TechTarget (TTGT) 10-K 13 Mar 19 2018 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Feb. 28, 2019	Jun. 30, 2018
Document And Entity Information [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2018
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	FY
Trading Symbol	TTGT
Entity Registrant Name	TechTarget Inc
Entity Central Index Key	0001293282
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	No
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Accelerated Filer
Entity Emerging Growth Company	false
Entity Small Business	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		27,756,336
Entity Public Float			$ 516.1

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 34,673	$ 25,966
Short-term investments	500	7,650
Accounts receivable, net of allowance for doubtful accounts of $2,099 and $1,783 as of December 31, 2018 and 2017, respectively	30,042	29,601
Prepaid taxes	1,834	1,303
Prepaid expenses and other current assets	3,069	3,088
Total current assets	70,118	67,608
Property and equipment, net	10,901	9,786
Long-term investments		496
Goodwill	93,687	93,793
Intangible assets, net	849	506
Deferred tax assets	55	98
Other assets	853	882
Total assets	176,463	173,169
Current liabilities:
Accounts payable	1,871	1,542
Current portion of term loan	1,241	9,888
Accrued expenses and other current liabilities	3,260	3,343
Accrued compensation expenses	2,432	1,397
Income taxes payable	176	218
Contract liabilities	5,573	7,598
Total current liabilities	14,553	23,986
Long-term liabilities:
Long-term portion of term loan	23,714	22,339
Deferred rent	4,949	5,259
Deferred tax liabilities	662	838
Total liabilities	43,878	52,422
Commitments and contingencies (See Note 10)
Stockholders’ equity:
Preferred stock, 5,000,000 shares authorized; no shares issued or outstanding
Common stock, $0.001 par value per share, 100,000,000 shares authorized; 54,117,325 shares issued and 27,791,045 shares outstanding at December 31, 2018; 53,338,297 shares issued and 27,483,115 shares outstanding at December 31, 2017	54	53
Treasury stock, 26,326,280 and 25,855,182 shares at December 31, 2018 and 2017, respectively, at cost	(177,905)	(170,816)
Additional paid-in capital	307,014	300,763
Accumulated other comprehensive income (loss)	(215)	65
Retained earnings (accumulated deficit)	3,637	(9,318)
Total stockholders’ equity	132,585	120,747
Total liabilities and stockholders’ equity	$ 176,463	$ 173,169

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Statement Of Financial Position [Abstract]
Allowance for doubtful accounts, accounts receivable	$ 2,099	$ 1,783
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	100,000,000	100,000,000
Common stock, shares issued	54,117,325	53,338,297
Common stock, shares outstanding	27,791,045	27,483,115
Treasury stock, shares	26,326,280	25,855,182

Consolidated Statements of Inco

Consolidated Statements of Income and Comprehensive Income - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Revenues:
Total revenues		$ 121,333	$ 108,556	$ 106,625
Cost of revenues:
Total cost of revenues		28,959	28,336	30,217
Gross profit		92,374	80,220	76,408
Operating expenses:
Selling and marketing	[1]	47,779	44,747	44,316
Product development	[1]	8,869	8,215	8,038
General and administrative	[1]	14,557	12,212	12,370
Depreciation and amortization		4,548	4,636	4,893
Total operating expenses		75,753	69,810	69,617
Operating income		16,621	10,410	6,791
Interest and other expense, net		(1,778)	(693)	(1,774)
Income before provision for income taxes		14,843	9,717	5,017
Provision for income taxes		1,888	2,914	2,598
Net income		12,955	6,803	2,419
Other comprehensive income (loss), net of tax:
Unrealized gain (loss) on investments (net of tax (provision) benefit of $(11), $(7), and $6, respectively)		15	13	(10)
Foreign currency translation adjustments		(295)	300	84
Other comprehensive income (loss)		(280)	313	74
Comprehensive income		$ 12,675	$ 7,116	$ 2,493
Net income per common share:
Basic		$ 0.47	$ 0.25	$ 0.08
Diluted		$ 0.45	$ 0.24	$ 0.08
Weighted average common shares outstanding:
Basic		27,738,178	27,550,044	29,953,798
Diluted		28,652,814	28,271,384	30,773,532
Online [Member]
Revenues:
Total revenues		$ 121,333	$ 108,388	$ 101,827
Cost of revenues:
Total cost of revenues	[1]	$ 28,959	28,295	27,545
Events [Member]
Revenues:
Total revenues			168	4,798
Cost of revenues:
Total cost of revenues			$ 41	$ 2,672
[1]	Amounts include stock-based compensation expense as follows: Cost of online revenues 159 $43 $112 Selling and marketing 4,899 $4,120 $4,119 Product development 200 $112 $159 General and administrative 3,855 $2,637 $2,462

Consolidated Statements of In_2

Consolidated Statements of Income and Comprehensive Income (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Unrealized gain (loss) on investments, tax effect	$ 11	$ 7	$ (6)
Cost of Online Revenues [Member]
Allocated stock-based compensation expense	159	43	112
Selling and Marketing [Member]
Allocated stock-based compensation expense	4,899	4,120	4,119
Product Development [Member]
Allocated stock-based compensation expense	200	112	159
General and Administrative [Member]
Allocated stock-based compensation expense	$ 3,855	$ 2,637	$ 2,462

Consolidated Statements of Stoc

Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock [Member]	Treasury Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Other Comprehensive (Loss) Income [Member]	Retained Earnings (Accumulated Deficit) [Member]
Beginning balance at Dec. 31, 2015	$ 160,001	$ 51	$ (113,949)	$ 293,003	$ (322)	$ (18,782)
Beginning balance, shares at Dec. 31, 2015		50,927,426	18,887,573
Issuance of common stock from stock options and restricted stock units	4,192	$ 1		4,191
Issuance of common stock from stock options and restricted stock units, shares		1,673,858
Purchase of common stock through stock repurchase program	(7,988)		$ (7,988)
Purchase of common stock through stock repurchase program, shares			980,329
Purchase of common stock through tender offer	(40,794)		$ (40,794)
Purchase of common stock through tender offer, shares			5,237,843
Excess tax benefit and shortfalls — stock options	(2,747)			(2,747)
Stock-based compensation expense	6,852			6,852
Tax withholdings related to net share settlement of RSU’s	(4,446)			(4,446)
Unrealized gain (loss) on investments	(10)				(10)
Unrealized gain (loss) on foreign currency translation	84				84
Net income	2,419					2,419
Ending balance at Dec. 31, 2016	117,563	$ 52	$ (162,731)	296,853	(248)	(16,363)
Ending balance, shares at Dec. 31, 2016		52,601,284	25,105,745
Issuance of common stock from stock options and restricted stock units	942	$ 1		941
Issuance of common stock from stock options and restricted stock units, shares		737,013
Purchase of common stock through stock repurchase program	(8,085)		$ (8,085)
Purchase of common stock through stock repurchase program, shares			749,437
Shelf registration and other fees	(3)			(3)
Stock-based compensation expense	6,912			6,912
Tax withholdings related to net share settlement of RSU’s	(3,940)			(3,940)
Unrealized gain (loss) on investments	13				13
Unrealized gain (loss) on foreign currency translation	300				300
Reclassification for adoption of ASU 2016-09	242					242
Net income	6,803					6,803
Ending balance at Dec. 31, 2017	120,747	$ 53	$ (170,816)	300,763	65	(9,318)
Ending balance, shares at Dec. 31, 2017		53,338,297	25,855,182
Issuance of common stock from stock options and restricted stock units	1,005	$ 1		1,004
Issuance of common stock from stock options and restricted stock units, shares		779,028
Purchase of common stock through stock repurchase program	(7,089)		$ (7,089)
Purchase of common stock through stock repurchase program, shares			471,098
Stock-based compensation expense	8,397			8,397
Tax withholdings related to net share settlement of RSU’s	(3,150)			(3,150)
Unrealized gain (loss) on investments	15				15
Unrealized gain (loss) on foreign currency translation	(295)				(295)
Net income	12,955					12,955
Ending balance at Dec. 31, 2018	$ 132,585	$ 54	$ (177,905)	$ 307,014	$ (215)	$ 3,637
Ending balance, shares at Dec. 31, 2018		54,117,325	26,326,280

Consolidated Statements of St_2

Consolidated Statements of Stockholders' Equity (Parenthetical) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Purchase of common stock through tender offer, related costs			$ 200
Tax provision (benefit) on unrealized gain (loss) on investments	$ 11,000	$ 7,000	(6,000)
Accumulated Other Comprehensive (Loss) Income [Member]
Tax provision (benefit) on unrealized gain (loss) on investments	$ 11,000	$ 7,000	$ (6,000)

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Operating Activities:
Net income	$ 12,955	$ 6,803	$ 2,419
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	4,548	4,636	4,893
Provision for bad debt	986	806	894
Amortization of investment premiums	73	262	308
Stock-based compensation	9,113	6,912	6,852
Amortization of debt issuance costs	298	109	60
Deferred tax provision	(137)	895	1,125
Changes in operating assets and liabilities:
Accounts receivable	(1,548)	(7,855)	3,107
Prepaid expenses and other current assets	(150)	(1,105)	343
Other assets	11	45	(52)
Accounts payable	332	(810)	299
Income taxes payable	(398)	2,744	722
Accrued expenses and other current liabilities	(212)	(157)	(987)
Accrued compensation expenses	336	670	40
Contract liabilities	(2,025)	1,519	(1,516)
Other liabilities	(305)	3,175	(162)
Net cash provided by operating activities	23,877	18,649	18,345
Investing activities:
Purchases of property and equipment, and other capitalized assets	(5,538)	(4,137)	(4,410)
Purchases of investments		(500)	(9,766)
Proceeds from sales and maturities of investments	7,600	10,900	10,560
Acquisitions of business net	(370)
Net cash provided by (used in) investing activities	1,692	6,263	(3,616)
Financing activities:
Tax withholdings related to net share settlements	(3,150)	(3,940)	(4,446)
Purchase of treasury shares and related costs	(7,089)	(8,085)	(7,988)
Purchase of shares through tender offer			(40,794)
Registration and other fees		(3)
Payment of earnout liabilities			(459)
Proceeds from exercise of stock options	1,005	942	4,192
Term loan proceeds	25,000		50,000
Debt issuance costs	(44)	(50)	(367)
Term loan principal payment	(32,500)	(6,250)	(11,250)
Net cash used in financing activities	(16,778)	(17,386)	(11,112)
Effect of exchange rate changes on cash and cash equivalents	(84)	(45)	85
Net increase in cash and cash equivalents	8,707	7,481	3,702
Cash and cash equivalents at beginning of period	25,966	18,485	14,783
Cash and cash equivalents at end of period	34,673	25,966	18,485
Supplemental disclosure of cash flow information:
Cash (received) paid for taxes, net	$ 2,625	(43)	$ 711
Property and equipment included in accounts payable and in accrued expenses and other liabilities		$ 959

Organization and Operations

Organization and Operations	12 Months Ended
	Dec. 31, 2018
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Organization and Operations	1. Organization and Operations TechTarget, Inc. and its subsidiaries (the “Company”) is a leading provider of specialized online content for buyers of enterprise information technology (“IT”) products and services, and a leading provider of purchase-intent marketing and sales services for enterprise technology vendors. The Company’s service offerings enable technology vendors to better identify, reach and influence corporate IT decision makers actively researching specific IT purchases. The Company improves vendors’ ability to impact these audiences for business growth using advanced targeting, analytics and data services complemented with customized marketing programs that integrate demand generation and brand advertising techniques. The Company operates a network of over 140 websites, each of which focuses on a specific IT sector such as storage, security or networking. IT and business professionals have become increasingly specialized, and they have come to rely on the Company’s sector-specific websites for purchasing decision support. The Company’s content platform enables IT and business professionals to navigate the complex and rapidly changing IT landscape where purchasing decisions can have significant financial and operational consequences. At critical stages of the purchase decision process, these content offerings through different channels meet IT and business professionals’ needs for expert, peer and IT vendor information and provide a platform on which IT vendors can launch targeted marketing campaigns which generate measurable return on investment. Based upon the logical clustering of members’ respective job responsibilities and the marketing focus of the products being promoted by the Company’s customers, the Company categorizes its content offerings to address the key market opportunities and audience extensions across a portfolio of distinct market categories: Security; Networking; Storage; Data Center and Virtualization Technologies; CIO/IT Strategy; Business Applications and Analytics; Application Architecture and Development; and ANCL Channel.

