LogMeIn (LOGM) 10-Q 26 Apr 19 2019 Q1 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2019	Apr. 22, 2019
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2019
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q1
Trading Symbol	LOGM
Entity Registrant Name	LogMeIn, Inc.
Entity Central Index Key	0001420302
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Common Stock, Shares Outstanding		49,823,436

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 145,056	$ 148,652
Accounts receivable (net of allowances of $2,785 and $3,334 as of December 31, 2018 and March 31, 2019, respectively)	88,954	95,354
Prepaid expenses and other current assets	80,944	83,887
Total current assets	314,954	327,893
Property and equipment, net	101,445	98,238
Operating lease assets (Note 9)	108,530
Restricted cash, net of current portion	1,803	1,840
Intangibles, net	1,014,935	1,059,988
Goodwill	2,413,172	2,400,390
Other assets	46,303	41,545
Deferred tax assets	6,106	6,059
Total assets	4,007,248	3,935,953
Current liabilities:
Accounts payable	43,769	35,447
Current operating lease liabilities (Note 9)	16,024
Accrued liabilities	145,189	119,379
Deferred revenue, current portion	393,807	369,780
Total current liabilities	598,789	524,606
Long-term debt	200,000	200,000
Deferred revenue, net of current portion	8,488	9,518
Deferred tax liabilities	192,850	201,212
Non-current operating lease liabilities (Note 9)	98,293
Other long-term liabilities	13,892	25,929
Total liabilities	1,112,312	961,265
Commitments and contingencies (Note 13)
Preferred stock, $0.01 par value — 5,000 shares authorized, 0 shares outstanding as of December 31, 2018 and March 31, 2019
Equity:
Common stock, $0.01 par value—150,000 shares authorized; 56,703 and 56,890 shares issued; and 50,692 and 50,166 outstanding as of December 31, 2018 and March 31, 2019, respectively	569	567
Additional paid-in capital	3,322,862	3,316,603
Retained earnings	58,487	84,043
Accumulated other comprehensive income (loss)	(492)	2,133
Treasury stock, at cost - 6,011 and 6,725 shares as of December 31, 2018 and March 31, 2019, respectively	(486,490)	(428,658)
Total equity	2,894,936	2,974,688
Total liabilities and equity	$ 4,007,248	$ 3,935,953

Condensed Consolidated Balanc_2

Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Statement Of Financial Position [Abstract]
Allowance for doubtful accounts	$ 3,334	$ 2,785
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	150,000,000	150,000,000
Common stock, shares issued	56,890,000	56,703,000
Common stock, shares outstanding	50,166,000	50,692,000
Treasury stock, shares	6,725,000	6,011,000

Condensed Consolidated Statemen

Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Income Statement [Abstract]
Revenue	$ 307,700	$ 279,217
Cost of revenue	77,688	62,942
Gross profit	230,012	216,275
Operating expenses
Research and development	40,717	43,116
Sales and marketing	114,634	88,215
General and administrative	33,886	35,443
Restructuring charge	8,474
Gain on disposition of assets		(33,910)
Amortization of acquired intangibles	39,499	41,083
Total operating expenses	237,210	173,947
Income (loss) from operations	(7,198)	42,328
Interest income	661	673
Interest expense	(2,143)	(326)
Other income (expense), net	(260)	(240)
Income (loss) before income taxes	(8,940)	42,435
(Provision for) benefit from income taxes	(99)	(12,723)
Net income (loss)	$ (9,039)	$ 29,712
Net income (loss) per share:
Basic	$ (0.18)	$ 0.57
Diluted	$ (0.18)	$ 0.56
Weighted average shares outstanding:
Basic	50,639	52,457
Diluted	50,639	53,415
Cash dividends declared and paid per share	$ 0.325	$ 0.30

Condensed Consolidated Statem_2

Condensed Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Statement Of Income And Comprehensive Income [Abstract]
Net income (loss)	$ (9,039)	$ 29,712
Other comprehensive gain (loss):
Net translation gains (losses)	(2,625)	5,457
Comprehensive income (loss)	$ (11,664)	$ 35,169

Condensed Consolidated Statem_3

Condensed Consolidated Statements of Equity - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid-In Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income Loss [Member]	Treasury Stock [Member]
Balance at Dec. 31, 2017	$ 3,163,741	$ 560	$ 3,276,891	$ 50,445	$ 15,570	$ (179,725)
Balance, shares at Dec. 31, 2017		52,564,000
Issuance of common stock upon exercise of stock options	63		63
Issuance of common stock upon exercise of stock options, shares		4,000
Net issuance of common stock upon vesting of restricted stock units	(11,230)	$ 2	(11,232)
Net issuance of common stock upon vesting of restricted stock units, shares		183,000
Stock-based compensation	15,966		15,966
Treasury stock	$ (49,039)					(49,039)
Treasury stock, shares	(404,022)	(404,000)
Dividends on common stock	$ (15,738)			(15,738)
Net income (loss)	29,712			29,712
Cumulative translation adjustments	5,457				5,457
Balance at Mar. 31, 2018	3,160,362	$ 562	3,281,688	85,849	21,027	(228,764)
Balance, shares at Mar. 31, 2018		52,347,000
Adoption of ASC | ASU 2014-09 [Member]	21,430			21,430
Balance at Dec. 31, 2018	2,974,688	$ 567	3,316,603	84,043	2,133	(428,658)
Balance, shares at Dec. 31, 2018		50,692,000
Issuance of common stock upon exercise of stock options	41		41
Issuance of common stock upon exercise of stock options, shares		1,000
Net issuance of common stock upon vesting of restricted stock units	(8,811)	$ 2	(8,813)
Net issuance of common stock upon vesting of restricted stock units, shares		187,000
Stock-based compensation	15,031		15,031
Treasury stock	$ (57,832)					(57,832)
Treasury stock, shares	(713,985)	(714,000)
Dividends on common stock	$ (16,517)			(16,517)
Net income (loss)	(9,039)			(9,039)
Cumulative translation adjustments	(2,625)				(2,625)
Balance at Mar. 31, 2019	$ 2,894,936	$ 569	$ 3,322,862	$ 58,487	$ (492)	$ (486,490)
Balance, shares at Mar. 31, 2019		50,166,000

Condensed Consolidated Statem_4

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended				12 Months Ended
	Mar. 31, 2019	Dec. 31, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2018
Cash flows from operating activities
Net income (loss)	$ (9,039)			$ 29,712
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Stock-based compensation	15,031			15,966
Depreciation and amortization	75,944			71,290
Gain on disposition of assets, excluding transaction costs				(36,281)
Benefit from deferred income taxes	(11,651)			(9,353)
Other, net	337			464
Changes in assets and liabilities, excluding effect of acquisitions and dispositions:
Accounts receivable	6,024			9,820
Prepaid expenses and other current assets	2,883			4,767
Other assets	(6,674)			(2,767)
Accounts payable	9,344			9,646
Accrued liabilities	19,350			19,812
Deferred revenue	23,820			38,685
Other long-term liabilities	(5,719)			2,212
Net cash provided by operating activities	119,650			153,973
Cash flows from investing activities
Purchases of property and equipment	(12,187)			(7,249)
Intangible asset additions	(8,915)			(7,096)
Cash paid for acquisitions, net of cash acquired	(22,463)
Proceeds from disposition of assets				42,394
Net cash provided by (used in) investing activities	(43,565)			28,049
Cash flows from financing activities
Proceeds from issuance of common stock upon option exercises	41			63
Payments of withholding taxes in connection with restricted stock unit vesting	(7,789)			(9,230)
Dividends paid on common stock	(16,517)	$ (15,300)	$ (15,600)	(15,738)	$ (62,200)
Purchase of treasury stock	(54,067)			(46,901)
Net cash used in financing activities	(78,332)			(71,806)
Effect of exchange rate changes on cash, cash equivalents and restricted cash	(1,385)			2,657
Net increase (decrease) in cash, cash equivalents and restricted cash	(3,632)			112,873
Cash, cash equivalents and restricted cash, beginning of period	150,492		$ 367,082	254,209	254,209
Cash, cash equivalents and restricted cash, end of period	146,860	$ 150,492		367,082	$ 150,492
Supplemental disclosure of cash flow information
Cash paid for interest	1,906
Cash paid for (refunded from) income taxes	(313)			4,738
Noncash investing and financing activities
Purchases of property and equipment included in accounts payable and accrued liabilities	7,704			2,657
Withholding taxes in connection with restricted stock unit vesting in accrued liabilities	1,023			1,999
Purchases of treasury stock included in accrued liabilities	5,554			2,137
Purchases of intangible assets included in accrued liabilities				$ 2,500
Fair value of contingent consideration in connection with acquisition, included in accrued liabilities	$ 3,170

Nature of the Business

Nature of the Business	3 Months Ended
	Mar. 31, 2019
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Nature of the Business	1. Nature of the Business LogMeIn, Inc., which is referred to herein as LogMeIn or the Company, provides a portfolio of cloud-based unified communications and collaboration, identity and access management, and customer engagement and support solutions designed to simplify how people connect with each other and the world around them to drive meaningful interactions, deepen relationships, and create better outcomes for individuals and businesses. The Company is headquartered in Boston, Massachusetts with additional locations in North America, South America, Europe, Asia and Australia.

