TechTarget (TTGT) 10-Q 7 Nov 18 2018 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2018	Oct. 31, 2018
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2018
Document Fiscal Year Focus	2,018
Document Fiscal Period Focus	Q3
Trading Symbol	TTGT
Entity Registrant Name	TechTarget Inc
Entity Central Index Key	1,293,282
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Entity Emerging Growth Company	false
Entity Small Business	false
Entity Common Stock, Shares Outstanding		28,001,671

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 29,447	$ 25,966
Short-term investments	3,000	7,650
Accounts receivable, net of allowance for doubtful accounts of $1,975 and $1,783 as of September 30, 2018 and December 31, 2017, respectively	27,621	29,601
Prepaid taxes	2,171	1,303
Prepaid expenses and other current assets	3,751	3,088
Total current assets	65,990	67,608
Property and equipment, net	10,980	9,786
Long-term investments		496
Goodwill	93,709	93,793
Intangible assets, net	892	506
Deferred tax assets	526	98
Other assets	869	882
Total assets	172,966	173,169
Current liabilities:
Accounts payable	1,960	1,542
Current portion of term loan	9,888	9,888
Accrued expenses and other current liabilities	3,130	3,343
Accrued compensation expenses	1,394	1,397
Income taxes payable	141	218
Contract liabilities	5,275	7,598
Total current liabilities	21,788	23,986
Long-term liabilities:
Long-term portion of term loan	14,898	22,339
Deferred rent	5,027	5,259
Deferred tax liabilities	396	838
Total liabilities	42,109	52,422
Commitments and contingencies (Note 9)
Stockholders’ equity:
Preferred stock, 5,000,000 shares authorized; no shares issued or outstanding
Common stock, $0.001 par value per share, 100,000,000 shares authorized, 54,082,275 shares issued and 28,001,671 shares outstanding at September 30, 2018 and 53,338,297 shares issued and 27,483,115 shares outstanding at December 31, 2017	54	53
Treasury stock, 26,080,604 shares at September 30, 2018 and 25,855,182 shares at December 31, 2017, at cost	(174,780)	(170,816)
Additional paid-in capital	304,789	300,763
Accumulated other comprehensive (loss) income	(171)	65
Retained earnings (accumulated deficit)	965	(9,318)
Total stockholders’ equity	130,857	120,747
Total liabilities and stockholders’ equity	$ 172,966	$ 173,169

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Statement Of Financial Position [Abstract]
Allowance for doubtful accounts, accounts receivable	$ 1,975	$ 1,783
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	100,000,000	100,000,000
Common stock, shares issued	54,082,275	53,338,297
Common stock, shares outstanding	28,001,671	27,483,115
Treasury stock, shares	26,080,604	25,855,182

Consolidated Statements of Inco

Consolidated Statements of Income and Comprehensive Income - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Income Statement [Abstract]
Revenues		$ 30,742	$ 28,012	$ 89,513	$ 78,253
Cost of revenues	[1]	7,445	6,951	21,294	20,972
Gross profit		23,297	21,061	68,219	57,281
Operating expenses:
Selling and marketing	[1]	12,479	11,568	35,254	33,006
Product development	[1]	2,340	2,209	6,527	6,168
General and administrative	[1]	3,938	3,288	10,663	9,542
Depreciation and amortization		1,156	1,109	3,404	3,375
Total operating expenses		19,913	18,174	55,848	52,091
Operating income		3,384	2,887	12,371	5,190
Interest and other expense, net		(362)	(190)	(1,206)	(447)
Income before (benefit from) provision for income taxes		3,022	2,697	11,165	4,743
(Benefit from) provision for income taxes		(747)	623	882	1,337
Net income		3,769	2,074	10,283	3,406
Other comprehensive (loss) income, net of tax:
Unrealized gain on investments (net of tax provision of $5, $3, $8 and $11, respectively)		1	6	13	20
Foreign currency translation (loss) gain		(120)	71	(249)	233
Other comprehensive (loss) income		(119)	77	(236)	253
Comprehensive income		$ 3,650	$ 2,151	$ 10,047	$ 3,659
Net income per common share:
Basic		$ 0.14	$ 0.08	$ 0.37	$ 0.12
Diluted		$ 0.13	$ 0.07	$ 0.36	$ 0.12
Weighted average common shares outstanding:
Basic		27,827	27,555	27,627	27,521
Diluted		28,764	28,320	28,711	28,275
[1]	Amounts include stock-based compensation expense as follows:  Cost of revenues $53 $13 $114 $38 Selling and marketing 1,608 1,284 3,263 3,161 Product development 73 18 113 92 General and administrative 1,394 811 2,654 2,018

