TechTarget (TTGT) 10-K 16 Mar 20 2019 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Feb. 29, 2020	Jun. 30, 2019
Cover [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2019
Document Fiscal Year Focus	2019
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		28,028,446
Entity Public Float			$ 384.1
Entity File Number	1-33472
Entity Tax Identification Number	04-3483216
Entity Address, Address Line One	275 Grove Street
Entity Address, City or Town	Newton
Entity Address, State or Province	MA
Entity Address, Postal Zip Code	02466
City Area Code	617
Local Phone Number	431-9200
Entity Interactive Data Current	Yes
Title of 12(b) Security	Common Stock, $0.001 Par Value
Security Exchange Name	NASDAQ
Entity Incorporation, State or Country Code	DE
Document Annual Report	true
Document Transition Report	false
Documents Incorporated by Reference	Part III of this Annual Report on Form 10-K incorporates by reference certain information from the registrant’s definitive proxy statement for the 2020 annual meeting of stockholders, which the registrant intends to file pursuant to Regulation 14A with the Securities and Exchange Commission not later than 120 days after the registrant’s fiscal year end of December 31, 2019.

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 52,487	$ 34,673
Short-term investments	5,012	500
Accounts receivable, net of allowance for doubtful accounts of $1,899 and $2,099, respectively	27,102	30,042
Prepaid taxes	1,017	1,834
Prepaid expenses and other current assets	1,813	3,069
Total current assets	87,431	70,118
Property and equipment, net	12,371	10,901
Goodwill	93,639	93,687
Intangible assets, net	710	849
Operating lease assets with right-of-use	26,385
Deferred tax assets	136	55
Other assets	936	853
Total assets	221,608	176,463
Current liabilities:
Accounts payable	2,036	1,871
Current operating lease liability	2,571
Current portion of term loan	1,241	1,241
Accrued expenses and other current liabilities	2,476	3,260
Accrued compensation expenses	3,679	2,432
Income taxes payable	65	176
Contract liabilities	4,335	5,573
Total current liabilities	16,403	14,553
Non-current operating lease liability	28,170
Long-term portion of term loan	22,473	23,714
Deferred rent		4,949
Deferred tax liabilities	1,611	662
Total liabilities	68,657	43,878
Commitments and contingencies (See Note 10)
Stockholders’ equity:
Preferred stock, $0.001 par value; 5,000,000 shares authorized; no shares issued or outstanding
Common stock, $0.001 par value; 100,000,000 shares authorized; 54,903,824 and 54,117,325 shares issued, respectively; 28,142,519 and 27,791,045 shares outstanding, respectively	55	54
Treasury stock, at cost; 26,761,305 and 26,326,280 shares, respectively	(184,972)	(177,905)
Additional paid-in capital	317,675	307,014
Accumulated other comprehensive (loss)	(319)	(215)
Retained earnings	20,512	3,637
Total stockholders’ equity	152,951	132,585
Total liabilities and stockholders’ equity	$ 221,608	$ 176,463

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Statement Of Financial Position [Abstract]
Allowance for doubtful accounts, accounts receivable	$ 1,899	$ 2,099
Preferred stock, par value	$ 0.001	$ 0.001
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	54,903,824	54,117,325
Common stock, shares outstanding	28,142,519	27,791,045
Treasury stock, shares	26,761,305	26,326,280

Consolidated Statements of Inco

Consolidated Statements of Income and Comprehensive Income - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Statement [Abstract]
Revenues		$ 133,957	$ 121,333	$ 108,556
Cost of revenues	[1]	31,858	28,959	28,336
Gross profit		102,099	92,374	80,220
Operating expenses:
Selling and marketing	[1]	52,462	47,779	44,747
Product development	[1]	8,107	8,869	8,215
General and administrative	[1]	14,088	14,557	12,212
Depreciation and amortization, excluding depreciation of $296, $0, and $0 included in cost of revenues		4,703	4,548	4,636
Total operating expenses		79,360	75,753	69,810
Operating income		22,739	16,621	10,410
Interest (expense) income and other (expense) income, net		(691)	(1,778)	(693)
Income before provision for income taxes		22,048	14,843	9,717
Provision for income taxes		5,173	1,888	2,914
Net income		16,875	12,955	6,803
Other comprehensive (loss) income, net of tax:
Unrealized gain on investments (net of tax provision of $0,$(11) and $(7)			15	13
Foreign currency translation adjustments		(104)	(295)	300
Other comprehensive (loss) income		(104)	(280)	313
Comprehensive income		$ 16,771	$ 12,675	$ 7,116
Net income per common share:
Basic		$ 0.61	$ 0.47	$ 0.25
Diluted		$ 0.60	$ 0.45	$ 0.24
Weighted average common shares outstanding:
Basic		27,873,745	27,738,178	27,550,044
Diluted		28,311,687	28,652,814	28,271,384
[1]	Amounts include stock-based compensation expense as follows: Cost of revenues $210 $159 $43 Selling and marketing $8,936 $4,899 $4,120 Product development $408 $200 $112 General and administrative $4,663 $3,855 $2,637

Consolidated Statements of In_2

Consolidated Statements of Income and Comprehensive Income (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Depreciation included in cost of revenues	$ 296	$ 0	$ 0
Unrealized gain (loss) on investments, tax effect	0	(11)	(7)
Cost of Revenues [Member]
Allocated stock-based compensation expense	210	159	43
Selling and Marketing [Member]
Allocated stock-based compensation expense	8,936	4,899	4,120
Product Development [Member]
Allocated stock-based compensation expense	408	200	112
General and Administrative [Member]
Allocated stock-based compensation expense	$ 4,663	$ 3,855	$ 2,637

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) Gain [Member]	Retained Earnings (Accumulated Deficit) [Member]
Beginning balance at Dec. 31, 2016	$ 117,563	$ 52	$ (162,731)	$ 296,853	$ (248)	$ (16,363)
Beginning 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/stock buyback	(8,085)		$ (8,085)
Purchase of common stock through stock repurchase program/stock buyback, 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 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/stock buyback	(7,089)		$ (7,089)
Purchase of common stock through stock repurchase program/stock buyback, 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 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
Issuance of common stock from stock options and restricted stock units	386	$ 1		385
Issuance of common stock from stock options and restricted stock units, shares		763,323
Purchase of common stock through stock repurchase program/stock buyback	(7,067)		$ (7,067)
Purchase of common stock through stock repurchase program/stock buyback, shares			411,849
Stock-based compensation expense	13,066			13,066
Tax withholdings related to net share settlement of RSU’s	(2,790)			(2,790)
Tax withholdings related to net share settlement of RSU’s, shares		23,176	23,176
Unrealized gain (loss) on foreign currency translation	(104)				(104)
Net income	16,875					16,875
Ending balance at Dec. 31, 2019	$ 152,951	$ 55	$ (184,972)	$ 317,675	$ (319)	$ 20,512
Ending balance, shares at Dec. 31, 2019		54,903,824	26,761,305

Consolidated Statements of St_2

Consolidated Statements of Stockholders' Equity (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Tax provision (benefit) on unrealized gain (loss) on investments	$ (11)	$ (7)
Accumulated Other Comprehensive (Loss) Gain [Member]
Tax provision (benefit) on unrealized gain (loss) on investments	$ 11	$ 7