Summary of Significant Accounti

Summary of Significant Accounting Policies	3 Months Ended
	Mar. 31, 2019
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, or GAAP. Unaudited Interim Condensed Consolidated Financial Statements — The accompanying condensed consolidated financial statements and the related interim information contained within the notes to the condensed consolidated financial statements are unaudited and have been prepared in accordance with GAAP and applicable rules and regulations of the Securities and Exchange Commission for interim financial information. Accordingly, they do not include all of the information and notes required by GAAP for complete financial statements. The accompanying unaudited condensed consolidated financial statements should be read along with the Company’s audited financial statements included in the Company’s Annual Report on Form 10-K, filed with the Securities and Exchange Commission on February 21, 2019. The unaudited interim condensed consolidated financial statements have been prepared on the same basis as the audited financial statements and in the opinion of management, reflect all adjustments, consisting of normal and recurring adjustments, necessary for the fair presentation of the Company’s financial position, results of operations and cash flows for the interim periods presented. The results for the interim periods presented are not necessarily indicative of future results. The Company considers events or transactions that occur after the balance sheet date but before the financial statements are issued to provide additional evidence relative to certain estimates or to identify matters that require additional disclosure. Use of Estimates — The preparation of condensed consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenue and expenses during the reporting period. By their nature, estimates are subject to an inherent degree of uncertainty. Actual results could differ from those estimates. Costs to Obtain and Fulfill a Contract — The Company’s incremental costs of obtaining a contract consist of sales commissions and their related fringe benefits. Sales commissions and fringe benefits paid on renewals are not commensurate with sales commissions paid on the initial contract, but they are commensurate with each other. Sales commissions and fringe benefits are deferred and amortized on a straight-line basis over the period of benefit, which the Company has estimated to be three to four years for initial contracts and amortized over the renewal period for renewal contracts, typically one year. The period of benefit was determined based on an average customer contract term, expected contract renewals, changes in technology and the Company’s ability to retain customers. Deferred commissions are classified as current or noncurrent assets based on the timing the expense will be recognized. The current and noncurrent portions of deferred commissions are included in prepaid expenses and other current assets and other assets, respectively, in the Company’s condensed consolidated balance sheets. As of December 31, 2018 and March 31, 2019, the Company had $33.7 million of current deferred commissions and $31.2 million of noncurrent deferred commissions, and $36.4 million of current deferred commissions and $35.2 million of noncurrent deferred commissions, respectively. Commissions expense is primarily included in sales and marketing expense on the condensed consolidated statements of operations. The Company had amortization expense of $3.3 million and $8.5 million related to deferred commissions during the three months ended March 31, 2018 and 2019, respectively. Other costs incurred to fulfill contracts have been immaterial to date. Revenue Recognition — The Company derives its revenue primarily from subscription fees for its premium subscription software services and, to a lesser extent, usage fees from audio services. Revenue is reported net of applicable sales and use tax, value-added tax and other transaction taxes imposed on the related transaction including mandatory government charges that are passed through to the Company’s customers. Revenue is recognized when control of these services is transferred to the Company’s customers, in an amount that reflects the consideration the Company expects to be entitled to in exchange for those services. The Company determines revenue recognition through the following five steps: • Identification of the contract, or contracts, with a customer • Identification of the performance obligations in the contract • Determination of the transaction price • Allocation of the transaction price to the performance obligations in the contract • Recognition of revenue when, or as, performance obligations are satisfied The Company accounts for a contract when it has approval and commitment from both parties, the rights of the parties are identified, payment terms are identified, the contract has commercial substance and collectability of consideration is probable. Disaggregated Revenue — The Company disaggregates revenue from contracts with customers by geography and product grouping, as it believes it best depicts how the nature, amount, timing and uncertainty of revenue and cash flows are affected by economic factors. The Company’s revenue by geography (based on customer address) is as follows (in thousands): Three Months Ended March 31, 2018 2019 Revenues: United States $ 211,754 $ 241,294 International 67,463 66,406 Total revenue $ 279,217 $ 307,700 The Company’s revenue by product grouping is as follows (in thousands): Three Months Ended March 31, 2018 2019 Revenues: Unified communications and collaboration $ 149,907 $ 169,957 Identity and access management 84,670 94,179 Customer engagement and support 44,640 43,564 Total revenue $ 279,217 $ 307,700 Performance Obligations Premium Subscription Services As each day of providing access to the software is substantially the same and the customer simultaneously receives and consumes the benefits as access is provided, the Company has determined that its premium subscription services arrangements include a single performance obligation comprised of a series of distinct services. Revenue from the Company’s premium subscription services is recognized over time on a ratable basis over the contract term beginning on the date that the Company’s service is made available to the customer. Subscription periods range from monthly to multi-year, are typically billed in advance and are non-cancelable. Audio Services Accounts Receivable, Net — Accounts receivable, net, are amounts due from customers where there is an unconditional right to consideration. Unbilled receivables of $5.4 million and $6.4 million are included in this balance at December 31, 2018 and March 31, 2019, respectively. The payment of consideration related to these unbilled receivables is subject only to the passage of time. As of December 31, 2018 and March 31, 2019, lease receivables totaled $4.9 million (of which, $2.8 million was long term and in other assets), and $5.9 million (of which, $3.0 million was long term and in other assets), respectively. Contract Assets and Contract Liabilities — Contract assets and contract liabilities (deferred revenue) are reported net at the contract level for each reporting period. Contract Assets Contract Liabilities (Deferred Revenue) For the three months ended March 31, 2019, revenue recognized related to deferred revenue at January 1, 2019 was approximately $163 million. As of March 31, 2019 approximately $572.9 million of revenue is expected to be recognized from remaining performance obligations, including backlog, primarily over the next two years. Changes in contract balances for the three months ended March 31, 2019 are as follows (in thousands): Deferred Revenue Current Non-Current Total Balance as of January 1, 2019 $ 369,780 $ 9,518 $ 379,298 Increase (decrease), net 24,027 (1,030 ) 22,997 Balance as of March 31, 2019 $ 393,807 $ 8,488 $ 402,295 Concentrations of Credit Risk and Significant Customers — The Company’s principal credit risk relates to its cash, cash equivalents, 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. 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. For the three months ended March 31, 2018 and 2019, no customer accounted for more than 10% of revenue. As of December 31, 2018 and March 31, 2019, no customer accounted for more than 10% of accounts receivable. Segment Data — Operating segments are identified as components of an enterprise for which separate discrete financial information is available for evaluation by the chief operating decision-maker or decision-making group when making decisions regarding resource allocation and assessing performance. The Company’s chief operating decision maker is its Chief Executive Officer. The Company, whose management uses consolidated financial information in determining how to allocate resources and assess performance, has determined that it operates in one segment. Goodwill — Goodwill is the excess of the acquisition price over the fair value of the tangible and identifiable intangible net assets acquired. The Company does not amortize goodwill but performs an impairment test of goodwill annually or whenever events and circumstances indicate that the carrying amount of goodwill may exceed its fair value. The Company operates as a single operating segment with one reporting unit and consequently evaluates goodwill for impairment based on an evaluation of the fair value of the Company as a whole. As of November 30, 2018, our measurement date, the fair value of the Company as a whole exceeded the carrying amount of the Company. Through March 31, 2019, no events have been identified indicating an impairment. Long-Lived Assets and Intangible Assets — The Company records intangible assets at their respective estimated fair values at the date of acquisition. Intangible assets are being amortized based upon the pattern in which their economic benefit will be realized, or if this pattern cannot be reliably determined, using the straight-line method over their estimated useful lives, which range up to eleven 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, 2019, the Company recorded no material impairments. 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. Derivative Financial Instruments — The Company’s earnings and cash flows are subject to fluctuations due to changes in foreign currency exchange rates. The Company uses foreign currency forward contracts to manage exposure to fluctuations in foreign exchange rates that arise from receivables and payables denominated in foreign currencies. The Company does not designate foreign currency forward contracts as hedges for accounting purposes, and changes in the fair value of these instruments are recognized immediately in earnings. Because the Company enters into forward contracts only as an economic hedge, any gain or loss on the underlying foreign-denominated balance would be offset by the loss or gain on the forward contract. Gains and losses on forward contracts and foreign denominated receivables and payables are included in foreign currency net gains and losses. As of December 31, 2018 and March 31, 2019, the Company had outstanding forward contracts with notional amounts equivalent to the following (in thousands): Currency Hedged December 31, 2018 March 31, 2019 Euro / Canadian Dollar $ 537 $ — Euro / U.S. Dollar 5,203 4,175 Euro / British Pound 3,809 3,681 British Pound / U.S. Dollar 563 — Euro / Hungarian Forint — 3,451 U.S. Dollar / Israeli Shekel — 1,105 U.S. Dollar / Canadian Dollar 4,504 1,303 Total $ 14,616 $ 13,715 Net realized and unrealized foreign currency gains and losses was a net loss of $0.2 million and $0.3 million for the three months ended March 31, 2018 and 2019, respectively, which are included in other income (expense), net in the condensed consolidated statements of operations. Excluding the underlying foreign currency exposure being hedged, net realized and unrealized gains and losses on forward contracts included in foreign currency gains and losses was a net gain of $0.3 million and a net loss of $0.5 million for the three months ended March 31, 2018 and 2019, respectively. Stock-Based Compensation — The Company values all stock-based compensation awards, primarily restricted stock units, at fair value on the date of grant and recognizes the expense over the requisite service period, which is generally the vesting period, on a straight-line basis. 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 carryforwards and credits using enacted tax rates expected to be in effect in the years in which the differences are expected to reverse. At each balance sheet date, the Company assesses the likelihood that deferred tax assets will be realized and recognizes a valuation allowance if it is more likely than not that some portion of the deferred tax assets will not be realized. This assessment requires judgment as to the likelihood and amounts of future taxable income by tax jurisdiction. The Company evaluates its uncertain tax positions based on a determination of whether and how much of a tax benefit taken by the Company in its tax filings is more likely than not to be realized. Potential interest and penalties associated with any uncertain tax positions are recorded as a component of income tax expense. 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 bylaws. The maximum potential amount of future payments the Company could be required to make under these indemnification agreements is unlimited; however, the Company has directors’ and officers’ insurance coverage that the Company believes limits its exposure and enables it to recover a portion of any future amounts paid. In the ordinary course of business, the Company enters into agreements with certain customers that contractually obligate the Company to provide indemnifications of varying scope and terms with respect to certain matters including, but not limited to, losses arising out of the breach of such agreements, from the services provided by the Company or 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, in many cases, unlimited. Through March 31, 2019, the Company has not experienced any losses related to these indemnification obligations. Net Income (Loss) Per Share — Basic net income (loss) per share is computed by dividing net income (loss) by the weighted average number of common shares outstanding for the period. Diluted net income (loss) per share is computed by dividing net income (loss) by the sum of the weighted average number of common shares outstanding during the period and, if dilutive, the weighted average number of potential common shares outstanding from the assumed exercise of stock options and the vesting of restricted stock units. The Company excluded the following options to purchase common shares and restricted stock units from the computation of diluted net income (loss) per share because they had an anti-dilutive impact (in thousands): Three Months Ended March 31, 2018 2019 Options to purchase common shares — 44 Restricted stock units — 1,335 Total options and restricted stock units — 1,379 Basic and diluted net income (loss) per share was calculated as follows (in thousands, except per share data): Three Months Ended March 31, 2018 2019 Net income (loss) $ 29,712 $ (9,039 ) Basic: Weighted average common shares outstanding, basic 52,457 50,639 Net income (loss) per share, basic $ 0.57 $ (0.18 ) Diluted: Weighted average common shares outstanding 52,457 50,639 Add: Common stock equivalents 958 - Weighted average common shares outstanding, diluted 53,415 50,639 Net income (loss) per share, diluted $ 0.56 $ (0.18 ) Recently Adopted Accounting Pronouncements Leases The Financial Accounting Standards Board, or FASB, also issued ASU 2018-10, Codification Improvements to Topic 842 Leases, and ASU 2018-11, Targeted Improvements to Topic 842 Leases, which The Company adopted ASU 2016-02 and related amendments (collectively referred to herein as Topic 842) on January 1, 2019 using the modified retrospective approach applied at the beginning of the period of adoption and recorded operating lease assets of $117.3 million and operating lease liabilities of $123.4 million. The operating lease assets are lower than the operating lease liabilities, primarily because previously recorded net deferred rent balances were reclassified into the operating lease assets. There was no impact to retained earnings upon adoption of Topic 842. The Company elected the package of practical expedients permitted under the transition guidance within the new standard, which, among other things, allowed the Company to carry forward its historical lease classification. In addition, the Company has elected to exempt short term leases that qualify from recognizing right of use assets or lease liabilities, and has elected to not separate lease and non-lease components for all leases of which it is the lessee. The Company’s non-lease components are primarily related to maintenance related costs, which are typically variable in nature and are expensed in the period incurred. The Company accounts for a contract as a lease when it has the right to control the asset for a period of time while obtaining substantially all of the assets’ economic benefits. The Company’s leases are primarily for office space. The Company determines the initial classification and measurement of its operating right-of-use assets and operating lease liabilities at the lease commencement date and thereafter if modified. The lease term includes any renewal options that the Company is reasonably assured to exercise. The present value of lease payments is determined by using the interest rate implicit in the lease, if that rate is readily determinable; otherwise, the Company uses its estimated incremental borrowing rate for that lease term. Rent expense for operating leases is recognized on a straight-line basis over the reasonably assured lease term based on the total lease payments and is included in operating expense in the condensed consolidated statements of operations. For finance leases, any interest expense is recognized using the effective interest method and is included within interest expense. Amounts related to finance leases were immaterial as of March 31, 2019. For all leases, payments that are based on a fixed index or rate are included in the measurement of right-of-use assets and lease liabilities using the index or rate at the lease commencement date. The portion of future payments that vary based on the outcome of future indexes or rates are expensed in the period incurred. Recently Issued Accounting Pronouncements In August 2018, the FASB issued ASU 2018-15 , Intangibles – Goodwill and Other – Internal-Use Software: Customers Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract

Fair Value of Financial Instrum

Fair Value of Financial Instruments	3 Months Ended
	Mar. 31, 2019
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 and the debt outstanding under the credit facility approximates fair value. The Company’s financial assets and liabilities are measured using inputs from the three levels of the fair value hierarchy. A financial asset or liability’s classification within the hierarchy is determined based on the lowest level input that is significant to the fair value measurement. The three levels are as follows: • Level 1: Unadjusted quoted prices for identical assets or liabilities in active markets accessible by the Company at the measurement date. • Level 2: Inputs include quoted prices for similar assets and liabilities in active markets, quoted prices for identical or similar assets and liabilities in markets that are not active, inputs other than quoted prices that are observable for the asset or liability and inputs that are derived principally from or corroborated by observable market data by correlation or other means. • Level 3: Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities. A financial instrument’s level within the fair value hierarchy is based on the lowest level of any input that is significant to the fair value measurement. Money market funds and time deposits are classified within Level 1 of the fair value hierarchy because they are valued based on quoted market prices in active markets. Certificates of deposit, commercial paper and certain U.S. government agency securities are classified within Level 2 of the fair value hierarchy. These instruments are valued based on quoted prices in markets that are not active or based on other observable inputs consisting of market yields, reported trades and broker/dealer quotes. The principal market in which the Company executes foreign currency contracts is the institutional market in an over-the-counter environment with a relatively high level of price transparency. The market participants are usually large financial institutions. The Company’s foreign currency contracts’ valuation inputs are based on quoted prices and quoted pricing intervals from public data sources and do not involve management judgment. These contracts are typically classified within Level 2 of the fair value hierarchy. The Company’s Level 3 liability at March 31, 2019 consisted of contingent consideration related to a 2019 acquisition, as described further in Note 4 below. The contingent consideration of up to $4.0 million was based on the achievement of certain development milestones, the fair value of which was estimated at $3.2 million as of March 31, 2019. The fair value of contingent consideration was estimated by applying a probability-based model, which utilized inputs that were unobservable in the market. The Company’s significant financial assets and liabilities are measured at fair value in the table below (in thousands), which excludes cash on hand and assets and liabilities that are measured at historical cost or any basis other than fair value. Fair Value Measurements at December 31, 2018 Level 1 Level 2 Level 3 Total Financial assets (liabilities): Cash equivalents — money market funds $ 7,207 $ 19,943 $ — $ 27,150 Forward contracts ($14.6 million notional amount) $ — $ 5 $ — $ 5 Fair Value Measurements at March 31, 2019 Level 1 Level 2 Level 3 Total Financial assets (liabilities): Cash equivalents — money market funds $ 2,092 $ 19,940 $ — $ 22,032 Forward contracts ($13.7 million notional amount) $ — $ (35 ) $ — $ (35 ) Contingent consideration liability $ — $ — $ (3,151 ) $ (3,151 )

