense. As of December 31, 2014 and March 31, 2015, the Company has provided a liability for approximately $652,000 and $738,000 for uncertain tax positions. These uncertain tax positions would impact the Company’s effective tax rate if recognized.
Segment Data	Segment Data — Operating segments are identified as components of an enterprise about which separate discrete financial information is available for evaluation and reviewed regularly by the chief operating decision-maker, or decision making group, in making decisions regarding resource allocation and assessing performance. The Company, which uses consolidated financial information in determining how to allocate resources and assess performance, has determined that it operates in one segment.
	The Company’s revenue by geography (based on customer address) is as follows (in thousands):
		Three Months Ended March 31,
		2014		2015
	Revenue:
	United States	$	32,405	$	42,629
	United Kingdom		4,407		4,885
	International - all other		12,208		13,595
	Total revenue	$	49,020	$	61,109
Guarantees and Indemnification Obligations	Guarantees and Indemnification Obligations — As permitted under Delaware law, the Company has agreements whereby the Company indemnifies certain of its officers and directors for certain events or occurrences while the officer or director is, or was, serving at the Company’s request in such capacity. The term of the indemnification period is for the officer’s or director’s lifetime. As permitted under Delaware law, the Company also has similar indemnification obligations under its certificate of incorporation and by-laws. The maximum potential amount of future payments the Company could be required to make under these indemnification agreements is unlimited; however, the Company has director’s and officer’s insurance coverage that the Company believes limits its exposure and enables it to recover a portion of any future amounts paid.
	The Company has entered into agreements with certain customers that contractually obligate the Company to indemnify the customer from certain claims, including claims alleging that the Company’s products infringe third-party patents, copyrights, or trademarks. The term of these indemnification obligations is generally perpetual. The maximum potential amount of future payments the Company could be required to make under these indemnification obligations is unlimited. Through March 31, 2015, the Company has not experienced any losses related to these indemnification obligations.
Net Income Per Share	Net Income Per Share — Basic net income per share is computed by dividing net income by the weighted average number of common shares outstanding for the period. Diluted net income per share is computed by dividing net income by the sum of the weighted average number of common shares outstanding during the period and the weighted average number of potential common shares outstanding from the assumed exercise of stock options and the vesting of restricted stock units.
	The Company excluded the following options to purchase common shares and restricted stock units from the computation of diluted net income per share because they had an anti-dilutive impact (in thousands):
		Three Months Ended March 31,
		2014		2015
	Options to purchase common shares		933		39
	Restricted stock units		173		—
	Total options and restricted stock units		1,106		39
	Basic and diluted net income per share was calculated as follows (in thousands, except share and per share data):
		Three Months Ended
		March 31, 2014
	Basic:
	Net income	$	1,004
	Weighted average common shares outstanding, basic		24,123,291
	Net income, basic	$	0.04
	Diluted:
	Net income	$	1,004
	Weighted average common shares outstanding, basic		24,123,291
	Add: Common stock equivalents		626,220
	Weighted average common shares outstanding, diluted		24,749,511
	Net income, diluted	$	0.04
		Three Months Ended
		March 31, 2015
	Basic:
	Net income	$	372
	Weighted average common shares outstanding, basic		24,626,872
	Net income, basic	$	0.02
	Diluted:
	Net income	$	372
	Weighted average common shares outstanding, basic		24,626,872
	Add: Common stock equivalents		930,312
	Weighted average common shares outstanding, diluted		25,557,184
	Net income, diluted	$	0.01
Recently Issued Accounting Pronouncements	Recently Issued Accounting Pronouncements — On May 28, 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers (“ASU 2014-09”), its final standard on revenue from contracts with customers. ASU 2014-9 outlines a single comprehensive model for entities to use in accounting for revenue arising from contracts with customers and supersedes most current revenue recognition guidance, including industry-specific guidance. The core principle of the revenue model is that an entity recognizes revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. In applying the revenue model to contracts within its scope, an entity identifies the contract(s) with a customer, identifies the performance obligations in the contract, determines the transaction price, allocates the transaction price to the performance obligations in the contract and recognizes revenue when (or as) the entity satisfies a performance obligation. ASU 2014-09 applies to all contracts with customers that are within the scope of other topics in the FASB Accounting Standards Codification. Certain of ASU 2014-09’s provisions also apply to transfers of nonfinancial assets, including in-substance nonfinancial assets that are not an output of an entity’s ordinary activities (i.e., property plant and equipment; real estate; or intangible assets). Existing accounting guidance applicable to these transfers has been amended or superseded. ASU 2014-09 also requires significantly expanded disclosures about revenue recognition. ASU 2014-09 is effective for the Company on January 1, 2017. The FASB voted on April 1, 2015 to propose a deferral of the effective date of the new revenue standard by one year. The FASB’s proposed deferral is not a final decision. The Company is currently assessing the potential impact of the adoption of ASU 2014-09 on its condensed consolidated financial statements.
	On June 19, 2014, the FASB issued ASU 2014-12, Stock Compensation (“ASU 2014-12”), providing guidance on accounting for share-based payment awards when the terms of an award provide that a performance target could be achieved after the requisite service period. The update clarifies that performance targets that can be achieved after the requisite service period of a share-based payment award be treated as performance conditions that affect vesting. These awards should be accounted for under Accounting Standards Codification Topic 718, Compensation — Stock Compensation, and existing guidance should be applied as it relates to awards with performance conditions that affect vesting. The update is effective for the Company for the interim and annual periods beginning after December 15, 2015. The Company is currently evaluating the impact of the adoption of this standard, if any, on its consolidated financial statements.
	On August 27, 2014, the FASB issued ASU 2014-15, Presentation of Financial Statements — Going Concern: Disclosure of Uncertainties about an Entity’s Ability to Continue as a Going Concern (“ASU 2014-15”). The standard requires that the Company evaluates, at each interim and annual reporting period, whether there are conditions or events that raise substantial doubt about its ability to continue as a going concern within one year after the date the financial statements are issued, and provide related disclosures. ASU 2014-15 is effective for annual periods ending after December 15, 2016, and for annual and interim periods thereafter, and early adoption is permitted. The Company does not expect to early adopt ASU 2014-15, which will be effective for its fiscal year ending December 31, 2016. The Company does not believe the standard will have a material impact on its consolidated financial statements.
	On January 9, 2015, the FASB issued ASU 2015-01, Simplifying Income Statement Presentation by Eliminating the Concept of Extraordinary Items (“ASU 2015-01”). The standard eliminates the requirement of Extraordinary Items to be separately classified on the income statement. ASU 2015-01 is effective for annual periods ending after December 15, 2015, and for annual and interim periods thereafter, and early adoption is permitted. The Company does not expect to early adopt ASU 2015-01, which will be effective for its fiscal year ending December 31, 2016. The Company does not believe the standard will have a material impact on its consolidated financial statements.
	On February 18, 2015, the FASB issued ASU 2015-02, Consolidation: Amendments to the Consolidation Analysis (“ASU 2015-02”). The standard amends the consolidation requirements in ASC 810. ASU 2015-02 is effective for fiscal periods beginning after December 15, 2015 for public companies, and early adoption is permitted. The Company does not expect to early adopt ASU 2015-02, which will be effective for its fiscal year ending December 31, 2016. The Company does not believe the standard will have a material impact on its consolidated financial statements.
	On April 7, 2015, the FASB issued ASU 2015-03, Interest- Imputation of Interest: Simplifying the Presentation of Debt Issuance Costs (“ASU 2015-03”). The standard requires an entity to present debt issuance costs on the balance sheets as a direct deduction from the related debt liability rather than as an asset, and the amortization is reported as interest expense. ASU 2015-03 is effective for fiscal periods beginning after December 15, 2015, and interim periods beginning after December 15, 2016. Early adoption is permitted for entities for financial statements that have not been previously issued. The Company does not expect to early adopt ASU 2015-03, which will be effective for its fiscal year ending December 31, 2016. The Company does not believe the standard will have a material impact on its consolidated financial statements.
	On April 15, 2015, the FASB issued ASU 2015-05, Intangibles—Goodwill and Other—Internal-Use Software: Customer’s Accounting for Fees Paid in a Cloud Computing Arrangement (“ASU 2015-05”). The standard clarifies the circumstances under which a cloud computing customer would account for the arrangement as a license of internal-use software under ASC 350-40. ASU 2015-05 is effective for annual periods (and interim periods therein) beginning after December 15, 2015, and interim and annual periods beginning after December 15, 2016, and early adoption is permitted. The Company does not expect to early adopt ASU 2015-05, which will be effective for its fiscal year ending December 31, 2016. The Company does not believe the standard will have a material impact on its consolidated financial statements.

