LogMeIn (LOGM) 10-Q 30 Apr 14 2014 Q1 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	3 Months Ended
	Mar. 31, 2014	Apr. 24, 2014
Document And Entity Information [Abstract]	'	'
Document Type	'10-Q	'
Amendment Flag	'false	'
Document Period End Date	31-Mar-14	'
Document Fiscal Year Focus	'2014	'
Document Fiscal Period Focus	'Q1	'
Entity Registrant Name	'LogMeIn, Inc.	'
Entity Central Index Key	'0001420302	'
Current Fiscal Year End Date	'--12-31	'
Entity Filer Category	'Accelerated Filer	'
Entity Common Stock, Shares Outstanding	'	24,280,525

Condensed_Consolidated_Balance

Condensed Consolidated Balance Sheets (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Current assets:	'	'
Cash and cash equivalents	$103,736	$89,257
Marketable securities	100,255	100,299
Accounts receivable (net of allowance for doubtful accounts of $269 and $294 as of December 31, 2013 and March 31, 2014, respectively)	11,681	12,957
Prepaid expenses and other current assets	7,446	6,531
Deferred income tax assets	3,054	3,053
Total current assets	226,172	212,097
Property and equipment, net	13,319	13,198
Restricted cash	3,904	3,902
Intangibles, net	18,136	16,886
Goodwill	24,315	18,712
Other assets	5,302	5,348
Deferred income tax assets	9,218	9,470
Total assets	300,366	279,613
Current liabilities:	'	'
Accounts payable	5,086	6,390
Accrued liabilities	16,143	20,110
Deferred revenue, current portion	102,567	82,496
Total current liabilities	123,796	108,996
Deferred revenue, net of current portion	1,991	2,667
Other long-term liabilities	948	611
Total liabilities	126,735	112,274
Commitments and contingencies (Note 10)	'	'
Preferred stock, $0.01 par value - 5,000,000 shares authorized, 0 shares outstanding as of December 31, 2013 and March 31, 2014	'	'
Equity:	'	'
Common stock, $0.01 par value - 75,000,000 shares authorized as of December 31, 2013 and March 31, 2014; 25,371,844 and 25,697,518 shares issued as of December 31, 2013 and March 31, 2014, respectively; 24,103,201 and 24,280,375 outstanding as of December 31, 2013 and March 31, 2014, respectively	258	254
Additional paid-in capital	210,542	200,235
Accumulated deficit	-435	-1,439
Accumulated other comprehensive loss	-1,300	-1,186
Treasury stock, at cost - 1,268,643 and 1,417,143 shares as of December 31, 2013 and March 31, 2014, respectively	-35,434	-30,525
Total equity	173,631	167,339
Total liabilities and equity	$300,366	$279,613

Condensed_Consolidated_Balance1

Condensed Consolidated Balance Sheets (Parenthetical) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, except Share data, unless otherwise specified
Statement Of Financial Position [Abstract]	'	'
Allowance for doubtful accounts	$294	$269
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	25,697,518	25,371,844
Common stock, shares outstanding	24,280,375	24,103,201
Treasury stock, shares	1,417,143	1,268,643

Condensed_Consolidated_Stateme

Condensed Consolidated Statements of Operations (USD $)	3 Months Ended
In Thousands, except Share data, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Income Statement [Abstract]	'	'
Revenue	$49,020	$37,437
Cost of revenue	6,120	4,409
Gross profit	42,900	33,028
Operating expenses	'	'
Research and development	6,712	7,391
Sales and marketing	27,710	20,568
General and administrative	6,677	11,520
Amortization of acquired intangibles	203	179
Total operating expenses	41,302	39,658
(Loss) income from operations	1,598	-6,630
Interest income, net	111	165
Other income (expense)	-28	652
(Loss) income before income taxes	1,681	-5,813
Benefit from (provision for) income taxes	-677	6
Net (loss) income	$1,004	($5,807)
Net (loss) income per share:	'	'
Basic	$0.04	($0.24)
Diluted	$0.04	($0.24)
Weighted average shares outstanding:	'	'
Basic	24,123,291	24,704,343
Diluted	24,749,511	24,704,343

Condensed_Consolidated_Stateme1

Condensed Consolidated Statements of Comprehensive (Loss) Income (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Statement Of Income And Comprehensive Income [Abstract]	'	'
Net (loss) income	$1,004	($5,807)
Other comprehensive loss:	'	'
Net unrealized (losses) gains on marketable securities, net of tax	21	-19
Net translation losses	-135	-1,514
Total other comprehensive loss	-114	-1,533
Comprehensive (loss) income	$890	($7,340)

Condensed_Consolidated_Stateme2

Condensed Consolidated Statements of Cash Flows (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Cash flows from operating activities	'	'
Net (loss) income	$1,004	($5,807)
Adjustments to reconcile net (loss) income to net cash provided by operating activities	'	'
Depreciation and amortization	2,472	1,704
Amortization of premium on investments	63	14
Provision for bad debts	34	28
Provision for deferred income taxes	265	56
Income tax benefit from the exercise of stock options	'	-25
Stock-based compensation	5,438	5,165
Gain on disposal of equipment	-2	-1
Changes in assets and liabilities:	'	'
Accounts receivable	1,519	1,273
Prepaid expenses and other current assets	-916	-2,853
Other assets	90	-1,882
Accounts payable	-1,008	-1,128
Accrued liabilities	-4,277	5,347
Deferred revenue	19,358	4,413
Other long-term liabilities	333	-189
Net cash provided by operating activities	24,373	6,115
Cash flows from investing activities	'	'
Purchases of marketable securities	-4,985	-50,378
Proceeds from sale or disposal of marketable securities	5,000	50,000
Purchases of property and equipment	-1,780	-2,155
Intangible asset additions	-506	-541
Cash paid for acquisition, net of cash acquired	-7,434	'
Net cash used in investing activities	-9,705	-3,074
Cash flows from financing activities	'	'
Proceeds from issuance of common stock upon option exercises	5,773	74
Income tax benefit from the exercise of stock options	'	25
Common stock withheld to satisfy income tax withholdings for restricted stock unit vesting	-901	-236
Purchase of treasury stock	-4,909	-8,980
Net cash used in financing activities	-37	-9,117
Effect of exchange rate changes on cash and cash equivalents and restricted cash	-152	-1,109
Net (decrease) increase in cash and cash equivalents	14,479	-7,185
Cash and cash equivalents, beginning of period	89,257	111,932
Cash and cash equivalents, end of period	103,736	104,747
Supplemental disclosure of cash flow information	'	'
Cash paid for interest	1	'
Cash paid for income taxes	119	4,060
Non-cash investing and financing activities	'	'
Purchases of property and equipment included in accounts payable and accrued liabilities	1,349	1,584
Fair value of contingent consideration in connection with acquisition included in accrued liabilities and other long term liabilities	'	$169

Nature_of_the_Business

Nature of the Business	3 Months Ended
	Mar. 31, 2014
Accounting Policies [Abstract]	'
Nature of the Business	'
	1. Nature of the Business
	LogMeIn, Inc. (the “Company”) provides a portfolio of secure, easy-to-use cloud-based offerings aimed at addressing the evolving needs of businesses, their employees and their customers in today’s universally connected world. 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®, Xively™ and RemotelyAnywhere®. The Company is headquartered in Boston, Massachusetts with wholly-owned subsidiaries in Hungary, The Netherlands, Australia, the United Kingdom, Brazil, Japan, Ireland, and India.