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Operating Activities:
Net income	$ 16,875	$ 12,955	$ 6,803
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	4,999	4,548	4,636
Provision for bad debt	339	986	806
Amortization of investment premiums		73	262
Stock-based compensation	14,217	9,113	6,912
Amortization of debt issuance costs	9	298	109
Deferred tax provision	(1,097)	(137)	895
Changes in operating assets and liabilities:
Accounts receivable	2,601	(1,548)	(7,855)
Operating lease assets (ROU)	2,736
Prepaid expenses and other current assets	1,011	(150)	(1,105)
Other assets	(74)	11	45
Accounts payable	164	332	(810)
Income taxes payable	2,524	(398)	2,744
Accrued expenses and other current liabilities	(792)	(212)	(157)
Accrued compensation expenses	94	336	670
Operating lease liability (ROU)	(2,920)
Contract liabilities	(1,237)	(2,025)	1,519
Other liabilities		(305)	3,175
Net cash provided by operating activities	39,449	23,877	18,649
Investing activities:
Purchases of property and equipment, and other capitalized assets	(6,335)	(5,538)	(4,137)
Purchases of investments	(5,012)		(500)
Proceeds from sales and maturities of investments	500	7,600	10,900
Acquisitions of business net		(370)
Net cash (used in) provided by investing activities	(10,847)	1,692	6,263
Financing activities:
Tax withholdings related to net share settlements	(2,790)	(3,150)	(3,940)
Purchase of treasury shares and related costs	(7,067)	(7,089)	(8,085)
Registration and other fees			(3)
Proceeds from exercise of stock options	386	1,005	942
Term loan proceeds		25,000
Debt issuance costs		(44)	(50)
Loan Agreement and Term loan principal payment	(1,250)	(32,500)	(6,250)
Net cash used in financing activities	(10,721)	(16,778)	(17,386)
Effect of exchange rate changes on cash and cash equivalents	(67)	(84)	(45)
Net increase in cash and cash equivalents	17,814	8,707	7,481
Cash and cash equivalents at beginning of period	34,673	25,966	18,485
Cash and cash equivalents at end of period	52,487	34,673	25,966
Supplemental disclosure of cash flow information:
Cash (received) paid for taxes, net	$ 3,581	$ 2,625	(43)
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, 2019
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 B2B technology companies 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, 2019
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 The Company historically presented it revenue broken out into online and events, the events product line was phased out in 2017. Immaterial 2017 events revenue was reclassed for presentation purposes into the current revenue presentation on the Consolidated Statements of Income. This reclassification had no effect on total revenue, operating expenses or net income. 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 . The Company generates revenues from the sale of targeted marketing and advertising campaigns, which it obtains via its network of websites and delivers through its various data analytics 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. Revenue Recognition under Accounting Standards Codification (“ASC”) 605, Revenue Recognition During 2017, the Company recognized revenue under ASC 605. The Company generates its revenues from the sale of targeted marketing and advertising campaigns, which are delivered via its data analytics solutions. 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. Revenue Recognition under ASC 606, Revenue from Contacts with Customers (“ASC 606”) During 2019 and 2018, the Company recognized revenue under ASC 606. The Company generates its revenues from the sale of targeted marketing and advertising campaigns The Company’s offerings consist of: IT Deal Alert: IT Deal Alert provides a suite of products that leverages detailed purchase intent data that the Company 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 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 its customers’ specifications through its Custom Content team (“custom content”). Revenue from demand and brand solutions is primarily recognized when the transfer of control occurs. Certain of the contracts within demand and brand 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 is 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. 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. 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 were impaired. The Company did not have any intangible assets with indefinite lives as of December 31, 2019 or 2018. 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, 2019, 2018, and 2017. Balance at Beginning of Year Provision Acquired in Business Combinations Write-offs, Net of Recoveries Balance at End of Year Year ended December 31, 2017 $ 1,961 $ 806 — $ (984 ) $ 1,783 Year ended December 31, 2018 $ 1,783 $ 986 — $ (670 ) $ 2,099 Year ended December 31, 2019 $ 2,099 $ 339 — $ (539 ) $ 1,899 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, 2019 2018 Furniture and fixtures $ 1,267 $ 1,266 Computer equipment and software 4,461 4,201 Leasehold improvements 3,779 3,844 Internal-use software and website development costs 28,546 29,692 38,053 39,003 Less: accumulated depreciation and amortization (25,682 ) (28,102 ) $ 12,371 $ 10,901 Depreciation expense was $4.9 million, $4.4 million, and $4.5 million for the years ended December 31, 2019, 2018, and 2017, 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 $7.3 million, $1.5 million, and $0.6 million of fully depreciated assets that were no longer in service during 2019, 2018, and 2017, respectively. Depreciation expense is classified as a component of operating expense in the Company’s results of operations with the exception of certain depreciation expense which is classified as a component of cost of goods sold. 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 $5.1 million, $3.0 million, and $2.9 million for the years ended December 31, 2019, 2018, and 2017, 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 management to be probable in the Company’s accounts receivable. At December 31, 2019 and 2018, no customer represented 10% of total accounts receivable. No single customer accounted for 10% or more of total revenues in the years ended December 31, 2019, 2018, or 2017. 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, 2019, 2018, or 2017. 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 income (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, 2019 2018 2017 Numerator: Net income $ 16,875 $ 12,955 $ 6,803 Denominator: Basic: Weighted average shares of common stock and vested, undelivered restricted stock units outstanding 27,873,745 27,738,178 27,550,044 Diluted: Weighted average shares of common stock and vested, undelivered restricted stock units outstanding 27,873,745 27,678,959 27,550,044 Effect of potentially dilutive shares 437,942 973,855 721,340 Total weighted average shares of common stock and vested, undelivered restricted stock units outstanding and potentially dilutive shares 28,311,687 28,652,814 28,271,384 Calculation of Net Income Per Common Share: Basic: Net income applicable to common stockholders $ 16,875 $ 12,955 $ 6,803 Weighted average shares of stock outstanding 27,873,745 27,738,178 27,550,044 Net income per common share $ 0.61 $ 0.47 $ 0.25 Diluted: Net income applicable to common stockholders $ 16,875 $ 12,955 $ 6,803 Weighted average shares of stock outstanding 28,311,687 28,652,814 28,271,384 Net income per common share(1) $ 0.60 $ 0.45 $ 0.24 (1) In calculating diluted earnings per share, 0.3 million, 0.5 million, and 0.7 million shares related to outstanding stock options and unvested, undelivered restricted stock units were excluded for the years ended December 31, 2019, 2018, and 2017, respectively, because they were anti-dilutive. Recent Accounting Pronouncements Recently Adopted Accounting Guidance In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842) (“ASU 2016-02”). ASU 2016-02 establishes a right-of-use (“ROU”) model that requires a lessee to record a ROU asset and a lease liability on the balance sheet for all leases with terms longer than twelve months. Leases will be classified as either finance or operating, with classification affecting the pattern of expense recognition in the Consolidated Statements of Income and Comprehensive Income. ASU 2016-02 is effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. A modified retrospective transition approach is required for lessees, capital and operating leases, existing at, or entered into after, the beginning of the earliest comparative period presented in the financial statements, with certain practical expedients available. The Company adopted ASU 2016-02 in the first quarter of 2019 using the modified retrospective approach, and elected the package of practical expedients permitted under the transition guidance. Results and disclosure requirements for reporting periods beginning after January 1, 2019 are presented under Topic 842, while prior period amounts have not been adjusted and continue to be reported in accordance with our historical accounting under Topic 840. We elected the package of practical expedients permitted under the transition guidance, which allowed us to carryforward our historical lease classification, our assessment on whether a contract was or contains a lease, and our initial direct costs for any leases that existed prior to January 1, 2019. We also elected to combine our lease and non-lease components and to keep leases with an initial term of 12 months or less off the balance sheet and recognize the associated lease payments in the consolidated statements of income on a straight-line basis over the lease term. The Company recorded operating lease assets with right-of-use of $27.5 million and $2.9 million current operating lease liability and $29.2 million non-current operating lease liability as of January 1, 2019, of which $4.9 million and $0.3 million were reclassified from deferred rent and prepaid rent, respectively (see Note 10). 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 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. We will adopt the new standard effective January 1, 2020 and do not expect the adoption of this guidance to have a material impact on our consolidated financial statements. In August 2018, the FASB issued ASU No. 2018-15, Intangibles-Goodwill and Other-Internal-Use Software (Subtopic 350-40): Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement that is a Service Contract, which requires implementation costs incurred by customers in cloud computing arrangements (i.e., hosting arrangements) to be capitalized under the same premises of authoritative guidance for internal-use software, and deferred over the non-cancellable term of the cloud computing arrangements plus any optional renewal periods that are reasonably certain to be exercised by the customer or for which the exercise is controlled by the service provider. ASU 2018-15 is effective for fiscal years beginning after December 15, 2019, and interim periods within those fiscal years, with early adoption permitted. We will adopt the new standard effective January 1, 2020 and do not expect the adoption of this guidance to have a material impact on our consolidated financial statements. In June 2016, the FASB issued ASU 2016-03, “Measurement of Credit Losses on Financial Instruments,” (ASU 2016-03) which amends ASC 326 “Financial Instruments—Credit Losses” which introduces a new methodology for accounting for credit losses on financial instruments. The guidance establishes a new forward looking "expected loss model" that requires entities to estimate current expected credit losses on accounts receivable and financial instruments by using all practical and relevant information. We will adopt the new standard effective January 1, 2020 and do not expect the adoption of this guidance to have a material impact on our consolidated financial statements. In August 2018, the FASB issued Accounting Standard Update No. 2018-13, “Changes to Disclosure Requirements for Fair Value Measurements” (Topic 820) (ASU 2018-13), which improved the effectiveness of disclosure requirements for recurring and nonrecurring fair value measurements. The standard removes, modifies, and adds certain disclosure requirements. We will adopt the new standard effective January 1, 2020 and do not expect the adoption of this guidance to have a material impact on our consolidated financial statements. In December 2019, the FASB issued Accounting Standard Update No. 2019-12, Income Taxes (Topic 740): “Simplifying the Accounting for Income Taxes” (ASU 2019-12), which simplifies the accounting for income taxes. This guidance will be effective for us in the first quarter of 2021 on a prospective basis, and early adoption is permitted. We are currently evaluating the impact of the new guidance on our consolidated financial statements.

Revenue

Revenue	12 Months Ended
	Dec. 31, 2019
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 and economic risk. International revenue consists of international geo-targeted campaigns, which are campaigns targeted at an audience of members outside of North America. Years Ended December 31, 2019 2018 2017 North America $ 89,582 $ 82,660 $ 73,349 International 44,375 38,673 35,207 Total Revenue $ 133,957 $ 121,333 $ 108,556 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 were $4.3 million and $5.6 million at December 31, 2019 and December 31, 2018, respectively. The Company’s adoption of ASC 606 reduced the Company’s accounts receivable and 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 $2.4 million and $3.5 million at December 31, 2019 and December 31, 2018, respectively. 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 Deferral of revenue 7,666 Recognition of previously unearned revenue (8,904 ) Balance at December 31,2019 $ 4,335 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 financing to the customer. • Costs to Obtain 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, 2019
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, 2019 Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Assets: Short-term investments(2) $ 5,012 $ — $ 5,012 $ — Total assets $ 5,012 $ — $ 5,012 $ — 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 — Total assets $ 15,570 $ 15,070 $ 500 $ — ( 1 ) Included in cash and cash equivalents on the accompanying consolidated balance sheets; valued at quoted market prices in active markets. (2) Short-term investments consist of municipal bonds, corporate bonds, bond funds, 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, 2019
Business Combinations [Abstract]
Acquisition	5. Acquisition 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, 2019
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, 2019 2018 Cash $ 52,487 $ 19,603 Money market funds — 15,070 Total cash and cash equivalents $ 52,487 $ 34,673 The Company’s short-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 zero, $15 and $17 as of December 31, 2019, 2018, and 2017, 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 2019, 2018, or 2017. Short-term and long-term investments consisted of the following: December 31, 2019 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Estimated Fair Value Short-term investments: Bond funds $ 5,012 $ — $ — $ 5,012 Total short-term investments $ 5,012 $ — $ — $ 5,012 December 31, 2018 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Estimated Fair Value Short-term investments: U.S. Treasury securities $ 500 $ — $ — $ 500 Total short-term investments $ 500 $ — $ — $ 500 The Company had no securities in an unrealized loss position at December 31, 2019 and 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, 2019
Goodwill And Intangible Assets Disclosure [Abstract]
Goodwill	7. Goodwill The changes in the carrying amount of goodwill are as follows: As of December 31, 2019 2018 Balance as of beginning of year $ 93,687 $ 93,793 Effect of exchange rate changes (48 ) (202 ) Additions — 96 Balance as of end of year $ 93,639 $ 93,687