Summary_of_Significant_Account2

Summary of Significant Accounting Policies (Tables)	3 Months Ended
	Mar. 31, 2015
Accounting Policies [Abstract]
Schedule of Revenue by Geographic Areas	The Company’s revenue by geography (based on customer address) is as follows (in thousands):
		Three Months Ended March 31,
		2014		2015
	Revenue:
	United States	$	32,405	$	42,629
	United Kingdom		4,407		4,885
	International - all other		12,208		13,595
	Total revenue	$	49,020	$	61,109
Schedule of Options to Purchase Common Shares and Restricted Stock Units	The Company excluded the following options to purchase common shares and restricted stock units from the computation of diluted net income per share because they had an anti-dilutive impact (in thousands):
		Three Months Ended March 31,
		2014		2015
	Options to purchase common shares		933		39
	Restricted stock units		173		—
	Total options and restricted stock units		1,106		39
Reconciliation of Basic and Diluted Net Income per Share	Basic and diluted net income per share was calculated as follows (in thousands, except share and per share data):
		Three Months Ended
		March 31, 2014
	Basic:
	Net income	$	1,004
	Weighted average common shares outstanding, basic		24,123,291
	Net income, basic	$	0.04
	Diluted:
	Net income	$	1,004
	Weighted average common shares outstanding, basic		24,123,291
	Add: Common stock equivalents		626,220
	Weighted average common shares outstanding, diluted		24,749,511
	Net income, diluted	$	0.04
		Three Months Ended
		March 31, 2015
	Basic:
	Net income	$	372
	Weighted average common shares outstanding, basic		24,626,872
	Net income, basic	$	0.02
	Diluted:
	Net income	$	372
	Weighted average common shares outstanding, basic		24,626,872
	Add: Common stock equivalents		930,312
	Weighted average common shares outstanding, diluted		25,557,184
	Net income, diluted	$	0.01

Fair_Value_of_Financial_Instru1

Fair Value of Financial Instruments (Tables)	3 Months Ended
	Mar. 31, 2015
Fair Value Disclosures [Abstract]
Summary of Company's Financial Assets Carried at Fair Value	The following table summarizes the basis used to measure certain of the Company’s financial assets that are carried at fair value (in thousands):
		Fair Value Measurements at December 31, 2014 Using
		Level 1			Level 2		Level 3		Total
	Financial Assets:
	Cash equivalents — money market funds	$	13,139		$	—	$	—	$	13,139
	Cash equivalents — bank deposits		—			5,003		—		5,003
	Short-term marketable securities —
	U.S. government agency securities		59,903			19,950		—		79,853
	Corporate bond securities		—			20,356		—		20,356
	Contingent consideration liability		—			—		249		249
	Total	$	73,042		$	45,309	$	249	$	118,600
		Fair Value Measurements at March 31, 2015 Using
		Level 1			Level 2		Level 3		Total
	Financial Assets:
	Cash equivalents — money market funds	$	17,523		$	—	$	—	$	17,523
	Cash equivalents — bank deposits		—			5,003		—		5,003
	Short-term marketable securities —
	U.S. government agency securities		50,022			29,987		—		80,009
	Corporate bond securities		—			20,312		—		20,312
	Contingent consideration liability		—			—		25		25
	Total	$	67,545		$	55,302	$	25	$	122,872
Reconciliation of Beginning and Ending Level 3 Liability	A reconciliation of the beginning and ending Level 3 liability is as follows:
		Three months ended
		March 31,
		2015
	Balance beginning of period	$	249
	Additions to Level 3		—
	Payments		(226	)
	Change in fair value of contingent consideration liability		2
	Balance end of period	$	25