Acquisitions

Acquisitions	3 Months Ended
	Mar. 31, 2019
Business Combinations [Abstract]
Acquisitions	4. Acquisitions Acquisition-Related Costs Acquisition-related costs were $5.1 million and $3.9 million for the three months ended March 31, 2018 and 2019, respectively. Acquisition-related costs are associated with the acquisitions of businesses and intellectual property and include transaction, transition and integration-related charges (including legal, accounting and other professional fees, severance, and retention bonuses) and subsequent adjustments to the Company’s initial estimated amount of contingent consideration associated with acquisitions. Acquisition-related costs for the three months ended March 31, 2018 were primarily related to $2.1 million in integration-related severance costs, $2.0 million of transaction, transition and integration-related expenses primarily for the acquisition of Jive Communications, Inc., or Jive, in April 2018, and $1.0 million of retention-based bonuses primarily related to the acquisition of Nanorep Technologies Ltd., or Nanorep, in July 2017. Acquisition-related costs for the three months ended March 31, 2019 were primarily related to $0.9 million of transaction, transition and integration-related costs and $3.0 million of retention-based bonuses primarily related to the Jive and Nanorep acquisitions. 2019 Acquisitions On February 6, 2019, the Company acquired substantially all of the assets of an Israeli-based company specializing in artificial intelligence, or A.I., and speech-to-text recognition, pursuant to an asset purchase agreement. The Company completed the acquisition for $5.0 million in cash and potential acquisition-related contingent consideration totaling up to $4.0 million payable in 2019 and 2020 contingent upon the achievement of certain development milestones. This contingent liability was recorded at an estimated fair value of $3.2 million at the acquisition date which is included in accrued expenses on the accompanying consolidated balance sheet as of March 31, 2019. The Company will re-measure the fair value of the contingent consideration at each subsequent reporting period and recognize any adjustments to fair value as part of earnings. Additionally, the Company expects to pay up to $2.0 million in retention-based bonus payments to certain employees upon the achievement of specified retention milestones over the two-year period following the closing of the transaction. The Company accounted for the acquisition as a business combination. Assets acquired were primarily intellectual property. The Company’s preliminary purchase price allocation of the $8.2 million purchase consideration was $5.1 million of completed technology and $3.1 million of goodwill. The allocation of the purchase price is preliminary for the valuation of intangible assets as the Company is still gathering information. The Company plans to finalize the preliminary purchase price allocation in the second quarter of 2019. On February 21, 2019, the Company acquired a California-based provider of multi-factor and single-sign-on, or SSO, services pursuant to a stock purchase agreement dated February 13, 2019 for $17.5 million, net of cash acquired. Additionally, the Company expects to pay up to $4.4 million in retention-based bonus payments to certain employees upon the achievement of specified retention milestones over a three-year period following the closing of the transaction. The Company accounted for the acquisition as a business combination. The Company’s preliminary purchase price allocation of the $17.5 million purchase consideration was $11.8 million of completed technology, $9.0 million of goodwill and other current assets of $0.1 million partially offset by current liabilities of $0.3 million and a long-term deferred tax liability of $3.1 million primarily related to the amortization of intangible assets which cannot be deducted for tax purposes. The allocation of the purchase price is preliminary for income taxes and the valuation of intangible assets as the Company is still gathering information. The Company plans to finalize the preliminary purchase price allocation in the second quarter of 2019. The operating results of these February 2019 acquisitions, which have been included in the Company’s results since the date of the acquisitions, are not material. Accordingly, pro forma financial information for these business combinations has not been presented. 2018 Acquisition Jive Communications, Inc. On April 3, 2018, the Company acquired all of the outstanding equity of Jive Communications, Inc., a provider of cloud-based phone systems and Unified Communications services for $342.1 million, net of cash acquired. The Company funded the purchase price through a combination of existing cash on-hand and a $200.0 million revolving loan borrowed pursuant to its existing credit agreement. Additionally, the Company expects to pay up to $15 million in retention-based bonus payments to certain employees of Jive upon the achievement of specified retention milestones over the two-year period following the closing of the transaction, of which $1.1 million has been paid as of March 31, 2019. At the time of the closing, Jive had approximately 700 employees and fiscal year 2017 revenue was approximately $80 million. The operating results of Jive have been included in the Company’s results since the date of the acquisition. The Company continues to integrate Jive into its business and has begun selling new bundled product offerings. In 2019, stand-alone Jive revenue and operating income are not provided as the continued integration of the business and go-to-market strategy made these metrics incomparable to prior periods. The acquisition was accounted for under the acquisition method of accounting. The acquisition method of accounting requires, among other things, that assets acquired and liabilities assumed be recognized at their fair values as of the acquisition date. The fair value of assets acquired and liabilities assumed has been recognized based on management’s estimates and assumptions using the information about facts and circumstances that existed at the acquisition date. The Company finalized the allocation of purchase price in the fourth quarter of 2018. The following table summarizes the Company’s purchase price allocation (in thousands): Cash $ 2,571 Accounts receivable 11,986 Property and equipment 2,492 Prepaid expenses and other current assets 2,511 Other assets 2,255 Intangible assets: Completed technology (9 years) 35,200 Customer relationships (10 years) 117,500 Trade name (2 years) 900 Deferred revenue (5,498 ) Accounts payable and accrued liabilities (7,685 ) Deferred tax liabilities, net (25,223 ) Goodwill 207,634 Total purchase consideration 344,643 Less: cash acquired (2,571 ) Total purchase consideration, net of cash acquired $ 342,072 The useful lives of the identifiable intangible assets acquired range from 2 to 10 years with a weighted average useful life of 9.7 years. The goodwill recorded in connection with this transaction is primarily related to the expected opportunities to be achieved as a result of the Company’s ability to leverage its customer base, sales force and business plan with Jive’s product, technical expertise and customer base. All goodwill and intangible assets acquired are not deductible for income tax purposes. The Company recorded a long-term deferred tax liability, net, of $25.2 million primarily related to definite-lived intangible assets which cannot be deducted for tax purposes, partially offset by deferred tax assets primarily related to net operating losses acquired. The unaudited financial information in the table below summarizes the combined results of operations of the Company, including Jive, on a pro forma basis, as though the acquisition had been consummated as of the beginning of 2017, including amortization charges from acquired intangible assets, interest expense on borrowings and lower interest income in connection with the Company’s funding of the acquisition with existing cash and cash equivalents and borrowings under its credit facility, the inclusion of expense related to retention-based bonuses assuming full achievement of the retention requirements, the reclassification of acquisition-related costs of the Company and Jive incurred up to the transaction closing date, the effect of acquisition accounting on the fair value of acquired deferred revenue and the related tax effects. Any impact on the Jive pro forma net deferred tax liabilities as a result of the reduction in the federal corporate tax rate resulting from the Tax Cuts and Jobs Act of 2017, or the U.S. Tax Act, enacted on December 22, 2017 has been excluded. The pro forma financial information is presented for comparative purposes only and is not necessarily indicative of the results of operations that would have been achieved had the acquisition taken place at the beginning of 2017. Unaudited Pro Forma Financial Information (in millions except per share amounts) Three Months Ended March 31, 2018 Reported Pro Forma (unaudited) Revenue $ 279.2 $ 301.8 Net income $ 29.7 $ 19.7 Net income per share: Basic $ 0.57 $ 0.38 Diluted $ 0.56 $ 0.37 Weighted average shares outstanding: Basic 52.5 52.5 Diluted 53.4 53.4

Divestitures

Divestitures	3 Months Ended
	Mar. 31, 2019
Divestitures [Abstract]
Divestitures	5. Divestitures Divestiture of Xively On February 9, 2018, the Company and certain of its subsidiaries entered into an agreement to sell its Xively business. On March 20, 2018, the Company completed the sale for consideration of $49.9 million, comprised of $42.4 million of cash received in the first quarter of 2018 and $7.5 million of receivables held back as an escrow by the buyer as an exclusive security in the event of the Company’s breach of any of the representations and warranties in the definitive agreement. The $7.5 million receivable, due in September 2019, had a net present value of $7.4 million as of March 31, 2019, and is included in prepaids and other current assets on the condensed consolidated balance sheet. The Xively disposition resulted in a gain of $33.9 million recorded in 2018, comprised of the present value of the $49.6 million received as consideration less net assets disposed of $13.3 million and transaction costs of $2.4 million. The net assets disposed are primarily comprised of $14.0 million of goodwill allocated to the Xively business. The sale of the Xively business does not constitute a significant strategic shift that will have a material impact on the Company’s ongoing operations and financial results. Accordingly, pro forma information for the divestiture of Xively has not been presented.

Goodwill and Intangible Assets

Goodwill and Intangible Assets	3 Months Ended
	Mar. 31, 2019
Goodwill And Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets	6. Goodwill and Intangible Assets The changes in the carrying amounts of goodwill during the three months ended March 31, 2019 are primarily due to 2019 acquisitions. For additional information regarding these acquisitions, see Note 4 to the condensed consolidated financial statements. Changes in goodwill for the three months ended March 31, 2019 are as follows (in thousands): Balance, January 1, 2019 $ 2,400,390 Goodwill resulting from 2019 acquisitions 12,040 Foreign currency translation adjustments 742 Balance, March 31, 2019 $ 2,413,172 Intangible assets consist of the following (in thousands): December 31, 2018 March 31, 2019 Gross Carrying Amount Accumulated Amortization Net Carrying Amount Gross Carrying Amount Accumulated Amortization Net Carrying Amount Weighted Average Life Remaining (in years) Identifiable intangible assets: Customer relationships $ 920,265 $ 294,362 $ 625,903 $ 917,747 $ 330,147 $ 587,600 6.3 Technology 481,776 132,895 348,881 497,449 153,436 344,013 6.8 Trade names and trademarks 70,985 20,685 50,300 70,757 23,157 47,600 6.8 Other 3,577 1,319 2,258 3,576 1,398 2,178 6.8 Internally developed software 66,361 33,715 32,646 74,989 41,445 33,544 1.4 $ 1,542,964 $ 482,976 $ 1,059,988 $ 1,564,518 $ 549,583 $ 1,014,935 During the three months ended March 31, 2019, the Company capitalized $16.9 million for technology as intangible assets in connection with its 2019 acquisitions. During the three months ended March 31, 2018 and 2019, the Company capitalized $7.1 million and $8.9 million, respectively, of costs related to internally developed software to be sold as a service incurred during the application development stage and is amortizing these costs over the expected lives of the related services. The Company is amortizing its intangible assets 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. Amortization relating to technology, documented know-how (other) and internally developed software is recorded within cost of revenue and the amortization of trade names and trademarks, customer relationships, and domain names (other) is recorded within operating expenses. Amortization expense for intangible assets consisted of the following (in thousands): Three Months Ended March 31, 2018 2019 Cost of revenue: Amortization of internally developed software $ 4,394 $ 8,034 Amortization of acquired intangibles (1) 17,885 20,970 Sub-Total amortization of intangibles in cost of revenue 22,279 29,004 Amortization of acquired intangibles (1) 41,083 39,499 Total amortization of intangibles $ 63,362 $ 68,503 (1) Total amortization of acquired intangibles was $59.0 million and $60.5 million for the three months ended March 31, 2018 and 2019, respectively. Future estimated amortization expense for intangible assets at March 31, 2019 is as follows (in thousands): Amortization Expense (Years Ending December 31) Amount 2019 (nine months ending December 31) $ 201,864 2020 225,045 2021 181,495 2022 144,668 2023 114,738 2024 89,221 Thereafter 57,904 Total $ 1,014,935

Accrued Liabilities

Accrued Liabilities	3 Months Ended
	Mar. 31, 2019
Payables And Accruals [Abstract]
Accrued Liabilities	7. Accrued Liabilities Accrued liabilities consisted of the following (in thousands): December 31, 2018 March 31, 2019 Marketing programs $ 13,857 $ 14,089 Compensation and benefits-related 42,024 45,683 Acquisition-related (1) 6,407 9,374 Other accrued liabilities 57,091 76,043 Total accrued liabilities $ 119,379 $ 145,189 (1)

Restructuring Charges

Restructuring Charges	3 Months Ended
	Mar. 31, 2019
Restructuring And Related Activities [Abstract]
Restructuring Charges	8. Restructuring Charges On February 11, 2019, the Company’s Board of Directors approved a global restructuring plan, including a reduction in force which will result in the termination of approximately 4% of the Company’s workforce and the consolidation of certain leased facilities. By restructuring, the Company seeks to streamline its organization and reallocate resources to better align with the Company’s current growth acceleration goals. The Company expects to incur pre-tax restructuring charges of approximately $16 million, primarily attributable to termination benefits and related costs and consolidation of certain leased facilities. In the first quarter of 2019, the Company recorded restructuring charges of $8.5 million for termination benefits associated with approximately 110 employees and related costs. The Company expects leased facility consolidations to occur in the second half of 2019. The following table summarizes restructuring accrual activity, included in accrued liabilities, for the three months ended March 31, 2019 (in thousands): Employee severance and related costs Balance, January 1, 2019 $ — Charges to operations, net 8,474 Cash disbursements (1,859 ) Foreign exchange impact (35 ) Balance, March 31, 2019 $ 6,580

Leases

Leases	3 Months Ended
	Mar. 31, 2019
Leases [Abstract]
Leases	9. Leases On January 1, 2019, the Company adopted Topic 842 using the modified retrospective approach. The Company recorded operating lease assets (right-of-use assets) of $117.3 million and operating lease liabilities of $123.4 million. There was no impact to retained earnings upon adoption of Topic 842. As a practical expedient permitted under Topic 842, the Company has elected to account for the lease and non-lease components as a single lease component for all leases of which it is the lessee. Lease payments, which may include lease and non-lease components, are included in the measurement of the Company’s lease liabilities to the extent that such payments are either fixed amounts or variable amounts that depend on a rate or index as stipulated in the lease contract. When the Company cannot readily determine the rate implicit in the lease, the Company determines its incremental borrowing rate by using the rate of interest that it would have to pay to borrow on a collateralized basis over a similar term, an amount equal to the lease payments in a similar economic environment. On January 1, 2019, the discount rate used on existing operating leases at adoption, which had remaining lease terms between 2 and 12 years, ranged from 4.8-6.7%. For new or renewed leases starting in 2019, the discount rate is determined based on the Company’s incremental borrowing rate adjusted for the lease term including any reasonably certain renewal periods. The Company enters into lease agreements with terms generally ranging from 2-15 years. Some of the Company’s lease agreements include Company options to either extend and/or early terminate the lease, the costs of which are included in our operating lease liabilities to the extent that such options are reasonably certain of being exercised. Leases with renewal options allow the Company to extend the lease term typically between 1 and 5 years. When determining the lease term, renewal options reasonably certain of being exercised are included in the lease term. When determining if a renewal option is reasonably certain of being exercised, the Company considers several economic factors, including but not limited to, the significance of leasehold improvements incurred on the property, whether the asset is difficult to replace, underlying contractual obligations, or specific characteristics unique to that particular lease that would make it reasonably certain that the Company would exercise such option. Renewal and termination options were generally not included in the lease term for the Company’s existing operating leases. As of March 31, 2019, operating lease assets were $108.5 million and operating lease liabilities were $114.3 million. Amounts related to financing leases were immaterial. The maturity of the Company’s operating lease liabilities as of March 31, 2019 are as follows (in thousands): As of March 31, 2019 2019 (nine months ending December 31) $ 16,132 2020 23,640 2021 22,158 2022 20,189 2023 15,193 2024 10,555 Thereafter 35,697 Total future minimum lease payments 143,564 Less imputed interest 29,247 Total operating lease liabilities $ 114,317 Included in the condensed consolidated balance sheet: Current operating lease liabilities $ 16,024 Non-current operating lease liabilities 98,293 Total operating lease liabilities $ 114,317 For the three months ended March 31, 2019, the total lease cost is comprised of the following amounts (in thousands): Three months ended March 31, 2019 Operating lease expense $ 5,923 Variable lease expense 1,058 Short-term lease expense 147 Total lease expense $ 7,128 The following information represents supplemental disclosure for the statement of cash flows related to operating leases (in thousands): Three months ended March 31, 2019 Operating cash flows from operating leases $ (5,298 ) During the first quarter of 2019, the Company reassigned one of its leases located in Dublin, Ireland and was relieved of its obligation, which resulted in a reduction of its right of use asset of $3.5 million and a reduction of the operating lease liability of $3.8 million. The following summarizes additional information related to operating leases: As of March 31, 2019 Weighted-average remaining lease term — operating leases 7.1 Weighted-average discount rate — operating leases 6.0 % As previously disclosed in our 2018 Annual Report on Form 10-K and under the previous lease accounting standard, ASC 840, Leases the total commitment for non-cancelable operating leases was $153.7 million as of December 31, 2018 (in thousands): Years Ending December 31 Lease Commitments 2019 $ 23,969 2020 24,079 2021 22,253 2022 20,165 2023 14,986 Thereafter 48,290 Total $ 153,742

Income Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2019
Income Tax Disclosure [Abstract]
Income Taxes	10. Income Taxes For the three months ended March 31, 2018 and 2019, the Company recorded a provision for federal, state and foreign taxes of $12.7 million on a profit before income taxes of $42.4 million and a provision of $0.1 million on a loss before income taxes of $8.9 million, respectively. The effective income tax rates for the three months ended March 31, 2018 and 2019 were impacted by profits earned in certain foreign jurisdictions, primarily the Company’s Irish subsidiaries, which are subject to lower tax rates than the U.S. federal statutory rate. The effective income tax rate for the three months ended March 31, 2018 was also impacted by $1.7 million of excess tax deductions on stock compensation recorded as discrete tax benefits. During the three months ended March 31, 2018, the Company recorded discrete income tax provisions of $1.4 million related to discrete integration activities, $9.2 million on a pre-tax gain on disposition of assets of $33.9 million as a result of the divestiture of its Xively business, and $0.7 million to increase its one-time mandatory transition tax estimate as a result of the U.S. Tax Act. Deferred tax assets, related valuation allowances, current tax liabilities and deferred tax liabilities are determined separately by tax jurisdiction. In making these determinations, the Company estimates deferred tax assets, current tax liabilities and deferred tax liabilities, and the Company assesses temporary differences resulting from differing treatment of items for tax and accounting purposes. As of March 31, 2019, the Company maintained a full valuation allowance against the deferred tax assets of its Hungarian subsidiary (this entity has historical tax losses) and for a portion of its California and Massachusetts state net operating losses. The Company concluded it was not more likely than not that these deferred tax assets are realizable. The Company files income tax returns in the U.S. federal jurisdiction and various state and foreign jurisdictions. In the normal course of business, the Company and its subsidiaries are examined by various taxing authorities, including the Internal Revenue Service in the United States. The United States federal income tax returns are open to examination from 2017. The Company regularly assesses the likelihood of additional assessments by tax authorities and provides for these matters as appropriate. Audits by tax authorities typically involve examination of the deductibility of certain permanent items, limitations on net operating losses and tax credits. Although the Company believes its tax estimates are appropriate, the final determination of tax audits could result in material changes in its estimates. The Company has recorded a liability related to uncertain tax positions of $4.8 million and $5.4 million as of December 31, 2018 and March 31, 2019, respectively. The Company’s policy is to record estimated interest and penalties related to the underpayment of income taxes or unrecognized tax benefits as a component of its income tax provision, which was $25,000 and $44,000 of interest expense for the three months ended March 31, 2018 and 2019, respectively.