Consolidated Statements of In_2

Consolidated Statements of Income and Comprehensive Income (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Unrealized gain (loss) on investments, tax effect	$ 5	$ 3	$ 8	$ 11
Cost of Revenues [Member]
Allocated stock-based compensation expense	53	13	114	38
Selling and Marketing [Member]
Allocated stock-based compensation expense	1,608	1,284	3,263	3,161
Product Development [Member]
Allocated stock-based compensation expense	73	18	113	92
General and Administrative [Member]
Allocated stock-based compensation expense	$ 1,394	$ 811	$ 2,654	$ 2,018

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Operating activities:
Net income	$ 10,283	$ 3,406
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	3,404	3,375
Provision for bad debt	701	606
Amortization of investment premiums	68	214
Stock-based compensation	6,144	5,309
Amortization of debt issuance costs	84	81
Changes in operating assets and liabilities:
Accounts receivable	1,158	(7,447)
Prepaid expenses and other current assets	(1,072)	(759)
Other assets	1	44
Accounts payable	266	(618)
Income taxes payable	(1,391)	1,581
Accrued expenses and other current liabilities	270	(130)
Accrued compensation expenses	8	519
Contract liabilities	(2,322)	3,159
Other liabilities	(229)	(321)
Net cash provided by operating activities	17,373	9,019
Investing activities:
Purchases of property and equipment, and other capitalized assets	(4,970)	(2,761)
Purchases of investments		(500)
Proceeds from sales and maturities of investments	5,100	7,300
Acquisitions of businesses, net	(370)
Net cash (used for) provided by investing activities	(240)	4,039
Financing activities:
Tax withholdings related to net share settlements	(3,073)	(3,789)
Purchase of treasury shares and related costs	(3,964)	(5,222)
Proceeds from exercise of stock options	956	561
Debt issuance costs		(50)
Term loan principal payment	(7,500)	(3,750)
Net cash used in financing activities	(13,581)	(12,250)
Effect of exchange rate changes on cash and cash equivalents	(71)	(40)
Net increase in cash and cash equivalents	3,481	768
Cash and cash equivalents at beginning of period	25,966	18,485
Cash and cash equivalents at end of period	29,447	19,253
Supplemental disclosure of cash flow information:
Cash paid for (refunded from) taxes, net	2,734	$ (166)
Property and equipment included in accounts payable and in accrued expenses and other liabilities	$ 408

Organization and Operations

Organization and Operations	9 Months Ended
	Sep. 30, 2018
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Organization and Operations	1. Organization and Operations TechTarget, Inc. and its subsidiaries (the “Company”) is a leading provider of specialized online content for buyers of enterprise information technology (“IT”) products and services, and a leading provider of purchase-intent marketing and sales services for enterprise technology vendors. The Company’s service offerings enable technology vendors to better identify, reach, and influence corporate IT decision makers actively researching specific IT purchases. The Company improves vendors’ ability to impact these audiences for business growth using advanced targeting, analytics, and data services complemented with customized marketing programs that integrate demand generation and brand advertising techniques. The Company operates a network of over 140 websites, each of which focuses on a specific IT sector such as storage, security, or networking. IT and business professionals have become increasingly specialized, and they have come to rely on the Company’s sector-specific websites for purchasing decision support. The Company’s content platform enables IT and business professionals to navigate the complex and rapidly changing IT landscape where purchasing decisions can have significant financial and operational consequences. At critical stages of the purchase decision process, these content offerings, through different channels, meet IT and business professionals’ needs for expert, peer, and IT vendor information and provide a platform on which IT vendors can launch targeted marketing campaigns which generate measurable return on investment. Based upon the logical clustering of members’ respective job responsibilities and the marketing focus of the products being promoted by the Company’s customers, the Company categorizes its content offerings to address the key market opportunities and audience extensions across a portfolio of distinct media groups including: Security; Networking; Storage; Data Center and Virtualization Technologies; CIO/IT Strategy; Business Applications and Analytics; Application Architecture and Development; and Channel.