Summary_of_Significant_Account

Summary of Significant Accounting Policies	3 Months Ended
	Mar. 31, 2014
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 March 10, 2014. The unaudited interim condensed consolidated financial statements have been prepared on the same basis as the audited condensed consolidated 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 income 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, 2013 and March 31, 2014, marketable securities consisted of U.S. government agency securities that have remaining maturities within two years and have an aggregate amortized cost of $100.3 million and $100.2 million and an aggregate fair value of $100.3 million and $100.3 million, including $67,000 and $94,000 of unrealized gains and $28,000 and $22,000 of unrealized losses, respectively.
	Revenue Recognition — The Company derives revenue primarily from subscription fees related to its LogMeIn premium services and 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. 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.
	The Company currently only offers free versions of its iPhone, iPad and Android software products. The Company had formerly sold these iPhone, iPad and Android software products as perpetually licensed software, the revenue from which was recognized when there was persuasive evidence of an arrangement, the product had been provided to the customer, the collection of the fee was probable, and the amount of fees to be paid by the customer was fixed or determinable.
	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, 2013, no customers accounted for 10% or more of accounts receivable and no customers accounted for 10% or more of revenue for the three months ended March 31, 2013 or 2014. As of March 31, 2014, two customers each accounted for 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 annual impairment test of goodwill on the last day of its fiscal year and 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. Through March 31, 2014, no impairments have occurred.
	Long-Lived Assets and Intangible Assets — The Company records intangible assets at their estimated fair values at the date of acquisition. Intangible assets are 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. The Company’s intangible assets have estimated useful lives which range from one to seven 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. Through March 31, 2014, no impairments have occurred.
	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 gains of approximately $652,000 for the three months ended March 31, 2013 and foreign currency losses of approximately $28,000 for the three months ended March 31, 2014.
	Stock-Based Compensation — Stock-based compensation is measured based upon the grant date fair value and recognized as an expense on a straight-line basis in the financial statements over the vesting period of the award for those awards expected to vest. The Company uses the Black-Scholes option pricing model to estimate the grant date fair value of stock awards. 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 or positions 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. Through December 31, 2013 and March 31, 2014, the Company has provided a liability for approximately $304,000 and $383,000 for uncertain tax positions, respectively. 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 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,
		2013			2014
	Revenue:
	United States	$	24,788		$	32,405
	United Kingdom		3,463			4,407
	International - all other		9,186			12,208
	Total revenue	$	37,437		$	49,020
	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, 2014, the Company has not experienced any losses related to these indemnification obligations.
	In November 2012, the Company filed suit against Pragmatus Telecom LLC (“Pragmatus”), seeking declaratory judgment after certain of the Company’s customers received letters from Pragmatus claiming that their use of certain LogMeIn services infringed upon three patents allegedly owned by Pragmatus. On March 29, 2013, the Company and Pragmatus entered into a License Agreement, which granted the Company a fully-paid license covering the patents at issue. The Company paid Pragmatus a one-time licensing fee in April 2013, after a portion of the fee was reimbursed in March 2013 from a designated escrow arrangement associated with a prior acquisition. The Company recorded approximately $1.2 million of expense related to this matter in general and administrative expenses in March 2013. As a result, the Company’s declaratory judgment action against Pragmatus was dismissed by the court on May 3, 2013.
	Net (Loss) Income Per Share — Basic net (loss) income per share is computed by dividing net (loss) income by the weighted average number of common shares outstanding for the period. Diluted net (loss) income per share is computed by dividing net (loss) 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. For the three months ended March 31, 2013, the Company incurred a net loss and therefore, the effect of the Company’s outstanding common stock equivalents were not included in the calculation of diluted loss per share as they were anti-dilutive. Accordingly, basic and dilutive net loss per share for the period were identical.
	The Company excluded the following options to purchase common shares and restricted stock units from the computation of diluted net (loss) income per share either because they had an anti-dilutive impact or because the Company had a net loss in the period (in thousands):
		Three Months Ended March 31,
		2013			2014
	Options to purchase common shares		2,886			933
	Restricted stock units		863			173
	Total options and restricted stock units		3,749			1,106
	Basic and diluted net income per share was calculated as follows (in thousands, except share and per share data):
		Three Months Ended
		March 31, 2013
	Basic and diluted net loss per share:
	Net loss	$	(5,807	)
	Weighted average common shares outstanding		24,704,343
	Basic and diluted net loss per share	$	(0.24	)
		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

Fair_Value_of_Financial_Instru

Fair Value of Financial Instruments	3 Months Ended
	Mar. 31, 2014
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 reflect the Company’s assumptions about the assumptions that market participants would use in pricing the asset or liability.
	The following table summarizes the basis used to measure certain of the Company’s financial assets that are carried at fair value (in thousands):
		Basis of Fair Value Measurements
		Balance		Quoted Prices		Significant		Significant
				in Active		Other		Unobservable
				Markets for		Observable		Inputs
				Identical		Inputs		(Level 3)
				Items		(Level 2)
				(Level 1)
	Balance at December 31, 2013
	Cash equivalents — money market funds	$	28,210	$	28,210	$	—	$	—
	Cash equivalents — bank deposits		5,001		—		5,001		—
	Short-term marketable securities — U.S. government agency securities		100,299		75,288		25,011		—
	Balance at March 31, 2014
	Cash equivalents - money market funds		29,516		29,516		—		—
	Cash equivalents - bank deposits		5,001		—		5,001		—
	Short-term marketable securities - U.S. government agency securities		100,255		80,246		20,009		—
	Bank deposits 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.

Acquisitions

Acquisitions	3 Months Ended
	Mar. 31, 2014
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 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 calculate 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		(172	)
	Customer backlog		120
	Trade name and trademark		10
	Customer relationships		1,340
	Documented know-how		280
	Goodwill		5,603
	Total purchase price	$	7,500
	The pro forma results of operations for the quarter ended March 31, 2013 and 2014 assuming the Company had acquired Ionia on January 1, 2013, do not differ materially from those reported in the Company’s condensed consolidated statement of income for that quarter.
	The asset purchase agreement included a contingent, retention-based bonus program provision requiring the Company to make additional payments to employees, including former Ionia owners 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 acquired is not deductible for income tax purposes.
	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, 2014
Goodwill And Intangible Assets Disclosure [Abstract]	'
Goodwill and Intangible Assets	'
	5. Goodwill and Intangible Assets
	The changes in the carry amounts of goodwill for three months ended March 31, 2014 are due to the addition of goodwill resulting from the acquisition of Ionia (See Note 4 to the Condensed Consolidated Financial Statements).
	Changes in goodwill for the three months ended March 31, 2014, are as follows (in thousands):
	Balance, December 31, 2013	$	18,712
	Goodwill related to the acquisition of Ionia		5,603
	Balance, March 31, 2014	$	24,315
	Intangible assets consist of the following (in thousands):
				December 31, 2013						March 31, 2014
		Estimated		Gross		Accumulated		Net		Gross		Accumulated		Net Carrying
		Useful Life		Carrying		Amortization		Carrying		Carrying		Amortization		Amount
				Amount				Amount		Amount
	Trademark		1-5 years	$	666	$	666	$	—	$	676	$	667	$	9
	Customer base		5-7 years		3,789		1,901		1,888		5,129		2,029		3,100
	Customer backlog		4 months		—		—		—		120		23		97
	Domain names		5 years		894		341		553		907		383		524
	Software		4 years		299		299		—		299		299		—
	Technology		3-6 years		13,963		1,835		12,128		13,963		2,204		11,759
	Technology and know-how		3 years		3,176		2,597		579		3,176		2,861		315
	Documented know-how		4 years		—		—		—		280		4		276
	Non-compete agreements		5 years		162		34		128		162		43		119
	Internally developed software		3 years		2,485		875		1,610		2,976		1,039		1,937
				$	25,434	$	8,548	$	16,886	$	27,688	$	9,552	$	18,136
	As a result of the acquisition of Ionia, the Company capitalized $120,000 of customer back log, $280,000 of documented know-how, $10,000 of trade names, and $1.3 million of customer relationships as intangible assets. 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 seven years.
	On November 6, 2013, the Company purchased a software asset for $11.5 million. This software asset is recorded as an intangible asset and classified as technology and will be amortized using the straight-line method over an estimated useful life of five years, beginning in February 2014 when the product was made available to customers.
	The Company capitalized $239,000 and $491,000 during the three months ended March 31, 2013 and 2014, 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 paid $15,000 to acquire domain names in the three months ended March 31, 2014.
	The Company is amortizing its intangible assets over the estimated lives noted above. Amortization expense for intangible assets was $612,000 and $1.0 million for the three months ended March 31, 2013 and 2014, 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, 2014 (in thousands):
	Amortization Expense (Years Ending December 31)	Amount
	2014 (Nine months ending December 31)		3,724
	2015		4,264
	2016		3,718
	2017		3,160
	2018		2,780
	Thereafter		490
	Total	$	18,136