Common Stock and Equity

Common Stock and Equity	3 Months Ended
	Mar. 31, 2019
Federal Home Loan Banks [Abstract]
Common Stock and Equity	11. Common Stock and Equity On February 23, 2017, the Company’s Board of Directors approved a three-year capital return plan intended to return up to $700 million to stockholders through a combination of share repurchases and dividends. During the first quarter of 2019, the Company paid a cash dividend of $0.325 per share on March 12, 2019 to stockholders of record as of February 25, 2019. The Company’s Board of Directors will continue to review this capital return plan for potential modifications based on the Company’s financial performance, business outlook and other considerations. The timing and number of shares to be repurchased and/or the amount of cash dividends to be paid to the Company’s stockholders pursuant to the capital return plan will depend upon prevailing market conditions and other factors. Additionally, the Company’s credit facility contains certain financial and operating covenants that may restrict its ability to pay dividends in the future. The Company paid cash dividends per share during the periods presented as follows: Year Ended December 31, 2018 Year Ended December 31, 2019 Dividends Per Share Amount (in millions) Dividends Per Share Amount (in millions) First quarter $ 0.30 $ 15.7 $ 0.325 $ 16.5 Second quarter 0.30 15.6 Third quarter 0.30 15.5 Fourth quarter 0.30 15.3 Total cash dividends paid $ 1.20 $ 62.2 For the three months ended March 31, 2018 and 2019, the Company repurchased 404,022 and 713,985 shares of its common stock at an average price of $121.38 and $81.00 per share, for a total cost of $49.0 million and $57.8 million, respectively.

Stock Incentive Plan

Stock Incentive Plan	3 Months Ended
	Mar. 31, 2019
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Stock Incentive Plan	12. Stock Incentive Plan The Company’s 2009 Stock Incentive Plan, referred to herein as the 2009 Plan, is administered by the Board of Directors and the 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. The Company awards restricted stock units as its principal equity incentive award. Restricted stock units with time-based vesting conditions generally vest over a three-year period while restricted stock units with market-based or performance-based vesting conditions generally vest over two- or three-year periods. Until 2012, the Company generally granted stock options as the principal equity incentive award. Options generally vested over a four-year period and expire ten years from the date of grant. Certain stock-based awards provide for accelerated vesting if the Company experiences a change in control. As of March 31, 2019, 6.4 million shares remained available for grant under the 2009 Plan. As of March 31, 2019, 44,154 stock options were outstanding with a weighted average exercise price of $29.79, aggregate intrinsic value of $2.2 million and weighted average remaining contractual term of approximately three years. The aggregate intrinsic value was calculated based on the positive differences between the fair value of the Company’s common stock of $80.10 per share on March 31, 2019 and the exercise price of the options. During the three months ended March 31, 2019, the Company granted the following restricted stock unit awards (in thousands): Type of Award Number of Restricted Stock Units Time-based (1) 106 (1) Time-based restricted stock units generally vest one-third every year for three years and are valued on the grant date using the grant date closing price of the underlying shares. The following table summarizes restricted stock unit activity, including market-based TSR Units during the three months ended March 31, 2019 (shares in thousands): Number of Restricted Stock Units Weighted Average Grant Date Fair Value Unvested as of January 1, 2019 1,548 $ 100.55 Restricted stock units granted 106 82.27 Restricted stock units earned 14 Restricted stock units vested (286 ) 86.60 Restricted stock units forfeited (47 ) 105.37 Unvested as of March 31, 2019 1,335 $ 101.53 Market-based restricted stock units granted to certain key executives vest equally upon the achievement of a relative total shareholder return, or TSR, target as measured over a two- and three-year performance period versus the TSR realized for that same period by a specified stock index. The number of shares earned can range from 0% to 200% of the target shares awarded depending on the Company’s level of achievement. These market-based awards are referred to herein as TSR Units and are also tied to the individual executive’s continued employment with the Company throughout the applicable performance period. As of March 31, 2019, 135,313 TSR Units were outstanding. In February 2019, 63,955 restricted stock units with performance-based vesting conditions vested. These performance-based awards were granted in February 2017 and vesting was based on the achievement of certain financial performance metrics for fiscal years 2017 and 2018 established by the Board of Directors at the time of grant. Also, a total of 18,750 target TSR Units, which were awarded in 2016, vested at 176% of the target TSR Units granted (an additional 14,250 were earned and vested). These TSR Units were measured against the Russell 2000 Index for that same period. On April 1, 2019, the Company granted restricted stock units to employees, including some of our executive officers, as summarized in the following table (in thousands): Time-Based RSUs (1) Performance-Based RSUs (2) Market-Based TSR Units (3) Number of restricted stock units granted 793 54 54 (1) Time-based restricted stock units generally vest one-third every year for three years and are valued on the grant date using the grant date closing price of the underlying shares. (2) Performance-based restricted stock units are eligible to vest in March 2021 based upon attainment of a fiscal 2020 financial target. The number of shares earned can range from 0% to 200% of the target shares awarded depending on the Company’s level of achievement. (3) Market-based TSR Units are eligible to vest in April 2022 based upon our achievement of a total stockholder return target relative to the TSR realized for that same period by a specified stock index. The number of shares earned can range from 0% to 200% of the target shares awarded depending on the Company’s level of achievement. The Company recognizes stock compensation expense on a straight-line basis over the requisite service period of the restricted stock unit, which is generally three years. Compensation cost for TSR Units is recognized on a straight-line basis over the requisite service period and is recognized, regardless of the actual number of awards that are earned, based on the level of achievement of the market-based vesting condition. 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, 2018 2019 Cost of revenue $ 1,216 $ 980 Research and development 4,943 4,705 Sales and marketing 3,695 3,148 General and administrative 6,112 6,198 Total stock-based compensation expense $ 15,966 $ 15,031 As of March 31, 2019, there was approximately $91 million of total unrecognized share-based compensation cost related to unvested stock awards which are expected to be recognized over a weighted average period of 2.0 years.

Commitments and Contingencies

Commitments and Contingencies	3 Months Ended
	Mar. 31, 2019
Commitments And Contingencies Disclosure [Abstract]
Commitments and Contingencies	13. Commitments and Contingencies Operating Leases — As of March 31, 2019, the Company had operating lease agreements for offices in the United States, Hungary, Germany, Australia, the United Kingdom, Ireland, Israel, India, Canada, Brazil, Guatemala, and Mexico, see Note 9 to the condensed consolidated financial statements for additional information regarding the Company’s leases. Litigation — The Company routinely assesses its current litigation and/or threatened litigation as to the probability of ultimately incurring a liability, and records its best estimate of the ultimate loss in situations where the Company assesses the likelihood of loss as probable. On August 20, 2018, a securities class action lawsuit, referred to herein as the Securities Class Action, was initiated by purported stockholders of the Company in the U.S. District Court for the Central District of California against the Company and certain of its officers, entitled Wasson v. LogMeIn, Inc. et al. On January 30, 2019, a derivative action, referred to herein as the Derivative Action, was filed in the District of Massachusetts against the Company’s Board of Directors, entitled Schlagel v. Wagner et al. Given the inherent unpredictability of litigation and the fact that the Securities Class Action and the Derivative Action are still in early stages, the Company is unable to predict the outcome of these actions or reasonably estimate a possible loss or range of loss associated with them at this time. The Company is from time to time subject to various other legal proceedings and claims, either asserted or unasserted, which arise in the ordinary course of business. While the outcome of these other claims cannot be predicted with certainty, management does not believe that the outcome of any of these other legal matters will have a material adverse effect on the Company’s consolidated financial statements.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income (Loss)	3 Months Ended
	Mar. 31, 2019
Equity [Abstract]
Accumulated Other Comprehensive Income (Loss)	14. Accumulated Other Comprehensive Income (Loss) Accumulated other comprehensive income (loss) consists of foreign currency translation adjustments. The Company has determined that the undistributed earnings of all of its foreign subsidiaries, except for 100% of the current and prior year earnings and foreign currency translation adjustments related to those earnings, will continue to be indefinitely reinvested outside the United States for any additional outside basis differences inherent in these entities. Accumulated other comprehensive income (loss) is reported as a component of stockholders’ equity and, as of December 31, 2018 and March 31, 2019, was comprised of cumulative translation adjustment gains of $2.1 million and cumulative translation adjustment losses of $0.5 million, respectively. There were no material reclassifications to earnings in the three months ended March 31, 2018 and 2019.

Credit Facility

Credit Facility	3 Months Ended
	Mar. 31, 2019
Debt Disclosure [Abstract]
Credit Facility	15. Credit Facility On February 1, 2017, the Company entered into an Amended and Restated Credit Agreement, or the Amended Credit Agreement, which increased the Company’s secured revolving credit facility from $150 million to $400 million in the aggregate and permits the Company to increase the revolving credit facility and/or enter into one or more tranches of term loans up to an additional $200 million. On March 23, 2018, the Company entered into a borrower accession agreement with its wholly-owned subsidiary, LogMeIn USA, Inc. and JPMorgan Chase Bank, N.A. acting in its capacity as administrative agent, pursuant to which LogMeIn USA, Inc. became a borrower under the Company’s existing multi-currency Amended Credit Agreement. The credit facility matures February 1, 2022. The Company may prepay the loans or terminate or reduce the commitments in whole or in part at any time, without premium or penalty. The Company and its subsidiaries expect to use the credit facility for general corporate purposes, including, but not limited to, the potential acquisition of complementary products or businesses, share repurchases, as well as for working capital. On April 2, 2018, the Company borrowed $200.0 million under the Amended Credit Agreement to partially fund the acquisition of Jive, described further in Note 4 to the condensed consolidated financial statements. The Company had an outstanding debt balance of $200.0 million as of March 31, 2019. Loans under the Amended Credit Agreement bear interest at variable rates which reset every 30 to 180 days depending on the rate and period selected by the Company, as described below. As of April 11, 2019, the annual rate on the $200.0 million outstanding debt balance was 3.75%, which will reset on May 13, 2019. The average interest rate on borrowings outstanding for the three months ended March 31, 2019 was 3.8%. The quarterly commitment fee on the undrawn portion of the credit facility ranges from 0.15% to 0.30% per annum, based upon the Company’s total leverage ratio. The Amended Credit Agreement contains customary affirmative and negative covenants, subject to customary and other exceptions for a credit facility of this size and type, each as further described in the Amended Credit Agreement. As of March 31, 2019, the Company was in compliance with all financial and operating covenants of the Amended Credit Agreement. Any failure to comply with the financial or operating covenants of the Amended Credit Agreement would prevent the Company from being able to borrow additional funds, and would constitute a default, permitting the lenders to, among other things, accelerate the amounts outstanding, including all accrued interest and unpaid fees, under the credit facility and to terminate the credit facility. As of December 31, 2018 and March 31, 2019, the Company had $1.7 million and $1.5 million, respectively, of origination costs recorded in other assets on the accompanying condensed consolidated balance sheet. The Company presents debt issuance costs related to the revolving debt arrangement as an asset and subsequently amortizes the deferred debt issuance costs ratably over the term of the credit facility.

Subsequent Events

Subsequent Events	3 Months Ended
	Mar. 31, 2019
Subsequent Events [Abstract]
Subsequent Events	16. Subsequent Events Cash Dividend On April 25, 2019, the Company announced that its Board of Directors declared a cash dividend of $0.325 per share of common stock. The dividend is payable on May 24, 2019 to stockholders of record as of May 8, 2019.