Summary of Significant Accounti

Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2018
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	2. Summary of Significant Accounting Policies The accompanying consolidated financial statements reflect the application of certain significant accounting policies as described below and elsewhere in these Notes to Consolidated Financial Statements. Principles of Consolidation The accompanying Consolidated Financial Statements include the accounts of the Company and its wholly-owned subsidiaries, TechTarget Securities Corporation (“TSC”), TechTarget Limited, TechTarget (HK) Limited (“TTGT HK”), TechTarget (Australia) Pty Ltd., TechTarget (Singapore) Pte Ltd., E-Magine Médias SAS (“LeMagIT”) and TechTarget Germany GmbH. TSC is a Massachusetts corporation. TechTarget Limited is a subsidiary doing business principally in the United Kingdom. TTGT HK is a subsidiary incorporated in Hong Kong in order to facilitate the Company’s activities in the Asia-Pacific region. In 2018, TechTarget modified its PRC operations consolidating its activities with other TechTarget locations. TechTarget (Beijing) Information Technology Consulting Co. Ltd. (“TTGT Consulting”) and Keji Wangtuo Information Technology Co., Ltd., (“KWIT”), which were incorporated under the laws of the People’s Republic of China (“PRC”), were closed during 2018. TechTarget (Australia) Pty Ltd. and TechTarget (Singapore) Pte Ltd. are the entities through which the Company does business in Australia and Singapore, respectively; LeMagIT and TechTarget Germany GmbH, both wholly-owned subsidiaries of TechTarget Limited, are entities through which the Company does business in France and Germany, respectively. Reclassifications There were no reclassifications out of accumulated other comprehensive income in the years ended December 31, 2018, 2017, or 2016. Use of Estimates The preparation of consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosures of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. On an ongoing basis, the Company evaluates its estimates, including those related to revenues, long-lived assets, goodwill, the allowance for doubtful accounts, stock-based compensation, earnouts, self-insurance accruals, the allocation of purchase price to intangibles and goodwill, and income taxes. Estimates of the carrying value of certain assets and liabilities are based on historical experience and on various other assumptions that the Company believes to be reasonable. Actual results could differ from those estimates. Revenue Recognition On January 1, 2018, we adopted Topic 606 using the modified retrospective method applied to those contracts which were not completed as of January 1, 2018. Results for reporting periods beginning after January 1, 2018 are presented under Topic 606, while prior period amounts are not adjusted and continue to be reported in accordance with our historic accounting under Topic 605. Revenue Recognition under Accounting Standards Codification (“ASC”) 605, Revenue Recognition The Company generates its revenues from the sale of targeted marketing and advertising campaigns, which are delivered via its network of websites, data analytics solutions, and, historically, events. In all cases, revenue is recognized only when the price is fixed or determinable, persuasive evidence of an arrangement exists, the service is performed and collectability of the resulting receivable is reasonably assured. We recognized revenue from events in the period in which the event occurs. The majority of our events were free to qualified attendees; however, certain events were based on a paid attendee model. We recognized revenue for paid attendee events upon completion of the event. As previously disclosed, we have phased out our events product line. Revenue Recognition under ASC 606, Revenue from Contacts with Customers (“ASC 606”) The Company generates its revenues from the sale of targeted marketing and advertising campaigns, which it delivers via its network of websites and data analytic solutions. Revenue is recognized when performance obligations are satisfied by transferring promised goods or services to customers, as determined by applying a five-step process consisting of: a) identifying the contract, or contracts, with a customer, b) identifying the performance obligations in the contract, c) determining the transaction price, d) allocating the transaction price to the performance obligations in the contract, and e) recognizing revenue when, or as, performance obligations are satisfied. The Company’s offerings consist of: IT Deal Alert provides a suite of products that leverages detailed purchase intent data that we collect about end-user IT organizations. Through proprietary scoring methodologies, we use this insight to help our customers identify and prioritize accounts. We provide this insight primarily through Priority Engine TM TM TM TM Core Online consists primarily of demand solutions, brand solutions, and custom content. Demand solutions offerings provide the Company’s customers the opportunity to maximize return on investment by capturing sales leads from the distribution and promotion of content to its audience. Demand solutions may contain the following components: White Papers, Webcasts, Podcasts, Videocasts and Virtual Trade Shows, and Content Sponsorship, which the Company may utilize at its discretion. Brand Solutions provide the Company’s customers to target audiences of IT and business professionals actively researching information related to their products and services. This can be accomplished through on-network or off-network branding as well as through the hosting of Microsites. The Company will at times create white papers, case studies, webcasts, or videos to our customers’ specifications through its Custom Content team (“custom content”). Revenue from brand and demand solutions is primarily recognized when the transfer of control occurs. Certain of the contracts within brand and demand solutions are duration-based campaigns which, in the event of customer cancellation, provide the Company with an enforceable right to a proportional payment for the portion of the campaign based on services provided. Accordingly, revenue from duration-based campaigns are recognized using a time-based measure of progress, which the Company believes best depicts how it satisfies its performance obligations in these arrangements as control is continuously transferred throughout the contract period. Revenue from Microsites is recognized ratably over the life of the contract. To determine standalone selling price for the individual performance obligations in the arrangement, the Company uses an estimate of the observable selling prices in separate transactions. The Company establishes best estimates considering multiple factors including, but not limited to, class of client, size of transaction, available inventory, pricing strategies and market conditions. The Company uses a range of amounts to estimate stand-alone selling price when it sells the goods and services separately and needs to determine whether a discount is to be allocated based upon the relative stand-alone selling price to the various goods and services. J udgment is required to determine the standalone selling price for each distinct performance obligation. Fair Value of Financial Instruments Financial instruments consist of cash and cash equivalents, short-term and long-term investments, accounts receivable, accounts payable, long-term debt and contingent consideration. Due to their short-term nature and liquidity, the carrying value of these instruments, with the exception of contingent consideration and long-term debt, approximates their estimated fair values. See Note 4 for further information on the fair value of the Company’s investments. The Company classifies all of its short-term and long-term investments as available-for-sale. Amounts outstanding under the Company’s long-term debt are subject to variable rates of interest based on current market rates, and as such, the Company believes the carrying amount of these obligations approximates fair value. The fair value of contingent consideration was estimated using a discounted cash flow method described in Note 5. Long-Lived Assets , Long-lived assets consist primarily of property and equipment, capitalized software, goodwill and other intangible assets. The Company reviews long-lived assets, including property and equipment and finite intangible assets, for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. Conditions that would trigger an impairment assessment include, but are not limited to, a significant adverse change in legal factors or business climate that could affect the value of an asset or an adverse action or a significant decrease in the market price. A specifically identified intangible asset must be recorded as a separate asset from goodwill if either of the following two criteria is met: (1) the intangible asset acquired arises from contractual or other legal rights; or (2) the intangible asset is separable. Accordingly, intangible assets consist of specifically identified intangible assets. Goodwill is the excess of any purchase price over the estimated fair value of net tangible and intangible assets acquired. Goodwill and indefinite-lived intangible assets are not amortized but are reviewed annually for impairment or more frequently if impairment indicators arise. Separable intangible assets that are not deemed to have an indefinite life are amortized over their estimated useful lives, which range from eighteen months to seventeen years, using methods of amortization that are expected to reflect the estimated pattern of economic use, and are reviewed for impairment when events or changes in circumstances suggest that the assets may not be recoverable. Consistent with the Company’s determination that it has a single reporting segment, it has been determined that there is a single reporting unit and goodwill is therefore tested for impairment at the entity level. The Company performs its annual test of impairment of goodwill as of December 31st of each year and whenever events or changes in circumstances suggest that the carrying amount may not be recoverable using the two-step process required by ASC 350, Intangibles – Goodwill and Other Based on the aforementioned evaluation, the Company believes that, as of the balance sheet date presented, none of the Company’s goodwill or other long-lived assets was impaired. The Company did not have any intangible assets with indefinite lives as of December 31, 2018 or 2017. Allowance for Doubtful Accounts The Company reduces gross trade accounts receivable for an allowance for doubtful accounts. The allowance for doubtful accounts is the Company’s best estimate of the amount of probable credit losses in its existing accounts receivable. The allowance for doubtful accounts is reviewed on a regular basis, and all past due balances are reviewed individually for collectability. Account balances are charged against the allowance after all means of collection have been exhausted and the potential for recovery is considered remote. Provisions for doubtful accounts are recorded in general and administrative expense. Below is a summary of the changes in the Company’s allowance for doubtful accounts for the years ended December 31, 2018, 2017, and 2016. Balance at Beginning of Year Provision Acquired in Business Combinations Write-offs, Net of Recoveries Balance at End of Year Year ended December 31, 2016 $ 1,715 $ 894 — $ (648 ) $ 1,961 Year ended December 31, 2017 $ 1,961 $ 806 — $ (984 ) $ 1,783 Year ended December 31, 2018 $ 1,783 $ 986 — $ (670 ) $ 2,099 Property and Equipment and Other Capitalized Assets Property and equipment and other capitalized assets are stated at cost. Property and equipment acquired through acquisitions of businesses are initially recorded at fair value. Depreciation is calculated on the straight-line method based on the month the asset is placed in service over the following estimated useful lives: Estimated Useful Life Furniture and fixtures 5 - 10 years Computer equipment and software 3 years Internal-use software and website development costs 3 - 5 years Leasehold improvements Shorter of useful life or remaining duration of lease Property and equipment and other capitalized assets consist of the following: As of December 31, 2018 2017 Furniture and fixtures $ 1,266 $ 1,554 Computer equipment and software 4,201 3,863 Leasehold improvements 3,844 2,887 Internal-use software and website development costs 29,692 26,702 39,003 35,006 Less: accumulated depreciation and amortization (28,102 ) (25,220 ) $ 10,901 $ 9,786 Depreciation expense was $4.4 million, $4.5 million, and $4.1 million for the years ended December 31, 2018, 2017, and 2016, respectively. Repairs and maintenance charges that do not increase the useful life of the assets are charged to operations as incurred. The Company wrote off approximately $1.5 million, $0.6 million, and $1.1 million of fully depreciated assets that were no longer in service during 2018, 2017, and 2016, respectively. Depreciation expense is classified as a component of operating expense in the Company’s results of operations. Internal-Use Software and Website Development Costs The Company capitalizes costs incurred during the development of its website applications and infrastructure as well as certain costs relating to internal-use software. The Company begins to capitalize costs to develop software and website applications when planning stage efforts are successfully completed, management has authorized and committed project funding, and it is probable that the project will be completed and the software will be used as intended. Judgment is required in determining the point at which various projects enter the state at which costs may be capitalized, in assessing the ongoing value of the capitalized costs and in determining the estimated useful lives over which the costs are amortized, which is generally four years. To the extent that the Company changes the manner in which it develops and tests new features and functionalities related to its websites, assesses the ongoing value of capitalized assets, or determines the estimated useful lives over which the costs are amortized, the amount of website development costs it capitalizes and amortizes in future periods would be impacted. The estimated useful life of costs capitalized is evaluated for each specific project. Capitalized internal-use software and website development costs are reviewed for recoverability whenever events or changes in circumstances indicate that the carrying amount of the asset may not be recoverable. An impairment loss would be recognized only if the carrying amount of the asset is not recoverable and exceeds its fair value. The Company capitalized internal-use software and website development costs of $3.0 million, $2.9 million, and $2.8 million for the years ended December 31, 2018, 2017, and 2016, respectively. Concentrations of Credit Risk and Off-Balance Sheet Risk Financial instruments that potentially expose the Company to concentrations of credit risk consist mainly of cash and cash equivalents, investments and accounts receivable. The Company maintains its cash and cash equivalents and investments principally in accredited financial institutions of high credit standing. The Company routinely assesses the credit worthiness of its customers. The Company generally has not experienced any significant losses related to individual customers or groups of customers in any particular industry or area. The Company does not require collateral. Due to these factors, no additional credit risk beyond amounts provided for collection losses is believed by one management to be probable in the Company’s accounts receivable. At December 31, 2018, no customer represented 10% of total accounts receivable. One single customer represented 10% of total accounts receivable at December 31, 2017. No single customer accounted for 10% or more of total revenues in the years ended December 31, 2018, 2017, or 2016. Income Taxes The Company’s deferred tax assets and liabilities are recognized based on temporary differences between the financial reporting and income tax bases of assets and liabilities using statutory rates. A valuation allowance is established against net deferred tax assets if, based upon the weight of available evidence, it is more likely than not that some or all of the deferred tax assets will not be realized. The Company records a liability for unrecognized tax benefits resulting from uncertain tax positions taken or expected to be taken in a tax return using a “more likely than not” threshold as required by the provisions of ASC 740-10, Accounting for Uncertainty in Income Taxes The Company recognizes interest and penalties related to unrecognized tax benefits, if any, in income tax expense. Stock-Based Compensation The Company has stock-based employee compensation plans which are more fully described in Note 11. Stock-based compensation cost is measured at the grant date based on the fair value of the award and is recognized in the Consolidated Statement of Income and Comprehensive Income using the straight-line method over the vesting period of the award. The Company uses the Black-Scholes option-pricing model to determine the fair value of stock option awards. Comprehensive Income Comprehensive income includes all changes in equity during a period, except those resulting from investments by stockholders and distributions to stockholders. The Company's comprehensive income includes changes in the fair value of the Company’s unrealized gains on available for sale securities and foreign currency translation adjustments. There were no reclassifications out of accumulated other comprehensive income in the periods ended December 31, 2018, 2017, or 2016. Foreign Currency The functional currency for each of the Company’s subsidiaries is the local currency of the country in which it is incorporated. All assets and liabilities are translated into U.S. dollar equivalents at the exchange rate in effect on the balance sheet date or at a historical rate. Revenues and expenses are translated at average exchange rates. Translation gains or losses are recorded in stockholders’ equity as an element of accumulated other comprehensive loss. Net Income Per Share Basic earnings per share is computed based on the weighted average number of common shares and vested restricted stock units outstanding during the period. Because the holders of unvested restricted stock units do not have non-forfeitable rights to dividends or dividend equivalents, the Company does not consider these restricted stock units to be participating securities that should be included in its computation of earnings per share under the two-class method. Diluted earnings per share is computed using the weighted average number of common shares and vested, undelivered restricted stock units outstanding during the period, plus the dilutive effect of potential future issuances of common stock relating to stock option and restricted stock unit programs using the treasury stock method. In calculating diluted earnings per share, the dilutive effect of stock options and restricted stock units is computed using the average market price for the respective period. In addition, the assumed proceeds under the treasury stock method include the average unrecognized compensation expense of stock options and restricted stock units that are in-the-money. This results in the “assumed” buyback of additional shares, thereby reducing the dilutive impact of stock options and restricted stock units. A reconciliation of the numerator and denominator used in the calculation of basic and diluted net income per share is as follows: For the Years Ended December 31, 2018 2017 2016 Numerator: Net income $ 12,955 $ 6,803 $ 2,419 Denominator: Basic: Weighted average shares of common stock and vested, undelivered restricted stock units outstanding 27,738,178 27,550,044 29,953,798 Diluted: Weighted average shares of common stock and vested, undelivered restricted stock units outstanding 27,678,959 27,550,044 29,953,798 Effect of potentially dilutive shares 973,855 721,340 819,734 Total weighted average shares of common stock and vested, undelivered restricted stock units outstanding and potentially dilutive shares 28,652,814 28,271,384 30,773,532 Calculation of Net Income Per Common Share: Basic: Net income applicable to common stockholders $ 12,955 $ 6,803 $ 2,419 Weighted average shares of stock outstanding 27,738,178 27,550,044 29,953,798 Net income per common share $ 0.47 $ 0.25 $ 0.08 Diluted: Net income applicable to common stockholders $ 12,955 $ 6,803 $ 2,419 Weighted average shares of stock outstanding 28,652,814 28,271,384 30,773,532 Net income per common share(1) $ 0.45 $ 0.24 $ 0.08 (1) In calculating diluted earnings per share, 0.5 million, 0.7 million, and 1.3 million shares related to outstanding stock options and unvested, undelivered restricted stock units were excluded for the years ended December 31, 2018, 2017, and 2016, respectively, because they were anti-dilutive. Recent Accounting Pronouncements Accounting Guidance Adopted in 2018 In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606) , Revenue Recognition The standard may be applied retrospectively to each prior period presented, or using the modified retrospective approach, with the cumulative effect recognized as of the date of initial application. The Company adopted the standard effective January 1, 2018, using the modified retrospective approach (see Note 3). Accounting Guidance Not Yet Adopted as of December 31, 2018 In February 2016, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) No. 2016-02, Leases Codification Improvements to Topic 842 (Leases) Leases Targeted Improvements In January 2017, the FASB issued ASU No. 2017-04, Intangibles-Goodwill and Other (Topic 350), Simplifying the Test for Goodwill Impairment ("ASU 2017-04"). ASU 2017-04 eliminates the requirement to calculate the implied fair value of goodwill to measure a goodwill impairment charge (step 2 of the goodwill impairment test) and instead requires only a one-step quantitative impairment test, performed by comparing the fair value of goodwill with its carrying amount. ASU 2017-04 is effective on a prospective basis effective for goodwill impairment tests in fiscal years beginning after December 15, 2019. Early adoption is permitted for goodwill impairment tests performed on testing dates after January 1, 2017.

Revenue

Revenue	12 Months Ended
	Dec. 31, 2018
Revenue Recognition [Abstract]
Revenue	3. Revenue Disaggregation of Revenue The following table depicts the disaggregation of revenue according to categories consistent with how the Company evaluates its financial performance: Year Ended December 31, 2018 2017 2016 Total Online $ 121,333 $ 108,388 $ 101,827 Total Online by Geographic Area: North America: North America IT Deal Alert $ 43,342 $ 36,622 $ 25,743 North America Core Online 39,318 36,586 43,296 Total North America Online 82,660 73,208 69,039 International: International IT Deal Alert 15,707 12,907 5,661 International Core Online 22,966 22,273 27,127 Total International Online 38,673 35,180 32,788 Total Online by Product: IT Deal Alert: North America IT Deal Alert 43,342 36,622 25,743 International IT Deal Alert 15,707 12,907 5,661 Total IT Deal Alert 59,049 49,529 31,404 Core Online: North America Core Online 39,318 36,586 43,296 International Core Online 22,966 22,273 27,127 Total Core Online 62,284 58,859 70,423 Total Events — 168 4,798 Total Revenues $ 121,333 $ 108,556 $ 106,625 Contract liabilities Timing may differ between the satisfaction of performance obligations and the invoicing and collection of amounts related to the Company’s contracts with customers. Liabilities are recorded for amounts that are collected in advance of the satisfaction of performance obligations. Contract liabilities on the accompanying Consolidated Balance Sheets was $5.6 million and $7.6 million (prior to the adjustment for ASC 606) at December 31, 2018 and December 31, 2017, respectively. The Company’s adoption of ASC 606 reduced the Company’s deferred revenue by $3.5 million as of January 1, 2018. Additionally, certain customers may receive credits, which are accounted for as a material right. The Company estimates these amounts based on the expected amount of future services to be provided to customers and allocates a portion of the transaction price to these material rights. The Company recognizes these material rights as the material rights are exercised. The resulting amounts included in contract liabilities on the accompanying Consolidated Balance Sheets were $3.5 million and $2.7 million at December 31, 2018 and December 31, 2017, respectively. Reconciliation of Account Receivable and Contract Liabilities as a result of the adoption of ASC 606: Accounts Receivable Year-to-Date Activity (in thousands) Balance Accounts Receivable December 31,2017 prior to adoption of ASC 606 $ 29,601 Adjustment to accounts receivable as a result of adoption of ASC 606 3,510 Balance at January 1, 2018 $ 26,091 Contract Liabilities Year-to-Date Activity (in thousands) Balance Deferred Revenue December 31,2017 prior to adoption of ASC 606 $ 7,598 Adjustment to deferred revenue as a result of adoption of ASC 606 3,510 Balance at January 1, 2018 4,088 Deferral of revenue 5,573 Recognition of previously unearned revenue 4,088 Balance at December 31,2018 $ 5,573 The Company elected to apply the following practical expedients: Existence of a Significant Financing Component in a Contract As a practical expedient, the Company has not assessed whether a contract has a significant financing component because the Company expects at contract inception that the period between payment by the customer and the transfer of promised goods or services by the Company to the customer will be one year or less. Payment terms and conditions vary by contract type, although terms generally include requirement of payment within 30 to 90 days. In addition, the Company has determined that the payment terms that the Company provides to its customers are structured primarily for reasons other than the provision of finance to the customer. Costs to Fulfill a Contract The Company’s revenues are primarily generated from customer contracts that are for one year or less. Costs primarily consist of incentive compensation paid based on the achievements of sales targets in a given period for related revenue streams and are recognized in the month when the revenue is earned. As a practical expedient, for amortization periods which are determined to be one year or less, the Company expenses any incremental costs of obtaining the contract with a customer when incurred. For those customer contracts greater than one year, the Company capitalizes and amortizes the expenses over the period of benefit. Revenues Invoiced The Company has applied the practical expedient for certain revenue streams to exclude the value of remaining performance obligations for (i) contracts with an original expected term of one year or less or (ii) contracts for which the Company recognizes revenue in proportion to the amount it has the right to invoice for services performed.