Intangible Assets

Intangible Assets	12 Months Ended
	Dec. 31, 2019
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, 2019 Estimated Useful Lives (Years) Gross Carrying Amount Accumulated Amortization Net Customer, affiliate and advertiser relationships 5-17 $ 6,520 $ (6,290 ) $ 230 Developed websites, technology and patents 10 1,476 (1,026 ) 450 Trademark, trade name and domain name 5-8 1,792 (1,763 ) 29 Proprietary user information database and internet traffic 5 1,122 (1,122 ) — Non-Compete agreement 1.5 10 (9 ) 1 Total intangible assets $ 10,920 $ (10,210 ) $ 710 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 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 4.97 years. Amortization expense was $0.1 million, $0.1 million and $0.2 million for the years ended December 31, 2019, 2018, and 2017, 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 did not write off any intangible assets in 2019. The Company wrote off $0.7 million fully amortized intangible assets in 2018. The Company did not write off any amortized intangible assets in 2017. The Company expects amortization expense of intangible assets to be as follows: Years Ending December 31: Amortization Expense 2020 $ 112 2021 127 2022 156 2023 37 Thereafter 278 $ 710

Loan Agreement and Prior Term L

Loan Agreement and Prior Term Loan Agreement	12 Months Ended
	Dec. 31, 2019
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”). 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%. On December 24, 2018, the Company entered into a Loan and Security Agreement (the “Loan Agreement”) with Western Alliance Bank as the lender. The Loan Agreement provides for a $25 million term loan facility with a maturity date of December 10, 2023 and replaced the Term Loan. 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). Borrowings under 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. Borrowings under the Loan Agreement 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 borrowings under 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. Interest expense under the 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, 2019 related to the Loan Agreement are as follows: Years Ending December 31: 2020 $ 1,250 2021 1,875 2022 2,500 2023 18,125 Total principal on loan agreement 23,750 Unamortized debt issuance costs (36 ) Carrying amount of loan agreement 23,714 Less: current portion of loan agreement, net of $9 in unamortized debt issuance costs (1,241 ) Long-term portion of loan agreement, net of $27 in unamortized debt issuance costs $ 22,473 At December 31, 2019, the Company was in compliance with all covenants under the Loan Agreement.

Leases and Contingencies

Leases and Contingencies	12 Months Ended
	Dec. 31, 2019
Lessee Disclosure [Abstract]
Leases and Contingencies	10. Leases and Contingencies Leases On January 1, 2019, the Company adopted Topic 842 using the modified retrospective approach. The Company recorded operating lease assets (right -of-use assets) of $27.5 million and operating lease liabilities of $32.1 million. There was no impact to retained earnings upon adoption of Topic 842. 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 and 2017, respectively. We have various non-cancelable lease agreements for certain of our offices with original lease periods expiring between 2019 and 2029. Our lease terms may include options to extend or terminate the lease at our option. Leases with renewal option allow the Company to extend the lease term typically between 1 and 5 years. When determining the lease term, renewal options reasonably certain of being exercised are included in the lease term. When determining if a renewal option is reasonably certain of being exercised, the Company considers several economic factors, including but not limited to, the significance of leasehold improvements incurred on the property, whether the asset is difficult to replace, underlying contractual obligations, or specific characteristics unique to that particular lease that would make it reasonably certain that the Company would exercise such option. Renewal and termination options were generally not included in the lease term for the Company's existing operating leases. Certain of the arrangements have discounted rent periods or escalating rent payment provisions. Leases with an initial term of twelve months or less are not recorded on the consolidated balance sheets. We recognize rent expense on a straight-line basis over the lease term. As of December 31, 2019, operating lease assets were $26.4 million and operating lease liabilities were $30.7 million. The maturity of the Company’s operating lease liabilities as of December 31, 2019 were as follows: Minimum Lease Years Ending December 31: Payments 2020 $ 3,746 2021 4,180 2022 3,781 2023 3,696 2024 3,725 Thereafter 17,760 Total future minimum lease payments $ 36,888 Less imputed interest 6,147 Total operating lease liabilities $ 30,741 Included in the condensed consolidated balance sheet: Current operating lease liabilities $ 2,571 Non-current operating lease liabilities 28,170 Total operating lease liabilities $ 30,741 The total lease cost is comprised of the following amounts (in thousands): Twelve Months Ended December 31,2019 Operating lease expense $ 3,865 Short-term lease expense 117 Total lease expense $ 3,982 The following summarizes additional information related to operating leases: As of December 31,2019 Weighted-average years remaining lease term — operating leases 5.4 Weighted-average discount rate — operating leases 4 % If the rate implicit in the lease is not readily determinable, the Company uses its incremental borrowing rate as the discount rate. The Company uses its best judgment when determining the incremental borrowing rate, which is the rate of interest that the Company would have to pay to borrow on a collateralized basis over a similar term to the lease payments in a similar currency. Supplemental Information for Comparative Periods 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, and $4.5 million for the years ended December 31, 2018 and 2017, respectively. As previously disclosed in our 2018 Annual Report on Form 10-K and under the previous lease accounting standard, ASC 840, Leases, the total commitment for non-cancelable operating leases was $39.6 million as of December 31, 2018: 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, 2019 and 2018, 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, 2019
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 107,500 shares of common stock, including vested and outstanding restricted stock unit awards that under the 2007 Plan as of December 31, 2019. 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 1,363,630 shares of common stock that are subject to outstanding stock grants under the 2017 Plan as of December 31, 2019. 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, 2019 2018 2017 Expected volatility 39 % 39 % 43 % Expected term 6 years 6 years 6 years Risk-free interest rate 2.15 % 2.82 % 1.87 % Expected dividend yield — % — % — % Weighted-average grant date fair value per share $ 8.08 $ 11.94 $ 4.61 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, 2019 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, 2018 186,000 $ 9.50 Granted 22,500 20.32 Exercised (68,500 ) 5.63 $ 1,331 Forfeited — — Canceled — — Options outstanding at December 31, 2019 140,000 $ 13.14 5.92 $ 1,861 Options exercisable at December 31, 2019 117,500 $ 11.76 5.25 $ 1,731 Options vested or expected to vest at December 31, 2019 139,035 $ 13.09 5.90 $ 1,856 During the years ended December 31, 2019, 2018, and 2017, 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 $1.3 million, $2.7 million, and $0.9 million, respectively, and the total amount of cash received by the Company from exercise of these options was $0.4 million, $1.0 million, and $0.9 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, 2019 is presented below: Shares Weighted- Average Grant Date Fair Value Per Share Aggregate Intrinsic Value Nonvested outstanding at December 31, 2018 1,197,261 $ 17.69 Granted 846,733 22.09 Vested (739,864 ) 15.42 Forfeited (3,000 ) 28.05 Nonvested outstanding at December 31, 2019 1,301,130 $ 21.52 $ 34,742 The total grant-date fair value of restricted stock unit awards that vested during the years ended December 31, 2019, 2018, and 2017 was $11.4 million, $7.0 million, and $7.1 million, respectively. As of December 31, 2019, there was $23.7 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 2 years.