Acquisitions_Tables

Acquisitions (Tables)	3 Months Ended
	Mar. 31, 2015
Ionia Corp [Member]
Purchase Price Allocation	The purchase price was allocated as follows (in thousands):
		Amount
	Cash	$	67
	Current assets		296
	Other assets		26
	Deferred revenue		(70	)
	Other liabilities		(864	)
	Customer backlog		120
	Trade name and trademark		10
	Customer relationships		1,340
	Documented know-how		280
	Goodwill		6,295
	Total purchase price	$	7,500
BBA, Inc., "Meldium" [Member]
Purchase Price Allocation	The following table summarizes the fair value (in thousands) of the assets acquired and liabilities assumed at the date of acquisition:
		Amount
	Cash	$	120
	Current assets		90
	Other assets		436
	Deferred revenue		(5	)
	Other liabilities		(935	)
	Completed technology		1,580
	Trade name and trademark		30
	Customer relationships		100
	Goodwill		9,437
	Total purchase price		10,853
	Liability for contingent consideration		(216	)
	Cash paid	$	10,637
San Francisco, California-based Collaboration Software Provider [Member]
Purchase Price Allocation	The following table summarizes the fair value (in thousands) of the assets acquired and liabilities assumed at the date of acquisition:
		Amount
	Cash	$	2
	Current assets		13
	Other assets		404
	Other liabilities		(439	)
	Completed technology		960
	Trade name and trademark		100
	Goodwill		3,484
	Total purchase price		4,524
	Liability for contingent consideration		(24	)
	Cash paid	$	4,500

Goodwill_and_Intangible_Assets1

Goodwill and Intangible Assets (Tables)	3 Months Ended
	Mar. 31, 2015
Goodwill and Intangible Assets Disclosure [Abstract]
Intangible Assets	Intangible assets consist of the following (in thousands):
				December 31, 2014						March 31, 2015
		Estimated		Gross		Accumulated		Net		Gross		Accumulated		Net Carrying
		Useful Life		Carrying		Amortization		Carrying		Carrying		Amortization		Amount
				Amount				Amount		Amount
	Trade names and trademarks		1-5 years	$	806	$	682	$	124	$	806	$	713	$	93
	Customer relationships		5-8 years		5,229		2,546		2,683		5,229		2,737		2,492
	Customer backlog		4 months		120		120		—		120		120		—
	Domain names		5 years		907		507		400		904		547		357
	Software		4 years		299		299		—		299		299		—
	Completed technology		3-8 years		16,903		3,981		12,922		16,903		4,673		12,230
	Technology and know-how		3 years		3,176		3,176		—		3,176		3,176		—
	Documented know-how		4 years		280		57		223		280		75		205
	Non-Compete agreements		5 years		162		71		91		162		82		80
	Internally developed software		3 years		4,591		2,051		2,540		5,609		2,264		3,345
				$	32,473	$	13,490	$	18,983	$	33,488	$	14,686	$	18,802
Future Estimated Amortization Expense	Future estimated amortization expense for intangible assets is as follows at March 31, 2015 (in thousands):
	Amortization Expense (Years Ending December 31)	Amount
	2015 (Nine months ending December 31)		4,003
	2016		4,948
	2017		4,607
	2018		3,612
	2019		1,096
	Thereafter		536
	Total	$	18,802

Accrued_Liabilities_Tables

Accrued Liabilities (Tables)	3 Months Ended
	Mar. 31, 2015
Payables and Accruals [Abstract]
Summary of Accrued Liabilities	Accrued liabilities consisted of the following (in thousands):
		December 31,		March 31,
		2014		2015
	Marketing programs	$	7,626	$	7,031
	Payroll and payroll related		14,873		8,335
	Professional fees		1,961		2,566
	Legal settlements		—		8,300
	Other accrued liabilities		5,022		7,277
	Total accrued liabilities	$	29,482	$	33,509

Stock_Incentive_Plan_Tables

Stock Incentive Plan (Tables)	3 Months Ended
	Mar. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Summary of Assumptions to Apply Black-Scholes Option-Pricing Model	The Company used the following assumptions to apply the Black-Scholes option-pricing model:
			Three Months Ended March 31,
			2014			2015(1)
	Expected dividend yield			0	%		—	%
	Risk-free interest rate			1.48	%		—	%
	Expected option life (years)			6.25			—
	Expected volatility			55	%		—	%
	-1	There were no stock options granted during the three months ended March 31, 2015.
Summary of Stock Option Activity Including Performance-based Options	The following table summarizes stock option activity, including performance-based options (shares and intrinsic value in thousands):
			Number			Weighted			Weighted		Aggregate
			of shares			Average			Average		Intrinsic Value
						Exercise			Remaining
						Price			Contractual
									Term (Years)
	Outstanding at January 1, 2015			1,407		$	30.02			6.2	$	27,186
	Granted			—			—
	Exercised			(261	)		33.93				$	5,023
	Forfeited			(12	)		38.75
	Outstanding at March 31, 2015			1,134		$	29.02			6	$	30,576
	Exercisable at December 31, 2014			957		$	28.24			5.7	$	20,190
	Exercisable at March 31, 2015			874		$	28.62			5.5	$	23,919
Summary of Assumptions Used in Monte Carlo Simulation Model	The assumptions used in the Monte Carlo simulation model include (but are not limited to) the following:
			August 2013 Grant			May 2014 Grant
	Risk-free interest rate			0.62	%		0.78	%
	Volatility			54	%		54	%
Schedule of Restricted Stock Unit Activity Including Performance-based Restricted Stock Units	The following table summarizes restricted stock unit activity, including performance-based restricted stock units (shares in thousands):
			Number of shares			Weighted Average
			Underlying Restricted			Grant Date Fair
			Stock Units			Value
	Unvested as of January 1, 2015			1,279		$	37.42
	Restricted stock units granted			242			48.69
	Restricted stock units vested			(112	)		33.47
	Restricted stock units forfeited			(138	)		42.36
	Unvested as of March 31, 2015			1,271		$	39.38
Schedule of Stock Based Compensation Allocated to Expense	The Company recognized stock based compensation expense within the accompanying condensed consolidated statements of operations as summarized in the following table (in thousands):
			Three Months Ended March 31,
			2014			2015
	Cost of revenue		$	235		$	354
	Research and development			776			1,328
	Sales and marketing			2,061			2,030
	General and administrative			2,366			1,141
			$	5,438		$	4,853