Fair Value Measurements

Fair Value Measurements	12 Months Ended
	Dec. 31, 2018
Fair Value Disclosures [Abstract]
Fair Value Measurements	4. Fair Value Measurements The Company measures certain financial assets and liabilities at fair value on a recurring basis, including cash equivalents, short-term and long-term investments and contingent consideration. The fair value of these financial assets and liabilities was determined based on three levels of input as follows: • Level 1. Quoted prices in active markets for identical assets and liabilities; • Level 2. Observable inputs other than quoted prices in active markets; and • Level 3. Unobservable inputs. The fair value hierarchy of the Company’s financial assets and liabilities carried at fair value and measured on a recurring basis is as follows: Fair Value Measurements at Reporting Date Using December 31, 2018 Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Assets: Money market funds(1) $ 15,070 $ 15,070 $ — $ — Short-term investments(2) 500 — 500 — Long-term investments(2) — — — — Total assets $ 15,570 $ 15,070 $ 500 $ — Fair Value Measurements at Reporting Date Using December 31, 2017 Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Assets: Money market funds(1) $ 7,155 $ 7,155 $ — $ — Short-term investments(2) 7,650 — 7,650 — Long-term investments(2) 496 — 496 — Total assets $ 15,301 $ 7,155 $ 8,146 $ — (1) Included in cash and cash equivalents on the accompanying consolidated balance sheets; valued at quoted market prices in active markets. (2) Short-term and long-term investments consist of municipal bonds, corporate bonds, U.S. Treasury securities, and government agency bonds; their fair value is calculated using an interest rate yield curve for similar instruments.

Acquisition

Acquisition	12 Months Ended
	Dec. 31, 2018
Business Combinations [Abstract]
Acquisition	5. Acquisition LeMagIT On December 17, 2012, the Company purchased all of the outstanding shares of its French partner, E-Magine Médias SAS (“LeMagIT”), for approximately $2.2 million in cash plus a potential future earnout valued at $0.7 million at the time of the acquisition. Approximately $1.2 million of the cash payment was made at closing, and the remainder was paid in two equal installments in 2013 and 2014. The earnout was subject to certain revenue growth targets and the payment was adjusted each period based on actual results. In valuing the contingent consideration, it was determined that fair value adjustments were necessary to appropriately reflect the inherent risk and related time value of money associated with these potential payments. Accordingly, a discount rate of 28% was used. The calculation of these fair values required the use of significant inputs that are not observable in the market and thus represented a Level 3 fair value measurement as defined in ASC 820, Fair Value Measurements and Disclosures The earnout payment of $1.3 million, net of a $0.4 million holdback, was paid in January 2016. The portion of the payment that related to the fair value of the earnout as of the acquisition date, amounting to approximately $0.5 million, is reflected in financing activities in the Company’s Consolidated Statement of Cash Flows for the year ended December 31, 2016. The payment is reflected as an operating cash flow. The holdback was subsequently settled with the stockholders in October 2016. Oceanos Marketing, Inc. The Company made a small, non-material acquisition on August 1, 2018 acquiring substantially all of the operating assets of Oceanos Marketing, Inc. which is a Massachusetts-based contact data management company for $0.6 million.

Cash, Cash Equivalents and Inve

Cash, Cash Equivalents and Investments	12 Months Ended
	Dec. 31, 2018
Cash And Cash Equivalents [Abstract]
Cash, Cash Equivalents and Investments	6. Cash, Cash Equivalents and Investments Cash and cash equivalents consist of highly liquid investments with maturities of three months or less at date of purchase. Cash equivalents are carried at cost, which approximates their fair market value. Cash and cash equivalents consisted of the following: As of December 31, 2018 2017 Cash $ 19,603 $ 18,811 Money market funds 15,070 7,155 Total cash and cash equivalents $ 34,673 $ 25,966 The Company’s short-term and long-term investments are accounted for as available for sale securities. These investments are recorded at fair value with the related unrealized gains and losses included in accumulated other comprehensive loss, a component of stockholders’ equity, net of tax. The cumulative unrealized loss, net of taxes, was $15, $17 and $30 as of December 31, 2018, 2017, and 2016, respectively. Realized gains and losses on the sale of these investments are determined using the specific identification method. There were no realized gains or losses in 2018, 2017, or 2016. Short-term and long-term investments consisted of the following: December 31, 2018 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Estimated Fair Value Short-term and long-term investments: U.S. Treasury securities $ 500 $ — $ — $ 500 Government agency bonds — — — $ — Municipal bonds — — — $ — Corporate bonds $ — — — $ — Total short-term and long-term investments $ 500 $ — $ — $ 500 December 31, 2017 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Estimated Fair Value Short-term and long-term investments: U.S. Treasury securities $ 1,499 $ — $ (6 ) $ 1,493 Government agency bonds 1,003 — (4 ) $ 999 Municipal bonds 4,169 — (14 ) $ 4,155 Corporate bonds 1,502 — (3 ) $ 1,499 Total short-term and long-term investments $ 8,173 $ — $ (27 ) $ 8,146 The Company had no debt securities in an unrealized loss position at December 31, 2018. At December 31, 2017, the Company had 15 debt securities in an unrealized loss position, and the unrealized loss on those securities was approximately $27 and the fair value was $8.1 million at that date. The Company uses specific identification when reviewing these investments for impairment. Because the Company does not intend to sell the investments that are in an unrealized loss position and it is not likely that the Company will be required to sell any investments before recovery of their cost basis, the Company does not consider those investments with an unrealized loss to be other-than-temporarily impaired at December 31, 2018. At December 31, 2018 the US treasury security had a maturity date of January 2019. All income generated from these investments is recorded as interest income.

Goodwill

Goodwill	12 Months Ended
	Dec. 31, 2018
Goodwill And Intangible Assets Disclosure [Abstract]
Goodwill	7. Goodwill The changes in the carrying amount of goodwill for the years ended December 31, 2018 and 2017 are as follows: As of December 31, 2018 2017 Balance as of beginning of year $ 93,793 $ 93,469 Effect of exchange rate changes (202 ) 324 Additions 96 — Balance as of end of year $ 93,687 $ 93,793

Intangible Assets

Intangible Assets	12 Months Ended
	Dec. 31, 2018
Goodwill And Intangible Assets Disclosure [Abstract]
Intangible Assets	8. Intangible Assets The following table summarizes the Company’s intangible assets, net: As of December 31, 2018 Estimated Useful Lives (Years) Gross Carrying Amount Accumulated Amortization Net Customer, affiliate and advertiser relationships 5-17 $ 6,500 $ (6,256 ) 244 Developed websites, technology and patents 10 1,502 (958 ) 544 Trademark, trade name and domain name 5-8 1,784 (1,730 ) 54 Proprietary user information database and internet traffic 5 1,110 (1,110 ) — Non-Compete agreement 1.5 10 (3 ) 7 Total intangible assets $ 10,906 $ (10,057 ) $ 849 As of December 31, 2017 Estimated Useful Lives (Years) Gross Carrying Amount Accumulated Amortization Net Customer, affiliate and advertiser relationships 5 $ 6,938 $ (6,938 ) $ — Developed websites, technology and patents 10 1,342 (907 ) 435 Trademark, trade name and domain name 8 1,802 (1,731 ) 71 Proprietary user information database and internet traffic 5 1,202 (1,202 ) — Total intangible assets $ 11,284 $ (10,778 ) $ 506 Intangible assets are amortized over their estimated useful lives, which range from eighteen months to seventeen years, using methods of amortization that are expected to reflect the estimated pattern of economic use. The remaining amortization expense will be recognized over a weighted average period of approximately 5.17 years. Amortization expense was $0.1 million, $0.2 million, and $0.8 million for the years ended December 31, 2018, 2017, and 2016, respectively. Amortization expense is recorded within operating expenses as the intangible assets consist of customer-related assets and website traffic that the Company considers to be in support of selling and marketing activities. The Company wrote off $0.7 million fully amortized intangible assets in 2018. The Company did not write off any intangible assets in 2017. The Company wrote off $0.1 million of fully amortized intangible assets in 2016. The Company expects amortization expense of intangible assets to be as follows: Years Ending December 31: Amortization Expense 2019 $ 133 2020 113 2021 129 2022 159 2023 315 $ 849

Loan Agreement and Prior Term L

Loan Agreement and Prior Term Loan Agreement	12 Months Ended
	Dec. 31, 2018
Debt Disclosure [Abstract]
Loan Agreement and Prior Term Loan Agreement	9. Loan Agreement and Prior Term Loan Agreement On May 9, 2016, the Company entered into a Senior Secured Credit Facilities Credit Agreement for a term loan (the “Term Loan Agreement”). Under the Term Loan Agreement, the Company borrowed and received $50.0 million in aggregate principal amount pursuant to a five-year term loan (the “Term Loan”). The borrowings under the Term Loan Agreement are secured by a lien on substantially all of the assets of the Company, including a pledge of the stock of certain of its wholly-owned subsidiaries. On June 22, 2017, the Company entered into a First Amendment to the Term Loan Agreement (the “First Amendment”). The First Amendment amended the existing Term Loan Agreement by, among other things, modifying the consolidated leverage ratio covenant and the liquidity requirement related to capital stock repurchases. Upon effectiveness of the First Amendment, the Company’s total consolidated leverage ratio (calculated in accordance with the Term Loan Agreement) could not be greater than 2.50 to 1.00 until the quarter ending March 31, 2018, with stepdowns thereafter to a maximum ratio of 1.50 to 1.00 for quarters ending on or after March 31, 2020. In addition, the minimum liquidity requirement (calculated in accordance with the Term Loan Agreement) with respect to any capital stock repurchased using borrowings under the Term Loan Agreement was increased from $10.0 million to $15.0 million. Interest expense under the Term Loan Agreement was $1.4 million in 2018 and 2017, respectively, which includes non-cash interest expense of $0.3 million and $0.1 million in 2018 and 2017, respectively, related to the amortization of deferred issuance costs. At the Company’s option, the Term Loan Agreement bore interest at either an annual rate of 1.50% plus the higher of (a) the Prime Rate in effect on such day and (b) the Federal Funds Effective Rate in effect on such day plus 0.50%, or the London Interbank Offered Rate (“LIBOR”) plus 2.50%. During 2018, the Company made principal payments totaling $32.5 million. During 2017, the Company made principal payments totaling $6.3 million. On December 24, 2018 the company paid off the remaining balance of the Term Loan. On December 24, 2018, the Company entered into a Loan and Security Agreement (the “Loan Agreement”) with Western Alliance Bank (“Western Alliance”) as the lender. The Loan Agreement provides for a $25 million term loan facility with a maturity date of December 10, 2023 (the “Loan Agreement”). The borrowings under the Loan Agreement are secured by a lien on substantially all of the assets of the Company, including a pledge of the stock of certain of its wholly-owned subsidiaries (limited, in the case of the stock of certain foreign subsidiaries of the Company, to no more than 65% of the capital stock of such subsidiaries). The Loan agreement must be repaid quarterly, with applicable interest paid monthly, in the following manner: 1.25% of the initial aggregate borrowings are due and payable each quarter for the first two loan years, 1.88% of the initial aggregate borrowings are due and payable each quarter for the third loan year, and 2.50% of the initial aggregate borrowings are due and payable each quarter for the fourth and fifth loan years. At maturity, all outstanding amounts, including unpaid principal and accrued and unpaid interest, under the Loan Agreement will be due and payable. The borrowings are subject to a leverage ratio, measured quarterly. The Loan Agreement also requires the Company to make representations and warranties and to comply with certain other covenants and agreements that are customary in loan agreements of this type. The Loan Agreement will bear interest, on the outstanding daily balance thereof, at a floating per annum rate equal to one and three-eighths percent (1.375%) above the greater of (a) the one (1) month U.S. LIBOR rate reported in The Wall Street Journal as of such date or (b) two percent (2.00%). The Loan Agreement required the Company to pay a one-time non-refundable facility fee of $25,000 on the closing date. The Loan Agreement may be prepaid by the Company at its option without penalty, provided the Company complies with the notice provision of the document. The Loan Agreement also contains customary events of default, subject to grace periods in certain cases, which may cause repayment of the Term Loan to be accelerated. Expected future installment payments on the principal by year and amounts included in the Company’s Consolidated Balance Sheet as of December 31, 2018 related to the Loan Agreement are as follows: Years Ending December 31: 2019 $ 1,250 2020 1,250 2021 1,875 2022 2,500 2023 18,125 Total principal on loan agreement 25,000 Unamortized debt issuance costs (45 ) Carrying amount of loan agreement 24,955 Less: current portion of loan agreement, net of $9 in unamortized debt issuance costs (1,241 ) Long-term portion of loan agreement, net of $36 in unamortized debt issuance costs $ 23,714 At December 31, 2018, the Company was in compliance with all covenants under the Loan Agreement.

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2018
Commitments And Contingencies Disclosure [Abstract]
Commitments and Contingencies	10. Commitments and Contingencies Operating Leases The Company conducts its operations in leased office facilities under various noncancelable operating lease agreements that expire through December 2029. On October 26, 2017, the Company and Hines Global REIT Riverside Center, LLC (“Hines”) entered into a Third Amendment (the “Third Amendment”) to the lease agreement for office space in Newton, Massachusetts, dated as of August 4, 2009, by and between the Company and MA-Riverside Project, L.L.C. (predecessor-in-interest to Hines) as amended (the “Newton Lease”). The Third Amendment extends the lease term to December 31, 2029 and preserves the Company’s option to extend the term for an additional five-year period subject to certain terms and conditions set forth in the Newton Lease. The Third Amendment reduces the rentable space from approximately 110,000 square feet to approximately 74,000 square feet effective January 1, 2018 and provides the Company with a one-time cash allowance of up to $3.3 million, which may be used by the Company for any purpose. Beginning on January 1, 2018, base monthly rent under the Third Amendment will be $0.3 million. The base rent will increase biennially at a rate averaging approximately 1% per year, beginning on January 1, 2020. The Company remains responsible for certain other costs under the Third Amendment, including operating expense and taxes. The Newton Lease contains rent concessions, which the Company is receiving over the life of the Newton Lease. Certain of the Company’s operating leases include lease incentives and escalating payment amounts and are renewable for varying periods. The Company is recognizing the related rent expense on a straight-line basis over the term of each lease, taking into account the lease incentives and escalating lease payments. Total rent expense under the Company’s leases was approximately $4.0 million, $4.5 million, and $4.4 million for the years ended December 31, 2018, 2017, and 2016, respectively. Future minimum lease payments under the Company’s noncancelable operating leases at December 31, 2018 are as follows: Years Ending December 31: Minimum Lease Payments 2019 $ 4,180 2020 3,629 2021 3,721 2022 3,397 2023 3,397 Thereafter 21,267 $ 39,591 Litigation From time to time and in the ordinary course of business, the Company may be subject to various claims, charges, and litigation. At December 31, 2018 and 2017, the Company did not have any pending claims, charges, or litigation that it expects would have a material adverse effect on its consolidated financial position, results of operations, or cash flows.