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	3 Months Ended
	Mar. 31, 2019
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, or GAAP.
Unaudited Interim Condensed Consolidated Financial Statements	Unaudited Interim Condensed Consolidated Financial Statements — The accompanying condensed consolidated financial statements and the related interim information contained within the notes to the condensed consolidated financial statements are unaudited and have been prepared in accordance with GAAP and applicable rules and regulations of the Securities and Exchange Commission for interim financial information. Accordingly, they do not include all of the information and notes required by GAAP for complete financial statements. The accompanying unaudited condensed consolidated financial statements should be read along with the Company’s audited financial statements included in the Company’s Annual Report on Form 10-K, filed with the Securities and Exchange Commission on February 21, 2019. The unaudited interim condensed consolidated financial statements have been prepared on the same basis as the audited financial statements and in the opinion of management, reflect all adjustments, consisting of normal and recurring adjustments, necessary for the fair presentation of the Company’s financial position, results of operations and cash flows for the interim periods presented. The results for the interim periods presented are not necessarily indicative of future results. The Company considers events or transactions that occur after the balance sheet date but before the financial statements are issued to provide additional evidence relative to certain estimates or to identify matters that require additional disclosure.
Use of Estimates	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.
Costs to Obtain and Fulfill a Contract	Costs to Obtain and Fulfill a Contract — The Company’s incremental costs of obtaining a contract consist of sales commissions and their related fringe benefits. Sales commissions and fringe benefits paid on renewals are not commensurate with sales commissions paid on the initial contract, but they are commensurate with each other. Sales commissions and fringe benefits are deferred and amortized on a straight-line basis over the period of benefit, which the Company has estimated to be three to four years for initial contracts and amortized over the renewal period for renewal contracts, typically one year. The period of benefit was determined based on an average customer contract term, expected contract renewals, changes in technology and the Company’s ability to retain customers. Deferred commissions are classified as current or noncurrent assets based on the timing the expense will be recognized. The current and noncurrent portions of deferred commissions are included in prepaid expenses and other current assets and other assets, respectively, in the Company’s condensed consolidated balance sheets. As of December 31, 2018 and March 31, 2019, the Company had $33.7 million of current deferred commissions and $31.2 million of noncurrent deferred commissions, and $36.4 million of current deferred commissions and $35.2 million of noncurrent deferred commissions, respectively. Commissions expense is primarily included in sales and marketing expense on the condensed consolidated statements of operations. The Company had amortization expense of $3.3 million and $8.5 million related to deferred commissions during the three months ended March 31, 2018 and 2019, respectively. Other costs incurred to fulfill contracts have been immaterial to date.
Revenue Recognition	Revenue Recognition — The Company derives its revenue primarily from subscription fees for its premium subscription software services and, to a lesser extent, usage fees from audio services. Revenue is reported net of applicable sales and use tax, value-added tax and other transaction taxes imposed on the related transaction including mandatory government charges that are passed through to the Company’s customers. Revenue is recognized when control of these services is transferred to the Company’s customers, in an amount that reflects the consideration the Company expects to be entitled to in exchange for those services. The Company determines revenue recognition through the following five steps: • Identification of the contract, or contracts, with a customer • Identification of the performance obligations in the contract • Determination of the transaction price • Allocation of the transaction price to the performance obligations in the contract • Recognition of revenue when, or as, performance obligations are satisfied The Company accounts for a contract when it has approval and commitment from both parties, the rights of the parties are identified, payment terms are identified, the contract has commercial substance and collectability of consideration is probable.
Disaggregated Revenue	Disaggregated Revenue — The Company disaggregates revenue from contracts with customers by geography and product grouping, as it believes it best depicts how the nature, amount, timing and uncertainty of revenue and cash flows are affected by economic factors.
Performance Obligations	Performance Obligations Premium Subscription Services As each day of providing access to the software is substantially the same and the customer simultaneously receives and consumes the benefits as access is provided, the Company has determined that its premium subscription services arrangements include a single performance obligation comprised of a series of distinct services. Revenue from the Company’s premium subscription services is recognized over time on a ratable basis over the contract term beginning on the date that the Company’s service is made available to the customer. Subscription periods range from monthly to multi-year, are typically billed in advance and are non-cancelable. Audio Services
Accounts Receivable, Net	Accounts Receivable, Net — Accounts receivable, net, are amounts due from customers where there is an unconditional right to consideration. Unbilled receivables of $5.4 million and $6.4 million are included in this balance at December 31, 2018 and March 31, 2019, respectively. The payment of consideration related to these unbilled receivables is subject only to the passage of time. As of December 31, 2018 and March 31, 2019, lease receivables totaled $4.9 million (of which, $2.8 million was long term and in other assets), and $5.9 million (of which, $3.0 million was long term and in other assets), respectively.
Contract Assets and Contract Liabilities	Contract Assets and Contract Liabilities — Contract assets and contract liabilities (deferred revenue) are reported net at the contract level for each reporting period.
Contract Assets	Contract Assets
Contract Liabilities (Deferred Revenue)	Contract Liabilities (Deferred Revenue) For the three months ended March 31, 2019, revenue recognized related to deferred revenue at January 1, 2019 was approximately $163 million. As of March 31, 2019 approximately $572.9 million of revenue is expected to be recognized from remaining performance obligations, including backlog, primarily over the next two years. Changes in contract balances for the three months ended March 31, 2019 are as follows (in thousands): Deferred Revenue Current Non-Current Total Balance as of January 1, 2019 $ 369,780 $ 9,518 $ 379,298 Increase (decrease), net 24,027 (1,030 ) 22,997 Balance as of March 31, 2019 $ 393,807 $ 8,488 $ 402,295
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, 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. 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. For the three months ended March 31, 2018 and 2019, no customer accounted for more than 10% of revenue. As of December 31, 2018 and March 31, 2019, no customer accounted for more than 10% of accounts receivable.
Segment Data	Segment Data — Operating segments are identified as components of an enterprise for which separate discrete financial information is available for evaluation by the chief operating decision-maker or decision-making group when making decisions regarding resource allocation and assessing performance. The Company’s chief operating decision maker is its Chief Executive Officer. The Company, whose management uses consolidated financial information in determining how to allocate resources and assess performance, has determined that it operates in one segment.
Goodwill	Goodwill — Goodwill is the excess of the acquisition price over the fair value of the tangible and identifiable intangible net assets acquired. The Company does not amortize goodwill but performs an impairment test of goodwill annually or whenever events and circumstances indicate that the carrying amount of goodwill may exceed its fair value. The Company operates as a single operating segment with one reporting unit and consequently evaluates goodwill for impairment based on an evaluation of the fair value of the Company as a whole. As of November 30, 2018, our measurement date, the fair value of the Company as a whole exceeded the carrying amount of the Company. Through March 31, 2019, no events have been identified indicating an impairment.
Long-Lived Assets and Intangible Assets	Long-Lived Assets and Intangible Assets — The Company records intangible assets at their respective estimated fair values at the date of acquisition. Intangible assets are being amortized based upon the pattern in which their economic benefit will be realized, or if this pattern cannot be reliably determined, using the straight-line method over their estimated useful lives, which range up to eleven 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, 2019, the Company recorded no material impairments.
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.
Derivative Financial Instruments	Derivative Financial Instruments — The Company’s earnings and cash flows are subject to fluctuations due to changes in foreign currency exchange rates. The Company uses foreign currency forward contracts to manage exposure to fluctuations in foreign exchange rates that arise from receivables and payables denominated in foreign currencies. The Company does not designate foreign currency forward contracts as hedges for accounting purposes, and changes in the fair value of these instruments are recognized immediately in earnings. Because the Company enters into forward contracts only as an economic hedge, any gain or loss on the underlying foreign-denominated balance would be offset by the loss or gain on the forward contract. Gains and losses on forward contracts and foreign denominated receivables and payables are included in foreign currency net gains and losses. As of December 31, 2018 and March 31, 2019, the Company had outstanding forward contracts with notional amounts equivalent to the following (in thousands): Currency Hedged December 31, 2018 March 31, 2019 Euro / Canadian Dollar $ 537 $ — Euro / U.S. Dollar 5,203 4,175 Euro / British Pound 3,809 3,681 British Pound / U.S. Dollar 563 — Euro / Hungarian Forint — 3,451 U.S. Dollar / Israeli Shekel — 1,105 U.S. Dollar / Canadian Dollar 4,504 1,303 Total $ 14,616 $ 13,715 Net realized and unrealized foreign currency gains and losses was a net loss of $0.2 million and $0.3 million for the three months ended March 31, 2018 and 2019, respectively, which are included in other income (expense), net in the condensed consolidated statements of operations. Excluding the underlying foreign currency exposure being hedged, net realized and unrealized gains and losses on forward contracts included in foreign currency gains and losses was a net gain of $0.3 million and a net loss of $0.5 million for the three months ended March 31, 2018 and 2019, respectively.
Stock-Based Compensation	Stock-Based Compensation — The Company values all stock-based compensation awards, primarily restricted stock units, at fair value on the date of grant and recognizes the expense over the requisite service period, which is generally the vesting period, on a straight-line basis.
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 carryforwards and credits using enacted tax rates expected to be in effect in the years in which the differences are expected to reverse. At each balance sheet date, the Company assesses the likelihood that deferred tax assets will be realized and recognizes a valuation allowance if it is more likely than not that some portion of the deferred tax assets will not be realized. This assessment requires judgment as to the likelihood and amounts of future taxable income by tax jurisdiction. The Company evaluates its uncertain tax positions based on a determination of whether and how much of a tax benefit taken by the Company in its tax filings is more likely than not to be realized. Potential interest and penalties associated with any uncertain tax positions are recorded as a component of income tax expense.
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 bylaws. The maximum potential amount of future payments the Company could be required to make under these indemnification agreements is unlimited; however, the Company has directors’ and officers’ insurance coverage that the Company believes limits its exposure and enables it to recover a portion of any future amounts paid. In the ordinary course of business, the Company enters into agreements with certain customers that contractually obligate the Company to provide indemnifications of varying scope and terms with respect to certain matters including, but not limited to, losses arising out of the breach of such agreements, from the services provided by the Company or 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, in many cases, unlimited. Through March 31, 2019, the Company has not experienced any losses related to these indemnification obligations.
Net Income (Loss) Per Share	Net Income (Loss) Per Share — Basic net income (loss) per share is computed by dividing net income (loss) by the weighted average number of common shares outstanding for the period. Diluted net income (loss) per share is computed by dividing net income (loss) by the sum of the weighted average number of common shares outstanding during the period and, if dilutive, the weighted average number of potential common shares outstanding from the assumed exercise of stock options and the vesting of restricted stock units. The Company excluded the following options to purchase common shares and restricted stock units from the computation of diluted net income (loss) per share because they had an anti-dilutive impact (in thousands): Three Months Ended March 31, 2018 2019 Options to purchase common shares — 44 Restricted stock units — 1,335 Total options and restricted stock units — 1,379 Basic and diluted net income (loss) per share was calculated as follows (in thousands, except per share data): Three Months Ended March 31, 2018 2019 Net income (loss) $ 29,712 $ (9,039 ) Basic: Weighted average common shares outstanding, basic 52,457 50,639 Net income (loss) per share, basic $ 0.57 $ (0.18 ) Diluted: Weighted average common shares outstanding 52,457 50,639 Add: Common stock equivalents 958 - Weighted average common shares outstanding, diluted 53,415 50,639 Net income (loss) per share, diluted $ 0.56 $ (0.18 )
Recently Adopted Accounting Pronouncements	Recently Adopted Accounting Pronouncements Leases The Financial Accounting Standards Board, or FASB, also issued ASU 2018-10, Codification Improvements to Topic 842 Leases, and ASU 2018-11, Targeted Improvements to Topic 842 Leases, which The Company adopted ASU 2016-02 and related amendments (collectively referred to herein as Topic 842) on January 1, 2019 using the modified retrospective approach applied at the beginning of the period of adoption and recorded operating lease assets of $117.3 million and operating lease liabilities of $123.4 million. The operating lease assets are lower than the operating lease liabilities, primarily because previously recorded net deferred rent balances were reclassified into the operating lease assets. There was no impact to retained earnings upon adoption of Topic 842. The Company elected the package of practical expedients permitted under the transition guidance within the new standard, which, among other things, allowed the Company to carry forward its historical lease classification. In addition, the Company has elected to exempt short term leases that qualify from recognizing right of use assets or lease liabilities, and has elected to not separate lease and non-lease components for all leases of which it is the lessee. The Company’s non-lease components are primarily related to maintenance related costs, which are typically variable in nature and are expensed in the period incurred. The Company accounts for a contract as a lease when it has the right to control the asset for a period of time while obtaining substantially all of the assets’ economic benefits. The Company’s leases are primarily for office space. The Company determines the initial classification and measurement of its operating right-of-use assets and operating lease liabilities at the lease commencement date and thereafter if modified. The lease term includes any renewal options that the Company is reasonably assured to exercise. The present value of lease payments is determined by using the interest rate implicit in the lease, if that rate is readily determinable; otherwise, the Company uses its estimated incremental borrowing rate for that lease term. Rent expense for operating leases is recognized on a straight-line basis over the reasonably assured lease term based on the total lease payments and is included in operating expense in the condensed consolidated statements of operations. For finance leases, any interest expense is recognized using the effective interest method and is included within interest expense. Amounts related to finance leases were immaterial as of March 31, 2019. For all leases, payments that are based on a fixed index or rate are included in the measurement of right-of-use assets and lease liabilities using the index or rate at the lease commencement date. The portion of future payments that vary based on the outcome of future indexes or rates are expensed in the period incurred.
Recently Issued Accounting Pronouncements	Recently Issued Accounting Pronouncements In August 2018, the FASB issued ASU 2018-15 , Intangibles – Goodwill and Other – Internal-Use Software: Customers Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract

Summary of Significant Accoun_3

Summary of Significant Accounting Policies (Tables)	3 Months Ended
	Mar. 31, 2019
Accounting Policies [Abstract]
Schedule of Revenue by Geographic Areas	The Company’s revenue by geography (based on customer address) is as follows (in thousands): Three Months Ended March 31, 2018 2019 Revenues: United States $ 211,754 $ 241,294 International 67,463 66,406 Total revenue $ 279,217 $ 307,700
Schedule of Revenue by Product Grouping	The Company’s revenue by product grouping is as follows (in thousands): Three Months Ended March 31, 2018 2019 Revenues: Unified communications and collaboration $ 149,907 $ 169,957 Identity and access management 84,670 94,179 Customer engagement and support 44,640 43,564 Total revenue $ 279,217 $ 307,700
Summary of Changes in Deferred Revenue	Changes in contract balances for the three months ended March 31, 2019 are as follows (in thousands): Deferred Revenue Current Non-Current Total Balance as of January 1, 2019 $ 369,780 $ 9,518 $ 379,298 Increase (decrease), net 24,027 (1,030 ) 22,997 Balance as of March 31, 2019 $ 393,807 $ 8,488 $ 402,295
Summary of Outstanding Forward Contracts with Notional Amounts Equivalents	As of December 31, 2018 and March 31, 2019, the Company had outstanding forward contracts with notional amounts equivalent to the following (in thousands): Currency Hedged December 31, 2018 March 31, 2019 Euro / Canadian Dollar $ 537 $ — Euro / U.S. Dollar 5,203 4,175 Euro / British Pound 3,809 3,681 British Pound / U.S. Dollar 563 — Euro / Hungarian Forint — 3,451 U.S. Dollar / Israeli Shekel — 1,105 U.S. Dollar / Canadian Dollar 4,504 1,303 Total $ 14,616 $ 13,715
Schedule of Options to Purchase Common Shares and Restricted Stock Units	The Company excluded the following options to purchase common shares and restricted stock units from the computation of diluted net income (loss) per share because they had an anti-dilutive impact (in thousands): Three Months Ended March 31, 2018 2019 Options to purchase common shares — 44 Restricted stock units — 1,335 Total options and restricted stock units — 1,379
Reconciliation of Basic and Diluted Net Income per Share	Basic and diluted net income (loss) per share was calculated as follows (in thousands, except per share data): Three Months Ended March 31, 2018 2019 Net income (loss) $ 29,712 $ (9,039 ) Basic: Weighted average common shares outstanding, basic 52,457 50,639 Net income (loss) per share, basic $ 0.57 $ (0.18 ) Diluted: Weighted average common shares outstanding 52,457 50,639 Add: Common stock equivalents 958 - Weighted average common shares outstanding, diluted 53,415 50,639 Net income (loss) per share, diluted $ 0.56 $ (0.18 )

Fair Value of Financial Instr_2

Fair Value of Financial Instruments (Tables)	3 Months Ended
	Mar. 31, 2019
Fair Value Disclosures [Abstract]
Summary of Company's Significant Financial Assets and Liabilities Measured at Fair Value	The Company’s significant financial assets and liabilities are measured at fair value in the table below (in thousands), which excludes cash on hand and assets and liabilities that are measured at historical cost or any basis other than fair value. Fair Value Measurements at December 31, 2018 Level 1 Level 2 Level 3 Total Financial assets (liabilities): Cash equivalents — money market funds $ 7,207 $ 19,943 $ — $ 27,150 Forward contracts ($14.6 million notional amount) $ — $ 5 $ — $ 5 Fair Value Measurements at March 31, 2019 Level 1 Level 2 Level 3 Total Financial assets (liabilities): Cash equivalents — money market funds $ 2,092 $ 19,940 $ — $ 22,032 Forward contracts ($13.7 million notional amount) $ — $ (35 ) $ — $ (35 ) Contingent consideration liability $ — $ — $ (3,151 ) $ (3,151 )