Accrued_Liabilities

Accrued Liabilities	3 Months Ended
	Mar. 31, 2014
Payables And Accruals [Abstract]	'
Accrued Liabilities	'
	6. Accrued Liabilities
	Accrued liabilities consisted of the following (in thousands):
		December 31,		March 31,
		2013		2014
	Marketing programs	$	4,631	$	4,868
	Payroll and payroll related		9,719		5,100
	Professional fees		1,064		1,141
	Other accrued liabilities		4,696		5,034
	Total accrued liabilities	$	20,110	$	16,143

Income_Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2014
Income Tax Disclosure [Abstract]	'
Income Taxes	'
	7. Income Taxes
	The Company recorded a benefit for federal, state and foreign income taxes of approximately $6,000 and a provision of approximately $677,000 for the three months ended March 31, 2013 and 2014, respectively. The Company’s effective tax rate increased for the three months ended March 31, 2014 as a result of the Company incurring approximately $1.7 million of profit before tax as compared to an approximate $5.8 million loss before tax for the three months ended March 31, 2013.
	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. As of December 31, 2013 and March 31, 2014, the Company maintained a full valuation allowance against the deferred tax assets of its Hungarian subsidiary. This entity has historical losses and the Company concluded it was not more likely than not that these deferred tax assets are realizable. 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 since inception are open to examination by federal, state, and foreign tax authorities. The Company has recorded a liability related to uncertain tax provisions of approximately $304,000 and $383,000 as of December 31, 2013 and March 31, 2014, respectively. The Company’s policy is to record estimated interest and penalty related to the underpayment of income taxes or unrecognized tax benefits as a component of its income tax provision. The Company did not recognize any interest or penalties in its statement of operations during the three months ended March 31, 2013. The Company recognized approximately $5,000 of interest expense for the three months ended March 31, 2014.

Common_Stock_and_Equity

Common Stock and Equity	3 Months Ended
	Mar. 31, 2014
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. 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, 2013 and 2014, the Company repurchased 501,822 and 148,500 shares of its common stock at an average price of $17.89 and $33.05 per share for a total cost of approximately $9.0 million and $4.9 million, respectively. At March 31, 2014, approximately $31.0 million remained available under the Company’s share repurchase program.