Stock-Based Compensation

Stock-Based Compensation	12 Months Ended
	Dec. 31, 2018
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Stock-Based Compensation	11. Stock-Based Compensation Stock Option and Incentive Plans In April 2007, the Board approved the 2007 Stock Option and Incentive Plan (the “2007 Plan”), which was approved by the stockholders of the Company and became effective upon the consummation of the Company’s IPO in May 2007. The 2007 Plan allows the Company to grant ISOs, NSOs, stock appreciation rights, deferred stock awards, restricted stock units and other awards. Under the 2007 Plan, stock options could not be granted at less than fair market value on the date of grant, and grants generally vest over a three to four-year period. Stock options granted under the 2007 Plan expire no later than ten years after the grant date. Additionally, beginning with awards made in August 2015, the Company had the option to direct a net issuance of shares for satisfaction of tax liability with respect to vesting of awards and delivery of shares. Prior to August 2015, this choice of settlement method was solely at the discretion of the award recipient. At the inception of the plan, the Company reserved for issuance an aggregate of 2,911,667 shares of common stock under the 2007 Plan, which expired in May 2017. The 2007 Plan was subject to an automatic annual increase of shares on January 1 of each year, beginning on January 1, 2008, equal to the lesser of (a) 2% of the outstanding number of shares of common stock (on a fully-diluted basis) on the immediately preceding December 31 and (b) such lower number of shares as may be determined by the compensation committee of the Board. The number of shares available for issuance under the 2007 Plan was subject to adjustment in the event of a stock split, stock dividend or other change in capitalization. No new awards may be granted under the 2007 Plan; however, the shares of common stock remaining in the 2007 Plan are available for issuance in connection with previously awarded grants under the 2007 Plan. There are 513,500 shares of common stock, including 130,000 vested restricted stock unit awards that remain subject to outstanding stock grants under the 2007 Plan as of December 31, 2018. In March 2017, the Board approved the 2017 Stock Option and Incentive Plan (the “2017 Plan”), which was approved by the stockholders of the Company at the 2017 Annual Meeting and became effective June 16, 2017. The 2017 Plan replaces the Company’s 2007 Plan. On that date 3,000,000 shares of Common Stock were reserved for issuance under the 2017 Plan and, generally, shares that are forfeited or canceled from awards under the 2017 Plan also will be available for future awards. Under the 2017 Plan, the Company may grant restricted stock and restricted stock units, non-qualified stock options, stock appreciation rights, performance awards, and other stock-based and cash-based awards. Grants generally vest in equal tranches over a three-year period. Stock options granted under the 2017 Plan expire no later than ten years after the grant date. Shares of stock issued pursuant to restricted stock awards are restricted in that they are not transferable until they vest. Stock underlying awards of restricted stock units are not issued until the units vest. Non-qualified stock options cannot be exercised until they vest. Under the 2017 Plan, all stock options and stock appreciation rights must be granted with an exercise price that is at least equal to the fair market value of the stock on the date of grant. The 2017 Plan broadly prohibits the repricing of options and stock appreciation rights without stockholder approval and requires that no dividends or dividend equivalents be paid with respect to options or stock appreciation rights. The 2017 Plan further provides that, in the event any dividends or dividend equivalents are declared with respect to restricted stock, restricted stock units, other stock-based awards and performance awards (referred to as “full-value awards”), they would be subject to the same vesting and forfeiture provisions as the underlying award. There is a total of 999,761 shares of common stock that are subject to outstanding stock grants under the 2017 Plan as of December 31, 2018. Accounting for Stock-Based Compensation The Company uses the Black-Scholes option pricing model to calculate the grant-date fair value of an award. The Company calculated the fair values of the options granted using the following estimated weighted-average assumptions: Years Ended December 31, 2018 2017 2016 Expected volatility 39 % 43 % 46 % Expected term 6 years 6 years 6 years Risk-free interest rate 2.82 % 1.87 % 1.90 % Expected dividend yield — % — % — % Weighted-average grant date fair value per share $ 11.94 $ 4.61 $ 3.91 The expected volatility of options granted has been determined using a weighted average of the historical volatility of the Company’s stock for a period equal to the expected life of the option. The expected life of options has been determined utilizing the “simplified” method. The risk-free interest rate is based on a zero coupon U.S. treasury instrument whose term is consistent with the expected life of the stock options. The Company has not paid and does not anticipate paying cash dividends on its shares of common stock; therefore, the expected dividend yield is assumed to be zero. The Company applied an estimated annual forfeiture rate based on historical averages in determining the expense recorded in each period. A summary of the stock option activity under the Company’s stock option plans for the year ended December 31, 2018 is presented below: Options Outstanding Weighted-Average Exercise Price Per Share Weighted-Average Remaining Contractual Term in Years Aggregate Intrinsic Value Options outstanding at December 31, 2017 344,090 $ 6.41 Granted 20,000 28.42 Exercised (178,090 ) 5.64 $ 2,704 Forfeited — — Canceled — — Options outstanding at December 31, 2018 186,000 $ 9.50 4.32 $ 828 Options exercisable at December 31, 2018 166,000 $ 7.22 3.70 $ 828 Options vested or expected to vest at December 31, 2018 184,108 $ 9.31 4.26 $ 828 During the years ended December 31, 2018, 2017, and 2016, the total intrinsic value of options exercised (i.e. the difference between the market price of the underlying stock at exercise and the price paid by the employee to exercise the options) was $2.7 million, $0.9 million, and $1.9 million, respectively, and the total amount of cash received by the Company from exercise of these options was $1.0 million, $0.9 million, and $4.2 million, respectively. Restricted Stock Unit Awards Restricted stock unit awards are valued at the market price of a share of the Company’s common stock on the date of the grant. A summary of the restricted stock unit award activity under the Company’s plans for the year ended December 31, 2018 is presented below: Shares Weighted-Average Grant Date Fair Value Per Share Aggregate Intrinsic Value Nonvested outstanding at December 31, 2017 1,414,000 $ 9.37 Granted 542,202 27.59 Vested (752,941 ) 9.26 Forfeited (6,000 ) 9.57 Nonvested outstanding at December 31, 2018 1,197,261 $ 17.69 $ 14,619 The total grant-date fair value of restricted stock unit awards that vested during the years ended December 31, 2018, 2017, and 2016 was $7.0 million, $7.1 million, and $7.4 million, respectively. As of December 31, 2018, there was $17.9 million of total unrecognized compensation expense related to stock options and restricted stock units, which is expected to be recognized over a weighted average period of 1.8 years.

Stockholders' Equity

Stockholders' Equity	12 Months Ended
	Dec. 31, 2018
Equity [Abstract]
Stockholders' Equity	12. Stockholders’ Equity Tender Offer On May 10, 2016, the Company commenced a Tender Offer to purchase up to 8.0 million shares of its common stock, representing approximately 24.8% of the shares of TechTarget’s common stock issued and outstanding at that time, at a price of $7.75 per share. The Tender Offer expired on June 8, 2016. In accordance with the terms of the Tender Offer, the Company accepted for purchase 5,237,843 shares of its common stock for a purchase price of $7.75 per share, or a total of $40.6 million. Repurchased shares were recorded under the cost method and are reflected as treasury stock in the accompanying Consolidated Balance Sheets. The total cost of the Tender Offer was $40.8 million, which included approximately $0.2 million in costs directly attributable to the purchase of shares pursuant to the Tender Offer. In connection with the tender offer, TCV V, L.P., TCV Member Fund, L.P. (along with TCV V, L.P., referred to as the “TCV Funds”) and TCV Management 2004, L.L.C. (“TCM 2004”), each a related party, collectively tendered 3,379,249 shares of the Company’s common stock in the aggregate. Jay Hoag, a member of the Company’s Board of Directors at the time of the Tender Offer, was also a member of the general partner of the TCV Funds and a member of TCM 2004, which at the time was estimated to hold more than 5% of the voting securities of the Company. Additionally, Rogram LLC, a related party, tendered 308,713 shares in connection with the Tender Offer. Roger Marino, a member of the Company’s Board of Directors, indirectly controls shares in Rogram LLC. Common Stock Repurchase Programs On November 7, 2018 the Company announced the November 2018 Stock Repurchase plan to repurchase shares up to an aggregate amount of $25.0 million whereby the Company was authorized to repurchase the Company’s common stock from time to time on the open market or in privately negotiated transactions at prices and in a manner that may be determined by management. The Company repurchased 243,425 shares at an aggregate purchase price of $3.1 million at an average share price of $12.82 during the fourth quarter under the November 2018 Stock Repurchase plan. In June 2016, the Company announced that the Board had authorized a $20.0 million stock repurchase program (the “June 2016 Repurchase Program”) whereby the Company was authorized to repurchase the Company’s common stock from time to time on the open market or in privately negotiated transactions at prices and in the manner that may be determined by the Board. Pursuant to the June 2016 Repurchase Program, the Company repurchased 211,729, 749,437 and 980,329 shares of common stock for an aggregate purchase price of $3.9 million, $8.1 million and $8.0 million in 2018, 2017 and 2016 respectively. On May 5, 2017, the Board reauthorized the June 2016 Repurchase Program to allow the Company to use the remaining balance of the unused authorization under such program after its original expiration date in June 2017. For all or a portion of the authorized repurchase amount, the Company may enter into one or more plans that are compliant with Rule 10b5-1 of the Securities Exchange Act of 1934 that are designed to facilitate these purchases. In August 2018, the June 2016 Common Stock Repurchase plan expired. Repurchased shares are recorded under the cost method and are reflected as treasury stock in the accompanying Consolidated Balance Sheets. Reserved Common Stock As of December 31, 2018, the Company has reserved 3,334,912 shares of common stock for use in settling outstanding options and unvested restricted stock units that have not been issued, as well as future awards available for grant under the 2007 and 2017 Plans.

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Income Taxes	13. Income Taxes Income before provision for income taxes was as follows: Years Ended December 31, 2018 2017 2016 U.S. $ 11,917 $ 9,435 $ 3,351 Foreign 2,926 282 1,666 Income before income taxes $ 14,843 $ 9,717 $ 5,017 The income tax provision for the years ended December 31, 2018, 2017, and 2016 consisted of the following: Years Ended December 31, 2018 2017 2016 Current: Federal $ 1,540 $ 1,543 $ 1,627 State 540 419 (569 ) Foreign (55 ) 57 415 Total current 2,025 2,019 1,473 Deferred: Federal (65 ) 598 1,592 State (53 ) 382 (21 ) Foreign (19 ) (85 ) (446 ) Total deferred (137 ) 895 1,125 $ 1,888 $ 2,914 $ 2,598 On December 22, 2017, the legislation commonly referred to as the Tax Cuts and Jobs Act of 2017 (“the Act”) was signed into law making significant changes to the Internal Revenue Code of 1986, as amended. Changes include, but are not limited to, a corporate tax rate decrease from 35% to 21% effective for tax years beginning after December 31, 2017.The Act also provided for a mandatory one-time tax on the deemed repatriation of accumulative foreign earnings of foreign subsidiaries as of December 31 (the ‘Transition Tax’), a tax on global intangible low-taxed income (‘GILTI’) for tax year beginning after December 31,2017, and modified the rules on the deduction for executive compensation, We have calculated our best estimate of the impact of the Act in our year end income tax provision in accordance with our understanding of the Act and guidance available as of the date of this filing. On December 22, 2017, Staff Accounting Bulletin No. 118 (“SAB 118”) was issued to address the application of US GAAP in situations when a registrant does not have the necessary information available, prepared or analyzed (including computations) in reasonable detail to complete the accounting for certain income tax effects of the Act. In accordance with SAB 118, the Company recorded an estimated $45 of current tax expense at December 31, 2017 in connection with the Transition Tax. In the first quarter of 2018 the Company performed additional analysis of historical foreign earnings and as a result recorded an immaterial adjustment to the transition tax. The Company completed its analysis in the fourth quarter of 2018 with no further adjustment, and reported a total transition tax of $31 on their Federal tax return. In addition, we have elected to account for GILTI as a period cost. The income tax provision for the years ended December, 31, 2018, 2017 and 2016 differs from the amounts computed by applying the statutory federal income tax rate to consolidated income before provision for income taxes as follows: Years Ended December 31, 2018 2017 2016 Provision computed at statutory rate $ 3,116 $ 3,401 $ 1,757 Increase resulting from: Difference in rates for foreign jurisdictions 93 37 (146 ) Tax exempt interest income (2 ) (12 ) (21 ) Stock-based compensation (1,708 ) (304 ) 315 Other non-deductible expenses 252 (101 ) 67 Non-deductible officers compensation 198 447 738 State income tax provision 396 653 (380 ) Losses not benefitted 23 4 1 Subsidiary earnings taxed in the US (104 ) 127 253 True-up of prior year returns (20 ) (161 ) 11 Research and development credit (279 ) (801 ) — Tax Cuts and Jobs Act of 2017 (11 ) (376 ) — Cancellation of Foreign Subsidiary Debt (127 ) — — Other 61 — 3 Provision for income taxes $ 1,888 $ 2,914 $ 2,598 Significant components of the Company’s net deferred tax assets and liabilities are as follows: As of December 31, 2018 2017 Deferred tax assets: Net operating loss carryforwards $ 33 $ 166 Contract liabilities — 187 Accruals and allowances 1,253 972 Stock-based compensation 1,286 815 Deferred rent expense 1,267 1,327 Other 4 4 Gross deferred tax assets 3,843 3,471 Less valuation allowance (33 ) (352 ) Total deferred tax assets 3,810 3,119 Deferred tax liabilities: Intangible asset amortization (2,603 ) (2,036 ) Depreciation (1,814 ) (1,823 ) Total deferred tax liabilities (4,417 ) (3,859 ) Net deferred tax liabilities $ (607 ) $ (740 ) As reported: Non-current deferred tax assets $ 55 $ 98 Non-current deferred tax liabilities $ (662 ) $ (838 ) In evaluating the ability to realize the net deferred tax liability, the Company considers all available evidence, both positive and negative, including past operating results, the existence of cumulative losses in the most recent fiscal years, tax planning strategies that are prudent and feasible, and forecasts of future taxable income. In considering sources of future taxable income, the Company makes certain assumptions and judgments which are based on the plans and estimates used to manage the underlying business of the Company. Changes in the Company’s assumptions and estimates, as well as changes in tax rates, may materially impact income tax expense for the period. The deferred tax assets relating to the foreign net operating losses (“NOLs”) are fully offset by a valuation allowance. The valuation allowance of $33 and $0.4 million at December 31, 2018 and 2017 respectively, relates primarily to foreign NOLs that the Company determined were not more likely than not to be realized based on projections of future taxable income in China and Hong Kong. The valuation allowance decreased by$320, $91, and $85 during the years ended December 31, 2018, 2017, and 2016, respectively. To the extent realization of the deferred tax assets for NOLs becomes more likely than not, recognition of these acquired tax benefits would reduce income tax expense. As of December 31, 2018, the Company had a NOL carryforward of approximately $0.2 million, which may be used to offset future taxable income in foreign jurisdictions indefinitely. The Company had no unrecognized tax benefits at December 31, 2018. It is not expected that the amount of unrecognized tax benefits will change significantly within the next twelve months. A reconciliation of the beginning and ending amounts of unrecognized tax benefits for the years ended December 31, 2018, 2017, and 2016 is as follows: 2018 2017 2016 Balance at beginning of year $ — $ — $ 184 Reductions due to amnesty and settlement — — (188 ) Payments — — — Gross increases related to positions taken in prior periods — — 4 Balance at end of year $ — $ — $ — The Company files income tax returns in the U.S. and in foreign jurisdictions. Generally, the Company is no longer subject to U.S., state, local and foreign income tax examinations by tax authorities in its major jurisdictions for years before 2014, except to the extent of NOL and tax credit carryforwards from those years. Major taxing jurisdictions include the U.S., both federal and state. As of December 31, 2018, the Company also had foreign NOL carryforwards of $0.2 million, which may be used to offset future taxable income in foreign jurisdictions indefinitely. The deferred tax assets related to the foreign NOL carryforwards have been fully offset by a valuation allowance. The Company considers the excess of its financial reporting over its tax basis in investments in foreign subsidiaries essentially permanent in duration and as such has not recognized deferred tax liability related to this difference. Undistributed earnings of the Company’s foreign subsidiaries amounted to approximately $7.0 million as of December 31, 2018. The Company has not provided any additional federal or state income taxes or foreign withholding taxes on the undistributed earnings as such earnings have been indefinitely reinvested in the business. Due to the various methods by which such earnings could be repatriated in the future, the amount of taxes attributable to the undistributed earnings is not practicably determinable.

Segment Information

Segment Information	12 Months Ended
	Dec. 31, 2018
Segment Reporting [Abstract]
Segment Information	14. Segment Information The Company views its operations and manages its business as one operating segment based on factors such as how the Company manages its operations and how its executive management team reviews results and makes decisions on how to allocate resources and assess performance. Geographic Data Net sales to unaffiliated customers by geographic area were as follows: Years Ended December 31, 2018 2017 2016 United States $ 89,340 $ 77,982 $ 79,535 United Kingdom 14,391 12,544 9,944 Other International 17,602 18,030 17,146 Total $ 121,333 $ 108,556 $ 106,625 Long-lived assets by geographic area were as follows: Years Ended December 31, 2018 2017 U.S. $ 101,051 $ 98,683 International 4,386 5,402 Total $ 105,437 $ 104,085 Net sales to unaffiliated customers by geographic area are based on the customers’ current billing addresses, and does not consider the geo-targeted (target audience) location of the campaign. Long-lived assets are comprised of property and equipment, net; goodwill; and intangible assets, net. No single country outside of the U.S. accounted for 10% or more of the Company’s long-lived assets during either of these periods.

401(k) Plan

401(k) Plan	12 Months Ended
	Dec. 31, 2018
Postemployment Benefits [Abstract]
401(k) Plan	15. 401(k) Plan The Company maintains a 401(k) retirement savings plan (the “Plan”) whereby employees may elect to defer a portion of their salary and contribute the deferred portion to the Plan. The Company contributes an amount equal to 50% of the employee’s contribution to the Plan, up to an annual limit of $3 in 2018 and $2 for 2017 and 2016. The Company contributed $1.1 million, $0.9 million and $0.9 million to the Plan for each of the years ended December 31, 2018, 2017, and 2016 respectively. Employee contributions and the Company’s matching contributions are invested in one or more collective investment funds at the participant’s direction. The Company’s matching contributions vest 25% annually and are 100% vested after four consecutive years of service.