Acquisitions (Tables)

Acquisitions (Tables) - Jive Communications, Inc [Member]	3 Months Ended
	Mar. 31, 2019
Business Acquisition [Line Items]
Purchase Price Allocation	The following table summarizes the Company’s purchase price allocation (in thousands): Cash $ 2,571 Accounts receivable 11,986 Property and equipment 2,492 Prepaid expenses and other current assets 2,511 Other assets 2,255 Intangible assets: Completed technology (9 years) 35,200 Customer relationships (10 years) 117,500 Trade name (2 years) 900 Deferred revenue (5,498 ) Accounts payable and accrued liabilities (7,685 ) Deferred tax liabilities, net (25,223 ) Goodwill 207,634 Total purchase consideration 344,643 Less: cash acquired (2,571 ) Total purchase consideration, net of cash acquired $ 342,072
Summary of Unaudited Pro Forma Information	Unaudited Pro Forma Financial Information (in millions except per share amounts) Three Months Ended March 31, 2018 Reported Pro Forma (unaudited) Revenue $ 279.2 $ 301.8 Net income $ 29.7 $ 19.7 Net income per share: Basic $ 0.57 $ 0.38 Diluted $ 0.56 $ 0.37 Weighted average shares outstanding: Basic 52.5 52.5 Diluted 53.4 53.4

Goodwill and Intangible Assets

Goodwill and Intangible Assets (Tables)	3 Months Ended
	Mar. 31, 2019
Goodwill And Intangible Assets Disclosure [Abstract]
Changes in Goodwill	Changes in goodwill for the three months ended March 31, 2019 are as follows (in thousands): Balance, January 1, 2019 $ 2,400,390 Goodwill resulting from 2019 acquisitions 12,040 Foreign currency translation adjustments 742 Balance, March 31, 2019 $ 2,413,172
Intangible Assets	Intangible assets consist of the following (in thousands): December 31, 2018 March 31, 2019 Gross Carrying Amount Accumulated Amortization Net Carrying Amount Gross Carrying Amount Accumulated Amortization Net Carrying Amount Weighted Average Life Remaining (in years) Identifiable intangible assets: Customer relationships $ 920,265 $ 294,362 $ 625,903 $ 917,747 $ 330,147 $ 587,600 6.3 Technology 481,776 132,895 348,881 497,449 153,436 344,013 6.8 Trade names and trademarks 70,985 20,685 50,300 70,757 23,157 47,600 6.8 Other 3,577 1,319 2,258 3,576 1,398 2,178 6.8 Internally developed software 66,361 33,715 32,646 74,989 41,445 33,544 1.4 $ 1,542,964 $ 482,976 $ 1,059,988 $ 1,564,518 $ 549,583 $ 1,014,935
Amortization Expense for Intangible Assets	Amortization expense for intangible assets consisted of the following (in thousands): Three Months Ended March 31, 2018 2019 Cost of revenue: Amortization of internally developed software $ 4,394 $ 8,034 Amortization of acquired intangibles (1) 17,885 20,970 Sub-Total amortization of intangibles in cost of revenue 22,279 29,004 Amortization of acquired intangibles (1) 41,083 39,499 Total amortization of intangibles $ 63,362 $ 68,503 (1) Total amortization of acquired intangibles was $59.0 million and $60.5 million for the three months ended March 31, 2018 and 2019, respectively.
Future Estimated Amortization Expense	Future estimated amortization expense for intangible assets at March 31, 2019 is as follows (in thousands): Amortization Expense (Years Ending December 31) Amount 2019 (nine months ending December 31) $ 201,864 2020 225,045 2021 181,495 2022 144,668 2023 114,738 2024 89,221 Thereafter 57,904 Total $ 1,014,935

Accrued Liabilities (Tables)

Accrued Liabilities (Tables)	3 Months Ended
	Mar. 31, 2019
Payables And Accruals [Abstract]
Summary of Accrued Liabilities	Accrued liabilities consisted of the following (in thousands): December 31, 2018 March 31, 2019 Marketing programs $ 13,857 $ 14,089 Compensation and benefits-related 42,024 45,683 Acquisition-related (1) 6,407 9,374 Other accrued liabilities 57,091 76,043 Total accrued liabilities $ 119,379 $ 145,189 (1)

Restructuring Charges (Tables)

Restructuring Charges (Tables)	3 Months Ended
	Mar. 31, 2019
Restructuring And Related Activities [Abstract]
Summary of Restructuring Accrual Activity	The following table summarizes restructuring accrual activity, included in accrued liabilities, for the three months ended March 31, 2019 (in thousands): Employee severance and related costs Balance, January 1, 2019 $ — Charges to operations, net 8,474 Cash disbursements (1,859 ) Foreign exchange impact (35 ) Balance, March 31, 2019 $ 6,580

Leases (Tables)

Leases (Tables)	3 Months Ended
	Mar. 31, 2019
Leases [Abstract]
Schedule of Maturity of Operating Lease Liabilities	The maturity of the Company’s operating lease liabilities as of March 31, 2019 are as follows (in thousands): As of March 31, 2019 2019 (nine months ending December 31) $ 16,132 2020 23,640 2021 22,158 2022 20,189 2023 15,193 2024 10,555 Thereafter 35,697 Total future minimum lease payments 143,564 Less imputed interest 29,247 Total operating lease liabilities $ 114,317 Included in the condensed consolidated balance sheet: Current operating lease liabilities $ 16,024 Non-current operating lease liabilities 98,293 Total operating lease liabilities $ 114,317
Components of Total Lease Cost	For the three months ended March 31, 2019, the total lease cost is comprised of the following amounts (in thousands): Three months ended March 31, 2019 Operating lease expense $ 5,923 Variable lease expense 1,058 Short-term lease expense 147 Total lease expense $ 7,128
Supplemental Disclosure for Statement of Cash Flows related to Operating Leases	The following information represents supplemental disclosure for the statement of cash flows related to operating leases (in thousands): Three months ended March 31, 2019 Operating cash flows from operating leases $ (5,298 )
Summary of Additional Information Related to Operating Leases	The following summarizes additional information related to operating leases: As of March 31, 2019 Weighted-average remaining lease term — operating leases 7.1 Weighted-average discount rate — operating leases 6.0 %
Schedule of Minimum Future Lease Payments Receivable	As previously disclosed in our 2018 Annual Report on Form 10-K and under the previous lease accounting standard, ASC 840, Leases the total commitment for non-cancelable operating leases was $153.7 million as of December 31, 2018 (in thousands): Years Ending December 31 Lease Commitments 2019 $ 23,969 2020 24,079 2021 22,253 2022 20,165 2023 14,986 Thereafter 48,290 Total $ 153,742

Common Stock and Equity (Tables

Common Stock and Equity (Tables)	3 Months Ended
	Mar. 31, 2019
Federal Home Loan Banks [Abstract]
Summary of Dividend Declared and Paid	The Company paid cash dividends per share during the periods presented as follows: Year Ended December 31, 2018 Year Ended December 31, 2019 Dividends Per Share Amount (in millions) Dividends Per Share Amount (in millions) First quarter $ 0.30 $ 15.7 $ 0.325 $ 16.5 Second quarter 0.30 15.6 Third quarter 0.30 15.5 Fourth quarter 0.30 15.3 Total cash dividends paid $ 1.20 $ 62.2

Stock Incentive Plan (Tables)

Stock Incentive Plan (Tables)	3 Months Ended
	Mar. 31, 2019
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Summary of Restricted Stock Awards Granted	During the three months ended March 31, 2019, the Company granted the following restricted stock unit awards (in thousands): Type of Award Number of Restricted Stock Units Time-based (1) 106 (1) Time-based restricted stock units generally vest one-third every year for three years and are valued on the grant date using the grant date closing price of the underlying shares. On April 1, 2019, the Company granted restricted stock units to employees, including some of our executive officers, as summarized in the following table (in thousands): Time-Based RSUs (1) Performance-Based RSUs (2) Market-Based TSR Units (3) Number of restricted stock units granted 793 54 54 (1) Time-based restricted stock units generally vest one-third every year for three years and are valued on the grant date using the grant date closing price of the underlying shares. (2) Performance-based restricted stock units are eligible to vest in March 2021 based upon attainment of a fiscal 2020 financial target. The number of shares earned can range from 0% to 200% of the target shares awarded depending on the Company’s level of achievement. (3) Market-based TSR Units are eligible to vest in April 2022 based upon our achievement of a total stockholder return target relative to the TSR realized for that same period by a specified stock index. The number of shares earned can range from 0% to 200% of the target shares awarded depending on the Company’s level of achievement.
Schedule of Restricted Stock Unit Activity Including Market-based Units	The following table summarizes restricted stock unit activity, including market-based TSR Units during the three months ended March 31, 2019 (shares in thousands): Number of Restricted Stock Units Weighted Average Grant Date Fair Value Unvested as of January 1, 2019 1,548 $ 100.55 Restricted stock units granted 106 82.27 Restricted stock units earned 14 Restricted stock units vested (286 ) 86.60 Restricted stock units forfeited (47 ) 105.37 Unvested as of March 31, 2019 1,335 $ 101.53
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, 2018 2019 Cost of revenue $ 1,216 $ 980 Research and development 4,943 4,705 Sales and marketing 3,695 3,148 General and administrative 6,112 6,198 Total stock-based compensation expense $ 15,966 $ 15,031

Summary of Significant Accoun_4

Summary of Significant Accounting Policies - Additional Information (Detail)	3 Months Ended		12 Months Ended
	Mar. 31, 2019USD ($)CustomerSegment	Mar. 31, 2018USD ($)Customer	Dec. 31, 2018USD ($)Customer	Jan. 01, 2019USD ($)
Organization And Summary Of Significant Accounting Policies [Line Items]
Amortization period for renewal contracts	1 year
Current deferred commissions	$ 36,400,000		$ 33,700,000
Noncurrent deferred commissions	35,200,000		31,200,000
Amortization expense related to deferred commissions	8,500,000	$ 3,300,000
Unbilled receivables	6,400,000		5,400,000
Lease receivable related to multiple-performance obligation arrangements	5,900,000		4,900,000
Contract assets	2,900,000		$ 2,300,000
Revenue recognized related to deferred revenue	163,000,000
Revenue is expected to be recognized from remaining performance obligations	$ 572,900,000
Number of operating segments | Segment	1
Number of reporting unit | Segment	1
Goodwill impairments	$ 0
Long-lived asset impairment	0
Net realized and unrealized foreign currency gains and losses	(300,000)	(200,000)
Operating lease assets	108,530,000
Operating lease liabilities	114,317,000
ASU 2016-02 [Member]
Organization And Summary Of Significant Accounting Policies [Line Items]
Operating lease assets	117,300,000			$ 117,300,000
Operating lease liabilities	123,400,000			$ 123,400,000
Indemnification Agreement [Member]
Organization And Summary Of Significant Accounting Policies [Line Items]
Losses related to indemnification obligations	0
Forward Contracts [Member]
Organization And Summary Of Significant Accounting Policies [Line Items]
Net realized and unrealized foreign currency gains and losses	$ (500,000)	$ 300,000
Sales Revenue, Net [Member]
Organization And Summary Of Significant Accounting Policies [Line Items]
Revenue, number of customers accounted | Customer	0	0
Accounts Receivable [Member]
Organization And Summary Of Significant Accounting Policies [Line Items]
Accounts receivable, number of major customers | Customer	0		0
Long Term and Other Assets [Member]
Organization And Summary Of Significant Accounting Policies [Line Items]
Lease receivable related to multiple-performance obligation arrangements	$ 3,000,000		$ 2,800,000
Prepaid and Other Current Assets [Member]
Organization And Summary Of Significant Accounting Policies [Line Items]
Contract assets	1,600,000		1,300,000
Other Assets [Member]
Organization And Summary Of Significant Accounting Policies [Line Items]
Contract assets	$ 1,300,000		$ 1,000,000
Minimum [Member]
Organization And Summary Of Significant Accounting Policies [Line Items]
Capitalized contract cost, amortization period	3 years
Minimum [Member] | Customer Concentration Risk [Member] | Sales Revenue, Net [Member]
Organization And Summary Of Significant Accounting Policies [Line Items]
Percentage outstanding for major customer	10.00%	10.00%
Minimum [Member] | Credit Concentration Risk [Member] | Accounts Receivable [Member]
Organization And Summary Of Significant Accounting Policies [Line Items]
Percentage outstanding for major customer	10.00%		10.00%
Maximum [Member]
Organization And Summary Of Significant Accounting Policies [Line Items]
Capitalized contract cost, amortization period	4 years
Useful lives of identifiable intangible assets acquired	11 years

Summary of Significant Accoun_5

Summary of Significant Accounting Policies - Schedule of Revenue and Long-lived Assets by Geographic Areas (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	$ 307,700	$ 279,217
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	241,294	211,754
International [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	$ 66,406	$ 67,463

Summary of Significant Accoun_6

Summary of Significant Accounting Policies - Schedule of Revenue by Product Grouping (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Revenue from External Customer [Line Items]
Revenues	$ 307,700	$ 279,217
Unified Communications and Collaboration [Member]
Revenue from External Customer [Line Items]
Revenues	169,957	149,907
Identity and Access Management [Member]
Revenue from External Customer [Line Items]
Revenues	94,179	84,670
Customer Engagement And Support [Member]
Revenue from External Customer [Line Items]
Revenues	$ 43,564	$ 44,640

Summary of Significant Accoun_7

Summary of Significant Accounting Policies - Additional Information (Detail1)	Mar. 31, 2019
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2019-01-01
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items]
Revenue remaining performance obligation, expected recognition period	2 years

Summary of Significant Accoun_8

Summary of Significant Accounting Policies - Summary of Changes in Deferred Revenue (Detail) $ in Thousands	3 Months Ended
	Mar. 31, 2019USD ($)
Contract With Customer Liability [Abstract]
Balance as of January 1, 2019	$ 369,780
Increase (decrease), net	24,027
Balance as of March 31, 2019	393,807
Balance as of January 1, 2019	9,518
Increase (decrease), net	(1,030)
Balance as of March 31, 2019	8,488
Balance as of January 1, 2019	379,298
Increase (decrease), net	22,997
Balance as of March 31, 2019	$ 402,295