Stock_Incentive_Plan

Stock Incentive Plan	3 Months Ended
	Mar. 31, 2014
Disclosure Of Compensation Related Costs Sharebased 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 23, 2013, the Company’s stockholders approved an amendment to the 2009 Plan that increased the shares available to grant under the plan by 1,400,000 shares. There were 1,484,892 shares available for grant under the 2009 Plan as of March 31, 2014.
	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 award, which is generally four years.
	The Company used the following assumptions to apply the Black-Scholes option-pricing model:
		Three Months Ended March 31,
		2013		2014
	Expected dividend yield	0.00%		0.00%
	Risk-free interest rate	0.87% - 0.88%		1.48%
	Expected option life (years)	6.25		6.25
	Expected volatility	55%		55%
	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, 2014		2,389		$	26.85		6.4	$	22,330
	Granted		35			41.03
	Exercised		(270	)		21.37			$	5,495
	Forfeited		(46	)		36.38
	Outstanding at March 31, 2014		2,108		$	27.58		6.4	$	36,485
	Exercisable at December 31, 2013		1,451		$	23.45		5.4	$	17,855
	Exercisable at March 31, 2014		1,495		$	25.56		5.7	$	28,889
	The aggregate intrinsic value was calculated based on the positive differences between the fair value of the Company’s common stock of $33.55 on December 31, 2013 and $44.89 per share on March 31, 2014, or at time of exercise, and the exercise price of the options.
	The weighted average grant date fair value of stock options issued was $11.60 per share for the year ended December 31, 2013, and $21.78 for the three months ended March 31, 2014.
	During the three months ended March 31, 2014, the Company granted 174,286 restricted stock units, respectively, containing time-based vesting conditions which generally lapse over a three year period.
	In August 2013, the Company granted 74,000 restricted stock units containing market-based vesting conditions which vest upon the achievement of a total shareholder return target measured over the performance period which ranges from two to three years (“TSR units”). The number of TSR units that will vest can range from 0% of the target shares to 200% of the target shares, or 148,000, and is also based upon continued employment of the participant over the vesting period which ranges from two to three years. The TSR units 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 vesting term of the restricted stock unit.
	The assumptions used in the Monte Carlo simulation model include (but are not limited to) the following:
		Year
		Ended
		December 31,
		2013
	Risk-free interest rate		0.62	%
	Volatility		54	%
	Compensation cost is recognized on a straight-line basis over the requisite service period. At March 31, 2014, all of the TSR units granted in August 2013 remain outstanding.
	The following table summarizes restricted stock unit activity (shares in thousands):
		Number of shares			Weighted Average
		Underlying Restricted			Grant Date Fair
		Stock Units			Value
	Unvested as of January 1, 2014		1,192		$	28.47
	Restricted stock units granted		174			41.03
	Restricted stock units vested		(77	)		26.98
	Restricted stock units forfeited		(49	)		29.43
	Unvested as of March 31, 2014		1,240		$	30.29
	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,
		2013			2014
	Cost of revenue	$	203		$	235
	Research and development		1,017			776
	Sales and marketing		2,081			2,061
	General and administrative		1,864			2,366
		$	5,165		$	5,438
	As of March 31, 2014, there was approximately $36.6 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 2.1 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, 2014
Commitments And Contingencies Disclosure [Abstract]	'
Commitments and Contingencies	'
	10. Commitments and Contingencies
	Operating Leases — The Company has operating lease agreements for offices in Massachusetts, Hungary, Australia, the United Kingdom, Ireland and India that expire through 2023.
	In April 2012, the Company entered into a lease for a new corporate headquarters located in Boston, Massachusetts. The landlord was obligated to rehabilitate the existing building and the lease term began in April 2013 and extends through July 2023. The aggregate amount of minimum lease payments to be made over the term of the lease is approximately $41.3 million. Pursuant to the terms of the lease, the landlord was responsible for making certain improvements to the leased space up to an agreed upon cost to the landlord. Any excess costs for these improvements were billed by the landlord to the Company as additional rent. These costs totaled $5.6 million, all of which were paid as of March 31, 2014, and have been classified in Other Assets and are being amortized over the lease term. The lease required a security deposit of approximately $3.3 million in the form of an irrevocable standby letter of credit which is collateralized by a bank deposit in the amount of approximately $3.5 million or 105 percent of the security deposit. The security deposit is classified as restricted cash. The lease includes an option to extend the original term of the lease for two successive five year periods.
	In September 2013, the Company entered into a lease for new office space in Sydney, Australia. The term of the new office space began in December 2013 and extends through May 2017. The aggregate amount of minimum lease payments to be made over the term of the lease is approximately $658,000 (AUD 711,000). The lease agreement required a bank guarantee of approximately $114,000 (AUD 123,000). The bank guarantee is classified as restricted cash.
	In April 2014, the Company amended its current lease for its Budapest, Hungary office space to provide for an expansion of leased space and to extend the term of the lease. The term of the amended lease will begin in July 2014 and extend through June 2019. The aggregate amount of minimum lease payments to be made over the term of the lease is approximately $7.8 million (EUR 5.7 million). The amended lease agreement required a bank guarantee of approximately $487,000 (EUR 354,000). The bank guarantee is classified as restricted cash.
	Rent expense under all leases was approximately $1.1 million and $1.7 million for the three months ended March 31, 2013 and 2014, 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 for both the three months ended March 31, 2013 and 2014.
	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, 2014 (in thousands):
	Years Ending December 31
	2014 (Nine months ending December 31)		$	7,299
	2015			6,943
	2016			6,300
	2017			5,805
	2018			6,126
	Thereafter			21,564
	Total minimum lease payments		$	54,037
	-1	Excluded from the table above is $383,000 related to uncertain tax positions as the Company is uncertain as to when a cash settlement for these liabilities will occur.
	Litigation — On September 8, 2010, 01 Communique Laboratory, Inc., or 01, filed a complaint that named the Company as a defendant in a lawsuit in the U.S. District Court for the Eastern District of Virginia (Civil Action No. 1:10cv1007) alleging that the Company infringed U.S. Patent No. 6,928,479, or the ‘479 Patent, which is owned by 01 and has claims directed to a particular application or system for providing a private communication portal from one computer to a second computer. The complaint sought damages in an unspecified amount and injunctive relief. On April 1, 2011, the U.S. District Court for the Eastern District of Virginia granted the Company’s motion for summary judgment of non-infringement. The court issued a written order regarding this decision on May 4, 2011. On May 13, 2011, 01 filed a notice of appeal appealing the court’s ruling granting summary judgment. On July 31, 2012, the U.S. Court of Appeals for the Federal Circuit vacated the lower court’s summary judgment of non-infringement ruling and remanded the case back to the U.S. District Court for the Eastern District of Virginia with revised claim construction. The trial commenced on March 18, 2013 and on March 26, 2013, a jury in the Eastern District of Virginia found that the Company’s products do not infringe the ‘479 Patent as previously asserted by 01. The court issued a written order regarding this decision on April 2, 2013. On June 26, 2013, the court issued a written opinion denying all pending post-trial motions, thereby preserving the jury’s non-infringement verdict. On June 26, 2013, 01 filed a notice of appeal seeking to appeal the jury’s non-infringement verdict and on July 18, 2013, the Company filed a notice of cross appeal seeking to appeal the jury’s decisions regarding invalidity and inequitable conduct. The U.S. Court of Appeals for the Federal Circuit has scheduled oral argument for June 3, 2014. At this time the Company does not believe that a loss is probable and remains unable to reasonably estimate a possible loss or range of loss associated with this litigation.
	On November 21, 2012, the Company filed suit against Pragmatus Telecom LLC, or Pragmatus, in the U.S. District Court for the District of Delaware (Civil Action No. 12-1507) seeking a declaratory judgment that the Company’s products do not infringe three patents allegedly owned by Pragmatus after certain of the Company’s customers received letters from Pragmatus claiming that their use of certain LogMeIn services infringed upon those patents. On March 29, 2013, the Company and Pragmatus entered into a License Agreement, which granted the Company a fully-paid license covering the patents at issue. The Company paid Pragmatus a one-time license fee in connection with the License Agreement in April 2013. As a result, the Company’s declaratory judgment action was dismissed by the court on May 3, 2013.
	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. 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. 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 condensed consolidated financial statements.

Summary_of_Significant_Account1

Summary of Significant Accounting Policies (Policies)	3 Months Ended
	Mar. 31, 2014
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 March 10, 2014. The unaudited interim condensed consolidated financial statements have been prepared on the same basis as the audited condensed consolidated 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 income 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, 2013 and March 31, 2014, marketable securities consisted of U.S. government agency securities that have remaining maturities within two years and have an aggregate amortized cost of $100.3 million and $100.2 million and an aggregate fair value of $100.3 million and $100.3 million, including $67,000 and $94,000 of unrealized gains and $28,000 and $22,000 of unrealized losses, respectively.
Revenue Recognition	'
	Revenue Recognition — The Company derives revenue primarily from subscription fees related to its LogMeIn premium services and 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. 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.
	The Company currently only offers free versions of its iPhone, iPad and Android software products. The Company had formerly sold these iPhone, iPad and Android software products as perpetually licensed software, the revenue from which was recognized when there was persuasive evidence of an arrangement, the product had been provided to the customer, the collection of the fee was probable, and the amount of fees to be paid by the customer was fixed or determinable.
	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, 2013, no customers accounted for 10% or more of accounts receivable and no customers accounted for 10% or more of revenue for the three months ended March 31, 2013 or 2014. As of March 31, 2014, two customers each accounted for 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 annual impairment test of goodwill on the last day of its fiscal year and 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. Through March 31, 2014, no impairments have occurred.
Long-Lived Assets and Intangible Assets	'
	Long-Lived Assets and Intangible Assets — The Company records intangible assets at their estimated fair values at the date of acquisition. Intangible assets are 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. The Company’s intangible assets have estimated useful lives which range from one to seven 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. Through March 31, 2014, no impairments have occurred.
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 gains of approximately $652,000 for the three months ended March 31, 2013 and foreign currency losses of approximately $28,000 for the three months ended March 31, 2014.
Stock-Based Compensation	'
	Stock-Based Compensation — Stock-based compensation is measured based upon the grant date fair value and recognized as an expense on a straight-line basis in the financial statements over the vesting period of the award for those awards expected to vest. The Company uses the Black-Scholes option pricing model to estimate the grant date fair value of stock awards. 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 or positions 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. Through December 31, 2013 and March 31, 2014, the Company has provided a liability for approximately $304,000 and $383,000 for uncertain tax positions, respectively. 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 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,
		2013			2014
	Revenue:
	United States	$	24,788		$	32,405
	United Kingdom		3,463			4,407
	International - all other		9,186			12,208
	Total revenue	$	37,437		$	49,020
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, 2014, the Company has not experienced any losses related to these indemnification obligations.
	In November 2012, the Company filed suit against Pragmatus Telecom LLC (“Pragmatus”), seeking declaratory judgment after certain of the Company’s customers received letters from Pragmatus claiming that their use of certain LogMeIn services infringed upon three patents allegedly owned by Pragmatus. On March 29, 2013, the Company and Pragmatus entered into a License Agreement, which granted the Company a fully-paid license covering the patents at issue. The Company paid Pragmatus a one-time licensing fee in April 2013, after a portion of the fee was reimbursed in March 2013 from a designated escrow arrangement associated with a prior acquisition. The Company recorded approximately $1.2 million of expense related to this matter in general and administrative expenses in March 2013. As a result, the Company’s declaratory judgment action against Pragmatus was dismissed by the court on May 3, 2013.
Net (Loss) Income Per Share	'
	Net (Loss) Income Per Share — Basic net (loss) income per share is computed by dividing net (loss) income by the weighted average number of common shares outstanding for the period. Diluted net (loss) income per share is computed by dividing net (loss) 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. For the three months ended March 31, 2013, the Company incurred a net loss and therefore, the effect of the Company’s outstanding common stock equivalents were not included in the calculation of diluted loss per share as they were anti-dilutive. Accordingly, basic and dilutive net loss per share for the period were identical.
	The Company excluded the following options to purchase common shares and restricted stock units from the computation of diluted net (loss) income per share either because they had an anti-dilutive impact or because the Company had a net loss in the period (in thousands):
		Three Months Ended March 31,
		2013			2014
	Options to purchase common shares		2,886			933
	Restricted stock units		863			173
	Total options and restricted stock units		3,749			1,106
	Basic and diluted net income per share was calculated as follows (in thousands, except share and per share data):
		Three Months Ended
		March 31, 2013
	Basic and diluted net loss per share:
	Net loss	$	(5,807	)
	Weighted average common shares outstanding		24,704,343
	Basic and diluted net loss per share	$	(0.24	)
		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