Commitments_and_Contingencies_

Commitments and Contingencies (Tables)	3 Months Ended
	Mar. 31, 2015
Commitments and Contingencies Disclosure [Abstract]
Schedule of Minimum Future Lease Payments Receivable	Future minimum lease payments under non-cancelable operating leases including one year commitments associated with the Company’s hosting services arrangements are approximately as follows at March 31, 2015 (in thousands):
	Years Ending December 31
	2015 (Nine months ending December 31)	$	7,893
	2016		9,945
	2017		10,291
	2018		10,324
	2019		9,786
	Thereafter		53,128
	Total minimum lease payments	$	101,367

Accumulated_Other_Comprehensiv1

Accumulated Other Comprehensive Loss (Tables)	3 Months Ended
	Mar. 31, 2015
Equity [Abstract]
Schedule of Changes in Accumulated Other Comprehensive Income	The changes in accumulated other comprehensive income for the three months ended March 31, 2015 consisted of the following (in thousands):
		Unrealized Gain (Loss) on			Foreign Currency			Total
		Marketable Securities			Translation Adjustment
	Balance at December 31, 2014	$	(82	)	$	(3,035	)	$	(3,117	)
	Other comprehensive income (loss)		114			(1,532	)		(1,418	)
	Balance at March 31, 2015	$	32		$	(4,567	)	$	(4,535	)

Summary_of_Significant_Account3

Summary of Significant Accounting Policies - Additional Information (Detail) (USD $)	3 Months Ended		12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Organization And Summary Of Significant Accounting Policies [Line Items]
Marketable securities, maturities remaining	2 years
Marketable securities, amortized cost	100,300,000		100,300,000
Marketable securities	100,321,000		100,209,000
Marketable securities, unrealized gains	59,000		9,000
Marketable securities, unrealized losses	10,000		138,000
Number of reporting unit	1
Goodwill impairments	0
Long-lived asset impairment	0
Foreign currency losses		28,000
Foreign currency gains	1,300,000
Uncertain tax positions	738,000		652,000
Accounts Receivable [Member]
Organization And Summary Of Significant Accounting Policies [Line Items]
Percentage outstanding for major customer	10.00%		15.00%
Accounts receivable, number of major customers	1		1
Accounts receivable, customers accounted description	10% of accounts receivable.		15% of accounts receivable
Sales Revenue, Net [Member]
Organization And Summary Of Significant Accounting Policies [Line Items]
Percentage outstanding for major customer	10.00%	10.00%
Revenue, number of customers accounted	0	0	0
Revenue, customers accounted description	10% or more of revenue	10% or more of revenue	10% or more of revenue
Minimum [Member]
Organization And Summary Of Significant Accounting Policies [Line Items]
Revenue subscription period	1 month
Intangible assets, estimated useful life	4 months
Maximum [Member]
Organization And Summary Of Significant Accounting Policies [Line Items]
Revenue subscription period	5 years
Intangible assets, estimated useful life	8 years
Weighted Average [Member]
Organization And Summary Of Significant Accounting Policies [Line Items]
Revenue subscription period	1 year

Summary_of_Significant_Account4

Summary of Significant Accounting Policies - Schedule of Revenue by Geographic Areas (Detail) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Revenue from External Customer [Line Items]
Revenue	$61,109,000	$49,020,000
United States [Member]
Revenue from External Customer [Line Items]
Revenue	42,629,000	32,405,000
United Kingdom [Member]
Revenue from External Customer [Line Items]
Revenue	4,885,000	4,407,000
International - All Other [Member]
Revenue from External Customer [Line Items]
Revenue	$13,595,000	$12,208,000

Summary_of_Significant_Account5

Summary of Significant Accounting Policies - Schedule of Options to Purchase Common Shares and Restricted Stock Units (Detail)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total options and restricted stock units	39	1,106
Options to Purchase Common Shares [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total options and restricted stock units	39	933
Restricted Stock Units [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total options and restricted stock units		173

Summary_of_Significant_Account6

Summary of Significant Accounting Policies - Reconciliation of Basic and Diluted Net Income per Share (Detail) (USD $)	3 Months Ended
In Thousands, except Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Basic:
Net income	$372	$1,004
Weighted average common shares outstanding, basic	24,626,872	24,123,291
Net income, basic	$0.02	$0.04
Diluted:
Net income	$372	$1,004
Weighted average common shares outstanding, basic	24,626,872	24,123,291
Add: Common stock equivalents	930,312	626,220
Weighted average common shares outstanding, diluted	25,557,184	24,749,511
Net income, diluted	$0.01	$0.04