Summary of Significant Accoun_9

Summary of Significant Accounting Policies - Summary of Outstanding Forward Contracts with Notional Amounts Equivalents (Detail) - Foreign Exchange Forward [Member] - Not Designated as Hedging Instrument [Member] - USD ($)	Mar. 31, 2019	Dec. 31, 2018
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Outstanding forward contracts with notional amounts	$ 13,715,000	$ 14,616,000
Euro / Canadian Dollar [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Outstanding forward contracts with notional amounts		537,000
Euro / U.S. Dollar [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Outstanding forward contracts with notional amounts	4,175,000	5,203,000
Euro / British Pound [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Outstanding forward contracts with notional amounts	3,681,000	3,809,000
British Pound / U.S. Dollar [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Outstanding forward contracts with notional amounts		563,000
Euro / Hungarian Forint [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Outstanding forward contracts with notional amounts	3,451,000
U.S. Dollar / Israeli Shekel [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Outstanding forward contracts with notional amounts	1,105,000
U.S. Dollar / Canadian Dollar [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Outstanding forward contracts with notional amounts	$ 1,303,000	$ 4,504,000

Summary of Significant Accou_10

Summary of Significant Accounting Policies - Schedule of Options to Purchase Common Shares and Restricted Stock Units (Detail) shares in Thousands	3 Months Ended
	Mar. 31, 2019shares
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total options and restricted stock units	1,379
Stock Options [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total options and restricted stock units	44
Restricted Stock Units [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total options and restricted stock units	1,335

Summary of Significant Accou_11

Summary of Significant Accounting Policies - Reconciliation of Basic and Diluted Net Income per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Accounting Policies [Abstract]
Net income (loss)	$ (9,039)	$ 29,712
Basic:
Weighted average common shares outstanding, basic	50,639	52,457
Net income (loss) per share, basic	$ (0.18)	$ 0.57
Diluted:
Weighted average common shares outstanding, basic	50,639	52,457
Add: Common stock equivalents		958
Weighted average common shares outstanding, diluted	50,639	53,415
Net income (loss) per share, diluted	$ (0.18)	$ 0.56

Fair Value of Financial Instr_3

Fair Value of Financial Instruments - Additional Information (Detail) $ in Thousands	Mar. 31, 2019USD ($)
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Contingent Consideration recorded as an estimated fair value	$ 3,151
Level 3 [Member] | Maximum [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Cash paid for acquisition, net of cash acquired	4,000
Recurring [Member] | Level 3 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Contingent Consideration recorded as an estimated fair value	$ 3,151

Fair Value of Financial Instr_4

Fair Value of Financial Instruments - Summary of Company's Significant Financial Assets and Liabilities Measured at Fair Value (Detail) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Contingent consideration liability	$ (3,151)
Money Market Funds [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Cash equivalents - Financial assets	22,032	$ 27,150
Forward Contracts [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Forward contracts - Financial assets		5
Forward contracts - Financial liabilities	(35)
Recurring [Member] | 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 - Financial assets	2,092	7,207
Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member] | Money Market Funds [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Cash equivalents - Financial assets	19,940	19,943
Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member] | Forward Contracts [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Forward contracts - Financial assets		$ 5
Forward contracts - Financial liabilities	(35)
Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Contingent consideration liability	$ (3,151)

Fair Value of Financial Instr_5

Fair Value of Financial Instruments - Summary of Company's Significant Financial Assets and Liabilities Measured at Fair Value (Parenthetical) (Detail) - USD ($)	Mar. 31, 2019	Dec. 31, 2018
Forward Contracts [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Financial liabilities notional amount	$ 13,700,000	$ 14,600,000

Acquisitions - Additional Infor

Acquisitions - Additional Information (Detail)	Feb. 21, 2019USD ($)	Feb. 13, 2019USD ($)	Feb. 06, 2019USD ($)	Apr. 03, 2018USD ($)	Mar. 31, 2019USD ($)	Mar. 31, 2018USD ($)	Dec. 31, 2018USD ($)
Business Acquisition [Line Items]
Acquisition-related costs					$ 3,900,000	$ 5,100,000
Acquisition related integration-related severance expenses						2,100,000
Cash consideration					22,463,000
Goodwill					2,413,172,000		$ 2,400,390,000
Current liabilities					598,789,000		524,606,000
Deferred tax liabilities					192,850,000		$ 201,212,000
Nanorep Technologies Ltd [Member]
Business Acquisition [Line Items]
Acquisition related retention-based bonus payment expense						1,000,000
Jive Communications, Inc and Nanorep Technologies Ltd [Member]
Business Acquisition [Line Items]
Acquisition related transaction, transition and integration-related costs					900,000
Acquisition related retention-based bonus payment expense					3,000,000
Jive Communications, Inc [Member]
Business Acquisition [Line Items]
Acquisition related transaction, transition and integration-related costs						$ 2,000,000
Cash consideration				$ 342,100,000	$ 342,072,000
Minimum years of service for contingent payment					2 years
Preliminary purchase consideration					$ 344,643,000
Goodwill					207,634,000
Deferred tax liabilities					$ 25,200,000
Business acquisition date					Apr. 3, 2018
Business combination contingent consideration paid					$ 1,100,000
Number of employees				700
Revenue of acquiree					$ 80,000,000
Useful lives of identifiable intangible assets acquired					9 years 8 months 12 days
Jive Communications, Inc [Member] | Revolving Facility [Member]
Business Acquisition [Line Items]
Line of Credit Facility, Amount Outstanding				$ 200,000,000
Jive Communications, Inc [Member] | Maximum [Member]
Business Acquisition [Line Items]
Cash paid for acquisition, net of cash acquired					$ 15,000,000
Useful lives of identifiable intangible assets acquired					10 years
Jive Communications, Inc [Member] | Minimum [Member]
Business Acquisition [Line Items]
Useful lives of identifiable intangible assets acquired					2 years
Israeli-based Company [Member]
Business Acquisition [Line Items]
Cash consideration			$ 5,000,000
Contingent Consideration recorded as an estimated fair value			$ 3,200,000
Minimum years of service for contingent payment			2 years
Preliminary purchase consideration			$ 8,200,000
Goodwill			3,100,000
Israeli-based Company [Member] | Maximum [Member]
Business Acquisition [Line Items]
Cash paid for acquisition, net of cash acquired			4,000,000
Israeli-based Company [Member] | Maximum [Member] | Retention Milestone [Member]
Business Acquisition [Line Items]
Cash paid for acquisition, net of cash acquired			2,000,000
Israeli-based Company [Member] | Completed Technology [Member]
Business Acquisition [Line Items]
Preliminary purchase consideration			$ 5,100,000
California-based Company [Member]
Business Acquisition [Line Items]
Cash consideration	$ 17,500,000
Minimum years of service for contingent payment	3 years
Preliminary purchase consideration		$ 17,500,000
Goodwill	$ 9,000,000
Other Current assets	100,000
Current liabilities	300,000
Deferred tax liabilities	3,100,000
California-based Company [Member] | Maximum [Member] | Retention Milestone [Member]
Business Acquisition [Line Items]
Cash paid for acquisition, net of cash acquired	4,400,000
California-based Company [Member] | Completed Technology [Member]
Business Acquisition [Line Items]
Preliminary purchase consideration	$ 11,800,000

Acquisitions - Purchase Price A

Acquisitions - Purchase Price Allocation (Detail) - USD ($) $ in Thousands	Apr. 03, 2018	Mar. 31, 2019	Dec. 31, 2018
Business Acquisition [Line Items]
Goodwill		$ 2,413,172	$ 2,400,390
Total purchase consideration, net of cash acquired		22,463
Completed Technology [Member]
Business Acquisition [Line Items]
Intangible assets		16,900
Jive Communications, Inc [Member]
Business Acquisition [Line Items]
Cash		2,571
Accounts receivable		11,986
Property and equipment		2,492
Prepaid expenses and other current assets		2,511
Other assets		2,255
Deferred revenue		(5,498)
Accounts payable and accrued liabilities		(7,685)
Deferred tax liabilities, net		(25,223)
Goodwill		207,634
Total purchase consideration		344,643
Less: cash acquired		(2,571)
Total purchase consideration, net of cash acquired	$ 342,100	342,072
Jive Communications, Inc [Member] | Completed Technology [Member]
Business Acquisition [Line Items]
Intangible assets		35,200
Jive Communications, Inc [Member] | Customer Relationships [Member]
Business Acquisition [Line Items]
Intangible assets		117,500
Jive Communications, Inc [Member] | Trade Name and Trademark [Member]
Business Acquisition [Line Items]
Intangible assets		$ 900

Acquisitions - Purchase Price_2

Acquisitions - Purchase Price Allocation (Parenthetical) (Detail) - Jive Communications, Inc [Member]	3 Months Ended
	Mar. 31, 2019
Business Acquisition [Line Items]
Weighted average useful life of intangible assets (years)	9 years 8 months 12 days
Completed Technology [Member]
Business Acquisition [Line Items]
Weighted average useful life of intangible assets (years)	9 years
Customer Relationships [Member]
Business Acquisition [Line Items]
Weighted average useful life of intangible assets (years)	10 years
Trade Name and Trademark [Member]
Business Acquisition [Line Items]
Weighted average useful life of intangible assets (years)	2 years

Acquisitions - Summary of Unaud

Acquisitions - Summary of Unaudited Pro Forma Information (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Business Acquisition [Line Items]
Revenue	$ 307,700	$ 279,217
Net income	$ (9,039)	$ 29,712
Net income (loss) per share:
Basic	$ (0.18)	$ 0.57
Diluted	$ (0.18)	$ 0.56
Weighted average shares outstanding:
Basic	50,639	52,457
Diluted	50,639	53,415
Jive Communications, Inc [Member]
Business Acquisition [Line Items]
Revenue		$ 279,200
Net income		$ 29,700
Net income (loss) per share:
Basic		$ 0.57
Diluted		$ 0.56
Weighted average shares outstanding:
Basic		52,500
Diluted		53,400
Pro forma revenue		$ 301,800
Pro forma net income		$ 19,700
Pro forma net income per share:
Basic		$ 0.38
Diluted		$ 0.37
Pro forma weighted average shares outstanding:
Basic		52,500
Diluted		53,400

Divestitures - Additional Infor

Divestitures - Additional Information (Detail) - USD ($) $ in Thousands	Mar. 20, 2018	Mar. 31, 2018	Dec. 31, 2018	Mar. 31, 2019
Divestitures [Line Items]
Gain on disposition of assets		$ 33,910
Xively [Member]
Divestitures [Line Items]
Proceeds from divestiture of business	$ 49,900
Proceeds from divestiture of business, net of cash divested		42,400
Cash receivables held back as an escrow by the buyer		7,500
Receivables recorded at net present value in other current assets				$ 7,400
Gain on disposition of assets		$ 33,900	$ 33,900
Present value received as consideration			49,600
Net assets disposed			13,300
Transaction-related cost			2,400
Goodwill			$ 14,000

Goodwill and Intangible Asset_2

Goodwill and Intangible Assets - Changes in Goodwill (Detail) $ in Thousands	3 Months Ended
	Mar. 31, 2019USD ($)
Goodwill And Intangible Assets Disclosure [Abstract]
Beginning balance	$ 2,400,390
Goodwill resulting from 2019 acquisitions	12,040
Foreign currency translation adjustments	742
Ending balance	$ 2,413,172

Goodwill and Intangible Asset_3

Goodwill and Intangible Assets - Intangible Assets (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Dec. 31, 2018
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 1,564,518	$ 1,542,964
Accumulated Amortization	549,583	482,976
Net Carrying Amount	1,014,935	1,059,988
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	917,747	920,265
Accumulated Amortization	330,147	294,362
Net Carrying Amount	$ 587,600	625,903
Weighted Average Life Remaining (in years)	6 years 3 months 18 days
Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 497,449	481,776
Accumulated Amortization	153,436	132,895
Net Carrying Amount	$ 344,013	348,881
Weighted Average Life Remaining (in years)	6 years 9 months 18 days
Trade Names and Trademarks [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 70,757	70,985
Accumulated Amortization	23,157	20,685
Net Carrying Amount	$ 47,600	50,300
Weighted Average Life Remaining (in years)	6 years 9 months 18 days
Other [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 3,576	3,577
Accumulated Amortization	1,398	1,319
Net Carrying Amount	$ 2,178	2,258
Weighted Average Life Remaining (in years)	6 years 9 months 18 days
Internally Developed Software [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 74,989	66,361
Accumulated Amortization	41,445	33,715
Net Carrying Amount	$ 33,544	$ 32,646
Weighted Average Life Remaining (in years)	1 year 4 months 24 days

Goodwill and Intangible Asset_4

Goodwill and Intangible Assets - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Finite-Lived Intangible Assets [Line Items]
Internally developed software	$ 8.9	$ 7.1
Completed Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets	$ 16.9

Goodwill and Intangible Asset_5

Goodwill and Intangible Assets - Amortization Expense for Intangible Assets (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Acquired Finite Lived Intangible Assets [Line Items]
Total amortization of intangibles	$ 68,503	$ 63,362
Amortization of acquired intangibles	39,499	41,083
Cost of Revenue [Member]
Acquired Finite Lived Intangible Assets [Line Items]
Total amortization of intangibles	29,004	22,279
Amortization of acquired intangibles	20,970	17,885
Cost of Revenue [Member] | Internally Developed Software [Member]
Acquired Finite Lived Intangible Assets [Line Items]
Total amortization of intangibles	8,034	4,394
Operating Expense [Member]
Acquired Finite Lived Intangible Assets [Line Items]
Amortization of acquired intangibles	$ 39,499	$ 41,083

Goodwill and Intangible Asset_6

Goodwill and Intangible Assets - Amortization Expense for Intangible Assets (Parenthetical) (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Acquired Finite Lived Intangible Assets [Line Items]
Amortization of acquired intangibles	$ 39,499	$ 41,083
Cost of Revenue And Operating Expense [Member]
Acquired Finite Lived Intangible Assets [Line Items]
Amortization of acquired intangibles	$ 60,500	$ 59,000

Goodwill and Intangible Asset_7

Goodwill and Intangible Assets - Future Estimated Amortization Expense (Detail) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Finite Lived Intangible Assets Future Amortization Expense [Abstract]
2019 (nine months ending December 31)	$ 201,864
2020	225,045
2021	181,495
2022	144,668
2023	114,738
2024	89,221
Thereafter	57,904
Net Carrying Amount	$ 1,014,935	$ 1,059,988

Accrued Liabilities - Summary o

Accrued Liabilities - Summary of Accrued Liabilities (Detail) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Payables And Accruals [Abstract]
Marketing programs	$ 14,089	$ 13,857
Compensation and benefits-related	45,683	42,024
Acquisition-related	9,374	6,407
Other accrued liabilities	76,043	57,091
Total accrued liabilities	$ 145,189	$ 119,379