Summary_of_Significant_Account2

Summary of Significant Accounting Policies (Tables)	3 Months Ended
	Mar. 31, 2014
Accounting Policies [Abstract]	'
Schedule by Geographic Areas	'
	The Company’s revenue by geography (based on customer address) is as follows (in thousands):
		Three Months Ended March 31,
		2013			2014
	Revenue:
	United States	$	24,788		$	32,405
	United Kingdom		3,463			4,407
	International - all other		9,186			12,208
	Total revenue	$	37,437		$	49,020
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 (loss) income per share either because they had an anti-dilutive impact or because the Company had a net loss in the period (in thousands):
		Three Months Ended March 31,
		2013			2014
	Options to purchase common shares		2,886			933
	Restricted stock units		863			173
	Total options and restricted stock units		3,749			1,106
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, 2013
	Basic and diluted net loss per share:
	Net loss	$	(5,807	)
	Weighted average common shares outstanding		24,704,343
	Basic and diluted net loss per share	$	(0.24	)
		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

Fair_Value_of_Financial_Instru1

Fair Value of Financial Instruments (Tables)	3 Months Ended
	Mar. 31, 2014
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):
		Basis of Fair Value Measurements
		Balance		Quoted Prices		Significant		Significant
				in Active		Other		Unobservable
				Markets for		Observable		Inputs
				Identical		Inputs		(Level 3)
				Items		(Level 2)
				(Level 1)
	Balance at December 31, 2013
	Cash equivalents — money market funds	$	28,210	$	28,210	$	—	$	—
	Cash equivalents — bank deposits		5,001		—		5,001		—
	Short-term marketable securities — U.S. government agency securities		100,299		75,288		25,011		—
	Balance at March 31, 2014
	Cash equivalents - money market funds		29,516		29,516		—		—
	Cash equivalents - bank deposits		5,001		—		5,001		—
	Short-term marketable securities - U.S. government agency securities		100,255		80,246		20,009		—

Acquisitions_Tables

Acquisitions (Tables) (Ionia [Member])	3 Months Ended
	Mar. 31, 2014
Ionia [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		(172	)
	Customer backlog		120
	Trade name and trademark		10
	Customer relationships		1,340
	Documented know-how		280
	Goodwill		5,603
	Total purchase price	$	7,500

Goodwill_and_Intangible_Assets1

Goodwill and Intangible Assets (Tables)	3 Months Ended
	Mar. 31, 2014
Goodwill And Intangible Assets Disclosure [Abstract]	'
Changes in Goodwill	'
	Changes in goodwill for the three months ended March 31, 2014, are as follows (in thousands):
	Balance, December 31, 2013	$	18,712
	Goodwill related to the acquisition of Ionia		5,603
	Balance, March 31, 2014	$	24,315
Intangible Assets	'
	Intangible assets consist of the following (in thousands):
				December 31, 2013						March 31, 2014
		Estimated		Gross		Accumulated		Net		Gross		Accumulated		Net Carrying
		Useful Life		Carrying		Amortization		Carrying		Carrying		Amortization		Amount
				Amount				Amount		Amount
	Trademark		1-5 years	$	666	$	666	$	—	$	676	$	667	$	9
	Customer base		5-7 years		3,789		1,901		1,888		5,129		2,029		3,100
	Customer backlog		4 months		—		—		—		120		23		97
	Domain names		5 years		894		341		553		907		383		524
	Software		4 years		299		299		—		299		299		—
	Technology		3-6 years		13,963		1,835		12,128		13,963		2,204		11,759
	Technology and know-how		3 years		3,176		2,597		579		3,176		2,861		315
	Documented know-how		4 years		—		—		—		280		4		276
	Non-compete agreements		5 years		162		34		128		162		43		119
	Internally developed software		3 years		2,485		875		1,610		2,976		1,039		1,937
				$	25,434	$	8,548	$	16,886	$	27,688	$	9,552	$	18,136
Future Estimated Amortization Expense	'
	Future estimated amortization expense for intangible assets is as follows at March 31, 2014 (in thousands):
	Amortization Expense (Years Ending December 31)	Amount
	2014 (Nine months ending December 31)		3,724
	2015		4,264
	2016		3,718
	2017		3,160
	2018		2,780
	Thereafter		490
	Total	$	18,136

Accrued_Liabilities_Tables

Accrued Liabilities (Tables)	3 Months Ended
	Mar. 31, 2014
Payables And Accruals [Abstract]	'
Summary of Accrued Liabilities	'
	Accrued liabilities consisted of the following (in thousands):
		December 31,		March 31,
		2013		2014
	Marketing programs	$	4,631	$	4,868
	Payroll and payroll related		9,719		5,100
	Professional fees		1,064		1,141
	Other accrued liabilities		4,696		5,034
	Total accrued liabilities	$	20,110	$	16,143