Fair_Value_of_Financial_Instru2

Fair Value of Financial Instruments - Summary of Company's Financial Assets Carried at Fair Value (Detail) (USD $)	Mar. 31, 2015	Dec. 31, 2014
Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration liability	$25,000	$249,000
Total	122,872,000	118,600,000
Recurring [Member] | Money Market Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	17,523,000	13,139,000
Recurring [Member] | Bank Deposits [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	5,003,000	5,003,000
Recurring [Member] | U.S. Government Agency Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term marketable securities	80,009,000	79,853,000
Recurring [Member] | Corporate Bond Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term marketable securities	20,312,000	20,356,000
Quoted Prices in Active Markets for Identical Items (Level 1) [Member] | Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total	67,545,000	73,042,000
Quoted Prices in Active Markets for Identical Items (Level 1) [Member] | Recurring [Member] | Money Market Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	17,523,000	13,139,000
Quoted Prices in Active Markets for Identical Items (Level 1) [Member] | Recurring [Member] | U.S. Government Agency Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term marketable securities	50,022,000	59,903,000
Significant Other Observable Inputs (Level 2) [Member] | Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total	55,302,000	45,309,000
Significant Other Observable Inputs (Level 2) [Member] | Recurring [Member] | Bank Deposits [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	5,003,000	5,003,000
Significant Other Observable Inputs (Level 2) [Member] | Recurring [Member] | U.S. Government Agency Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term marketable securities	29,987,000	19,950,000
Significant Other Observable Inputs (Level 2) [Member] | Recurring [Member] | Corporate Bond Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term marketable securities	20,312,000	20,356,000
Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration liability	25,000	249,000
Significant Unobservable Inputs (Level 3) [Member] | Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration liability	25,000	249,000
Total	$25,000	$249,000

Fair_Value_of_Financial_Instru3

Fair Value of Financial Instruments - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2015
Debt Instrument Fair Value Carrying Value [Abstract]
Fair value, discount rate	12.00%

Fair_Value_of_Financial_Instru4

Fair Value of Financial Instruments - Reconciliation of Beginning and Ending Level 3 Liability (Detail) (USD $)	3 Months Ended
	Mar. 31, 2015
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Additions to Level 3	$0
Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Balance beginning of period	249,000
Payments	-226,000
Change in fair value of contingent consideration liability	2,000
Balance end of period	$25,000

Acquisitions_Additional_Inform

Acquisitions - Additional Information (Detail) (USD $)	3 Months Ended		0 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Aug. 27, 2014	Sep. 05, 2014	Mar. 07, 2014	Dec. 31, 2014
Business Acquisition [Line Items]
Operating revenues	$61,109,000	$49,020,000
Operating expenses	54,091,000	41,302,000
Deferred tax liability, intangible assets	700,000
Deferred income tax assets	5,334,000					5,403,000
Deferred tax asset related to operating losses	9,271,000					9,280,000
Acquisition-related costs		100,000
BBA, Inc., "Meldium" [Member]
Business Acquisition [Line Items]
Initial cash payment	10,637,000		10,600,000
Contingent liability	216,000		4,600,000
Maturity period for contingent payment	2 years
Contingent payments	1,000,000
Range of contingent payments, Minimum	0
Range of contingent payments, Maximum	4,300,000
Deferred tax liability, intangible assets	694,000
Deferred income tax assets	88,000
Deferred tax asset related to operating losses	433,000
BBA, Inc., "Meldium" [Member] | Non-Employee Stockholder [Member]
Business Acquisition [Line Items]
Contingent liability	216,000
Range of contingent payments, Minimum	0
Range of contingent payments, Maximum	226,000
San Francisco, California-based Collaboration Software Provider [Member]
Business Acquisition [Line Items]
Initial cash payment	4,500,000			4,500,000
Contingent liability	24,000			1,500,000
Maturity period for contingent payment	2 years
Range of contingent payments, Minimum	0
Range of contingent payments, Maximum	1,500,000
Deferred tax liability, intangible assets	430,000
Deferred tax asset related to operating losses	402,000
San Francisco, California-based Collaboration Software Provider [Member] | Non-Employee Stockholder [Member]
Business Acquisition [Line Items]
Contingent liability	24,000
Range of contingent payments, Minimum	0
Range of contingent payments, Maximum	30,000
Ionia Corp [Member]
Business Acquisition [Line Items]
Initial cash payment					7,500,000
Contingent liability					4,000,000
Maturity period for contingent payment	2 years
Contingent payments	2,000,000
Operating revenues		221,000
Operating expenses		471,000
Range of contingent payments, Minimum	0
Range of contingent payments, Maximum	$4,000,000

Acquisitions_Purchase_Price_Al

Acquisitions - Purchase Price Allocation (Detail) (USD $)	0 Months Ended		3 Months Ended	0 Months Ended
	Mar. 07, 2014	Aug. 27, 2014	Mar. 31, 2015	Sep. 05, 2014	Dec. 31, 2014
Business Acquisition [Line Items]
Goodwill			$37,928,000		$37,928,000
Ionia Corp [Member]
Business Acquisition [Line Items]
Cash			67,000
Current assets			296,000
Other assets			26,000
Deferred revenue			-70,000
Other liabilities			-864,000
Goodwill			6,295,000
Total purchase price			7,500,000
Liability for contingent consideration	-4,000,000
Cash paid	7,500,000
Ionia Corp [Member] | Customer Backlog [Member]
Business Acquisition [Line Items]
Business acquisition, Intangible assets			120,000
Ionia Corp [Member] | Trade Name and Trademark [Member]
Business Acquisition [Line Items]
Business acquisition, Intangible assets			10,000
Ionia Corp [Member] | Customer Relationships [Member]
Business Acquisition [Line Items]
Business acquisition, Intangible assets			1,340,000
Ionia Corp [Member] | Documented Know-how [Member]
Business Acquisition [Line Items]
Business acquisition, Intangible assets			280,000
BBA, Inc., "Meldium" [Member]
Business Acquisition [Line Items]
Cash			120,000
Current assets			90,000
Other assets			436,000
Deferred revenue			-5,000
Other liabilities			-935,000
Goodwill			9,437,000
Total purchase price			10,853,000
Liability for contingent consideration		-4,600,000	-216,000
Cash paid		10,600,000	10,637,000
BBA, Inc., "Meldium" [Member] | Trade Name and Trademark [Member]
Business Acquisition [Line Items]
Business acquisition, Intangible assets			30,000
BBA, Inc., "Meldium" [Member] | Customer Relationships [Member]
Business Acquisition [Line Items]
Business acquisition, Intangible assets			100,000
BBA, Inc., "Meldium" [Member] | Completed Technology [Member]
Business Acquisition [Line Items]
Business acquisition, Intangible assets			1,580,000
San Francisco, California-based Collaboration Software Provider [Member]
Business Acquisition [Line Items]
Cash			2,000
Current assets			13,000
Other assets			404,000
Other liabilities			-439,000
Goodwill			3,484,000
Total purchase price			4,524,000
Liability for contingent consideration			-24,000	-1,500,000
Cash paid			4,500,000	4,500,000
San Francisco, California-based Collaboration Software Provider [Member] | Trade Name and Trademark [Member]
Business Acquisition [Line Items]
Business acquisition, Intangible assets			100,000
San Francisco, California-based Collaboration Software Provider [Member] | Completed Technology [Member]
Business Acquisition [Line Items]
Business acquisition, Intangible assets			$960,000