Summary of Significant Accounti

Summary of Significant Accounting Policies	9 Months Ended
	Sep. 30, 2018
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	2. Summary of Significant Accounting Policies The accompanying consolidated financial statements reflect the application of certain significant accounting policies as described below and elsewhere in these Notes to Consolidated Financial Statements. The Company’s critical accounting policies are those that affect its more significant judgments used in the preparation of its consolidated financial statements. A description of the Company’s critical accounting policies and estimates is contained in its Annual Report on Form 10-K for the fiscal year ended December 31, 2017, and in this note to the consolidated financial statements. There were no material changes to the Company’s critical accounting policies and use of estimates during the first nine months of 2018, other than those related revenue recognition resulting from the adoption of a new accounting pronouncement, as described in this Note 2 under “Revenue Recognition”. 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 (Beijing) Information Technology Consulting Co. Ltd. (“TTGT Consulting”), 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. Additionally, through its wholly-owned subsidiaries, TTGT HK and TTGT Consulting, the Company effectively controls a variable interest entity (“VIE”), Keji Wangtuo Information Technology Co., Ltd., (“KWIT”), which was incorporated under the laws of the People’s Republic of China (“PRC”). In 2018, TechTarget began modifying its PRC operations and consolidating its activities with other TechTarget locations. 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. PRC laws and regulations prohibit or restrict foreign ownership of internet-related services and advertising businesses. To comply with these foreign ownership restrictions, the Company operates its websites and provides online advertising services in the PRC through KWIT. The Company entered into certain exclusive agreements with KWIT and its shareholders through TTGT HK, which obligated TTGT HK to absorb all of the risk of loss from KWIT’s activities and entitled TTGT HK to receive all of its residual returns. In addition, the Company entered into certain agreements with the authorized parties through TTGT HK, including Management and Consulting Services, Voting Proxy, Equity Pledge and Option Agreements. TTGT HK assigned all of its rights and obligations to the newly formed wholly foreign-owned enterprise, TTGT Consulting. TTGT Consulting is established and existing under the laws of the PRC, and is wholly owned by TTGT HK. Based on these contractual arrangements, the Company consolidates the financial results of KWIT as required by Accounting Standards Codification (“ASC”) subtopic 810-10, Consolidation: Overall, because the Company holds all the variable interests of KWIT through TTGT Consulting, which is the primary beneficiary of KWIT. Despite the lack of technical majority ownership, there exists a parent-subsidiary relationship between the Company and the VIE through the aforementioned agreements, whereby the equity holders of KWIT assigned all of their voting rights underlying their equity interest in KWIT to TTGT Consulting. In addition, through the other aforementioned agreements, the Company demonstrates its ability and intention to continue to exercise the ability to obtain substantially all of the profits and absorb all of the expected losses of KWIT. All significant intercompany accounts and transactions among the Company, its subsidiaries, and KWIT have been eliminated in consolidation. Basis of Presentation The accompanying unaudited consolidated financial statements have been prepared in accordance with accounting principles generally accepted (Generally Accepted Accounting Principles or “ ” “U.S.” Reclassifications Historically, the Company presented online revenues and online cost of revenues separately from events revenues and events cost of revenues. On the Consolidated Statements of Income and Comprehensive Income, the Company has combined these into a single line item for revenues and a single line item for cost of revenues, since the events product line, which phased out in the first quarter of 2017, generated immaterial revenues and cost of revenues for the nine months ended September 30, 2017 and no revenues or cost of revenues in the other periods presented on the Consolidated Statements of Income and Comprehensive Income. These reclassifications are not material and had no effect on the total reported revenues or cost of revenues. In addition, the Company historically presented depreciation expense and amortization expense as separate line items on the Consolidated Statements of Income and Comprehensive Income. Due to the immateriality of amortization expense, the Company has combined these expenses into a single line item. This reclassification had no effect on total 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, and income taxes. The Company reduces its accounts receivable for an allowance for doubtful accounts based on its best estimate of the amount of probable credit losses. 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 The Company generates substantially all of its revenues from the sale of targeted marketing and sales services and advertising campaigns utilizing, which it delivers via its network of websites and 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) i dentifying 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 Recent Accounting Pronouncements Recently Adopted Accounting Guidance In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606) (“Topic 606”), which supersedes the revenue recognition requirements in ASC 605, Revenue Recognition (“Topic 605”). Topic 606 is based on the principle that revenue is recognized to depict the transfer of goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. Topic 606 provides that an entity should apply a five-step approach for recognizing revenue, as described above in this Note 2 under “Revenue Recognition.” This guidance also requires additional disclosure about the nature, amount, timing and uncertainty of revenue and cash flows arising from customer contracts, including significant judgments and changes in judgments and assets recognized from costs incurred to obtain or fulfill a contract. The Company adopted the standard effective January 1, 2018, using the modified retrospective approach. Under this method, the Company evaluated contracts that were in effect at the beginning of fiscal 2018 as if those contracts had been accounted for under Topic 606. Under the modified retrospective approach, periods prior to the adoption date were not adjusted and continue to be reported in accordance with historical, pre-Topic 606 accounting. The adoption of the standard did not have a material effect on the Company’s consolidated financial statements, systems, processes, or internal controls. Accounting Guidance Not Yet Adopted 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 for 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 will adopt ASU 2016-02 in the first quarter of 2019 using the modified retrospective approach, and intends to elect the package of practical expedients permitted under the transition guidance. The Company anticipates that this standard will have a material impact on its financial position, primarily due to office space operating leases, for which the Company will be required to recognize the ROU assets and lease liabilities on its Consolidated Balance Sheets. 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. The Company is currently evaluating the impact that this standard will have on its consolidated financial statements and disclosures but does not expect that it will have a material impact. 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 option 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. The Company is currently evaluating the impact of this standard on its consolidated financial statements and disclosures but does not expect that it will have a material impact .