Stock_Incentive_Plan_Tables

Stock Incentive Plan (Tables)	3 Months Ended
	Mar. 31, 2014
Disclosure Of Compensation Related Costs Sharebased 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,
		2013		2014
	Expected dividend yield	0.00%		0.00%
	Risk-free interest rate	0.87% - 0.88%		1.48%
	Expected option life (years)	6.25		6.25
	Expected volatility	55%		55%
Summary of Stock Option Activity	'
	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, 2014		2,389		$	26.85		6.4	$	22,330
	Granted		35			41.03
	Exercised		(270	)		21.37			$	5,495
	Forfeited		(46	)		36.38
	Outstanding at March 31, 2014		2,108		$	27.58		6.4	$	36,485
	Exercisable at December 31, 2013		1,451		$	23.45		5.4	$	17,855
	Exercisable at March 31, 2014		1,495		$	25.56		5.7	$	28,889
Summary of Assumptions Used in the Monte Carlo Simulation Model	'
	The assumptions used in the Monte Carlo simulation model include (but are not limited to) the following:
		Year
		Ended
		December 31,
		2013
	Risk-free interest rate		0.62	%
	Volatility		54	%
Schedule of Restricted Stock Unit Activity	'
	The following table summarizes restricted stock unit activity (shares in thousands):
		Number of shares			Weighted Average
		Underlying Restricted			Grant Date Fair
		Stock Units			Value
	Unvested as of January 1, 2014		1,192		$	28.47
	Restricted stock units granted		174			41.03
	Restricted stock units vested		(77	)		26.98
	Restricted stock units forfeited		(49	)		29.43
	Unvested as of March 31, 2014		1,240		$	30.29
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,
		2013			2014
	Cost of revenue	$	203		$	235
	Research and development		1,017			776
	Sales and marketing		2,081			2,061
	General and administrative		1,864			2,366
		$	5,165		$	5,438

Commitments_and_Contingencies_

Commitments and Contingencies (Tables)	3 Months Ended
	Mar. 31, 2014
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, 2014 (in thousands):
	Years Ending December 31
	2014 (Nine months ending December 31)		$	7,299
	2015			6,943
	2016			6,300
	2017			5,805
	2018			6,126
	Thereafter			21,564
	Total minimum lease payments		$	54,037
	-1	Excluded from the table above is $383,000 related to uncertain tax positions as the Company is uncertain as to when a cash settlement for these liabilities will occur.

Summary_of_Significant_Account3

Summary of Significant Accounting Policies - Additional Information (Detail) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013	Nov. 30, 2012
	Segment	Customer	Customer	Patents
	Customer
Organization And Summary Of Significant Accounting Policies [Line Items]	'	'	'	'
Marketable securities, maturities remaining	'2 years	'	'	'
Marketable securities, amortized cost	$100,200,000	'	$100,300,000	'
Marketable securities	100,255,000	'	100,299,000	'
Marketable securities, unrealized gains	94,000	'	67,000	'
Marketable securities, unrealized losses	22,000	'	28,000	'
Accounts receivable, customers accounted description	'10% of accounts receivable	'	'10% or more of accounts receivable	'
Accounts receivable, number of customers accounted	2	'	0	'
Revenue, customers accounted description	'10% or more of revenue	'10% or more of revenue	'	'
Revenue, number of customers accounted	0	0	'	'
Number of reporting unit	1	'	'	'
Impairments occurred	0	'	'	'
Long-lived asset impairment	0	'	'	'
Foreign currency gains	'	652,000	'	'
Foreign currency losses	28,000	'	'	'
Uncertain tax positions	383,000	'	304,000	'
Number of patents involved in infringement lawsuit	'	'	'	3
General and administrative expense	6,677,000	11,520,000	'	'
License Agreements [Member]	'	'	'	'
Organization And Summary Of Significant Accounting Policies [Line Items]	'	'	'	'
General and administrative expense	'	$1,200,000	'	'
Minimum [Member]	'	'	'	'
Organization And Summary Of Significant Accounting Policies [Line Items]	'	'	'	'
Revenue subscription period	'1 month	'	'	'
Intangible assets, estimated useful lives	'1 year	'	'	'
Maximum [Member]	'	'	'	'
Organization And Summary Of Significant Accounting Policies [Line Items]	'	'	'	'
Revenue subscription period	'5 years	'	'	'
Intangible assets, estimated useful lives	'7 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 by Geographic Areas (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Revenue from External Customer [Line Items]	'	'
Revenue	$49,020	$37,437
United States [Member]	'	'
Revenue from External Customer [Line Items]	'	'
Revenue	32,405	24,788
United Kingdom [Member]	'	'
Revenue from External Customer [Line Items]	'	'
Revenue	4,407	3,463
International - All Other [Member]	'	'
Revenue from External Customer [Line Items]	'	'
Revenue	$12,208	$9,186

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, 2014	Mar. 31, 2013
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'
Total options and restricted stock units	1,106	3,749
Options to Purchase Common Shares [Member]	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'
Total options and restricted stock units	933	2,886
Restricted Stock Units [Member]	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'
Total options and restricted stock units	173	863

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, 2014	Mar. 31, 2013
Basic and diluted net loss per share:	'	'
Net (loss) income	$1,004	($5,807)
Weighted average common shares outstanding	'	24,704,343
Basic and diluted net loss per share	'	($0.24)
Basic:	'	'
Net (loss) income	1,004	-5,807
Weighted average common shares outstanding, basic	24,123,291	24,704,343
Net income, basic	$0.04	($0.24)
Diluted:	'	'
Net (loss) income	$1,004	($5,807)
Weighted average common shares outstanding, basic	24,123,291	24,704,343
Add: Common stock equivalents	626,220	'
Weighted average common shares outstanding, diluted	24,749,511	24,704,343
Net income, diluted	$0.04	($0.24)

Fair_Value_of_Financial_Instru2

Fair Value of Financial Instruments - Summary of Company's Financial Assets Carried at Fair Value (Detail) (Recurring [Member], USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Money Market Funds [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Cash equivalents	$29,516	$28,210
Bank Deposits [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Cash equivalents	5,001	5,001
U.S. Government Agency Securities [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Short-term marketable securities - U.S. government agency securities	100,255	100,299
Quoted Prices in Active Markets for Identical Items (Level 1) [Member] | Money Market Funds [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Cash equivalents	29,516	28,210
Quoted Prices in Active Markets for Identical Items (Level 1) [Member] | U.S. Government Agency Securities [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Short-term marketable securities - U.S. government agency securities	80,246	75,288
Significant Other Observable Inputs (Level 2) [Member] | Bank Deposits [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Cash equivalents	5,001	5,001
Significant Other Observable Inputs (Level 2) [Member] | U.S. Government Agency Securities [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Short-term marketable securities - U.S. government agency securities	20,009	25,011
Significant Unobservable Inputs (Level 3) [Member] | Money Market Funds [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Cash equivalents	'	'
Significant Unobservable Inputs (Level 3) [Member] | Bank Deposits [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Cash equivalents	'	'
Significant Unobservable Inputs (Level 3) [Member] | U.S. Government Agency Securities [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Short-term marketable securities - U.S. government agency securities	'	'

Acquisitions_Additional_Inform

Acquisitions - Additional Information (Detail) (USD $)	3 Months Ended		0 Months Ended	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 07, 2014	Mar. 31, 2014
			Ionia [Member]	Ionia [Member]
Business Acquisition [Line Items]	'	'	'	'
Initial cash payment	'	'	$7,500,000	'
Contingent payments	'	'	4,000,000	'
Maturity period for contingent payment	'	'	'	'2 years
Operating revenues	1,598,000	-6,630,000	'	221,000
Operating expenses	41,302,000	39,658,000	'	471,000
Range of contingent payments, Minimum	'	'	'	0
Range of contingent payments, Maximum	'	'	'	4,000,000
Acquisition-related costs	'	'	'	$100,000