Goodwill_and_Intangible_Assets2

Goodwill and Intangible Assets - Additional Information (Detail) (USD $)	3 Months Ended		12 Months Ended	0 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014	Nov. 06, 2013
Finite-Lived Intangible Assets [Line Items]
Changes in carrying amount of goodwill	$0
Internally developed software	1,000,000	491,000
Total amortization of intangible assets	1,200,000	1,000,000
Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, estimated useful life	4 months
Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, estimated useful life	8 years
Ionia Corp [Member] | Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, estimated useful life	4 months
Ionia Corp [Member] | Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, estimated useful life	8 years
BBA, Inc., "Meldium" [Member] | Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, estimated useful life	4 months
BBA, Inc., "Meldium" [Member] | Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, estimated useful life	8 years
San Francisco, California-based Collaboration Software Provider [Member] | Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, estimated useful life	4 months
San Francisco, California-based Collaboration Software Provider [Member] | Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, estimated useful life	8 years
Customer Backlog [Member] | Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, estimated useful life			4 months
Customer Backlog [Member] | Ionia Corp [Member]
Finite-Lived Intangible Assets [Line Items]
Business acquisition, Intangible assets	120,000
Documented Know-how [Member] | Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, estimated useful life			4 years
Documented Know-how [Member] | Ionia Corp [Member]
Finite-Lived Intangible Assets [Line Items]
Business acquisition, Intangible assets	280,000
Trade Name and Trademark [Member] | Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, estimated useful life			1 year
Trade Name and Trademark [Member] | Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, estimated useful life			5 years
Trade Name and Trademark [Member] | Ionia Corp [Member]
Finite-Lived Intangible Assets [Line Items]
Business acquisition, Intangible assets	10,000
Trade Name and Trademark [Member] | BBA, Inc., "Meldium" [Member]
Finite-Lived Intangible Assets [Line Items]
Business acquisition, Intangible assets	30,000
Trade Name and Trademark [Member] | San Francisco, California-based Collaboration Software Provider [Member]
Finite-Lived Intangible Assets [Line Items]
Business acquisition, Intangible assets	100,000
Customer Relationships [Member] | Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, estimated useful life			5 years
Customer Relationships [Member] | Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, estimated useful life			8 years
Customer Relationships [Member] | Ionia Corp [Member]
Finite-Lived Intangible Assets [Line Items]
Business acquisition, Intangible assets	1,340,000
Customer Relationships [Member] | BBA, Inc., "Meldium" [Member]
Finite-Lived Intangible Assets [Line Items]
Business acquisition, Intangible assets	100,000
Completed Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Asset purchased				11,500,000
Estimated useful life period	5 years
Additional payment incurred for software			500,000
Completed Technology [Member] | Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, estimated useful life			3 years
Completed Technology [Member] | Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, estimated useful life			8 years
Completed Technology [Member] | BBA, Inc., "Meldium" [Member]
Finite-Lived Intangible Assets [Line Items]
Business acquisition, Intangible assets	1,580,000
Completed Technology [Member] | San Francisco, California-based Collaboration Software Provider [Member]
Finite-Lived Intangible Assets [Line Items]
Business acquisition, Intangible assets	$960,000

Goodwill_and_Intangible_Assets3

Goodwill and Intangible Assets - Intangible Assets (Detail) (USD $)	3 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	33,488	32,473
Accumulated Amortization	14,686	13,490
Net Carrying Amount	18,802	18,983
Trade Name and Trademark [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	806	806
Accumulated Amortization	713	682
Net Carrying Amount	93	124
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	5,229	5,229
Accumulated Amortization	2,737	2,546
Net Carrying Amount	2,492	2,683
Customer Backlog [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	120	120
Accumulated Amortization	120	120
Domain Names [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	904	907
Accumulated Amortization	547	507
Net Carrying Amount	357	400
Software [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	299	299
Accumulated Amortization	299	299
Completed Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	16,903	16,903
Accumulated Amortization	4,673	3,981
Net Carrying Amount	12,230	12,922
Technology and Know-how [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	3,176	3,176
Accumulated Amortization	3,176	3,176
Documented Know-how [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	280	280
Accumulated Amortization	75	57
Net Carrying Amount	205	223
Non-compete Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	162	162
Accumulated Amortization	82	71
Net Carrying Amount	80	91
Internally Developed Software [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	5,609	4,591
Accumulated Amortization	2,264	2,051
Net Carrying Amount	3,345	2,540
Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, estimated useful life	4 months
Minimum [Member] | Trade Name and Trademark [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, estimated useful life		1 year
Minimum [Member] | Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, estimated useful life		5 years
Minimum [Member] | Completed Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, estimated useful life		3 years
Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, estimated useful life	8 years
Maximum [Member] | Trade Name and Trademark [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, estimated useful life		5 years
Maximum [Member] | Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, estimated useful life		8 years
Maximum [Member] | Customer Backlog [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, estimated useful life		4 months
Maximum [Member] | Domain Names [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, estimated useful life		5 years
Maximum [Member] | Software [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, estimated useful life		4 years
Maximum [Member] | Completed Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, estimated useful life		8 years
Maximum [Member] | Technology and Know-how [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, estimated useful life		3 years
Maximum [Member] | Documented Know-how [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, estimated useful life		4 years
Maximum [Member] | Non-compete Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, estimated useful life		5 years
Maximum [Member] | Internally Developed Software [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, estimated useful life		3 years