Stockholders' Equity

Stockholders' Equity	12 Months Ended
	Dec. 31, 2019
Equity [Abstract]
Stockholders' Equity	12. Stockholders’ Equity Common Stock Repurchase Programs On November 7, 2018 the Company announced a program (the “November 2018 Stock Repurchase Program”) 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 411,849 and 243,425 shares at an aggregate purchase price of $7.1 million and $3.1 million and an average share price of $17.14 and $12.82 during the year ended December 31, 2019 and 2018, respectively under the November 2018 Stock Repurchase Program. In June 2016, the Company announced that the Board had authorized a $20.0 million stock repurchase program (the “June 2016 Repurchase Program”). Pursuant to the June 2016 Repurchase Program, the Company repurchased 211,729 and 749,437 shares of common stock for an aggregate purchase price of $3.9 million, and $8.1 million in, 2018 and 2017 respectively . 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, 2019, the Company has reserved 2,507,272 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, 2019
Income Tax Disclosure [Abstract]
Income Taxes	13. Income Taxes Income before provision for income taxes was as follows: Years Ended December 31, 2019 2018 2017 United States $ 20,709 $ 11,917 $ 9,435 Foreign 1,339 2,926 282 Income before income taxes $ 22,048 $ 14,843 $ 9,717 The income tax provision consisted of the following: Years Ended December 31, 2019 2018 2017 Current: Federal $ 3,415 $ 1,540 $ 1,543 State 538 540 419 Foreign 347 (55 ) 57 Total current 4,300 2,025 2,019 Deferred: Federal 742 (65 ) 598 State 242 (53 ) 382 Foreign (111 ) (19 ) (85 ) Total deferred 873 (137 ) 895 $ 5,173 $ 1,888 $ 2,914 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 decreased 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. The Company recognized $0.4 million of current tax benefit related to revaluation of deferred tax balances as a result of the change in tax rate, and $45 thousand of current tax expense related to the Transition Tax, for a net current tax benefit of $0.4 million. 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 thousand 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. The income tax provision for the years ended December 31, 2019, 2018 and 2017 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, 2019 2018 2017 Provision computed at statutory rate $ 4,630 $ 3,116 $ 3,401 Increase resulting from: Difference in rates for foreign jurisdictions 18 93 37 Tax exempt interest income — (2 ) (12 ) Stock-based compensation (425 ) (1,708 ) (304 ) Other non-deductible expenses 243 252 (101 ) Non-deductible officers compensation 482 198 447 State income tax provision 615 396 653 Losses not benefitted — 23 4 Subsidiary earnings taxed in the US (11 ) (104 ) 127 True-up of prior year returns 1 (20 ) (161 ) Research and development credit (387 ) (279 ) (801 ) Tax Cuts and Jobs Act of 2017 — (11 ) (376 ) Cancellation of Foreign Subsidiary Debt — (127 ) — Other 7 61 — Provision for income taxes $ 5,173 $ 1,888 $ 2,914 Significant components of the Company’s net deferred tax assets and liabilities are as follows: As of December 31, 2019 2018 Deferred tax assets: Net operating loss carryforwards $ 99 $ 33 Contract liabilities — — Right of use operating lease liability 7,769 — Accruals and allowances 1,452 1,253 Stock-based compensation 1,397 1,286 Deferred rent expense — 1,267 Other 4 4 Gross deferred tax assets 10,721 3,843 Less valuation allowance (33 ) (33 ) Total deferred tax assets 10,688 3,810 Deferred tax liabilities: Intangible asset amortization (3,204 ) (2,603 ) Right of use operating lease asset (6,650 ) — Depreciation (2,309 ) (1,814 ) Total deferred tax liabilities (12,163 ) (4,417 ) Net deferred tax liabilities $ (1,475 ) $ (607 ) As reported: Non-current deferred tax assets $ 136 $ 55 Non-current deferred tax liabilities $ (1,611 ) $ (662 ) In evaluating the ability to realize the net deferred tax asset, 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 partially offset by a valuation allowance. The valuation allowance of $33 thousand at both December 31, 2019 and 2018 , relates primarily to Hong Kong foreign NOLs of $0.2 million. The valuation allowance remained the same in 2019 and decreased by, $0.3 million, and $0.1 million during the years ended December 31, 2018, and 2017, 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, 2019, the Company had a NOL carryforward of approximately $0.6 million, which may be used to offset future taxable income in foreign jurisdictions indefinitely. The Company had no unrecognized tax benefits at December 31, 2019. It is not expected that the amount of unrecognized tax benefits will change significantly within the next twelve months. 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, 2019, the Company also had foreign NOL carryforwards of $0.6 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 partially offset by a $0.2 million valuation allowance related to Hong Kong. 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 $8.3 million as of December 31, 2019. 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, 2019
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 by campaign target area were as follows (1): Years Ended December 31, 2019 2018 2017 North America $ 89,582 $ 82,660 $ 73,349 International 44,375 38,673 35,207 Total Revenue $ 133,957 $ 121,333 $ 108,556 (1) Net sales to customers by campaign target area is based on the geo-targeted (target audience) location of the campaign. Net sales to unaffiliated customers by geographic area were as follows (2): Years Ended December 31, 2019 2018 2017 United States $ 99,669 $ 89,340 $ 77,982 United Kingdom 14,104 14,391 12,544 Other International 20,184 17,602 18,030 Total $ 133,957 $ 121,333 $ 108,556 (2) Net sales to unaffiliated customers by geographic area is based on the customers’ current billing addresses and does not consider the geo-targeted (target audience) location of the campaign. Long-lived assets by geographic area were as follows: Years Ended December 31, 2019 2018 United States $ 102,572 $ 101,051 International 4,148 4,386 Total $ 106,720 $ 105,437 Long-lived assets are comprised of property and equipment, net; goodwill; and intangible assets, net.

401(k) Plan

401(k) Plan	12 Months Ended
	Dec. 31, 2019
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 thousand in 2019 and 2018 and $2 thousand for 2017. The Company contributed $1.2 million, $1.1 million and $0.9 million to the Plan for each of the years ended December 31, 2019, 2018, and 2017 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.

Subsequent Events

Subsequent Events	12 Months Ended
	Dec. 31, 2019
Subsequent Events [Abstract]
Subsequent Events	16. Subsequent Events On February 18, 2020, the Company acquired substantially all of the operating assets of Data Science Central LLC, which is a niche digital publishing and media company focused on data science and business analytics for $5.5 million, plus, contingent consideration of $2.0 million which will become payable upon the achievement of certain revenue objectives during the next two years. The purchase price was paid in cash by the Company.

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2019
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 The Company historically presented it revenue broken out into online and events, the events product line was phased out in 2017. Immaterial 2017 events revenue was reclassed for presentation purposes into the current revenue presentation on the Consolidated Statements of Income. This reclassification had no effect on total revenue, operating expenses or net income.
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 . The Company generates revenues from the sale of targeted marketing and advertising campaigns, which it obtains via its network of websites and delivers through its various data analytics 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. Revenue Recognition under Accounting Standards Codification (“ASC”) 605, Revenue Recognition During 2017, the Company recognized revenue under ASC 605. The Company generates its revenues from the sale of targeted marketing and advertising campaigns, which are delivered via its data analytics solutions. 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. Revenue Recognition under ASC 606, Revenue from Contacts with Customers (“ASC 606”) During 2019 and 2018, the Company recognized revenue under ASC 606. The Company generates its revenues from the sale of targeted marketing and advertising campaigns The Company’s offerings consist of: IT Deal Alert: IT Deal Alert provides a suite of products that leverages detailed purchase intent data that the Company 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 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 its customers’ specifications through its Custom Content team (“custom content”). Revenue from demand and brand solutions is primarily recognized when the transfer of control occurs. Certain of the contracts within demand and brand 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 is 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. 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.
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 were impaired. The Company did not have any intangible assets with indefinite lives as of December 31, 2019 or 2018.
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, 2019, 2018, and 2017. Balance at Beginning of Year Provision Acquired in Business Combinations Write-offs, Net of Recoveries Balance at End of Year Year ended December 31, 2017 $ 1,961 $ 806 — $ (984 ) $ 1,783 Year ended December 31, 2018 $ 1,783 $ 986 — $ (670 ) $ 2,099 Year ended December 31, 2019 $ 2,099 $ 339 — $ (539 ) $ 1,899
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, 2019 2018 Furniture and fixtures $ 1,267 $ 1,266 Computer equipment and software 4,461 4,201 Leasehold improvements 3,779 3,844 Internal-use software and website development costs 28,546 29,692 38,053 39,003 Less: accumulated depreciation and amortization (25,682 ) (28,102 ) $ 12,371 $ 10,901 Depreciation expense was $4.9 million, $4.4 million, and $4.5 million for the years ended December 31, 2019, 2018, and 2017, 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 $7.3 million, $1.5 million, and $0.6 million of fully depreciated assets that were no longer in service during 2019, 2018, and 2017, respectively. Depreciation expense is classified as a component of operating expense in the Company’s results of operations with the exception of certain depreciation expense which is classified as a component of cost of goods sold.
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 $5.1 million, $3.0 million, and $2.9 million for the years ended December 31, 2019, 2018, and 2017, 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 management to be probable in the Company’s accounts receivable. At December 31, 2019 and 2018, no customer represented 10% of total accounts receivable. No single customer accounted for 10% or more of total revenues in the years ended December 31, 2019, 2018, or 2017.
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, 2019, 2018, or 2017.
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 income (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, 2019 2018 2017 Numerator: Net income $ 16,875 $ 12,955 $ 6,803 Denominator: Basic: Weighted average shares of common stock and vested, undelivered restricted stock units outstanding 27,873,745 27,738,178 27,550,044 Diluted: Weighted average shares of common stock and vested, undelivered restricted stock units outstanding 27,873,745 27,678,959 27,550,044 Effect of potentially dilutive shares 437,942 973,855 721,340 Total weighted average shares of common stock and vested, undelivered restricted stock units outstanding and potentially dilutive shares 28,311,687 28,652,814 28,271,384 Calculation of Net Income Per Common Share: Basic: Net income applicable to common stockholders $ 16,875 $ 12,955 $ 6,803 Weighted average shares of stock outstanding 27,873,745 27,738,178 27,550,044 Net income per common share $ 0.61 $ 0.47 $ 0.25 Diluted: Net income applicable to common stockholders $ 16,875 $ 12,955 $ 6,803 Weighted average shares of stock outstanding 28,311,687 28,652,814 28,271,384 Net income per common share(1) $ 0.60 $ 0.45 $ 0.24 (1) In calculating diluted earnings per share, 0.3 million, 0.5 million, and 0.7 million shares related to outstanding stock options and unvested, undelivered restricted stock units were excluded for the years ended December 31, 2019, 2018, and 2017, respectively, because they were anti-dilutive.
Recent Accounting Pronouncements	Recent Accounting Pronouncements Recently Adopted Accounting Guidance In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842) (“ASU 2016-02”). ASU 2016-02 establishes a right-of-use (“ROU”) model that requires a lessee to record a ROU asset and a lease liability on the balance sheet for all leases with terms longer than twelve months. Leases will be classified as either finance or operating, with classification affecting the pattern of expense recognition in the Consolidated Statements of Income and Comprehensive Income. ASU 2016-02 is effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. A modified retrospective transition approach is required for lessees, capital and operating leases, existing at, or entered into after, the beginning of the earliest comparative period presented in the financial statements, with certain practical expedients available. The Company adopted ASU 2016-02 in the first quarter of 2019 using the modified retrospective approach, and elected the package of practical expedients permitted under the transition guidance. Results and disclosure requirements for reporting periods beginning after January 1, 2019 are presented under Topic 842, while prior period amounts have not been adjusted and continue to be reported in accordance with our historical accounting under Topic 840. We elected the package of practical expedients permitted under the transition guidance, which allowed us to carryforward our historical lease classification, our assessment on whether a contract was or contains a lease, and our initial direct costs for any leases that existed prior to January 1, 2019. We also elected to combine our lease and non-lease components and to keep leases with an initial term of 12 months or less off the balance sheet and recognize the associated lease payments in the consolidated statements of income on a straight-line basis over the lease term. The Company recorded operating lease assets with right-of-use of $27.5 million and $2.9 million current operating lease liability and $29.2 million non-current operating lease liability as of January 1, 2019, of which $4.9 million and $0.3 million were reclassified from deferred rent and prepaid rent, respectively (see Note 10). 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 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. We will adopt the new standard effective January 1, 2020 and do not expect the adoption of this guidance to have a material impact on our consolidated financial statements. In August 2018, the FASB issued ASU No. 2018-15, Intangibles-Goodwill and Other-Internal-Use Software (Subtopic 350-40): Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement that is a Service Contract, which requires implementation costs incurred by customers in cloud computing arrangements (i.e., hosting arrangements) to be capitalized under the same premises of authoritative guidance for internal-use software, and deferred over the non-cancellable term of the cloud computing arrangements plus any optional renewal periods that are reasonably certain to be exercised by the customer or for which the exercise is controlled by the service provider. ASU 2018-15 is effective for fiscal years beginning after December 15, 2019, and interim periods within those fiscal years, with early adoption permitted. We will adopt the new standard effective January 1, 2020 and do not expect the adoption of this guidance to have a material impact on our consolidated financial statements. In June 2016, the FASB issued ASU 2016-03, “Measurement of Credit Losses on Financial Instruments,” (ASU 2016-03) which amends ASC 326 “Financial Instruments—Credit Losses” which introduces a new methodology for accounting for credit losses on financial instruments. The guidance establishes a new forward looking "expected loss model" that requires entities to estimate current expected credit losses on accounts receivable and financial instruments by using all practical and relevant information. We will adopt the new standard effective January 1, 2020 and do not expect the adoption of this guidance to have a material impact on our consolidated financial statements. In August 2018, the FASB issued Accounting Standard Update No. 2018-13, “Changes to Disclosure Requirements for Fair Value Measurements” (Topic 820) (ASU 2018-13), which improved the effectiveness of disclosure requirements for recurring and nonrecurring fair value measurements. The standard removes, modifies, and adds certain disclosure requirements. We will adopt the new standard effective January 1, 2020 and do not expect the adoption of this guidance to have a material impact on our consolidated financial statements. In December 2019, the FASB issued Accounting Standard Update No. 2019-12, Income Taxes (Topic 740): “Simplifying the Accounting for Income Taxes” (ASU 2019-12), which simplifies the accounting for income taxes. This guidance will be effective for us in the first quarter of 2021 on a prospective basis, and early adoption is permitted. We are currently evaluating the impact of the new guidance on our consolidated financial statements.