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2018
Accounting Policies [Abstract]
Principles of Consolidation	Principles of Consolidation The accompanying Consolidated Financial Statements include the accounts of the Company and its wholly-owned subsidiaries, TechTarget Securities Corporation (“TSC”), TechTarget Limited, TechTarget (HK) Limited (“TTGT HK”), TechTarget (Australia) Pty Ltd., TechTarget (Singapore) Pte Ltd., E-Magine Médias SAS (“LeMagIT”) and TechTarget Germany GmbH. TSC is a Massachusetts corporation. TechTarget Limited is a subsidiary doing business principally in the United Kingdom. TTGT HK is a subsidiary incorporated in Hong Kong in order to facilitate the Company’s activities in the Asia-Pacific region. In 2018, TechTarget modified its PRC operations consolidating its activities with other TechTarget locations. TechTarget (Beijing) Information Technology Consulting Co. Ltd. (“TTGT Consulting”) and Keji Wangtuo Information Technology Co., Ltd., (“KWIT”), which were incorporated under the laws of the People’s Republic of China (“PRC”), were closed during 2018. TechTarget (Australia) Pty Ltd. and TechTarget (Singapore) Pte Ltd. are the entities through which the Company does business in Australia and Singapore, respectively; LeMagIT and TechTarget Germany GmbH, both wholly-owned subsidiaries of TechTarget Limited, are entities through which the Company does business in France and Germany, respectively.
Reclassifications	Reclassifications There were no reclassifications out of accumulated other comprehensive income in the years ended December 31, 2018, 2017, or 2016.
Use of Estimates	Use of Estimates The preparation of consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosures of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. On an ongoing basis, the Company evaluates its estimates, including those related to revenues, long-lived assets, goodwill, the allowance for doubtful accounts, stock-based compensation, earnouts, self-insurance accruals, the allocation of purchase price to intangibles and goodwill, and income taxes. Estimates of the carrying value of certain assets and liabilities are based on historical experience and on various other assumptions that the Company believes to be reasonable. Actual results could differ from those estimates.
Revenue Recognition	Revenue Recognition On January 1, 2018, we adopted Topic 606 using the modified retrospective method applied to those contracts which were not completed as of January 1, 2018. Results for reporting periods beginning after January 1, 2018 are presented under Topic 606, while prior period amounts are not adjusted and continue to be reported in accordance with our historic accounting under Topic 605. Revenue Recognition under Accounting Standards Codification (“ASC”) 605, Revenue Recognition The Company generates its revenues from the sale of targeted marketing and advertising campaigns, which are delivered via its network of websites, data analytics solutions, and, historically, events. In all cases, revenue is recognized only when the price is fixed or determinable, persuasive evidence of an arrangement exists, the service is performed and collectability of the resulting receivable is reasonably assured. We recognized revenue from events in the period in which the event occurs. The majority of our events were free to qualified attendees; however, certain events were based on a paid attendee model. We recognized revenue for paid attendee events upon completion of the event. As previously disclosed, we have phased out our events product line. Revenue Recognition under ASC 606, Revenue from Contacts with Customers (“ASC 606”) The Company generates its revenues from the sale of targeted marketing and advertising campaigns, which it delivers via its network of websites and data analytic solutions. Revenue is recognized when performance obligations are satisfied by transferring promised goods or services to customers, as determined by applying a five-step process consisting of: a) identifying the contract, or contracts, with a customer, b) identifying the performance obligations in the contract, c) determining the transaction price, d) allocating the transaction price to the performance obligations in the contract, and e) recognizing revenue when, or as, performance obligations are satisfied. The Company’s offerings consist of: IT Deal Alert provides a suite of products that leverages detailed purchase intent data that we collect about end-user IT organizations. Through proprietary scoring methodologies, we use this insight to help our customers identify and prioritize accounts. We provide this insight primarily through Priority Engine TM TM TM TM Core Online consists primarily of demand solutions, brand solutions, and custom content. Demand solutions offerings provide the Company’s customers the opportunity to maximize return on investment by capturing sales leads from the distribution and promotion of content to its audience. Demand solutions may contain the following components: White Papers, Webcasts, Podcasts, Videocasts and Virtual Trade Shows, and Content Sponsorship, which the Company may utilize at its discretion. Brand Solutions provide the Company’s customers to target audiences of IT and business professionals actively researching information related to their products and services. This can be accomplished through on-network or off-network branding as well as through the hosting of Microsites. The Company will at times create white papers, case studies, webcasts, or videos to our customers’ specifications through its Custom Content team (“custom content”). Revenue from brand and demand solutions is primarily recognized when the transfer of control occurs. Certain of the contracts within brand and demand solutions are duration-based campaigns which, in the event of customer cancellation, provide the Company with an enforceable right to a proportional payment for the portion of the campaign based on services provided. Accordingly, revenue from duration-based campaigns are recognized using a time-based measure of progress, which the Company believes best depicts how it satisfies its performance obligations in these arrangements as control is continuously transferred throughout the contract period. Revenue from Microsites is recognized ratably over the life of the contract. To determine standalone selling price for the individual performance obligations in the arrangement, the Company uses an estimate of the observable selling prices in separate transactions. The Company establishes best estimates considering multiple factors including, but not limited to, class of client, size of transaction, available inventory, pricing strategies and market conditions. The Company uses a range of amounts to estimate stand-alone selling price when it sells the goods and services separately and needs to determine whether a discount is to be allocated based upon the relative stand-alone selling price to the various goods and services. J udgment is required to determine the standalone selling price for each distinct performance obligation.
Fair Value of Financial Instruments	Fair Value of Financial Instruments Financial instruments consist of cash and cash equivalents, short-term and long-term investments, accounts receivable, accounts payable, long-term debt and contingent consideration. Due to their short-term nature and liquidity, the carrying value of these instruments, with the exception of contingent consideration and long-term debt, approximates their estimated fair values. See Note 4 for further information on the fair value of the Company’s investments. The Company classifies all of its short-term and long-term investments as available-for-sale. Amounts outstanding under the Company’s long-term debt are subject to variable rates of interest based on current market rates, and as such, the Company believes the carrying amount of these obligations approximates fair value. The fair value of contingent consideration was estimated using a discounted cash flow method described in Note 5.
Long-Lived Assets, Goodwill and Indefinite-lived Intangible Assets	Long-Lived Assets , Long-lived assets consist primarily of property and equipment, capitalized software, goodwill and other intangible assets. The Company reviews long-lived assets, including property and equipment and finite intangible assets, for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. Conditions that would trigger an impairment assessment include, but are not limited to, a significant adverse change in legal factors or business climate that could affect the value of an asset or an adverse action or a significant decrease in the market price. A specifically identified intangible asset must be recorded as a separate asset from goodwill if either of the following two criteria is met: (1) the intangible asset acquired arises from contractual or other legal rights; or (2) the intangible asset is separable. Accordingly, intangible assets consist of specifically identified intangible assets. Goodwill is the excess of any purchase price over the estimated fair value of net tangible and intangible assets acquired. Goodwill and indefinite-lived intangible assets are not amortized but are reviewed annually for impairment or more frequently if impairment indicators arise. Separable intangible assets that are not deemed to have an indefinite life are amortized over their estimated useful lives, which range from eighteen months to seventeen years, using methods of amortization that are expected to reflect the estimated pattern of economic use, and are reviewed for impairment when events or changes in circumstances suggest that the assets may not be recoverable. Consistent with the Company’s determination that it has a single reporting segment, it has been determined that there is a single reporting unit and goodwill is therefore tested for impairment at the entity level. The Company performs its annual test of impairment of goodwill as of December 31st of each year and whenever events or changes in circumstances suggest that the carrying amount may not be recoverable using the two-step process required by ASC 350, Intangibles – Goodwill and Other Based on the aforementioned evaluation, the Company believes that, as of the balance sheet date presented, none of the Company’s goodwill or other long-lived assets was impaired. The Company did not have any intangible assets with indefinite lives as of December 31, 2018 or 2017.
Allowance for Doubtful Accounts	Allowance for Doubtful Accounts The Company reduces gross trade accounts receivable for an allowance for doubtful accounts. The allowance for doubtful accounts is the Company’s best estimate of the amount of probable credit losses in its existing accounts receivable. The allowance for doubtful accounts is reviewed on a regular basis, and all past due balances are reviewed individually for collectability. Account balances are charged against the allowance after all means of collection have been exhausted and the potential for recovery is considered remote. Provisions for doubtful accounts are recorded in general and administrative expense. Below is a summary of the changes in the Company’s allowance for doubtful accounts for the years ended December 31, 2018, 2017, and 2016. Balance at Beginning of Year Provision Acquired in Business Combinations Write-offs, Net of Recoveries Balance at End of Year Year ended December 31, 2016 $ 1,715 $ 894 — $ (648 ) $ 1,961 Year ended December 31, 2017 $ 1,961 $ 806 — $ (984 ) $ 1,783 Year ended December 31, 2018 $ 1,783 $ 986 — $ (670 ) $ 2,099
Property and Equipment and Other Capitalized Assets	Property and Equipment and Other Capitalized Assets Property and equipment and other capitalized assets are stated at cost. Property and equipment acquired through acquisitions of businesses are initially recorded at fair value. Depreciation is calculated on the straight-line method based on the month the asset is placed in service over the following estimated useful lives: Estimated Useful Life Furniture and fixtures 5 - 10 years Computer equipment and software 3 years Internal-use software and website development costs 3 - 5 years Leasehold improvements Shorter of useful life or remaining duration of lease Property and equipment and other capitalized assets consist of the following: As of December 31, 2018 2017 Furniture and fixtures $ 1,266 $ 1,554 Computer equipment and software 4,201 3,863 Leasehold improvements 3,844 2,887 Internal-use software and website development costs 29,692 26,702 39,003 35,006 Less: accumulated depreciation and amortization (28,102 ) (25,220 ) $ 10,901 $ 9,786 Depreciation expense was $4.4 million, $4.5 million, and $4.1 million for the years ended December 31, 2018, 2017, and 2016, respectively. Repairs and maintenance charges that do not increase the useful life of the assets are charged to operations as incurred. The Company wrote off approximately $1.5 million, $0.6 million, and $1.1 million of fully depreciated assets that were no longer in service during 2018, 2017, and 2016, respectively. Depreciation expense is classified as a component of operating expense in the Company’s results of operations.
Internal-Use Software and Website Development Costs	Internal-Use Software and Website Development Costs The Company capitalizes costs incurred during the development of its website applications and infrastructure as well as certain costs relating to internal-use software. The Company begins to capitalize costs to develop software and website applications when planning stage efforts are successfully completed, management has authorized and committed project funding, and it is probable that the project will be completed and the software will be used as intended. Judgment is required in determining the point at which various projects enter the state at which costs may be capitalized, in assessing the ongoing value of the capitalized costs and in determining the estimated useful lives over which the costs are amortized, which is generally four years. To the extent that the Company changes the manner in which it develops and tests new features and functionalities related to its websites, assesses the ongoing value of capitalized assets, or determines the estimated useful lives over which the costs are amortized, the amount of website development costs it capitalizes and amortizes in future periods would be impacted. The estimated useful life of costs capitalized is evaluated for each specific project. Capitalized internal-use software and website development costs are reviewed for recoverability whenever events or changes in circumstances indicate that the carrying amount of the asset may not be recoverable. An impairment loss would be recognized only if the carrying amount of the asset is not recoverable and exceeds its fair value. The Company capitalized internal-use software and website development costs of $3.0 million, $2.9 million, and $2.8 million for the years ended December 31, 2018, 2017, and 2016, respectively.
Concentrations of Credit Risk and Off-Balance Sheet Risk	Concentrations of Credit Risk and Off-Balance Sheet Risk Financial instruments that potentially expose the Company to concentrations of credit risk consist mainly of cash and cash equivalents, investments and accounts receivable. The Company maintains its cash and cash equivalents and investments principally in accredited financial institutions of high credit standing. The Company routinely assesses the credit worthiness of its customers. The Company generally has not experienced any significant losses related to individual customers or groups of customers in any particular industry or area. The Company does not require collateral. Due to these factors, no additional credit risk beyond amounts provided for collection losses is believed by one management to be probable in the Company’s accounts receivable. At December 31, 2018, no customer represented 10% of total accounts receivable. One single customer represented 10% of total accounts receivable at December 31, 2017. No single customer accounted for 10% or more of total revenues in the years ended December 31, 2018, 2017, or 2016.
Income Taxes	Income Taxes The Company’s deferred tax assets and liabilities are recognized based on temporary differences between the financial reporting and income tax bases of assets and liabilities using statutory rates. A valuation allowance is established against net deferred tax assets if, based upon the weight of available evidence, it is more likely than not that some or all of the deferred tax assets will not be realized. The Company records a liability for unrecognized tax benefits resulting from uncertain tax positions taken or expected to be taken in a tax return using a “more likely than not” threshold as required by the provisions of ASC 740-10, Accounting for Uncertainty in Income Taxes The Company recognizes interest and penalties related to unrecognized tax benefits, if any, in income tax expense.
Stock-Based Compensation	Stock-Based Compensation The Company has stock-based employee compensation plans which are more fully described in Note 11. Stock-based compensation cost is measured at the grant date based on the fair value of the award and is recognized in the Consolidated Statement of Income and Comprehensive Income using the straight-line method over the vesting period of the award. The Company uses the Black-Scholes option-pricing model to determine the fair value of stock option awards.
Comprehensive Income	Comprehensive Income Comprehensive income includes all changes in equity during a period, except those resulting from investments by stockholders and distributions to stockholders. The Company's comprehensive income includes changes in the fair value of the Company’s unrealized gains on available for sale securities and foreign currency translation adjustments. There were no reclassifications out of accumulated other comprehensive income in the periods ended December 31, 2018, 2017, or 2016.
Foreign Currency	Foreign Currency The functional currency for each of the Company’s subsidiaries is the local currency of the country in which it is incorporated. All assets and liabilities are translated into U.S. dollar equivalents at the exchange rate in effect on the balance sheet date or at a historical rate. Revenues and expenses are translated at average exchange rates. Translation gains or losses are recorded in stockholders’ equity as an element of accumulated other comprehensive loss.
Net Income Per Share	Net Income Per Share Basic earnings per share is computed based on the weighted average number of common shares and vested restricted stock units outstanding during the period. Because the holders of unvested restricted stock units do not have non-forfeitable rights to dividends or dividend equivalents, the Company does not consider these restricted stock units to be participating securities that should be included in its computation of earnings per share under the two-class method. Diluted earnings per share is computed using the weighted average number of common shares and vested, undelivered restricted stock units outstanding during the period, plus the dilutive effect of potential future issuances of common stock relating to stock option and restricted stock unit programs using the treasury stock method. In calculating diluted earnings per share, the dilutive effect of stock options and restricted stock units is computed using the average market price for the respective period. In addition, the assumed proceeds under the treasury stock method include the average unrecognized compensation expense of stock options and restricted stock units that are in-the-money. This results in the “assumed” buyback of additional shares, thereby reducing the dilutive impact of stock options and restricted stock units. A reconciliation of the numerator and denominator used in the calculation of basic and diluted net income per share is as follows: For the Years Ended December 31, 2018 2017 2016 Numerator: Net income $ 12,955 $ 6,803 $ 2,419 Denominator: Basic: Weighted average shares of common stock and vested, undelivered restricted stock units outstanding 27,738,178 27,550,044 29,953,798 Diluted: Weighted average shares of common stock and vested, undelivered restricted stock units outstanding 27,678,959 27,550,044 29,953,798 Effect of potentially dilutive shares 973,855 721,340 819,734 Total weighted average shares of common stock and vested, undelivered restricted stock units outstanding and potentially dilutive shares 28,652,814 28,271,384 30,773,532 Calculation of Net Income Per Common Share: Basic: Net income applicable to common stockholders $ 12,955 $ 6,803 $ 2,419 Weighted average shares of stock outstanding 27,738,178 27,550,044 29,953,798 Net income per common share $ 0.47 $ 0.25 $ 0.08 Diluted: Net income applicable to common stockholders $ 12,955 $ 6,803 $ 2,419 Weighted average shares of stock outstanding 28,652,814 28,271,384 30,773,532 Net income per common share(1) $ 0.45 $ 0.24 $ 0.08 (1) In calculating diluted earnings per share, 0.5 million, 0.7 million, and 1.3 million shares related to outstanding stock options and unvested, undelivered restricted stock units were excluded for the years ended December 31, 2018, 2017, and 2016, respectively, because they were anti-dilutive.
Recent Accounting Pronouncements	Recent Accounting Pronouncements Accounting Guidance Adopted in 2018 In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606) , Revenue Recognition The standard may be applied retrospectively to each prior period presented, or using the modified retrospective approach, with the cumulative effect recognized as of the date of initial application. The Company adopted the standard effective January 1, 2018, using the modified retrospective approach (see Note 3). Accounting Guidance Not Yet Adopted as of December 31, 2018 In February 2016, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) No. 2016-02, Leases Codification Improvements to Topic 842 (Leases) Leases Targeted Improvements In January 2017, the FASB issued ASU No. 2017-04, Intangibles-Goodwill and Other (Topic 350), Simplifying the Test for Goodwill Impairment ("ASU 2017-04"). ASU 2017-04 eliminates the requirement to calculate the implied fair value of goodwill to measure a goodwill impairment charge (step 2 of the goodwill impairment test) and instead requires only a one-step quantitative impairment test, performed by comparing the fair value of goodwill with its carrying amount. ASU 2017-04 is effective on a prospective basis effective for goodwill impairment tests in fiscal years beginning after December 15, 2019. Early adoption is permitted for goodwill impairment tests performed on testing dates after January 1, 2017.