Restructuring Charges - Additio

Restructuring Charges - Additional Information (Detail) $ in Thousands	Feb. 11, 2019	Mar. 31, 2019USD ($)Employee	Jun. 30, 2019USD ($)
Restructuring Cost And Reserve [Line Items]
Global restructuring plan, workforce reduction percentage	4.00%
Pre-tax restructuring charges		$ 8,474
Number of employees for termination benefits | Employee		110
Scenario, Forecast [Member]
Restructuring Cost And Reserve [Line Items]
Pre-tax restructuring charges			$ 16,000

Restructuring Charges - Summary

Restructuring Charges - Summary of Restructuring Accrual Activity (Detail) $ in Thousands	3 Months Ended
	Mar. 31, 2019USD ($)
Restructuring Cost And Reserve [Line Items]
Charges to operations, net	$ 8,474
Employee Severance and Related Costs [Member]
Restructuring Cost And Reserve [Line Items]
Charges to operations, net	8,474
Cash disbursements	(1,859)
Foreign exchange impact	(35)
Balance, March 31, 2019	$ 6,580

Leases - Additional Information

Leases - Additional Information (Detail) - USD ($)	Jan. 01, 2019	Mar. 31, 2019	Dec. 31, 2018
Lessee Lease Description [Line Items]
Operating lease assets		$ 108,530,000
Operating lease liabilities		114,317,000
Retained earnings		$ 58,487,000	$ 84,043,000
Operating lease, Allocation of lease and nonlease component description		As a practical expedient permitted under Topic 842, the Company has elected to account for the lease and non-lease components as a single lease component for all leases of which it is the lessee. Lease payments, which may include lease and non-lease components, are included in the measurement of the Company’s lease liabilities to the extent that such payments are either fixed amounts or variable amounts that depend on a rate or index as stipulated in the lease contract.
Operating lease, Determination of discount rate description		When the Company cannot readily determine the rate implicit in the lease, the Company determines its incremental borrowing rate by using the rate of interest that it would have to pay to borrow on a collateralized basis over a similar term, an amount equal to the lease payments in a similar economic environment. On January 1, 2019, the discount rate used on existing operating leases at adoption, which had remaining lease terms between 2 and 12 years, ranged from 4.8-6.7%. For new or renewed leases starting in 2019, the discount rate is determined based on the Company’s incremental borrowing rate adjusted for the lease term including any reasonably certain renewal periods.
Operating lease, existence of option to extend		true
Reduction of right of use asset		$ 3,500,000
Reduction of the operating lease liability		$ 3,800,000
Operating leases, future minimum payments			$ 153,742,000
Minimum [Member]
Lessee Lease Description [Line Items]
Operating lease, remaining lease term	2 years
Operating lease discount rate	4.80%
Operating lease, term of contract		2 years
Operating lease, options to extend lease term		1 year
Maximum [Member]
Lessee Lease Description [Line Items]
Operating lease, remaining lease term	12 years
Operating lease discount rate	6.70%
Operating lease, term of contract		15 years
Operating lease, options to extend lease term		5 years
ASU 2016-02 [Member]
Lessee Lease Description [Line Items]
Operating lease assets	$ 117,300,000	$ 117,300,000
Operating lease liabilities	123,400,000	$ 123,400,000
Retained earnings	$ 0

Leases - Schedule of Maturity o

Leases - Schedule of Maturity of Operating Lease Liabilities (Detail) $ in Thousands	Mar. 31, 2019USD ($)
Leases [Abstract]
2019 (nine months ending December 31)	$ 16,132
2020	23,640
2021	22,158
2022	20,189
2023	15,193
2024	10,555
Thereafter	35,697
Total future minimum lease payments	143,564
Less imputed interest	29,247
Total operating lease liabilities	114,317
Included in the condensed consolidated balance sheet:
Current operating lease liabilities	16,024
Non-current operating lease liabilities	98,293
Total operating lease liabilities	$ 114,317

Leases - Components of Total Le

Leases - Components of Total Lease Cost (Detail) $ in Thousands	3 Months Ended
	Mar. 31, 2019USD ($)
Leases [Abstract]
Operating lease expense	$ 5,923
Variable lease expense	1,058
Short-term lease expense	147
Total lease expense	$ 7,128

Leases - Supplemental Disclosur

Leases - Supplemental Disclosure for Statement of Cash Flows related to Operating Leases (Detail) $ in Thousands	3 Months Ended
	Mar. 31, 2019USD ($)
Leases [Abstract]
Operating cash flows from operating leases	$ (5,298)

Leases - Summary of Additional

Leases - Summary of Additional Information Related to Operating Leases (Detail)	Mar. 31, 2019
Leases [Abstract]
Weighted-average remaining lease term — operating leases	7 years 1 month 6 days
Weighted-average discount rate — operating leases	6.00%

Leases - Schedule of Minimum Fu

Leases - Schedule of Minimum Future Lease Payments Receivable (Detail) $ in Thousands	Dec. 31, 2018USD ($)
Leases Operating [Abstract]
2019	$ 23,969
2020	24,079
2021	22,253
2022	20,165
2023	14,986
Thereafter	48,290
Total	$ 153,742

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($)	3 Months Ended		12 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Income Taxes [Line Items]
(Provision for) benefit from income taxes	$ 99,000	$ 12,723,000
Income (loss) before income taxes	$ (8,940,000)	42,435,000
Gain on disposition of assets		33,910,000
Adjustment to one time mandatory transition tax		700,000
Open tax year	2017
Uncertain tax positions	$ 5,400,000		$ 4,800,000
Interest expense	$ 44,000	25,000
Discrete Tax Benefits [Member]
Income Taxes [Line Items]
Effective income tax rates, excess benefit on stock compensation		1,700,000
Discrete Integration Related Activity [Member]
Income Taxes [Line Items]
Effective income tax rates, (provision for) benefit from income taxes		1,400,000
Xively [Member]
Income Taxes [Line Items]
Income tax provision on a pre-tax gain on disposition of assets		9,200,000
Gain on disposition of assets		$ 33,900,000	$ 33,900,000

Common Stock and Equity - Addit

Common Stock and Equity - Additional Information (Detail) - USD ($)	Mar. 12, 2019	Feb. 23, 2017	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2018
Class of Stock [Line Items]
Capital return plan term		3 years
Cash dividend per common stock paid	$ 0.325		$ 0.325	$ 0.30	$ 0.30	$ 0.30	$ 0.30	$ 1.20
Dividend paid date			Mar. 12, 2019
Dividend paid, stockholders on record date			Feb. 25, 2019
Number of shares repurchased			713,985				404,022
Average price of repurchased shares			$ 81				$ 121.38
Total cost of shares repurchased			$ 57,832,000				$ 49,039,000
Maximum [Member]
Class of Stock [Line Items]
Capital return through share repurchases and dividends		$ 700,000,000

Common Stock and Equity - Summa

Common Stock and Equity - Summary of Dividend Declared and Paid (Detail) - USD ($) $ / shares in Units, $ in Thousands	Mar. 12, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2018
Equity [Abstract]
Dividends Per Share	$ 0.325	$ 0.325	$ 0.30	$ 0.30	$ 0.30	$ 0.30	$ 1.20
Dividends paid on common stock		$ 16,517	$ 15,300	$ 15,500	$ 15,600	$ 15,738	$ 62,200

Stock Incentive Plan - Addition

Stock Incentive Plan - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions	1 Months Ended	3 Months Ended
	Feb. 28, 2019	Mar. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for grant		6,400,000
Stock options, number of shares outstanding		44,154
Stock options, weighted average exercise price		$ 29.79
Stock options, aggregate intrinsic value		$ 2.2
Stock options, weighted average remaining contractual term		3 years
Fair value of common stock		$ 80.10
Performance period		3 years
Unrecognized share-based compensation cost		$ 91
Share-based compensation cost not yet recognized period for recognition		2 years
Time-based Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Period of options vested		3 years
Market Based Restricted Stock Units (RSUs) [Member] | Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Period of options vested		2 years
Market Based Restricted Stock Units (RSUs) [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Period of options vested		3 years
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Period of options vested		4 years
Period of expiration		10 years
TSR Based Restricted Stock Units [Member] | Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance period		2 years
Vesting percentage		0.00%
TSR Based Restricted Stock Units [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance period		3 years
Vesting percentage		200.00%
TSR Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of stock units, outstanding		135,313
Number of restricted stock units, vested	18,750
Total shareholder return shares, percentage	176.00%
Number of additional restricted stock units, earned and vested	14,250
Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of restricted stock units, vested	63,955

Stock Incentive Plan - Summary

Stock Incentive Plan - Summary of Restricted Stock Awards Granted (Detail)	3 Months Ended
	Mar. 31, 2019shares
Time-based Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of restricted stock units, granted	106,000

Stock Incentive Plan - Summar_2

Stock Incentive Plan - Summary of Restricted Stock Awards Granted (Parenthetical) (Detail) - Time-based Restricted Stock Units [Member]	3 Months Ended
	Mar. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Period of options vested	3 years
Vesting Period One [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage	33.33%
Vesting Period Two [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage	33.33%
Vesting Period Three [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage	33.33%

Stock Incentive Plan - Schedule

Stock Incentive Plan - Schedule of Restricted Stock Unit Activity Including Market-based Units (Detail) - Restricted Stock Units RSU and Market Based TSR Units [Member]	3 Months Ended
	Mar. 31, 2019$ / sharesshares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Shares Underlying Restricted Stock Units, Unvested, Beginning balance	1,548,000
Number of Shares Underlying Restricted Stock Units, granted	106,000
Number of Shares Underlying Restricted Stock Units, earned	14,000
Number of Shares Underlying Restricted Stock Units, vested	(286,000)
Number of Shares Underlying Restricted Stock Units, forfeited	(47,000)
Number of Shares Underlying Restricted Stock Units, Unvested, Ending balance	1,335,000
Unvested as of January 1, 2019 | $ / shares	$ 100.55
Restricted stock units granted | $ / shares	82.27
Restricted stock units vested | $ / shares	86.60
Restricted stock units forfeited | $ / shares	105.37
Unvested as of March 31, 2019 | $ / shares	$ 101.53

Stock Incentive Plan - Summar_3

Stock Incentive Plan - Summary of Granted Restricted stock Units (Detail) - shares	Apr. 01, 2019	Mar. 31, 2019
Time-based Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of restricted stock units granted		106,000
Time-based Restricted Stock Units [Member] | Subsequent Event [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of restricted stock units granted	793,000
Performance-Based Restricted Stock Units [Member] | Subsequent Event [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of restricted stock units granted	54,000
Market-Based TSR Units [Member] | Subsequent Event [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of restricted stock units granted	54,000

Stock Incentive Plan - Summar_4

Stock Incentive Plan - Summary of Granted Restricted stock Units (Parenthetical) (Detail)	Apr. 01, 2019	Mar. 31, 2019
Time-based Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Period of options vested		3 years
Subsequent Event [Member] | Time-based Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Period of options vested	3 years
Subsequent Event [Member] | Performance-Based Restricted Stock Units [Member] | Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage	0.00%
Subsequent Event [Member] | Performance-Based Restricted Stock Units [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage	200.00%
Subsequent Event [Member] | Market-Based TSR Units [Member] | Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage	0.00%
Subsequent Event [Member] | Market-Based TSR Units [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage	200.00%
Vesting Period One [Member] | Time-based Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage		33.33%
Vesting Period One [Member] | Subsequent Event [Member] | Time-based Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage	33.33%
Vesting Period Two [Member] | Time-based Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage		33.33%
Vesting Period Two [Member] | Subsequent Event [Member] | Time-based Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage	33.33%
Vesting Period Three [Member] | Time-based Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage		33.33%
Vesting Period Three [Member] | Subsequent Event [Member] | Time-based Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage	33.33%

Stock Incentive Plan - Schedu_2

Stock Incentive Plan - Schedule of Stock Based Compensation Allocated to Expense (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock based compensation expense	$ 15,031	$ 15,966
Cost of Revenue [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock based compensation expense	980	1,216
Research and Development [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock based compensation expense	4,705	4,943
Sales and Marketing [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock based compensation expense	3,148	3,695
General and Administrative [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock based compensation expense	$ 6,198	$ 6,112

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Income (Loss) - Additional Information (Detail) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income (loss)	$ (492)	$ 2,133
Percentage of current and prior year earnings	100.00%
Foreign Currency Translation Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income (loss)	$ (500)	$ 2,100

Credit Facility - Additional In

Credit Facility - Additional Information (Detail) - Revolving Facility [Member] - USD ($)	Apr. 11, 2019	Feb. 01, 2017	Feb. 18, 2015	Mar. 31, 2019	Dec. 31, 2018	Apr. 03, 2018	Apr. 02, 2018	Jan. 06, 2016
Jive Communications, Inc [Member]
Line Of Credit Facility [Line Items]
Line of Credit Facility, Amount Outstanding						$ 200,000,000
Secured Debt [Member] | Multi Currency Credit Agreement [Member]
Line Of Credit Facility [Line Items]
Line of credit facility, expiration date			Feb. 1, 2022
Maximum amount of borrowing		$ 400,000,000						$ 150,000,000
Additional credit facility subject to further commitment upon exercise of option		$ 200,000,000
Line of Credit Facility, Amount Outstanding				$ 200,000,000
Average interest rate on borrowings outstanding				3.80%
Secured Debt [Member] | Multi Currency Credit Agreement [Member] | Other Assets [Member]
Line Of Credit Facility [Line Items]
Capitalized origination costs				$ 1,500,000	$ 1,700,000
Secured Debt [Member] | Multi Currency Credit Agreement [Member] | Subsequent Event [Member]
Line Of Credit Facility [Line Items]
Line of credit interest rate	3.75%
Secured Debt [Member] | Multi Currency Credit Agreement [Member] | Minimum [Member]
Line Of Credit Facility [Line Items]
Variable interest rate reset period				30 days
Credit facility commitment fees				0.15%
Secured Debt [Member] | Multi Currency Credit Agreement [Member] | Maximum [Member]
Line Of Credit Facility [Line Items]
Variable interest rate reset period				180 days
Credit facility commitment fees				0.30%
Secured Debt [Member] | Jive Communications, Inc [Member] | Multi Currency Credit Agreement [Member]
Line Of Credit Facility [Line Items]
Line of Credit Facility, Amount Outstanding							$ 200,000,000

Subsequent Events - Additional

Subsequent Events - Additional Information (Detail) - $ / shares	Apr. 25, 2019	Mar. 31, 2019	Mar. 31, 2018
Subsequent Event [Line Items]
Cash dividends declared per common share		$ 0.325	$ 0.30
Date of dividend payable		Mar. 12, 2019
Dividend payable, record date		Feb. 25, 2019
Subsequent Event [Member]
Subsequent Event [Line Items]
Dividend payable, declared date	Apr. 25, 2019
Cash dividends declared per common share	$ 0.325
Date of dividend payable	May 24, 2019
Dividend payable, record date	May 8, 2019