Summary of Significant Accoun_3

Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2019
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, 2019, 2018, and 2017. Balance at Beginning of Year Provision Acquired in Business Combinations Write-offs, Net of Recoveries Balance at End of Year Year ended December 31, 2017 $ 1,961 $ 806 — $ (984 ) $ 1,783 Year ended December 31, 2018 $ 1,783 $ 986 — $ (670 ) $ 2,099 Year ended December 31, 2019 $ 2,099 $ 339 — $ (539 ) $ 1,899
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, 2019 2018 Furniture and fixtures $ 1,267 $ 1,266 Computer equipment and software 4,461 4,201 Leasehold improvements 3,779 3,844 Internal-use software and website development costs 28,546 29,692 38,053 39,003 Less: accumulated depreciation and amortization (25,682 ) (28,102 ) $ 12,371 $ 10,901
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, 2019 2018 2017 Numerator: Net income $ 16,875 $ 12,955 $ 6,803 Denominator: Basic: Weighted average shares of common stock and vested, undelivered restricted stock units outstanding 27,873,745 27,738,178 27,550,044 Diluted: Weighted average shares of common stock and vested, undelivered restricted stock units outstanding 27,873,745 27,678,959 27,550,044 Effect of potentially dilutive shares 437,942 973,855 721,340 Total weighted average shares of common stock and vested, undelivered restricted stock units outstanding and potentially dilutive shares 28,311,687 28,652,814 28,271,384 Calculation of Net Income Per Common Share: Basic: Net income applicable to common stockholders $ 16,875 $ 12,955 $ 6,803 Weighted average shares of stock outstanding 27,873,745 27,738,178 27,550,044 Net income per common share $ 0.61 $ 0.47 $ 0.25 Diluted: Net income applicable to common stockholders $ 16,875 $ 12,955 $ 6,803 Weighted average shares of stock outstanding 28,311,687 28,652,814 28,271,384 Net income per common share(1) $ 0.60 $ 0.45 $ 0.24 (1) In calculating diluted earnings per share, 0.3 million, 0.5 million, and 0.7 million shares related to outstanding stock options and unvested, undelivered restricted stock units were excluded for the years ended December 31, 2019, 2018, and 2017, respectively, because they were anti-dilutive.

Revenue (Tables)

Revenue (Tables)	12 Months Ended
	Dec. 31, 2019
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 and economic risk. International revenue consists of international geo-targeted campaigns, which are campaigns targeted at an audience of members outside of North America. Years Ended December 31, 2019 2018 2017 North America $ 89,582 $ 82,660 $ 73,349 International 44,375 38,673 35,207 Total Revenue $ 133,957 $ 121,333 $ 108,556
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 Deferral of revenue 7,666 Recognition of previously unearned revenue (8,904 ) Balance at December 31,2019 $ 4,335

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	12 Months Ended
	Dec. 31, 2019
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, 2019 Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Assets: Short-term investments(2) $ 5,012 $ — $ 5,012 $ — Total assets $ 5,012 $ — $ 5,012 $ — 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 — Total assets $ 15,570 $ 15,070 $ 500 $ — ( 1 ) Included in cash and cash equivalents on the accompanying consolidated balance sheets; valued at quoted market prices in active markets. (2) Short-term investments consist of municipal bonds, corporate bonds, bond funds, 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, 2019
Cash And Cash Equivalents [Abstract]
Cash and Cash Equivalents	Cash and cash equivalents consisted of the following: As of December 31, 2019 2018 Cash $ 52,487 $ 19,603 Money market funds — 15,070 Total cash and cash equivalents $ 52,487 $ 34,673
Short-term and Long-term Investments	Short-term and long-term investments consisted of the following: December 31, 2019 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Estimated Fair Value Short-term investments: Bond funds $ 5,012 $ — $ — $ 5,012 Total short-term investments $ 5,012 $ — $ — $ 5,012 December 31, 2018 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Estimated Fair Value Short-term investments: U.S. Treasury securities $ 500 $ — $ — $ 500 Total short-term investments $ 500 $ — $ — $ 500

Goodwill (Tables)

Goodwill (Tables)	12 Months Ended
	Dec. 31, 2019
Goodwill And Intangible Assets Disclosure [Abstract]
Changes in Carrying Amount of Goodwill	The changes in the carrying amount of goodwill are as follows: As of December 31, 2019 2018 Balance as of beginning of year $ 93,687 $ 93,793 Effect of exchange rate changes (48 ) (202 ) Additions — 96 Balance as of end of year $ 93,639 $ 93,687

Intangible Assets (Tables)

Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2019
Goodwill And Intangible Assets Disclosure [Abstract]
Summary of Intangible Assets	The following table summarizes the Company’s intangible assets, net: As of December 31, 2019 Estimated Useful Lives (Years) Gross Carrying Amount Accumulated Amortization Net Customer, affiliate and advertiser relationships 5-17 $ 6,520 $ (6,290 ) $ 230 Developed websites, technology and patents 10 1,476 (1,026 ) 450 Trademark, trade name and domain name 5-8 1,792 (1,763 ) 29 Proprietary user information database and internet traffic 5 1,122 (1,122 ) — Non-Compete agreement 1.5 10 (9 ) 1 Total intangible assets $ 10,920 $ (10,210 ) $ 710
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 2020 $ 112 2021 127 2022 156 2023 37 Thereafter 278 $ 710

Loan Agreement and Prior Term_2

Loan Agreement and Prior Term Loan Agreement (Tables)	12 Months Ended
	Dec. 31, 2019
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, 2019 related to the Loan Agreement are as follows: Years Ending December 31: 2020 $ 1,250 2021 1,875 2022 2,500 2023 18,125 Total principal on loan agreement 23,750 Unamortized debt issuance costs (36 ) Carrying amount of loan agreement 23,714 Less: current portion of loan agreement, net of $9 in unamortized debt issuance costs (1,241 ) Long-term portion of loan agreement, net of $27 in unamortized debt issuance costs $ 22,473

Leases and Contingencies (Table

Leases and Contingencies (Tables)	12 Months Ended
	Dec. 31, 2019
Lessee Disclosure [Abstract]
Summary of Maturity of Operating Lease Liabilities	As of December 31, 2019, operating lease assets were $26.4 million and operating lease liabilities were $30.7 million. The maturity of the Company’s operating lease liabilities as of December 31, 2019 were as follows: Minimum Lease Years Ending December 31: Payments 2020 $ 3,746 2021 4,180 2022 3,781 2023 3,696 2024 3,725 Thereafter 17,760 Total future minimum lease payments $ 36,888 Less imputed interest 6,147 Total operating lease liabilities $ 30,741 Included in the condensed consolidated balance sheet: Current operating lease liabilities $ 2,571 Non-current operating lease liabilities 28,170 Total operating lease liabilities $ 30,741
Summary of Lease Costs	The total lease cost is comprised of the following amounts (in thousands): Twelve Months Ended December 31,2019 Operating lease expense $ 3,865 Short-term lease expense 117 Total lease expense $ 3,982
Lessee Operating Lease Term and Discount Rate	The following summarizes additional information related to operating leases: As of December 31,2019 Weighted-average years remaining lease term — operating leases 5.4 Weighted-average discount rate — operating leases 4 %
Schedule of Future Minimum Lease Payments	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, 2019
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, 2019 2018 2017 Expected volatility 39 % 39 % 43 % Expected term 6 years 6 years 6 years Risk-free interest rate 2.15 % 2.82 % 1.87 % Expected dividend yield — % — % — % Weighted-average grant date fair value per share $ 8.08 $ 11.94 $ 4.61
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, 2019 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, 2018 186,000 $ 9.50 Granted 22,500 20.32 Exercised (68,500 ) 5.63 $ 1,331 Forfeited — — Canceled — — Options outstanding at December 31, 2019 140,000 $ 13.14 5.92 $ 1,861 Options exercisable at December 31, 2019 117,500 $ 11.76 5.25 $ 1,731 Options vested or expected to vest at December 31, 2019 139,035 $ 13.09 5.90 $ 1,856
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, 2019 is presented below: Shares Weighted- Average Grant Date Fair Value Per Share Aggregate Intrinsic Value Nonvested outstanding at December 31, 2018 1,197,261 $ 17.69 Granted 846,733 22.09 Vested (739,864 ) 15.42 Forfeited (3,000 ) 28.05 Nonvested outstanding at December 31, 2019 1,301,130 $ 21.52 $ 34,742