Acquisitions_Purchase_Price_Al

Acquisitions - Purchase Price Allocation (Detail) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Business Acquisition [Line Items]	'	'
Goodwill	$24,315	$18,712
Ionia [Member]	'	'
Business Acquisition [Line Items]	'	'
Cash	67	'
Current assets	296	'
Other assets	26	'
Deferred revenue	-70	'
Other liabilities	-172	'
Goodwill	5,603	'
Total purchase price	7,500	'
Customer backlog [Member] | Ionia [Member]	'	'
Business Acquisition [Line Items]	'	'
Business acquisition, Intangible assets	120	'
Trade Name and Trademark [Member] | Ionia [Member]	'	'
Business Acquisition [Line Items]	'	'
Business acquisition, Intangible assets	10	'
Customer Relationships [Member] | Ionia [Member]	'	'
Business Acquisition [Line Items]	'	'
Business acquisition, Intangible assets	1,340	'
Documented Know-how [Member] | Ionia [Member]	'	'
Business Acquisition [Line Items]	'	'
Business acquisition, Intangible assets	$280	'

Goodwill_and_Intangible_Assets2

Goodwill and Intangible Assets - Changes in Goodwill (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014
Goodwill And Intangible Assets Disclosure [Abstract]	'
Beginning balance	$18,712
Goodwill related to the acquisition of Ionia	5,603
Ending balance	$24,315

Goodwill_and_Intangible_Assets3

Goodwill and Intangible Assets - Intangible Assets (Detail) (USD $)

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Dec. 31, 2013

In Thousands, unless otherwise specified

Minimum [Member]

Maximum [Member]

Trademark [Member]

Trademark [Member]

Trademark [Member]

Trademark [Member]

Customer Base [Member]

Customer Base [Member]

Customer Base [Member]

Customer Base [Member]

Customer backlog [Member]

Customer backlog [Member]

Domain Names [Member]

Domain Names [Member]

Domain Names [Member]

Software [Member]

Software [Member]

Software [Member]

Technology [Member]

Technology [Member]

Technology [Member]

Technology [Member]

Technology and Know-how [Member]

Technology and Know-how [Member]

Technology and Know-how [Member]

Documented Know-how [Member]

Documented Know-how [Member]

Non-compete Agreements [Member]

Non-compete Agreements [Member]

Non-compete Agreements [Member]

Internally Developed Software [Member]

Internally Developed Software [Member]

Internally Developed Software [Member]

Minimum [Member]

Maximum [Member]

Minimum [Member]

Maximum [Member]

Maximum [Member]

Maximum [Member]

Maximum [Member]

Minimum [Member]

Maximum [Member]

Maximum [Member]

Maximum [Member]

Maximum [Member]

Maximum [Member]

Finite-Lived Intangible Assets [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Intangible assets, Estimated Useful Life

'

'

'1 year

'7 years

'

'

'1 year

'5 years

'

'

'5 years

'7 years

'

'4 months

'

'

'5 years

'

'

'4 years

'

'

'3 years

'6 years

'

'

'3 years

'

'4 years

'

'

'5 years

'

'

'3 years

Gross Carrying Amount

$27,688

$25,434

'

'

$676

$666

'

'

$5,129

$3,789

'

'

$120

'

$907

$894

'

$299

$299

'

$13,963

$13,963

'

'

$3,176

$3,176

'

$280

'

$162

$162

'

$2,976

$2,485

'

Accumulated Amortization

9,552

8,548

'

'

667

666

'

'

2,029

1,901

'

'

23

'

383

341

'

299

299

'

2,204

1,835

'

'

2,861

2,597

'

4

'

43

34

'

1,039

875

'

Net Carrying Amount

$18,136

$16,886

'

'

$9

'

'

'

$3,100

$1,888

'

'

$97

'

$524

$553

'

'

'

'

$11,759

$12,128

'

'

$315

$579

'

$276

'

$119

$128

'

$1,937

$1,610

'

Goodwill_and_Intangible_Assets4

Goodwill and Intangible Assets - Additional Information (Detail) (USD $)

3 Months Ended

12 Months Ended

12 Months Ended

0 Months Ended

12 Months Ended

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Dec. 31, 2013

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Nov. 06, 2013

Dec. 31, 2013

Dec. 31, 2013

Minimum [Member]

Maximum [Member]

Ionia [Member]

Ionia [Member]

Domain Names [Member]

Domain Names [Member]

Customer backlog [Member]

Customer backlog [Member]

Documented Know-how [Member]

Documented Know-how [Member]

Trade names [Member]

Customer Relationships [Member]

Technology [Member]

Technology [Member]

Technology [Member]

Minimum [Member]

Maximum [Member]

Maximum [Member]

Maximum [Member]

Ionia [Member]

Maximum [Member]

Ionia [Member]

Ionia [Member]

Ionia [Member]

Minimum [Member]

Maximum [Member]

Finite-Lived Intangible Assets [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Intangible assets acquired

'

'

'

'

'

'

'

'

'

$120,000

'

$280,000

$10,000

$1,340,000

'

'

'

Intangible assets, Estimated Useful Life

'

'

'1 year

'7 years

'4 months

'7 years

'

'5 years

'4 months

'

'4 years

'

'

'

'

'3 years

'6 years

Asset purchased

'

'

'

'

'

'

'

'

'

'

'

'

'

'

11,500,000

'

'

Estimated useful life period

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'5 years

'

'

Internally developed software

491,000

239,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Intangible asset additions

506,000

541,000

'

'

'

'

15,000

'

'

'

'

'

'

'

'

'

'

Total amortization of intangible assets

$1,000,000

$612,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Goodwill_and_Intangible_Assets5

Goodwill and Intangible Assets - Future Estimated Amortization Expense (Detail) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Intangible Liability Disclosure [Abstract]	'	'
2014 (Nine months ending December 31)	$3,724	'
2015	4,264	'
2016	3,718	'
2017	3,160	'
2018	2,780	'
Thereafter	490	'
Net Carrying Amount	$18,136	$16,886

Accrued_Expenses_Summary_of_Ac

Accrued Expenses - Summary of Accrued Liabilities (Detail) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Payables And Accruals [Abstract]	'	'
Marketing programs	$4,868	$4,631
Payroll and payroll related	5,100	9,719
Professional fees	1,141	1,064
Other accrued liabilities	5,034	4,696
Total accrued liabilities	$16,143	$20,110

Income_Taxes_Additional_Inform

Income Taxes - Additional Information (Detail) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
Income Tax Disclosure [Abstract]	'	'	'
Provision for (benefit from) income taxes	$677,000	($6,000)	'
Income (loss) before income taxes	1,681,000	-5,813,000	'
Uncertain tax provisions	383,000	'	304,000
Interest expense	$5,000	$0	'

Common_Stock_and_Equity_Additi

Common Stock and Equity - Additional Information (Detail) (USD $)	0 Months Ended	1 Months Ended	3 Months Ended
In Millions, except Share data, unless otherwise specified	Aug. 13, 2013	Feb. 28, 2013	Mar. 31, 2014	Mar. 31, 2013
Equity [Abstract]	'	'	'	'
Share repurchase program	$50	$25	'	'
Number of shares repurchased	'	'	148,500	501,822
Average price of repurchased shares	'	'	$33.05	$17.89
Total cost of shares repurchased	'	'	4.9	9
Amount available under repurchase program	'	'	$31	'