Summary of Significant Accoun_3

Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2018
Accounting Policies [Abstract]
Summary of Changes in Company's Allowance for Doubtful Accounts	Below is a summary of the changes in the Company’s allowance for doubtful accounts for the years ended December 31, 2018, 2017, and 2016. Balance at Beginning of Year Provision Acquired in Business Combinations Write-offs, Net of Recoveries Balance at End of Year Year ended December 31, 2016 $ 1,715 $ 894 — $ (648 ) $ 1,961 Year ended December 31, 2017 $ 1,961 $ 806 — $ (984 ) $ 1,783 Year ended December 31, 2018 $ 1,783 $ 986 — $ (670 ) $ 2,099
Estimated Useful Lives of Property and Equipment and Other Capitalized Assets	Depreciation is calculated on the straight-line method based on the month the asset is placed in service over the following estimated useful lives: Estimated Useful Life Furniture and fixtures 5 - 10 years Computer equipment and software 3 years Internal-use software and website development costs 3 - 5 years Leasehold improvements Shorter of useful life or remaining duration of lease
Property and Equipment and Other Capitalized Assets	Property and equipment and other capitalized assets consist of the following: As of December 31, 2018 2017 Furniture and fixtures $ 1,266 $ 1,554 Computer equipment and software 4,201 3,863 Leasehold improvements 3,844 2,887 Internal-use software and website development costs 29,692 26,702 39,003 35,006 Less: accumulated depreciation and amortization (28,102 ) (25,220 ) $ 10,901 $ 9,786
Reconciliation of Numerator and Denominator Used in Calculation of Basic and Diluted Net Income Per Share	A reconciliation of the numerator and denominator used in the calculation of basic and diluted net income per share is as follows: For the Years Ended December 31, 2018 2017 2016 Numerator: Net income $ 12,955 $ 6,803 $ 2,419 Denominator: Basic: Weighted average shares of common stock and vested, undelivered restricted stock units outstanding 27,738,178 27,550,044 29,953,798 Diluted: Weighted average shares of common stock and vested, undelivered restricted stock units outstanding 27,678,959 27,550,044 29,953,798 Effect of potentially dilutive shares 973,855 721,340 819,734 Total weighted average shares of common stock and vested, undelivered restricted stock units outstanding and potentially dilutive shares 28,652,814 28,271,384 30,773,532 Calculation of Net Income Per Common Share: Basic: Net income applicable to common stockholders $ 12,955 $ 6,803 $ 2,419 Weighted average shares of stock outstanding 27,738,178 27,550,044 29,953,798 Net income per common share $ 0.47 $ 0.25 $ 0.08 Diluted: Net income applicable to common stockholders $ 12,955 $ 6,803 $ 2,419 Weighted average shares of stock outstanding 28,652,814 28,271,384 30,773,532 Net income per common share(1) $ 0.45 $ 0.24 $ 0.08 (1) In calculating diluted earnings per share, 0.5 million, 0.7 million, and 1.3 million shares related to outstanding stock options and unvested, undelivered restricted stock units were excluded for the years ended December 31, 2018, 2017, and 2016, respectively, because they were anti-dilutive.

Revenue (Tables)

Revenue (Tables)	12 Months Ended
	Dec. 31, 2018
Revenue Recognition [Abstract]
Disaggregated Revenue	The following table depicts the disaggregation of revenue according to categories consistent with how the Company evaluates its financial performance: Year Ended December 31, 2018 2017 2016 Total Online $ 121,333 $ 108,388 $ 101,827 Total Online by Geographic Area: North America: North America IT Deal Alert $ 43,342 $ 36,622 $ 25,743 North America Core Online 39,318 36,586 43,296 Total North America Online 82,660 73,208 69,039 International: International IT Deal Alert 15,707 12,907 5,661 International Core Online 22,966 22,273 27,127 Total International Online 38,673 35,180 32,788 Total Online by Product: IT Deal Alert: North America IT Deal Alert 43,342 36,622 25,743 International IT Deal Alert 15,707 12,907 5,661 Total IT Deal Alert 59,049 49,529 31,404 Core Online: North America Core Online 39,318 36,586 43,296 International Core Online 22,966 22,273 27,127 Total Core Online 62,284 58,859 70,423 Total Events — 168 4,798 Total Revenues $ 121,333 $ 108,556 $ 106,625
Schedule of Accounts Receivable and Contract Liabilities	Accounts Receivable Year-to-Date Activity (in thousands) Balance Accounts Receivable December 31,2017 prior to adoption of ASC 606 $ 29,601 Adjustment to accounts receivable as a result of adoption of ASC 606 3,510 Balance at January 1, 2018 $ 26,091 Contract Liabilities Year-to-Date Activity (in thousands) Balance Deferred Revenue December 31,2017 prior to adoption of ASC 606 $ 7,598 Adjustment to deferred revenue as a result of adoption of ASC 606 3,510 Balance at January 1, 2018 4,088 Deferral of revenue 5,573 Recognition of previously unearned revenue 4,088 Balance at December 31,2018 $ 5,573

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	12 Months Ended
	Dec. 31, 2018
Fair Value Disclosures [Abstract]
Assets and Liabilities Carried at Fair Value and Measured on Recurring Basis	The fair value hierarchy of the Company’s financial assets and liabilities carried at fair value and measured on a recurring basis is as follows: Fair Value Measurements at Reporting Date Using December 31, 2018 Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Assets: Money market funds(1) $ 15,070 $ 15,070 $ — $ — Short-term investments(2) 500 — 500 — Long-term investments(2) — — — — Total assets $ 15,570 $ 15,070 $ 500 $ — Fair Value Measurements at Reporting Date Using December 31, 2017 Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Assets: Money market funds(1) $ 7,155 $ 7,155 $ — $ — Short-term investments(2) 7,650 — 7,650 — Long-term investments(2) 496 — 496 — Total assets $ 15,301 $ 7,155 $ 8,146 $ — (1) Included in cash and cash equivalents on the accompanying consolidated balance sheets; valued at quoted market prices in active markets. (2) Short-term and long-term investments consist of municipal bonds, corporate bonds, U.S. Treasury securities, and government agency bonds; their fair value is calculated using an interest rate yield curve for similar instruments.

Cash, Cash Equivalents and In_2

Cash, Cash Equivalents and Investments (Tables)	12 Months Ended
	Dec. 31, 2018
Cash And Cash Equivalents [Abstract]
Cash and Cash Equivalents	Cash and cash equivalents consisted of the following: As of December 31, 2018 2017 Cash $ 19,603 $ 18,811 Money market funds 15,070 7,155 Total cash and cash equivalents $ 34,673 $ 25,966
Short-term and Long-term Investments	Short-term and long-term investments consisted of the following: December 31, 2018 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Estimated Fair Value Short-term and long-term investments: U.S. Treasury securities $ 500 $ — $ — $ 500 Government agency bonds — — — $ — Municipal bonds — — — $ — Corporate bonds $ — — — $ — Total short-term and long-term investments $ 500 $ — $ — $ 500 December 31, 2017 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Estimated Fair Value Short-term and long-term investments: U.S. Treasury securities $ 1,499 $ — $ (6 ) $ 1,493 Government agency bonds 1,003 — (4 ) $ 999 Municipal bonds 4,169 — (14 ) $ 4,155 Corporate bonds 1,502 — (3 ) $ 1,499 Total short-term and long-term investments $ 8,173 $ — $ (27 ) $ 8,146

Goodwill (Tables)

Goodwill (Tables)	12 Months Ended
	Dec. 31, 2018
Goodwill And Intangible Assets Disclosure [Abstract]
Changes in Carrying Amount of Goodwill	The changes in the carrying amount of goodwill for the years ended December 31, 2018 and 2017 are as follows: As of December 31, 2018 2017 Balance as of beginning of year $ 93,793 $ 93,469 Effect of exchange rate changes (202 ) 324 Additions 96 — Balance as of end of year $ 93,687 $ 93,793

Intangible Assets (Tables)

Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2018
Goodwill And Intangible Assets Disclosure [Abstract]
Summary of Intangible Assets	The following table summarizes the Company’s intangible assets, net: As of December 31, 2018 Estimated Useful Lives (Years) Gross Carrying Amount Accumulated Amortization Net Customer, affiliate and advertiser relationships 5-17 $ 6,500 $ (6,256 ) 244 Developed websites, technology and patents 10 1,502 (958 ) 544 Trademark, trade name and domain name 5-8 1,784 (1,730 ) 54 Proprietary user information database and internet traffic 5 1,110 (1,110 ) — Non-Compete agreement 1.5 10 (3 ) 7 Total intangible assets $ 10,906 $ (10,057 ) $ 849 As of December 31, 2017 Estimated Useful Lives (Years) Gross Carrying Amount Accumulated Amortization Net Customer, affiliate and advertiser relationships 5 $ 6,938 $ (6,938 ) $ — Developed websites, technology and patents 10 1,342 (907 ) 435 Trademark, trade name and domain name 8 1,802 (1,731 ) 71 Proprietary user information database and internet traffic 5 1,202 (1,202 ) — Total intangible assets $ 11,284 $ (10,778 ) $ 506
Schedule of Amortization Expense of Intangible Assets	The Company expects amortization expense of intangible assets to be as follows: Years Ending December 31: Amortization Expense 2019 $ 133 2020 113 2021 129 2022 159 2023 315 $ 849

Loan Agreement and Prior Term_2

Loan Agreement and Prior Term Loan Agreement (Tables)	12 Months Ended
	Dec. 31, 2018
Debt Disclosure [Abstract]
Summary of Term Loan Agreement	Expected future installment payments on the principal by year and amounts included in the Company’s Consolidated Balance Sheet as of December 31, 2018 related to the Loan Agreement are as follows: Years Ending December 31: 2019 $ 1,250 2020 1,250 2021 1,875 2022 2,500 2023 18,125 Total principal on loan agreement 25,000 Unamortized debt issuance costs (45 ) Carrying amount of loan agreement 24,955 Less: current portion of loan agreement, net of $9 in unamortized debt issuance costs (1,241 ) Long-term portion of loan agreement, net of $36 in unamortized debt issuance costs $ 23,714

Commitments and Contingencies (

Commitments and Contingencies (Tables)	12 Months Ended
	Dec. 31, 2018
Commitments And Contingencies Disclosure [Abstract]
Schedule of Future Minimum Lease Payments	Future minimum lease payments under the Company’s noncancelable operating leases at December 31, 2018 are as follows: Years Ending December 31: Minimum Lease Payments 2019 $ 4,180 2020 3,629 2021 3,721 2022 3,397 2023 3,397 Thereafter 21,267 $ 39,591

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	12 Months Ended
	Dec. 31, 2018
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Fair Values of Options Granted Estimated Using Weighted-Average Assumptions	The Company uses the Black-Scholes option pricing model to calculate the grant-date fair value of an award. The Company calculated the fair values of the options granted using the following estimated weighted-average assumptions: Years Ended December 31, 2018 2017 2016 Expected volatility 39 % 43 % 46 % Expected term 6 years 6 years 6 years Risk-free interest rate 2.82 % 1.87 % 1.90 % Expected dividend yield — % — % — % Weighted-average grant date fair value per share $ 11.94 $ 4.61 $ 3.91
Summary of Stock Option Activity Under Company's Stock Option Plans	A summary of the stock option activity under the Company’s stock option plans for the year ended December 31, 2018 is presented below: Options Outstanding Weighted-Average Exercise Price Per Share Weighted-Average Remaining Contractual Term in Years Aggregate Intrinsic Value Options outstanding at December 31, 2017 344,090 $ 6.41 Granted 20,000 28.42 Exercised (178,090 ) 5.64 $ 2,704 Forfeited — — Canceled — — Options outstanding at December 31, 2018 186,000 $ 9.50 4.32 $ 828 Options exercisable at December 31, 2018 166,000 $ 7.22 3.70 $ 828 Options vested or expected to vest at December 31, 2018 184,108 $ 9.31 4.26 $ 828
Summary of Restricted Stock Unit Award Activity Under Company's Plans	Restricted stock unit awards are valued at the market price of a share of the Company’s common stock on the date of the grant. A summary of the restricted stock unit award activity under the Company’s plans for the year ended December 31, 2018 is presented below: Shares Weighted-Average Grant Date Fair Value Per Share Aggregate Intrinsic Value Nonvested outstanding at December 31, 2017 1,414,000 $ 9.37 Granted 542,202 27.59 Vested (752,941 ) 9.26 Forfeited (6,000 ) 9.57 Nonvested outstanding at December 31, 2018 1,197,261 $ 17.69 $ 14,619

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Schedule of Income Before Provision for Income Taxes	Income before provision for income taxes was as follows: Years Ended December 31, 2018 2017 2016 U.S. $ 11,917 $ 9,435 $ 3,351 Foreign 2,926 282 1,666 Income before income taxes $ 14,843 $ 9,717 $ 5,017
Income Tax Provision	The income tax provision for the years ended December 31, 2018, 2017, and 2016 consisted of the following: Years Ended December 31, 2018 2017 2016 Current: Federal $ 1,540 $ 1,543 $ 1,627 State 540 419 (569 ) Foreign (55 ) 57 415 Total current 2,025 2,019 1,473 Deferred: Federal (65 ) 598 1,592 State (53 ) 382 (21 ) Foreign (19 ) (85 ) (446 ) Total deferred (137 ) 895 1,125 $ 1,888 $ 2,914 $ 2,598
Difference by Applying the Statutory Federal Income Tax Rate	The income tax provision for the years ended December, 31, 2018, 2017 and 2016 differs from the amounts computed by applying the statutory federal income tax rate to consolidated income before provision for income taxes as follows: Years Ended December 31, 2018 2017 2016 Provision computed at statutory rate $ 3,116 $ 3,401 $ 1,757 Increase resulting from: Difference in rates for foreign jurisdictions 93 37 (146 ) Tax exempt interest income (2 ) (12 ) (21 ) Stock-based compensation (1,708 ) (304 ) 315 Other non-deductible expenses 252 (101 ) 67 Non-deductible officers compensation 198 447 738 State income tax provision 396 653 (380 ) Losses not benefitted 23 4 1 Subsidiary earnings taxed in the US (104 ) 127 253 True-up of prior year returns (20 ) (161 ) 11 Research and development credit (279 ) (801 ) — Tax Cuts and Jobs Act of 2017 (11 ) (376 ) — Cancellation of Foreign Subsidiary Debt (127 ) — — Other 61 — 3 Provision for income taxes $ 1,888 $ 2,914 $ 2,598
Significant Components of the Company's Net Deferred Tax Assets and Liabilities	Significant components of the Company’s net deferred tax assets and liabilities are as follows: As of December 31, 2018 2017 Deferred tax assets: Net operating loss carryforwards $ 33 $ 166 Contract liabilities — 187 Accruals and allowances 1,253 972 Stock-based compensation 1,286 815 Deferred rent expense 1,267 1,327 Other 4 4 Gross deferred tax assets 3,843 3,471 Less valuation allowance (33 ) (352 ) Total deferred tax assets 3,810 3,119 Deferred tax liabilities: Intangible asset amortization (2,603 ) (2,036 ) Depreciation (1,814 ) (1,823 ) Total deferred tax liabilities (4,417 ) (3,859 ) Net deferred tax liabilities $ (607 ) $ (740 ) As reported: Non-current deferred tax assets $ 55 $ 98 Non-current deferred tax liabilities $ (662 ) $ (838 )
Reconciliation of the Beginning and Ending Amounts of Unrecognized Tax Benefits	A reconciliation of the beginning and ending amounts of unrecognized tax benefits for the years ended December 31, 2018, 2017, and 2016 is as follows: 2018 2017 2016 Balance at beginning of year $ — $ — $ 184 Reductions due to amnesty and settlement — — (188 ) Payments — — — Gross increases related to positions taken in prior periods — — 4 Balance at end of year $ — $ — $ —

Segment Information (Tables)