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2019
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, 2019 2018 2017 United States $ 20,709 $ 11,917 $ 9,435 Foreign 1,339 2,926 282 Income before income taxes $ 22,048 $ 14,843 $ 9,717
Income Tax Provision	The income tax provision consisted of the following: Years Ended December 31, 2019 2018 2017 Current: Federal $ 3,415 $ 1,540 $ 1,543 State 538 540 419 Foreign 347 (55 ) 57 Total current 4,300 2,025 2,019 Deferred: Federal 742 (65 ) 598 State 242 (53 ) 382 Foreign (111 ) (19 ) (85 ) Total deferred 873 (137 ) 895 $ 5,173 $ 1,888 $ 2,914
Difference by Applying the Statutory Federal Income Tax Rate	The income tax provision for the years ended December 31, 2019, 2018 and 2017 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, 2019 2018 2017 Provision computed at statutory rate $ 4,630 $ 3,116 $ 3,401 Increase resulting from: Difference in rates for foreign jurisdictions 18 93 37 Tax exempt interest income — (2 ) (12 ) Stock-based compensation (425 ) (1,708 ) (304 ) Other non-deductible expenses 243 252 (101 ) Non-deductible officers compensation 482 198 447 State income tax provision 615 396 653 Losses not benefitted — 23 4 Subsidiary earnings taxed in the US (11 ) (104 ) 127 True-up of prior year returns 1 (20 ) (161 ) Research and development credit (387 ) (279 ) (801 ) Tax Cuts and Jobs Act of 2017 — (11 ) (376 ) Cancellation of Foreign Subsidiary Debt — (127 ) — Other 7 61 — Provision for income taxes $ 5,173 $ 1,888 $ 2,914
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, 2019 2018 Deferred tax assets: Net operating loss carryforwards $ 99 $ 33 Contract liabilities — — Right of use operating lease liability 7,769 — Accruals and allowances 1,452 1,253 Stock-based compensation 1,397 1,286 Deferred rent expense — 1,267 Other 4 4 Gross deferred tax assets 10,721 3,843 Less valuation allowance (33 ) (33 ) Total deferred tax assets 10,688 3,810 Deferred tax liabilities: Intangible asset amortization (3,204 ) (2,603 ) Right of use operating lease asset (6,650 ) — Depreciation (2,309 ) (1,814 ) Total deferred tax liabilities (12,163 ) (4,417 ) Net deferred tax liabilities $ (1,475 ) $ (607 ) As reported: Non-current deferred tax assets $ 136 $ 55 Non-current deferred tax liabilities $ (1,611 ) $ (662 )

Segment Information (Tables)

Segment Information (Tables)	12 Months Ended
	Dec. 31, 2019
Long-Lived Assets by Geographic Area	Long-lived assets by geographic area were as follows: Years Ended December 31, 2019 2018 United States $ 102,572 $ 101,051 International 4,148 4,386 Total $ 106,720 $ 105,437
Customers by Campaign Target Area [Member]
Net Sales by Campaign Target Area and Geographic Area	Net sales by campaign target area were as follows (1): Years Ended December 31, 2019 2018 2017 North America $ 89,582 $ 82,660 $ 73,349 International 44,375 38,673 35,207 Total Revenue $ 133,957 $ 121,333 $ 108,556 (1) Net sales to customers by campaign target area is based on the geo-targeted (target audience) location of the campaign.
Unaffiliated Customers by Geographic Area [Member]
Net Sales by Campaign Target Area and Geographic Area	Net sales to unaffiliated customers by geographic area were as follows (2): Years Ended December 31, 2019 2018 2017 United States $ 99,669 $ 89,340 $ 77,982 United Kingdom 14,104 14,391 12,544 Other International 20,184 17,602 18,030 Total $ 133,957 $ 121,333 $ 108,556 (2) Net sales to unaffiliated customers by geographic area is based on the customers’ current billing addresses and does not consider the geo-targeted (target audience) location of the campaign.

Organization and Operations - A

Organization and Operations - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2019Website
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)	Jan. 01, 2019USD ($)	Dec. 31, 2019USD ($)SegmentReporting_UnitCustomer	Dec. 31, 2018USD ($)Customer	Dec. 31, 2017USD ($)Customer
Significant Accounting Policies [Line Items]
Number of reporting segment | Segment		1
Number of reporting unit | Reporting_Unit		1
Intangible assets with indefinite lives		$ 0	$ 0
Depreciation		4,900,000	4,400,000	$ 4,500,000
Write off of fully depreciated assets no longer in service		7,300,000	1,500,000	600,000
Capitalized internal-use software and website development costs		5,100,000	3,000,000	2,900,000
Reclassifications out of accumulated other comprehensive income		0	$ 0	$ 0
Operating lease, right-of-use asset	$ 27,500,000	26,385,000
Operating lease, liability, current		2,571,000
Operating lease, liability, noncurrent		$ 28,170,000
Accounting Standards Update 2016-02 [Member]
Significant Accounting Policies [Line Items]
Operating lease, right-of-use asset	27,500,000
Operating lease, liability, current	2,900,000
Operating lease, liability, noncurrent	29,200,000
Accounting Standards Update 2016-02 [Member] | Deferred Rent [Member]
Significant Accounting Policies [Line Items]
Operating lease, expense	4,900,000
Accounting Standards Update 2016-02 [Member] | Prepaid Rent [Member]
Significant Accounting Policies [Line Items]
Operating lease, expense	$ 300,000
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	0
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
Maximum [Member]
Significant Accounting Policies [Line Items]
Estimated useful lives		17 years

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, 2019	Dec. 31, 2018	Dec. 31, 2017
Regulatory Assets [Abstract]
Balance at Beginning of Year	$ 2,099	$ 1,783	$ 1,961
Provision	339	986	806
Write-offs, Net of Recoveries	(539)	(670)	(984)
Balance at End of Year	$ 1,899	$ 2,099	$ 1,783

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, 2019
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, 2019	Dec. 31, 2018
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 38,053	$ 39,003
Less: accumulated depreciation and amortization	(25,682)	(28,102)
Property and equipment, net	12,371	10,901
Furniture and Fixtures [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	1,267	1,266
Computer Equipment and Software [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	4,461	4,201
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	3,779	3,844
Internal-use software and website development costs
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 28,546	$ 29,692

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, 2019	Dec. 31, 2018	Dec. 31, 2017
Numerator:
Net income	$ 16,875	$ 12,955	$ 6,803
Basic:
Weighted average shares of common stock and vested, undelivered restricted stock units outstanding	27,873,745	27,738,178	27,550,044
Diluted:
Weighted average shares of common stock and vested, undelivered restricted stock units outstanding	27,873,745	27,678,959	27,550,044
Effect of potentially dilutive shares	437,942	973,855	721,340
Total weighted average shares of common stock and vested, undelivered restricted stock units outstanding and potentially dilutive shares	28,311,687	28,652,814	28,271,384
Basic:
Net income applicable to common stockholders	$ 16,875	$ 12,955	$ 6,803
Weighted average shares of stock outstanding	27,873,745	27,738,178	27,550,044
Net income per common share	$ 0.61	$ 0.47	$ 0.25
Diluted:
Net income applicable to common stockholders	$ 16,875	$ 12,955	$ 6,803
Weighted average shares of stock outstanding	28,311,687	28,652,814	28,271,384
Net income per common share	$ 0.60	$ 0.45	$ 0.24

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, 2019	Dec. 31, 2018	Dec. 31, 2017
Earnings Per Share [Abstract]
Outstanding stock options and unvested restricted stock units excluded from computation of diluted EPS	0.3	0.5	0.7

Revenue - Disaggregated Revenue

Revenue - Disaggregated Revenue (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Disaggregation Of Revenue [Line Items]
Total Revenue	$ 133,957	$ 121,333	$ 108,556
North America [Member]
Disaggregation Of Revenue [Line Items]
Total Revenue	89,582	82,660	73,349
International [Member]
Disaggregation Of Revenue [Line Items]
Total Revenue	$ 44,375	$ 38,673	$ 35,207

Revenue - Additional Informatio

Revenue - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Jan. 01, 2018	Dec. 31, 2017
Deferred Revenue Arrangement [Line Items]
Contract liabilities	$ 4,335	$ 5,573
Accounts receivable	$ 27,102	30,042
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	$ 4,335	5,573	$ 4,088	$ 7,598
Accounts receivable			26,091
ASU 2014-09 [Member] | Impact of Adoption of ASC 606 [Member]
Deferred Revenue Arrangement [Line Items]
Accounts receivable			3,510
Contract Liabilities [Member]
Deferred Revenue Arrangement [Line Items]
Accrued sales incentives	2,400	3,500
Contract Liabilities [Member] | ASU 2014-09 [Member]
Deferred Revenue Arrangement [Line Items]
Contract liabilities	$ 4,300	$ 5,600
Contract Liabilities [Member] | ASU 2014-09 [Member] | Impact of Adoption of ASC 606 [Member]
Deferred Revenue Arrangement [Line Items]
Contract liabilities			(3,500)
Accounts Receivable [Member] | ASU 2014-09 [Member] | Impact of Adoption of ASC 606 [Member]
Deferred Revenue Arrangement [Line Items]
Accounts receivable			$ (3,500)