Goodwill_and_Intangible_Assets4

Goodwill and Intangible Assets - Future Estimated Amortization Expense (Detail) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Intangible Liability Disclosure [Abstract]
2015 (Nine months ending December 31)	$4,003
2016	4,948
2017	4,607
2018	3,612
2019	1,096
Thereafter	536
Net Carrying Amount	$18,802	$18,983

Accrued_Liabilities_Summary_of

Accrued Liabilities - Summary of Accrued Liabilities (Detail) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Payables and Accruals [Abstract]
Marketing programs	$7,031	$7,626
Payroll and payroll related	8,335	14,873
Professional fees	2,566	1,961
Legal settlements	8,300
Other accrued liabilities	7,277	5,022
Total accrued liabilities	$33,509	$29,482

Income_Taxes_Additional_Inform

Income Taxes - Additional Information (Detail) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Provision for income taxes	$63,000	$677,000
Effective tax rate	15.00%	40.00%
U.S. federal statutory rate	35.00%	35.00%
Uncertain tax positions	738,000		652,000
Interest expense	$2,000	$1,000

Common_Stock_and_Equity_Additi

Common Stock and Equity - Additional Information (Detail) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Oct. 20, 2014	Aug. 13, 2013	Feb. 28, 2013
Equity [Abstract]
Share repurchase program			$75,000,000	$50,000,000	$25,000,000
Number of shares repurchased	93,400	148,500
Average price of repurchased shares	$54.22	$33.05
Total cost of shares repurchased	5,100,000	4,900,000
Amount available under share repurchase program	$69,400,000

Stock_Incentive_Plan_Additiona

Stock Incentive Plan - Additional Information (Detail) (USD $)	0 Months Ended	3 Months Ended	12 Months Ended	1 Months Ended
In Millions, except Share data, unless otherwise specified	22-May-14	Mar. 31, 2015	Dec. 31, 2014	31-May-14	Aug. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Increase in shares available to grant	1,200,000
Shares available for grant		2,108,371
Requisite service period of compensation expense		4 years
Fair value of common stock		$55.99	$49.34
Weighted average grant date fair value			$21.78
Stock options granted		0
Unrecognized share-based compensation cost		$36.80
Share-based compensation cost not yet recognized period for recognition		2 years
Market-based Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of restricted stock units, granted				71,000	74,000
Market-based Restricted Stock Units [Member] | Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Requisite service period of compensation expense				2 years	2 years
Total shareholder return shares, percentage				0.00%	0.00%
Market-based Restricted Stock Units [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Requisite service period of compensation expense				3 years	3 years
Total shareholder return shares, percentage				200.00%	200.00%
Total shareholder return shares				142,000	148,000
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Period of options vested		4 years
Period of expiration		10 years
Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of restricted stock units, granted		242,000
Number of shares forfeited		138,000
Restricted Stock Units [Member] | Service-based Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Period of options vested		3 years
Restricted Stock Units [Member] | Market-based Restricted Stock Units [Member] | Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Period of options vested		2 years
Restricted Stock Units [Member] | Market-based Restricted Stock Units [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Period of options vested		3 years
Restricted Stock Units [Member] | Time-based Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Requisite service period of compensation expense		3 years
Number of restricted stock units, granted		242,126
TSR Units [Member] | May 2014 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares forfeited		25,000
Number of shares grant		46,000
TSR Units [Member] | August 2013 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares forfeited		20,000
Number of shares grant		54,000

Stock_Incentive_Plan_Summary_o

Stock Incentive Plan - Summary of Assumptions to Apply Black-Scholes Option-Pricing Model (Detail)	3 Months Ended
	Mar. 31, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Expected dividend yield	0.00%
Risk-free interest rate	1.48%
Expected option life (years)	6 years 3 months
Expected volatility	55.00%

Stock_Incentive_Plan_Summary_o1

Stock Incentive Plan - Summary of Assumptions to Apply Black-Scholes Option-Pricing Model (Parenthetical) (Detail)	3 Months Ended
	Mar. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock options granted	0

Stock_Incentive_Plan_Summary_o2

Stock Incentive Plan - Summary of Stock Option Activity Including Performance-based Options (Detail) (USD $)	3 Months Ended	12 Months Ended
In Thousands, except Share data, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Number of shares, Outstanding, Beginning balance	1,407,000
Number of shares, Granted	0
Number of shares, Exercised	-261,000
Number of shares, Forfeited	-12,000
Number of shares, Outstanding, Ending balance	1,134,000	1,407,000
Number of shares, Exercisable, Ending balance	874,000	957,000
Weighted Average Exercise Price, Outstanding, Beginning balance	$30.02
Weighted Average Exercise Price, Granted	$0
Weighted Average Exercise Price, Exercised	$33.93
Weighted Average Exercise Price, Forfeited	$38.75
Weighted Average Exercise Price, Outstanding, Ending balance	$29.02	$30.02
Weighted Average Exercise Price, Exercisable, Ending balance	$28.62	$28.24
Weighted Average Remaining Contractual Term (Years), Outstanding	6 years	6 years 2 months 12 days
Weighted Average Remaining Contractual Term (Years), Exercisable	5 years 6 months	5 years 8 months 12 days
Aggregate Intrinsic Value, Outstanding, Beginning balance	$27,186
Aggregate Intrinsic Value, Exercised	5,023
Aggregate Intrinsic Value, Outstanding, Ending balance	30,576	27,186
Aggregate Intrinsic Value, Exercisable, Ending balance	$23,919	$20,190