Stock_Incentive_Plan_Additiona

Stock Incentive Plan - Additional Information (Detail) (USD $)	3 Months Ended	12 Months Ended	1 Months Ended			3 Months Ended
In Millions, except Share data, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013	Aug. 31, 2013	Aug. 31, 2013	Aug. 31, 2013	Mar. 31, 2014	Mar. 31, 2014	Mar. 31, 2014	Mar. 31, 2014	Mar. 31, 2014	Mar. 31, 2014
			Minimum [Member]	Maximum [Member]	Market-based Restricted Stock Units [Member]	Stock Options [Member]	Restricted Stock Units [Member]	Restricted Stock Units [Member]	Restricted Stock Units [Member]	Restricted Stock Units [Member]	Time Based Restricted Stock Units [Member]
								Service-based Restricted Stock Units [Member]	Market-based Restricted Stock Units [Member]	Market-based Restricted Stock Units [Member]
									Minimum [Member]	Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Period of options vested	'	'	'	'	'	'4 years	'	'3 years	'2 years	'3 years	'
Period of expiration	'	'	'	'	'	'10 years	'	'	'	'	'
Increase in shares available to grant	1,400,000	'	'	'	'	'	'	'	'	'	'
Shares available for grant	1,484,892	'	'	'	'	'	'	'	'	'	'
Requisite service period of compensation expense	'4 years	'	'2 years	'3 years	'	'	'	'	'	'	'
Fair value of common stock	$44.89	$33.55	'	'	'	'	'	'	'	'	'
Weighted average grant date fair value	$21.78	$11.60	'	'	'	'	'	'	'	'	'
Number of restricted stock units, granted	'	'	'	'	74,000	'	174,000	'	'	'	174,286
Restricted stock units, vesting period	'	'	'	'	'	'	'	'	'	'	'3 years
Total shareholder return target share, percentage	'	'	0.00%	200.00%	'	'	'	'	'	'	'
Total shareholder return target share	'	'	'	148,000	'	'	'	'	'	'	'
Unrecognized share-based compensation cost	$36.60	'	'	'	'	'	'	'	'	'	'
Share-based compensation cost not yet recognized period for recognition	'2 years 1 month 6 days	'	'	'	'	'	'	'	'	'	'

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	Mar. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Expected dividend yield	0.00%	0.00%
Risk-free interest rate	1.48%	'
Expected option life (years)	'6 years 3 months	'6 years 3 months
Expected volatility	55.00%	55.00%
Minimum [Member]	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Risk-free interest rate	'	0.87%
Maximum [Member]	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Risk-free interest rate	'	0.88%

Stock_Incentive_Plan_Summary_o1

Stock Incentive Plan - Summary of Stock Option Activity (Detail) (USD $)	3 Months Ended	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]	'	'
Number of shares, Outstanding, Beginning balance	2,389	'
Number of shares, Granted	35	'
Number of shares, Exercised	-270	'
Number of shares, Forfeited	-46	'
Number of shares, Outstanding, Ending balance	2,108	2,389
Number of shares, Exercisable, Ending balance	1,495	1,451
Weighted Average Exercise Price, Outstanding, Beginning balance	$26.85	'
Weighted Average Exercise Price, Granted	$41.03	'
Weighted Average Exercise Price, Exercised	$21.37	'
Weighted Average Exercise Price, Forfeited	$36.38	'
Weighted Average Exercise Price, Outstanding, Ending balance	$27.58	$26.85
Weighted Average Exercise Price, Exercisable, Ending balance	$25.56	$23.45
Weighted Average Remaining Contractual Term (Years), Outstanding	'6 years 4 months 24 days	'6 years 4 months 24 days
Weighted Average Remaining Contractual Term (Years), Exercisable	'5 years 8 months 12 days	'5 years 4 months 24 days
Aggregate Intrinsic Value, Outstanding, Beginning balance	$22,330	'
Aggregate Intrinsic Value, Exercised	5,495	'
Aggregate Intrinsic Value, Outstanding, Ending balance	36,485	22,330
Aggregate Intrinsic Value, Exercisable, Ending balance	$28,889	$17,855

Stock_Incentive_Plan_Summary_o2

Stock Incentive Plan - Summary of Assumptions Used in the Monte Carlo Simulation Model (Detail)	3 Months Ended		12 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
			Market-based Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Risk-free interest rate	1.48%	'	0.62%
Volatility	55.00%	55.00%	54.00%

Stock_Incentive_Plan_Schedule_

Stock Incentive Plan - Schedule of Restricted Stock Unit Activity (Detail) (Restricted Stock Units [Member], USD $)	3 Months Ended
	Mar. 31, 2014
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	1,192,000
Number of shares Underlying Restricted Stock Units, granted	174,000
Number of shares Underlying Restricted Stock Units, vested	-77,000
Number of shares Underlying Restricted Stock Units, forfeited	-49,000
Number of shares Underlying Restricted Stock Units, Unvested, Ending balance	1,240,000
Weighted Average Grant Date Fair Value, Beginning balance	$28.47
Weighted Average Grant Date Fair Value, granted	$41.03
Weighted Average Grant Date Fair Value, vested	$26.98
Weighted Average Grant Date Fair Value, forfeited	$29.43
Weighted Average Grant Date Fair Value, Ending balance	$30.29

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, 2014	Mar. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Stock based compensation expense	$5,438	$5,165
Cost of Revenue [Member]	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Stock based compensation expense	235	203
Research and Development [Member]	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Stock based compensation expense	776	1,017
Sales and Marketing [Member]	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Stock based compensation expense	2,061	2,081
General and administrative [Member]	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Stock based compensation expense	$2,366	$1,864

Commitments_and_Contingencies_1

Commitments and Contingencies - Additional Information (Detail)	0 Months Ended	3 Months Ended
	Nov. 21, 2012	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014	Sep. 30, 2013	Sep. 30, 2013	Apr. 30, 2014	Apr. 30, 2014
	Patents	USD ($)	USD ($)	Massachusetts [Member]	Australia [Member]	Australia [Member]	Hungary [Member]	Hungary [Member]
				USD ($)	USD ($)	AUD	Subsequent Event [Member]	Subsequent Event [Member]
				Lease			USD ($)	EUR (€)
Commitments And Guarantees [Line Items]	'	'	'	'	'	'	'	'
Minimum lease payments	'	$54,037,000	'	$41,300,000	$658,000	711,000	$7,800,000	€ 5,700,000
Excess cost	'	'	'	5,600,000	'	'	'	'
Lease agreement security deposit	'	'	'	3,300,000	'	'	'	'
Bank deposit	'	'	'	3,500,000	'	'	'	'
Bank deposit percentage	'	'	'	105.00%	'	'	'	'
Number of times lease may be extended	'	'	'	2	'	'	'	'
Additional lease term	'	'	'	'5 years	'	'	'	'
Lease agreement bank guarantee	'	'	'	'	114,000	123,000	487,000	354,000
Rent expense under all leases	'	1,700,000	1,100,000	'	'	'	'	'
Hosting fees incurred	'	$1,100,000	$1,100,000	'	'	'	'	'
Number of patents involved in infringement lawsuit	3	'	'	'	'	'	'	'

Commitments_and_Contingencies_2

Commitments and Contingencies - Schedule of Minimum Future Lease Payments Receivable (Detail) (USD $)	Mar. 31, 2014
In Thousands, unless otherwise specified
Leases [Abstract]	'
2014 (Nine months ending December 31)	$7,299
2015	6,943
2016	6,300
2017	5,805
2018	6,126
Thereafter	21,564
Total minimum lease payments	$54,037

Commitments_and_Contingencies_3

Commitments and Contingencies - Schedule of Minimum Future Lease Payments Receivable (Parenthetical) (Detail) (USD $)	Mar. 31, 2014	Dec. 31, 2013
Leases [Abstract]	'	'
Uncertain tax positions	$383,000	$304,000