Segment Information (Tables)	12 Months Ended
	Dec. 31, 2018
Segment Reporting [Abstract]
Net Sales to Unaffiliated Customers by Geographic Area	Net sales to unaffiliated customers by geographic area were as follows: Years Ended December 31, 2018 2017 2016 United States $ 89,340 $ 77,982 $ 79,535 United Kingdom 14,391 12,544 9,944 Other International 17,602 18,030 17,146 Total $ 121,333 $ 108,556 $ 106,625
Long-Lived Assets by Geographic Area	Long-lived assets by geographic area were as follows: Years Ended December 31, 2018 2017 U.S. $ 101,051 $ 98,683 International 4,386 5,402 Total $ 105,437 $ 104,085

Organization and Operations - A

Organization and Operations - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2018Website
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Number of websites	140

Summary of Significant Accoun_4

Summary of Significant Accounting Policies - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2018USD ($)SegmentReporting_UnitCustomer	Dec. 31, 2017USD ($)Customer	Dec. 31, 2016USD ($)Customer	Jan. 01, 2019USD ($)
Significant Accounting Policies [Line Items]
Reclassifications out of accumulated other comprehensive income	$ 0	$ 0	$ 0
Number of reporting segment | Segment	1
Number of reporting unit | Reporting_Unit	1
Intangible assets with indefinite lives	$ 0	0
Depreciation	4,400,000	4,500,000	4,100,000
Write off of fully depreciated assets no longer in service	1,500,000	600,000	1,100,000
Capitalized internal-use software and website development costs	$ 3,000,000	$ 2,900,000	$ 2,800,000
Customer Concentration Risk [Member] | Accounts Receivable [Member]
Significant Accounting Policies [Line Items]
Number of customers represented 10% or more of total accounts receivable | Customer	0	1
Concentration risk, percentage	10.00%
Customer Concentration Risk [Member] | Sales Revenue, Net [Member]
Significant Accounting Policies [Line Items]
Number of customers accounted for Specific revenue | Customer	0	0	0
Minimum [Member]
Significant Accounting Policies [Line Items]
Estimated useful lives	18 months
Minimum [Member] | Accounting Standards Update 2016-02 [Member] | Subsequent Event [Member]
Significant Accounting Policies [Line Items]
Operating lease, right-of-use asset				$ 28,000,000
Operating lease, liability				28,000,000
Maximum [Member]
Significant Accounting Policies [Line Items]
Estimated useful lives	17 years
Maximum [Member] | Accounting Standards Update 2016-02 [Member] | Subsequent Event [Member]
Significant Accounting Policies [Line Items]
Operating lease, right-of-use asset				32,000,000
Operating lease, liability				$ 32,000,000

Summary of Significant Accoun_5

Summary of Significant Accounting Policies - Summary of Changes in Company's Allowance for Doubtful Accounts (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Regulatory Assets [Abstract]
Balance at Beginning of Year	$ 1,783	$ 1,961	$ 1,715
Provision	986	806	894
Acquired in Business Combinations	0	0	0
Write-offs, Net of Recoveries	(670)	(984)	(648)
Balance at End of Year	$ 2,099	$ 1,783	$ 1,961

Summary of Significant Accoun_6

Summary of Significant Accounting Policies - Estimated Useful Lives of Property and Equipment and Other Capitalized Assets (Detail)	12 Months Ended
	Dec. 31, 2018
Computer Equipment and Software [Member]
Property, Plant and Equipment [Line Items]
Estimated useful life	3 years
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Leasehold improvements	Shorter of useful life or remaining duration of lease
Minimum [Member] | Furniture and Fixtures [Member]
Property, Plant and Equipment [Line Items]
Estimated useful life	5 years
Minimum [Member] | Internal-use software and website development costs
Property, Plant and Equipment [Line Items]
Estimated useful life	3 years
Maximum [Member] | Furniture and Fixtures [Member]
Property, Plant and Equipment [Line Items]
Estimated useful life	10 years
Maximum [Member] | Internal-use software and website development costs
Property, Plant and Equipment [Line Items]
Estimated useful life	5 years

Summary of Significant Accoun_7

Summary of Significant Accounting Policies - Property and Equipment and Other Capitalized Assets (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 39,003	$ 35,006
Less: accumulated depreciation and amortization	(28,102)	(25,220)
Property and equipment, net	10,901	9,786
Furniture and Fixtures [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	1,266	1,554
Computer Equipment and Software [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	4,201	3,863
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	3,844	2,887
Internal-use software and website development costs
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 29,692	$ 26,702

Summary of Significant Accoun_8

Summary of Significant Accounting Policies - Reconciliation of Numerator and Denominator Used in Calculation of Basic and Diluted Net Income Per Share (Detail) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Numerator:
Net income	$ 12,955	$ 6,803	$ 2,419
Basic:
Weighted average shares of common stock and vested, undelivered restricted stock units outstanding	27,738,178	27,550,044	29,953,798
Diluted:
Weighted average shares of common stock and vested, undelivered restricted stock units outstanding	27,678,959	27,550,044	29,953,798
Effect of potentially dilutive shares	973,855	721,340	819,734
Total weighted average shares of common stock and vested, undelivered restricted stock units outstanding and potentially dilutive shares	28,652,814	28,271,384	30,773,532
Basic:
Net income applicable to common stockholders	$ 12,955	$ 6,803	$ 2,419
Weighted average shares of stock outstanding	27,738,178	27,550,044	29,953,798
Net income per common share	$ 0.47	$ 0.25	$ 0.08
Diluted:
Net income applicable to common stockholders	$ 12,955	$ 6,803	$ 2,419
Weighted average shares of stock outstanding	28,652,814	28,271,384	30,773,532
Net income per common share	$ 0.45	$ 0.24	$ 0.08

Summary of Significant Accoun_9

Summary of Significant Accounting Policies - Reconciliation of Numerator and Denominator Used in Calculation of Basic and Diluted Net Income Per Share (Parenthetical) (Detail) - shares shares in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Earnings Per Share [Abstract]
Outstanding stock options and unvested restricted stock units excluded from computation of diluted EPS	0.5	0.7	1.3

Revenue - Disaggregated Revenue

Revenue - Disaggregated Revenue (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Disaggregation Of Revenue [Line Items]
Total revenues	$ 121,333	$ 108,556	$ 106,625
Online [Member]
Disaggregation Of Revenue [Line Items]
Total revenues	121,333	108,388	101,827
IT Deal Alert [Member]
Disaggregation Of Revenue [Line Items]
Total revenues	59,049	49,529	31,404
Core Online [Member]
Disaggregation Of Revenue [Line Items]
Total revenues	62,284	58,859	70,423
Events [Member]
Disaggregation Of Revenue [Line Items]
Total revenues		168	4,798
North America [Member] | Online [Member]
Disaggregation Of Revenue [Line Items]
Total revenues	82,660	73,208	69,039
North America [Member] | IT Deal Alert [Member]
Disaggregation Of Revenue [Line Items]
Total revenues	43,342	36,622	25,743
North America [Member] | Core Online [Member]
Disaggregation Of Revenue [Line Items]
Total revenues	39,318	36,586	43,296
International [Member] | Online [Member]
Disaggregation Of Revenue [Line Items]
Total revenues	38,673	35,180	32,788
International [Member] | IT Deal Alert [Member]
Disaggregation Of Revenue [Line Items]
Total revenues	15,707	12,907	5,661
International [Member] | Core Online [Member]
Disaggregation Of Revenue [Line Items]
Total revenues	$ 22,966	$ 22,273	$ 27,127

Revenue - Additional Informatio

Revenue - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Jan. 01, 2018	Dec. 31, 2017
Deferred Revenue Arrangement [Line Items]
Contract liabilities	$ 5,573		$ 7,598
Minimum [Member]
Deferred Revenue Arrangement [Line Items]
Deferred revenue payment terms	30 days
Maximum [Member]
Deferred Revenue Arrangement [Line Items]
Deferred revenue payment terms	90 days
Amortization period of contract assets	1 year
Contract with customer contract period	1 year
Revenue recognition timing of invoicing period	1 year
ASU 2014-09 [Member]
Deferred Revenue Arrangement [Line Items]
Contract liabilities	$ 5,573	$ 4,088	7,598
Contract Liabilities [Member]
Deferred Revenue Arrangement [Line Items]
Accrued sales incentives	3,500		2,700
Contract Liabilities [Member] | ASU 2014-09 [Member]
Deferred Revenue Arrangement [Line Items]
Contract liabilities	$ 5,600
Contract Liabilities [Member] | ASU 2014-09 [Member] | Prior to Adoption of ASC 606 [Member]
Deferred Revenue Arrangement [Line Items]
Contract liabilities			$ 7,600
Contract Liabilities [Member] | ASU 2014-09 [Member] | Impact of Adoption of ASC 606 [Member]
Deferred Revenue Arrangement [Line Items]
Contract liabilities		$ (3,500)

Revenue - Schedule of Accounts

Revenue - Schedule of Accounts Receivable and Contract Liabilities (Detail) - USD ($) $ in Thousands	Jan. 01, 2018	Dec. 31, 2018	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Deferred Revenue Arrangement [Line Items]
Accounts Receivable		$ 30,042	$ 30,042	$ 29,601
Contract Liabilities, Balance	$ 7,598	7,598
Adjustment to deferred revenue as a result of adoption of ASC 606		(2,025)		1,519	$ (1,516)
Contract Liabilities, Balance		5,573	5,573	7,598
ASU 2014-09 [Member]
Deferred Revenue Arrangement [Line Items]
Accounts Receivable	26,091
Contract Liabilities, Balance	7,598	7,598	4,088
Contract Liabilities, Deferral of revenue			5,573
Contract Liabilities, Recognition of previously unearned revenue			4,088
Contract Liabilities, Balance	4,088	$ 5,573	$ 5,573	7,598
ASU 2014-09 [Member] | Prior to Adoption of ASC 606 [Member]
Deferred Revenue Arrangement [Line Items]
Accounts Receivable				$ 29,601
ASU 2014-09 [Member] | Impact of Adoption of ASC 606 [Member]
Deferred Revenue Arrangement [Line Items]
Accounts Receivable	3,510
Adjustment to deferred revenue as a result of adoption of ASC 606	$ 3,510

Fair Value Measurements - Asset

Fair Value Measurements - Assets and Liabilities Carried at Fair Value and Measured on Recurring Basis (Detail) - Fair Value, Measurements, Recurring [Member] - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Assets:
Total assets	$ 15,570	$ 15,301
Money Market Funds [Member]
Assets:
Total assets	15,070	7,155
Short-Term Investments [Member]
Assets:
Total assets	500	7,650
Long-term Investments [Member]
Assets:
Total assets		496
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Assets:
Total assets	15,070	7,155
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Money Market Funds [Member]
Assets:
Total assets	15,070	7,155
Significant Other Observable Inputs (Level 2) [Member]
Assets:
Total assets	500	8,146
Significant Other Observable Inputs (Level 2) [Member] | Short-Term Investments [Member]
Assets:
Total assets	$ 500	7,650
Significant Other Observable Inputs (Level 2) [Member] | Long-term Investments [Member]
Assets:
Total assets		$ 496

Acquisition - Additional Inform

Acquisition - Additional Information (Detail) $ in Thousands	Aug. 01, 2018USD ($)	Dec. 17, 2012USD ($)Installment	Dec. 31, 2016USD ($)	Dec. 31, 2014USD ($)	Dec. 31, 2013USD ($)	Jan. 31, 2016USD ($)	Dec. 31, 2015USD ($)
Business Acquisition [Line Items]
Cash paid for acquisition				$ 1,200	$ 1,200
Payment of earnout liabilities			$ 459
Measurement Input, Discount Rate [Member]
Business Acquisition [Line Items]
Discount rate of projected net cash flows		10
Significant Unobservable Inputs (Level 3) [Member] | Measurement Input, Discount Rate [Member]
Business Acquisition [Line Items]
Discount rate of projected net cash flows		28
LeMagIT [Member]
Business Acquisition [Line Items]
Cash paid for acquisition		$ 2,200
Potential future earn-out		$ 700
Number of installments for acquisition cost | Installment		2
Contingent consideration							$ 1,300
Contingent consideration, holdback amount						$ 400
Payment of earnout liabilities			$ 500
Oceanos Marketing, Inc [Member]
Business Acquisition [Line Items]
Consideration paid on acquisition	$ 600

Cash, Cash Equivalents and In_3

Cash, Cash Equivalents and Investments - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2018USD ($)Security	Dec. 31, 2017USD ($)Security	Dec. 31, 2016USD ($)
Cash And Cash Equivalents [Abstract]
Liquid investments with maturities	3 months
Cumulative unrealized loss, net of taxes	$ 15,000	$ 17,000	$ 30,000
Realized gains or losses	$ 0	$ 0	$ 0
Number of securities in unrealized loss position | Security	0	15
Unrealized loss available for sale securities		$ 27,000
Unrealized loss available for sale securities fair value		$ 8,100,000
Municipal bonds maturity date	Jan. 31, 2019

Cash, Cash Equivalents and In_4

Cash, Cash Equivalents and Investments - Cash and Cash Equivalents (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Cash And Cash Equivalents [Abstract]
Cash	$ 19,603	$ 18,811
Money market funds	15,070	7,155
Total cash and cash equivalents	$ 34,673	$ 25,966

Cash, Cash Equivalents and In_5

Cash, Cash Equivalents and Investments - Short-term and Long-term Investments (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2016
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$ 500	$ 8,173
Gross Unrealized Losses		(27)
Estimated Fair Value	500	8,146
U.S. Treasury Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	500	1,499
Gross Unrealized Losses		(6)
Estimated Fair Value	$ 500	1,493
US Government Agencies Debt Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost		1,003
Gross Unrealized Losses		(4)
Estimated Fair Value		999
Municipal Bonds [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost		4,169
Gross Unrealized Losses		(14)
Estimated Fair Value		4,155
Corporate Bonds [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost		1,502
Gross Unrealized Losses		(3)
Estimated Fair Value		$ 1,499

Goodwill - Changes in Carrying

Goodwill - Changes in Carrying Amount of Goodwill (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Goodwill And Intangible Assets Disclosure [Abstract]
Balance as of beginning of year	$ 93,793	$ 93,469
Effect of exchange rate changes	(202)	324
Additions	96
Balance as of end of year	$ 93,687	$ 93,793

Intangible Assets - Summary of

Intangible Assets - Summary of Intangible Assets (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 10,906	$ 11,284
Accumulated Amortization	(10,057)	(10,778)
Total intangible assets	$ 849	$ 506
Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated useful lives	18 months
Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated useful lives	17 years
Customer, Affiliate and Advertiser Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated useful lives		5 years
Gross Carrying Amount	$ 6,500	$ 6,938
Accumulated Amortization	(6,256)	$ (6,938)
Total intangible assets	$ 244
Customer, Affiliate and Advertiser Relationships [Member] | Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated useful lives	5 years
Customer, Affiliate and Advertiser Relationships [Member] | Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated useful lives	17 years
Developed Websites, Technology and Patents [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated useful lives	10 years	10 years
Gross Carrying Amount	$ 1,502	$ 1,342
Accumulated Amortization	(958)	(907)
Total intangible assets	544	$ 435
Trademarks, Trade Name and Domain Name [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated useful lives		8 years
Gross Carrying Amount	1,784	$ 1,802
Accumulated Amortization	(1,730)	(1,731)
Total intangible assets	$ 54	$ 71
Trademarks, Trade Name and Domain Name [Member] | Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated useful lives	5 years
Trademarks, Trade Name and Domain Name [Member] | Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated useful lives	8 years
Proprietary User Information Database and Internet Traffic [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated useful lives	5 years	5 years
Gross Carrying Amount	$ 1,110	$ 1,202
Accumulated Amortization	$ (1,110)	$ (1,202)
Non-compete Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated useful lives	1 year 6 months
Gross Carrying Amount	$ 10
Accumulated Amortization	(3)
Total intangible assets	$ 7

Intangible Assets - Additional

Intangible Assets - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Finite-Lived Intangible Assets [Line Items]
Remaining amortization period	5 years 2 months 1 day
Amortization of intangible assets	$ 100,000	$ 200,000	$ 800,000
Write off of intangible assets	$ 700,000	$ 0	$ 100,000
Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated useful lives	18 months
Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated useful lives	17 years

Intangible Assets - Schedule of

Intangible Assets - Schedule of Amortization Expense of Intangible Assets (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Goodwill And Intangible Assets Disclosure [Abstract]
2019	$ 133
2020	113
2021	129
2022	159
2023	315
Total intangible assets	$ 849	$ 506