Revenue - Schedule of Accounts

Revenue - Schedule of Accounts Receivable and Contract Liabilities (Detail) - USD ($) $ in Thousands	Jan. 01, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Deferred Revenue Arrangement [Line Items]
Accounts Receivable		$ 27,102	$ 30,042
Contract Liabilities, Balance		5,573
Adjustment to deferred revenue as a result of adoption of ASC 606		(1,237)	(2,025)	$ 1,519
Contract Liabilities, Balance		4,335	5,573
ASU 2014-09 [Member]
Deferred Revenue Arrangement [Line Items]
Accounts Receivable	$ 26,091
Contract Liabilities, Balance	7,598	5,573	7,598
Contract Liabilities, Deferral of revenue		7,666	5,573
Contract Liabilities, Recognition of previously unearned revenue		(8,904)	(4,088)
Contract Liabilities, Balance	4,088	$ 4,335	$ 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, 2019	Dec. 31, 2018
Assets:
Total assets	$ 5,012	$ 15,570
Money Market Funds [Member]
Assets:
Total assets		15,070
Short-Term Investments [Member]
Assets:
Total assets	5,012	500
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Assets:
Total assets		15,070
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Money Market Funds [Member]
Assets:
Total assets		15,070
Significant Other Observable Inputs (Level 2) [Member]
Assets:
Total assets	5,012	500
Significant Other Observable Inputs (Level 2) [Member] | Short-Term Investments [Member]
Assets:
Total assets	$ 5,012	$ 500

Acquisition - Additional Inform

Acquisition - Additional Information (Detail) $ in Millions	Aug. 01, 2018USD ($)
Oceanos Marketing, Inc [Member]
Business Acquisition [Line Items]
Consideration paid on acquisition	$ 0.6

Cash, Cash Equivalents and In_3

Cash, Cash Equivalents and Investments - Cash and Cash Equivalents (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Cash And Cash Equivalents [Abstract]
Cash	$ 52,487	$ 19,603
Money market funds		15,070
Total cash and cash equivalents	$ 52,487	$ 34,673

Cash, Cash Equivalents and In_4

Cash, Cash Equivalents and Investments - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2019USD ($)Security	Dec. 31, 2018USD ($)Security	Dec. 31, 2017USD ($)
Cash And Cash Equivalents [Abstract]
Cumulative unrealized loss, net of taxes	$ 0	$ 15,000	$ 17,000
Realized gains or losses	$ 0	$ 0	$ 0
Number of securities in unrealized loss position | Security	0	0
Municipal bonds maturity date		Jan. 31, 2019

Cash, Cash Equivalents and In_5

Cash, Cash Equivalents and Investments - Short-term and Long-term Investments (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$ 5,012	$ 500
Estimated Fair Value	5,012	500
Bond Funds [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	5,012
Estimated Fair Value	$ 5,012
U.S. Treasury Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost		500
Estimated Fair Value		$ 500

Goodwill - Changes in Carrying

Goodwill - Changes in Carrying Amount of Goodwill (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Goodwill And Intangible Assets Disclosure [Abstract]
Balance as of beginning of year	$ 93,687	$ 93,793
Effect of exchange rate changes	(48)	(202)
Additions		96
Balance as of end of year	$ 93,639	$ 93,687

Intangible Assets - Summary of

Intangible Assets - Summary of Intangible Assets (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 10,920	$ 10,906
Accumulated Amortization	(10,210)	(10,057)
Total intangible assets	$ 710	849
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]
Gross Carrying Amount	$ 6,520	6,500
Accumulated Amortization	(6,290)	(6,256)
Total intangible assets	$ 230	$ 244
Customer, Affiliate and Advertiser Relationships [Member] | Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated useful lives	5 years	5 years
Customer, Affiliate and Advertiser Relationships [Member] | Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated useful lives	17 years	17 years
Developed Websites, Technology and Patents [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated useful lives	10 years	10 years
Gross Carrying Amount	$ 1,476	$ 1,502
Accumulated Amortization	(1,026)	(958)
Total intangible assets	450	544
Trademarks, Trade Name and Domain Name [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	1,792	1,784
Accumulated Amortization	(1,763)	(1,730)
Total intangible assets	$ 29	$ 54
Trademarks, Trade Name and Domain Name [Member] | Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated useful lives	5 years	5 years
Trademarks, Trade Name and Domain Name [Member] | Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated useful lives	8 years	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	$ 1,122	$ 1,110
Accumulated Amortization	$ (1,122)	$ (1,110)
Non-Compete Agreement [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated useful lives	1 year 6 months	1 year 6 months
Gross Carrying Amount	$ 10	$ 10
Accumulated Amortization	(9)	(3)
Total intangible assets	$ 1	$ 7

Intangible Assets - Additional

Intangible Assets - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Finite-Lived Intangible Assets [Line Items]
Remaining amortization period	4 years 11 months 19 days
Amortization of intangible assets	$ 100,000	$ 100,000	$ 200,000
Write off of intangible assets	$ 0	$ 700,000	$ 0
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) $ in Thousands	Dec. 31, 2019USD ($)
Goodwill And Intangible Assets Disclosure [Abstract]
2020	$ 112
2021	127
2022	156
2023	37
Thereafter	278
Total intangible assets	$ 710

Loan Agreement and Prior Term_3

Loan Agreement and Prior Term Loan Agreement - Additional Information (Detail) - USD ($) $ in Thousands	Dec. 24, 2018	May 09, 2016	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Line Of Credit Facility [Line Items]
Aggregate principal amount of term loan borrowed				$ 25,000
Amortization of deferred issuance costs			$ 9	298	$ 109
Senior Secured Credit Facilities Credit Agreement [Member]
Line Of Credit Facility [Line Items]
Credit agreement bearing interest rate			Annual rate of 1.50%
Interest bearing rate		1.50%
LIBOR margin			plus 2.50
Interest expense			$ 900	1,400
Amortization of deferred issuance costs			9	300
Term loan principal payment			1,300
Interest cash payments			$ 900	$ 1,200	$ 1,400
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] | 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%
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%
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, 2019	Dec. 31, 2018
Debt Instrument [Line Items]
Less: current portion of loan agreement, net of $9 in unamortized debt issuance costs	$ (1,241)	$ (1,241)
Long-term portion of loan agreement, net of $27 in unamortized debt issuance costs	22,473	$ 23,714
Senior Secured Credit Facilities Credit Agreement [Member]
Debt Instrument [Line Items]
2020	1,250
2021	1,875
2022	2,500
2023	18,125
Total principal on loan agreement	23,750
Unamortized debt issuance costs	(36)
Carrying amount of loan agreement	23,714
Less: current portion of loan agreement, net of $9 in unamortized debt issuance costs	(1,241)
Long-term portion of loan agreement, net of $27 in unamortized debt issuance costs	$ 22,473

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, 2019USD ($)
Debt Instrument [Line Items]
Debt issuance costs, current, net	$ 9
Debt issuance costs, noncurrent, net	$ 27

Leases and Contingencies - Addi

Leases and Contingencies - Additional Information (Detail)	Oct. 26, 2017USD ($)ft²	Dec. 31, 2019USD ($)	Dec. 31, 2018USD ($)	Dec. 31, 2017USD ($)	Dec. 31, 2016USD ($)	Jan. 01, 2019USD ($)
Lessee Lease Description [Line Items]
Operating lease assets (right -of-use assets)		$ 26,385,000				$ 27,500,000
Operating lease liabilities		$ 30,741,000				$ 32,100,000
Total rent expense under the Company's leases			$ 4,000,000	$ 4,500,000	$ 4,400,000
Lessee, operating lease, existence of option to extend		true
Commitment for non-cancelable operating leases			39,591,000
Charges, claims related to litigation		$ 0	$ 0
Minimum [Member]
Lessee Lease Description [Line Items]
Lessee, operating lease, renewal term		1 year
Maximum [Member]
Lessee Lease Description [Line Items]
Lessee, operating lease, renewal term		5 years
Third Amendment Newton Lease [Member]
Lessee Lease Description [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] | Minimum [Member]
Lessee Lease Description [Line Items]
Lease agreement for office | ft²	74,000
Third Amendment Newton Lease [Member] | Maximum [Member]
Lessee Lease Description [Line Items]
Lease agreement for office | ft²	110,000

Leases and Contingencies - Summ

Leases and Contingencies - Summary of Maturity of Operating Lease Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Jan. 01, 2019
Operating Lease Liabilities Payments Due [Abstract]
2020	$ 3,746
2021	4,180
2022	3,781
2023	3,696
2024	3,725
Thereafter	17,760
Total future minimum lease payments	36,888
Less imputed interest	6,147
Operating lease liabilities	$ 30,741	$ 32,100

Leases and Contingencies - Su_2

Leases and Contingencies - Summary of Operating Lease Liabilities Included in Condensed Consolidated Balance Sheet (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Jan. 01, 2019
Assets And Liabilities Lessee [Abstract]
Current operating lease liability	$ 2,571
Non-current operating lease liabilities	28,170
Total operating lease liabilities	$ 30,741	$ 32,100

Leases and Contingencies - Su_3

Leases and Contingencies - Summary of Lease Costs (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2019USD ($)
Operating Lease Liabilities Payments Due [Abstract]
Operating lease expense	$ 3,865
Short-term lease expense	117
Total lease expense	$ 3,982

Leases and Contingencies - Su_4

Leases and Contingencies - Summary of Additional Information Related to Operating Leases (Detail)	Dec. 31, 2019
Lease Cost [Abstract]
Weighted-average years remaining lease term — operating leases	5 years 4 months 24 days
Weighted-average discount rate — operating leases	4.00%