Stock_Incentive_Plan_Summary_o3

Stock Incentive Plan - Summary of Assumptions Used in Monte Carlo Simulation Model (Detail)	3 Months Ended	1 Months Ended
	Mar. 31, 2014	31-May-14	Aug. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk-free interest rate	1.48%
Volatility	55.00%
Market-based Restricted Stock Units [Member] | TSR Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk-free interest rate		0.78%	0.62%
Volatility		54.00%	54.00%

Stock_Incentive_Plan_Schedule_

Stock Incentive Plan - Schedule of Restricted Stock Unit Activity Including Performance-based Restricted Stock Units (Detail) (Restricted Stock Units [Member], USD $)	3 Months Ended
	Mar. 31, 2015
Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares Underlying Restricted Stock Units, Unvested, Beginning balance	1,279,000
Number of shares Underlying Restricted Stock Units, granted	242,000
Number of shares Underlying Restricted Stock Units, vested	-112,000
Number of shares Underlying Restricted Stock Units, forfeited	-138,000
Number of shares Underlying Restricted Stock Units, Unvested, Ending balance	1,271,000
Weighted Average Grant Date Fair Value, Beginning balance	$37.42
Weighted Average Grant Date Fair Value, granted	$48.69
Weighted Average Grant Date Fair Value, vested	$33.47
Weighted Average Grant Date Fair Value, forfeited	$42.36
Weighted Average Grant Date Fair Value, Ending balance	$39.38

Stock_Incentive_Plan_Schedule_1

Stock Incentive Plan - Schedule of Stock Based Compensation Allocated to Expense (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock based compensation expense	$4,853	$5,438
Cost of Revenue [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock based compensation expense	354	235
Research and Development [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock based compensation expense	1,328	776
Sales and Marketing [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock based compensation expense	2,030	2,061
General and Administrative [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock based compensation expense	$1,141	$2,366

Commitments_and_Contingencies_1

Commitments and Contingencies - Additional Information (Detail)	0 Months Ended	3 Months Ended		0 Months Ended		12 Months Ended
	Apr. 24, 2015	Mar. 31, 2015	Mar. 31, 2014	Apr. 24, 2015	Apr. 24, 2015	Dec. 31, 2014	Mar. 31, 2015	Mar. 31, 2015	Dec. 31, 2014
	USD ($)	USD ($)	USD ($)	Subsequent Event [Member]	Subsequent Event [Member]	Massachusetts [Member]	Bangalore [Member]	Bangalore [Member]	California [Member]
				USD ($)	USD ($)	USD ($)	USD ($)	INR	USD ($)
						Lease
Commitments And Guarantees [Line Items]
Minimum lease payments		$101,367,000				$47,000,000	$569,000	35,600,000	$2,400,000
Lease agreement security deposit						3,300,000	48,500	3,000,000	41,000
Excess cost						7,000,000
Number of times lease may be extended						2
Additional lease term						5 years
Rent expense under all leases		1,900,000	1,700,000
Hosting fees incurred		1,500,000	1,100,000
Legal settlement expense	3,600,000	3,600,000
Settlement agreement one time fee				8,300,000
Settlement agreement fee expected to be reimbursed					$4,700,000

Commitments_and_Contingencies_2

Commitments and Contingencies - Schedule of Minimum Future Lease Payments Receivable (Detail) (USD $)	Mar. 31, 2015
In Thousands, unless otherwise specified
Leases [Abstract]
2015 (Nine months ending December 31)	$7,893
2016	9,945
2017	10,291
2018	10,324
2019	9,786
Thereafter	53,128
Total minimum lease payments	$101,367

Accumulated_Other_Comprehensiv2

Accumulated Other Comprehensive Loss - Additional Information (Detail) (USD $)	3 Months Ended
	Mar. 31, 2015
Statement of Comprehensive Income [Abstract]
Material reclassifications	$0

Accumulated_Other_Comprehensiv3

Accumulated Other Comprehensive Loss - Schedule of Changes in Accumulated Other Comprehensive Income (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at December 31, 2014	($3,117)
Other comprehensive income (loss)	-1,418	-114
Balance at March 31, 2015	-4,535
Unrealized Gain (Loss) on Marketable Securities [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at December 31, 2014	-82
Other comprehensive income (loss)	114
Balance at March 31, 2015	32
Foreign Currency Translation Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at December 31, 2014	-3,035
Other comprehensive income (loss)	-1,532
Balance at March 31, 2015	($4,567)

Credit_Facility_Additional_Inf

Credit Facility - Additional Information (Detail) (USD $)	0 Months Ended	3 Months Ended
	Feb. 18, 2015	Mar. 31, 2015
Line of Credit Facility [Line Items]
Maximum amount of borrowing	$100,000,000
Line of credit facility, Initiation date	18-Feb-15
Line of credit facility, expiration date	18-Feb-20
Additional secured revolving credit facility subject to further commitment	50,000,000
Credit facility amount drawn		0
Non U S Dollar [Member]
Line of Credit Facility [Line Items]
Maximum amount of borrowing		20,000,000
Minimum [Member]
Line of Credit Facility [Line Items]
Credit facility commitment fees		0.20%
Minimum [Member] | Eurodollar Base Rate [Member]
Line of Credit Facility [Line Items]
Line of credit base rate borrowings		1.50%
Minimum [Member] | Base Rate Borrowings [Member]
Line of Credit Facility [Line Items]
Line of credit base rate borrowings		0.50%
Minimum [Member] | Non U S Dollar [Member]
Line of Credit Facility [Line Items]
Line of credit base rate borrowings		1.50%
Maximum [Member]
Line of Credit Facility [Line Items]
Credit facility commitment fees		0.30%
Maximum [Member] | Eurodollar Base Rate [Member]
Line of Credit Facility [Line Items]
Line of credit base rate borrowings		2.00%
Maximum [Member] | Base Rate Borrowings [Member]
Line of Credit Facility [Line Items]
Line of credit base rate borrowings		1.00%
Maximum [Member] | Non U S Dollar [Member]
Line of Credit Facility [Line Items]
Line of credit base rate borrowings		2.00%