Loan Agreement and Prior Term_3

Loan Agreement and Prior Term Loan Agreement - Additional Information (Detail) $ in Thousands	Dec. 24, 2018USD ($)	Jun. 22, 2017USD ($)	May 09, 2016USD ($)	Dec. 31, 2018USD ($)	Dec. 31, 2017USD ($)	Dec. 31, 2016USD ($)	Jun. 21, 2017USD ($)
Line Of Credit Facility [Line Items]
Aggregate principal amount of term loan borrowed				$ 25,000		$ 50,000
Amortization of deferred issuance costs				298	$ 109	60
Term loan principal payment				32,500	6,250	$ 11,250
Term Loan Agreement [Member]
Line Of Credit Facility [Line Items]
Minimum liquidity requirement for capital stock repurchase		$ 15,000					$ 10,000
Term Loan Agreement [Member] | Quarter Ending March 31, 2018 [Member]
Line Of Credit Facility [Line Items]
Total consolidated leverage ratio, maximum		2.50
Term Loan Agreement [Member] | Quarters Ending On or After March 31, 2020 [Member]
Line Of Credit Facility [Line Items]
Total consolidated leverage ratio, maximum		1.50
Senior Secured Credit Facilities Credit Agreement [Member]
Line Of Credit Facility [Line Items]
Interest expense				1,400	1,400
Amortization of deferred issuance costs				$ 300	100
Credit agreement bearing interest rate				Annual rate of 1.50%
Interest bearing rate			1.50%
LIBOR margin				plus 2.50
Term loan principal payment				$ 32,500	$ 6,300
Senior Secured Credit Facilities Credit Agreement [Member] | Federal Funds Effective Rate [Member]
Line Of Credit Facility [Line Items]
Applicable interest rate on borrowings			0.50%
Senior Secured Credit Facilities Credit Agreement [Member] | London Interbank Offered Rate (LIBOR) [Member]
Line Of Credit Facility [Line Items]
Debt instrument basis spread on variable rate			2.50%
Loan and Security Agreement [Member]
Line Of Credit Facility [Line Items]
Debt instrument basis spread on variable rate	1.375%
Debt instrument payment frequency				quarterly
One time non-refundable facility fee	$ 25,000
Loan and Security Agreement [Member] | Maximum [Member]
Line Of Credit Facility [Line Items]
Percentage of capital stock pledge in foreign subsidiaries	65.00%
Loan and Security Agreement [Member] | London Interbank Offered Rate (LIBOR) [Member]
Line Of Credit Facility [Line Items]
Debt instrument basis spread on variable rate	2.00%
Loan and Security Agreement [Member] | Term Loan Agreement Year One and Two [Member]
Line Of Credit Facility [Line Items]
Debt instrument interest rate	1.25%
Loan and Security Agreement [Member] | Term Loan Agreement Year Three [Member]
Line Of Credit Facility [Line Items]
Debt instrument interest rate	1.88%
Loan and Security Agreement [Member] | Term Loan Agreement Year Four and Five [Member]
Line Of Credit Facility [Line Items]
Debt instrument interest rate	2.50%
Senior Secured Credit Facilities Credit Agreement [Member] | Term Loan Agreement [Member]
Line Of Credit Facility [Line Items]
Date the company entered into a Credit Agreement			May 9, 2016
Aggregate principal amount of term loan borrowed			$ 50,000
Debt instrument term loan			5 years
Western Alliance Bank [Member] | Loan and Security Agreement [Member]
Line Of Credit Facility [Line Items]
Aggregate principal amount of term loan borrowed	$ 25,000
Loan facility maturity date	Dec. 10, 2023

Loan Agreement and Prior Term_4

Loan Agreement and Prior Term Loan Agreement - Summary of Term Loan Agreement (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Less: current portion of loan agreement, net of $9 in unamortized debt issuance costs	$ (1,241)	$ (9,888)
Long-term portion of loan agreement, net of $36 in unamortized debt issuance costs	23,714	$ 22,339
Senior Secured Credit Facilities Credit Agreement [Member]
Debt Instrument [Line Items]
2019	1,250
2020	1,250
2021	1,875
2022	2,500
2023	18,125
Total principal on loan agreement	25,000
Unamortized debt issuance costs	(45)
Carrying amount of loan agreement	24,955
Less: current portion of loan agreement, net of $9 in unamortized debt issuance costs	(1,241)
Long-term portion of loan agreement, net of $36 in unamortized debt issuance costs	$ 23,714

Loan Agreement and Prior Term_5

Loan Agreement and Prior Term Loan Agreement - Summary of Term Loan Agreement (Parenthetical) (Detail) - Senior Secured Credit Facilities Credit Agreement [Member] $ in Thousands	Dec. 31, 2018USD ($)
Debt Instrument [Line Items]
Debt issuance costs, current, net	$ 9
Debt issuance costs, noncurrent, net	$ 36

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Detail)	Oct. 26, 2017USD ($)ft²	Dec. 31, 2018USD ($)	Dec. 31, 2017USD ($)	Dec. 31, 2016USD ($)
Commitments and Contingencies [Line Items]
Total rent expense under the Company's leases		$ 4,000,000	$ 4,500,000	$ 4,400,000
Charges, claims related to litigation		$ 0	$ 0
Third Amendment Newton Lease [Member]
Commitments and Contingencies [Line Items]
Lease extension date	Dec. 31, 2029
Operating lease term option to extend	5 years
One-time cash allowance	$ 3,300,000
Amendment effective date	Jan. 1, 2018
Base monthly rent	$ 300,000
Percentage increase in base rent	1.00%
Third Amendment Newton Lease [Member] | Maximum [Member]
Commitments and Contingencies [Line Items]
Lease agreement for office | ft²	110,000
Third Amendment Newton Lease [Member] | Minimum [Member]
Commitments and Contingencies [Line Items]
Lease agreement for office | ft²	74,000

Commitments and Contingencies_2

Commitments and Contingencies - Schedule of Future Minimum Lease Payments (Detail) $ in Thousands	Dec. 31, 2018USD ($)
Commitments And Contingencies Disclosure [Abstract]
2019	$ 4,180
2020	3,629
2021	3,721
2022	3,397
2023	3,397
Thereafter	21,267
Future minimum lease payments, Total	$ 39,591

Stock-Based Compensation - Addi

Stock-Based Compensation - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Jun. 16, 2017	Apr. 30, 2007
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Common stock outstanding under the plan	186,000	344,090
Expected dividend yield	0.00%	0.00%	0.00%
Intrinsic value of options exercised	$ 2,704	$ 900	$ 1,900
Cash received from exercise of options	1,005	942	4,192
Employee service share-based compensation, nonvested units, compensation cost not yet recognized	$ 17,900
Employee service share-based compensation, nonvested units, compensation cost not yet recognized, period for recognition	1 year 9 months 18 days
Restricted Stock Units [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Grant date fair value of restricted stock units vested	$ 7,000	$ 7,100	$ 7,400
Stock Option 2007 Plan [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Issuance of common stock incentives					2,911,667
Plan expiration period	2017-05
New awards granted	0
Common stock outstanding under the plan	513,500
Stock Option 2007 Plan [Member] | Restricted Stock Units [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Number of vested unit awards that remain outstanding	130,000
Stock Option 2017 Plan [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Issuance of common stock incentives				3,000,000
Common stock outstanding under the plan	999,761
Plan effective date	Jun. 16, 2017
Minimum [Member] | Stock Option 2007 Plan [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Period of grants vested	3 years
Minimum [Member] | Stock Option 2017 Plan [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Period of grants vested	3 years
Maximum [Member] | Stock Option 2007 Plan [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Period of grants vested	4 years
Period of grants expired	10 years
Annual increase in reserved common stock	2.00%
Maximum [Member] | Stock Option 2017 Plan [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Period of grants expired	10 years

Stock-Based Compensation - Fair

Stock-Based Compensation - Fair Values of Options Granted Estimated Using Weighted-Average Assumptions (Detail) - $ / shares	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Expected volatility	39.00%	43.00%	46.00%
Expected term	6 years	6 years	6 years
Risk-free interest rate	2.82%	1.87%	1.90%
Expected dividend yield	0.00%	0.00%	0.00%
Weighted-average grant date fair value per share	$ 11.94	$ 4.61	$ 3.91

Stock-Based Compensation - Summ

Stock-Based Compensation - Summary of Stock Option Activity under Company's Stock Option Plans (Detail) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Options outstanding, beginning balance	344,090
Options Outstanding, Granted	20,000
Options Outstanding, Exercised	(178,090)
Options outstanding, ending balance	186,000	344,090
Options Outstanding, Options exercisable	166,000
Options Outstanding, Options vested or expected to vest	184,108
Weighted-Average Exercise Price Per Share, Options outstanding, beginning balance	$ 6.41
Weighted-Average Exercise Price Per Share, Granted	28.42
Weighted-Average Exercise Price Per Share, Exercised	5.64
Weighted- Average Exercise Price Per Share, Options outstanding, ending balance	9.50	$ 6.41
Weighted- Average Exercise Price Per Share, Options exercisable	7.22
Weighted-Average Exercise Price Per Share, Options vested or expected to vest	$ 9.31
Weighted-Average Remaining Contractual Term in Years, Options outstanding	4 years 3 months 25 days
Weighted-Average Remaining Contractual Term in Years, Options exercisable	3 years 8 months 12 days
Weighted-Average Remaining Contractual Term in Years, Options vested or expected to vest	4 years 3 months 3 days
Aggregate Intrinsic Value, Exercised	$ 2,704	$ 900	$ 1,900
Aggregate Intrinsic Value, Options outstanding	828
Aggregate Intrinsic Value, Options exercisable	828
Aggregate Intrinsic Value, Options vested or expected to vest	$ 828

Stock-Based Compensation - Su_2

Stock-Based Compensation - Summary of Restricted Stock Unit Award Activity Under Company's Plans (Detail) - Restricted Stock [Member] $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2018USD ($)$ / sharesshares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares, Nonvested outstanding, beginning balance | shares	1,414,000
Shares, Granted | shares	542,202
Shares, Vested | shares	(752,941)
Shares, Forfeited | shares	(6,000)
Shares, Nonvested outstanding, ending balance | shares	1,197,261
Weighted-Average Grant Date Fair Value Per Share, Nonvested outstanding, beginning balance | $ / shares	$ 9.37
Weighted-Average Grant Date Fair Value Per Share, Granted | $ / shares	27.59
Weighted-Average Grant Date Fair Value Per Share, Vested | $ / shares	9.26
Weighted-Average Grant Date Fair Value Per Share, Forfeited | $ / shares	9.57
Weighted-Average Grant Date Fair Value Per Share, Nonvested outstanding, ending balance | $ / shares	$ 17.69
Aggregate Intrinsic Value, Nonvested outstanding | $	$ 14,619

Stockholders' Equity - Addition

Stockholders' Equity - Additional Information (Detail) - USD ($)	May 10, 2016	Dec. 31, 2018	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Nov. 07, 2018	Jun. 30, 2016
Schedule of Trading Securities and Other Trading Assets [Line Items]
Percentage of purchase of shares under tender offer as to common stock issued and outstanding	24.80%
Common stock repurchase, amount			$ 7,089,000	$ 8,085,000	$ 7,988,000
Repurchase of stock cost of repurchase of stock					$ 200
Tender Offers [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Repurchase of shares	8,000,000
Purchase price per share of common stock	$ 7.75
Common stock repurchased, shares	5,237,843
Treasury stock acquired, average purchase price per share	$ 7.75
Total cost of shares repurchased	$ 40,600,000
Common stock repurchase, amount	40,800,000
Repurchase of stock cost of repurchase of stock	$ 200,000
Period of expiration of tender offer			Jun. 8, 2016
Tender Offers [Member] | Jay Hoag [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Percentage of voting securities	5.00%
Tender Offers [Member] | TCV [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Common stock repurchased, shares	3,379,249
Tender Offers [Member] | Rogram LLC [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Common stock repurchased, shares	308,713
November 2018 Stock Repurchase Plan [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Common stock repurchased, shares		243,425
Treasury stock acquired, average purchase price per share		$ 12.82
Common stock repurchase, amount		$ 3,100,000
Common stock repurchase authorized amount						$ 25,000,000
June 2016 Repurchase Program [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Common stock repurchased, shares			211,729	749,437	980,329
Common stock repurchase, amount			$ 3,900,000	$ 8,100,000	$ 8,000,000
Common stock repurchase authorized amount							$ 20,000,000
Stock repurchase program expiration date			Jun. 30, 2017
2007 and 2017 Plans [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Common stock reserved		3,334,912	3,334,912

Income Taxes - Schedule of Inco

Income Taxes - Schedule of Income Before Provision for Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
U.S.	$ 11,917	$ 9,435	$ 3,351
Foreign	2,926	282	1,666
Income before provision for income taxes	$ 14,843	$ 9,717	$ 5,017

Income Taxes - Income Tax Provi

Income Taxes - Income Tax Provision (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Current:
Federal	$ 1,540	$ 1,543	$ 1,627
State	540	419	(569)
Foreign	(55)	57	415
Total current	2,025	2,019	1,473
Deferred:
Federal	(65)	598	1,592
State	(53)	382	(21)
Foreign	(19)	(85)	(446)
Total deferred	(137)	895	1,125
Provision for income taxes	$ 1,888	$ 2,914	$ 2,598

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($)	Dec. 31, 2017	Dec. 31, 2018	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Income Taxes [Line Items]
Corporate tax rate			21.00%	35.00%
Current tax expense in connection with transition tax	$ 45,000
Total transition tax on Federal tax return		$ 31,000
Valuation allowance	$ 352,000	33,000	$ 33,000	$ 352,000
Decrease in valuation allowance			320,000	$ 91,000	$ 85,000
NOL carryforwards		200,000	200,000
Unrecognized tax expenses		0	0			$ 184,000
Undistributed earnings, foreign subsidiaries		7,000,000	7,000,000
Foreign Country [Member]
Income Taxes [Line Items]
NOL carryforwards		$ 200,000	$ 200,000

Income Taxes - Difference by Ap

Income Taxes - Difference by Applying the Statutory Federal Income Tax Rate (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Provision computed at statutory rate	$ 3,116	$ 3,401	$ 1,757
Increase resulting from:
Difference in rates for foreign jurisdictions	93	37	(146)
Tax exempt interest income	(2)	(12)	(21)
Stock-based compensation	(1,708)	(304)	315
Other non-deductible expenses	252	(101)	67
Non-deductible officers compensation	198	447	738
State income tax provision	396	653	(380)
Losses not benefitted	23	4	1
Subsidiary earnings taxed in the US	(104)	127	253
True-up of prior year returns	(20)	(161)	11
Research and development credit	(279)	(801)
Tax Cuts and Jobs Act of 2017	(11)	(376)
Cancellation of Foreign Subsidiary Debt	(127)
Other	61		3
Provision for income taxes	$ 1,888	$ 2,914	$ 2,598

Income Taxes - Significant Comp

Income Taxes - Significant Components of the Company's Net Deferred Tax Assets and Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Deferred tax assets:
Net operating loss carryforwards	$ 33	$ 166
Contract liabilities		187
Accruals and allowances	1,253	972
Stock-based compensation	1,286	815
Deferred rent expense	1,267	1,327
Other	4	4
Gross deferred tax assets	3,843	3,471
Less valuation allowance	(33)	(352)
Total deferred tax assets	3,810	3,119
Deferred tax liabilities:
Intangible asset amortization	(2,603)	(2,036)
Depreciation	(1,814)	(1,823)
Total deferred tax liabilities	(4,417)	(3,859)
Net deferred tax liabilities	(607)	(740)
As reported:
Non-current deferred tax assets	55	98
Non-current deferred tax liabilities	$ (662)	$ (838)

Income Taxes - Reconciliation o

Income Taxes - Reconciliation of the Beginning and Ending Amounts of Unrecognized Tax Benefits (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2016USD ($)
Income Tax Disclosure [Abstract]
Balance at beginning of year	$ 184
Reductions due to amnesty and settlement	(188)
Gross increases related to positions taken in prior periods	$ 4

Segment Information - Additiona

Segment Information - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2018Segment
Segment Reporting [Abstract]
Number of operating segment	1

Segment Information - Net Sales

Segment Information - Net Sales to Unaffiliated Customers by Geographic Area (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales, Total	$ 121,333	$ 108,556	$ 106,625
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales, Total	89,340	77,982	79,535
United Kingdom [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales, Total	14,391	12,544	9,944
Other International [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales, Total	$ 17,602	$ 18,030	$ 17,146

Segment Information - Long-Live

Segment Information - Long-Lived Assets by Geographic Area (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets, Total	$ 105,437	$ 104,085
U.S. [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets, Total	101,051	98,683
International [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets, Total	$ 4,386	$ 5,402

401(k) Plan - Additional Inform

401(k) Plan - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Defined Contribution Plan Disclosure [Line Items]
Company's contribution to the plan, percentage	50.00%
Company's contribution to the plan, amount	$ 1,100,000	$ 900,000	$ 900,000
Company's matching contributions vesting annually	25.00%
Company's matching contributions vesting after four consecutive years of service	100.00%
Vesting period identified for vesting purpose	4 years
Maximum [Member]
Defined Contribution Plan Disclosure [Line Items]
Annual contribution by employer	$ 3,000	$ 2,000	$ 2,000