Leases and Contingencies - Sche

Leases and Contingencies - Schedule of Future Minimum Lease Payments (Detail) $ in Thousands	Dec. 31, 2018USD ($)
Operating Leases Future Minimum Payments Due [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, 2019	Dec. 31, 2018	Dec. 31, 2017	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	140,000	186,000
Expected dividend yield	0.00%	0.00%	0.00%
Intrinsic value of options exercised	$ 1,331	$ 2,700	$ 900
Cash received from exercise of options	386	1,005	942
Employee service share-based compensation, nonvested units, compensation cost not yet recognized	$ 23,700
Employee service share-based compensation, nonvested units, compensation cost not yet recognized, period for recognition	2 years
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	$ 11,400	$ 7,000	$ 7,100
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	107,500
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	1,363,630
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, 2019	Dec. 31, 2018	Dec. 31, 2017
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Expected volatility	39.00%	39.00%	43.00%
Expected term	6 years	6 years	6 years
Risk-free interest rate	2.15%	2.82%	1.87%
Expected dividend yield	0.00%	0.00%	0.00%
Weighted-average grant date fair value per share	$ 8.08	$ 11.94	$ 4.61

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, 2019	Dec. 31, 2018	Dec. 31, 2017
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Options outstanding, beginning balance	186,000
Options Outstanding, Granted	22,500
Options Outstanding, Exercised	(68,500)
Options outstanding, ending balance	140,000	186,000
Options Outstanding, Options exercisable	117,500
Options Outstanding, Options vested or expected to vest	139,035
Weighted-Average Exercise Price Per Share, Options outstanding, beginning balance	$ 9.50
Weighted-Average Exercise Price Per Share, Granted	20.32
Weighted-Average Exercise Price Per Share, Exercised	5.63
Weighted- Average Exercise Price Per Share, Options outstanding, ending balance	13.14	$ 9.50
Weighted- Average Exercise Price Per Share, Options exercisable	11.76
Weighted-Average Exercise Price Per Share, Options vested or expected to vest	$ 13.09
Weighted-Average Remaining Contractual Term in Years, Options outstanding	5 years 11 months 1 day
Weighted-Average Remaining Contractual Term in Years, Options exercisable	5 years 3 months
Weighted-Average Remaining Contractual Term in Years, Options vested or expected to vest	5 years 10 months 24 days
Aggregate Intrinsic Value, Exercised	$ 1,331	$ 2,700	$ 900
Aggregate Intrinsic Value, Options outstanding	1,861
Aggregate Intrinsic Value, Options exercisable	1,731
Aggregate Intrinsic Value, Options vested or expected to vest	$ 1,856

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, 2019USD ($)$ / sharesshares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares, Nonvested outstanding, beginning balance | shares	1,197,261
Shares, Granted | shares	846,733
Shares, Vested | shares	(739,864)
Shares, Forfeited | shares	(3,000)
Shares, Nonvested outstanding, ending balance | shares	1,301,130
Weighted-Average Grant Date Fair Value Per Share, Nonvested outstanding, beginning balance | $ / shares	$ 17.69
Weighted-Average Grant Date Fair Value Per Share, Granted | $ / shares	22.09
Weighted-Average Grant Date Fair Value Per Share, Vested | $ / shares	15.42
Weighted-Average Grant Date Fair Value Per Share, Forfeited | $ / shares	28.05
Weighted-Average Grant Date Fair Value Per Share, Nonvested outstanding, ending balance | $ / shares	$ 21.52
Aggregate Intrinsic Value, Nonvested outstanding | $	$ 34,742

Stockholders' Equity - Addition

Stockholders' Equity - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Nov. 07, 2019	Jun. 30, 2016
Schedule of Trading Securities and Other Trading Assets [Line Items]
Common stock repurchase, amount	$ 7,067,000	$ 7,089,000	$ 8,085,000
November 2019 Stock Repurchase Plan [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Common stock repurchase authorized amount				$ 25,000,000
November 2018 Stock Repurchase Plan [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Common stock repurchased, shares	411,849	243,425
Common stock repurchase, amount	$ 7,100,000	$ 3,100,000
Stock repurchased, average price per share	$ 17.14	$ 12.82
June 2016 Repurchase Program [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Common stock repurchase authorized amount					$ 20,000,000
Common stock repurchased, shares		211,729	749,437
Common stock repurchase, amount		$ 3,900,000	$ 8,100,000
Stock repurchase program expiration date	Aug. 31, 2018
2007 and 2017 Plans [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Common stock reserved	2,507,272

Income Taxes - Schedule of Inco

Income Taxes - Schedule of Income Before Provision for Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
United States	$ 20,709	$ 11,917	$ 9,435
Foreign	1,339	2,926	282
Income before provision for income taxes	$ 22,048	$ 14,843	$ 9,717

Income Taxes - Income Tax Provi

Income Taxes - Income Tax Provision (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Current:
Federal	$ 3,415	$ 1,540	$ 1,543
State	538	540	419
Foreign	347	(55)	57
Total current	4,300	2,025	2,019
Deferred:
Federal	742	(65)	598
State	242	(53)	382
Foreign	(111)	(19)	(85)
Total deferred	873	(137)	895
Provision for income taxes	$ 5,173	$ 1,888	$ 2,914

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($)	Dec. 31, 2017	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Taxes [Line Items]
Corporate tax rate			21.00%		35.00%
Revaluation of deferred tax balances, income tax expense (benefit)					$ 400,000
Current tax expense in connection with transition tax	$ 45,000				45,000
Net current tax benefit					400,000
Total transition tax on Federal tax return		$ 31,000
Valuation allowance		33,000	$ 33,000	$ 33,000
Decrease in valuation allowance				300,000	$ 100,000
NOL carryforwards			600,000
Unrecognized tax expenses			0
Undistributed earnings, foreign subsidiaries			8,300,000
Foreign Country [Member]
Income Taxes [Line Items]
NOL carryforwards			600,000
Foreign Country [Member] | Hong Kong [Member]
Income Taxes [Line Items]
Valuation allowance			200,000
NOL carryforwards		$ 200,000	$ 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, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Provision computed at statutory rate	$ 4,630	$ 3,116	$ 3,401
Increase resulting from:
Difference in rates for foreign jurisdictions	18	93	37
Tax exempt interest income		(2)	(12)
Stock-based compensation	(425)	(1,708)	(304)
Other non-deductible expenses	243	252	(101)
Non-deductible officers compensation	482	198	447
State income tax provision	615	396	653
Losses not benefitted		23	4
Subsidiary earnings taxed in the US	(11)	(104)	127
True-up of prior year returns	1	(20)	(161)
Research and development credit	(387)	(279)	(801)
Tax Cuts and Jobs Act of 2017		(11)	(376)
Cancellation of Foreign Subsidiary Debt		(127)
Other	7	61
Provision for income taxes	$ 5,173	$ 1,888	$ 2,914

Income Taxes - Significant Comp

Income Taxes - Significant Components of the Company's Net Deferred Tax Assets and Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Deferred tax assets:
Net operating loss carryforwards	$ 99	$ 33
Right of use operating lease liability	7,769
Accruals and allowances	1,452	1,253
Stock-based compensation	1,397	1,286
Deferred rent expense		1,267
Other	4	4
Gross deferred tax assets	10,721	3,843
Less valuation allowance	(33)	(33)
Total deferred tax assets	10,688	3,810
Deferred tax liabilities:
Intangible asset amortization	(3,204)	(2,603)
Right of use operating lease asset	(6,650)
Depreciation	(2,309)	(1,814)
Total deferred tax liabilities	(12,163)	(4,417)
Net deferred tax liabilities	(1,475)	(607)
As reported:
Non-current deferred tax assets	136	55
Non-current deferred tax liabilities	$ (1,611)	$ (662)

Segment Information - Additiona

Segment Information - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2019Segment
Segment Reporting [Abstract]
Number of operating segment	1

Segment Information - Net Sales

Segment Information - Net Sales by Campaign Target Area (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Revenues from External Customers and Long-Lived Assets [Line Items]
Total Revenue	$ 133,957	$ 121,333	$ 108,556
Customers by Campaign Target Area [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total Revenue	133,957	121,333	108,556
North America [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total Revenue	89,582	82,660	73,349
North America [Member] | Customers by Campaign Target Area [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total Revenue	89,582	82,660	73,349
International [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total Revenue	44,375	38,673	35,207
International [Member] | Customers by Campaign Target Area [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total Revenue	$ 44,375	$ 38,673	$ 35,207

Segment Information - Net Sal_2

Segment Information - Net Sales to Customers by Geographic Area (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales, Total	$ 133,957	$ 121,333	$ 108,556
Unaffiliated Customers by Geographic Area [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales, Total	133,957	121,333	108,556
United States [Member] | Unaffiliated Customers by Geographic Area [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales, Total	99,669	89,340	77,982
United Kingdom [Member] | Unaffiliated Customers by Geographic Area [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales, Total	14,104	14,391	12,544
Other International [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales, Total	44,375	38,673	35,207
Other International [Member] | Unaffiliated Customers by Geographic Area [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales, Total	$ 20,184	$ 17,602	$ 18,030

Segment Information - Long-Live

Segment Information - Long-Lived Assets by Geographic Area (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets, Total	$ 106,720	$ 105,437
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets, Total	102,572	101,051
International [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets, Total	$ 4,148	$ 4,386

401(k) Plan - Additional Inform

401(k) Plan - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Defined Contribution Plan Disclosure [Line Items]
Company's contribution to the plan, percentage	50.00%
Company's contribution to the plan, amount	$ 1,200,000	$ 1,100,000	$ 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	$ 3,000	$ 2,000

Subsequent Events - Additional

Subsequent Events - Additional Information (Detail) - Data Science Central LLC [Member] - Subsequent Event [Member] $ in Millions	Feb. 18, 2020USD ($)
Subsequent Event [Line Items]
Cash paid for acquisition	$ 5.5
Contingent consideration payable upon condition	$ 2