Revenues

Revenues	9 Months Ended
	Sep. 30, 2018
Revenue Recognition [Abstract]
Revenues	3. Revenues Revenue Recognition On January 1, 2018, the Company adopted Topic 606 and, as such, recognizes revenue when performance obligations are satisfied by transferring promised goods or services to customers in an amount the Company expects to receive in exchange for those goods or services. The Company enters into contracts that can include various combinations of its offerings, which are generally capable of being distinct and accounted for as separate performance obligations. The Company’s offerings consist of IT Deal Alert TM IT Deal Alert provides a suite of products that leverages detailed purchase intent data that we collect about end-user IT organizations. Through proprietary scoring methodologies, we use this insight to help our customers identify and prioritize accounts. We provide this insight through Priority Engine TM TM TM TM TM Core consists primarily of demand solutions, brand solutions, and custom content. Demand solutions offerings provide the Company’s customers the opportunity to maximize return on investment by capturing sales leads from the distribution and promotion of content to its audience. Demand solutions may contain the following components: white papers, webcasts, podcasts, videocasts and virtual trade shows, and content sponsorship, which the Company may utilize at its discretion. Brand solutions provide the Company’s customers to target audiences of IT and business professionals actively researching information related to their products and services. This can be accomplished through on-network or off-network branding as well as through the hosting of microsites. The Company will at times create custom content, such as white papers, case studies, webcasts, or videos, to our customers’ specifications through its Custom Content team. Revenue from demand solutions is primarily recognized when the transfer of control occurs. For certain demand solutions, the Company generates revenue on a cost per lead basis and the transfer of control occurs at the point in time each lead is generated. Certain of the contracts within demand solutions are duration-based campaigns which, in the event of customer cancellation, provide the Company with an enforceable right to a proportional payment for the portion of the campaign based on services provided. Accordingly, revenue from duration-based campaigns are recognized using a time-based measure of progress, which the Company believes best depicts how it satisfies its performance obligations in these arrangements as control is continuously transferred throughout the contract period. Revenue from brand solutions is primarily recognized when the placement of the branding impression appears. Revenue from microsites is recognized ratably over the life of the contract. The Company’s offerings can be sold separately but the Company’s contracts often involve multiple offerings. The Company evaluates all contracts with customers at inception to determine whether they contain separate performance obligations. If the contract contains a single performance obligation, the entire transaction price is allocated to that performance obligation. If the contract contains multiple performance obligations, the transaction price is allocated to each performance obligation based on a relative standalone selling price. The Company has concluded that each of the performance obligations described above is distinct. 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. Disaggregation of Revenue The following table depicts the disaggregation of revenue according to categories consistent with how the Company evaluates its financial performance. International revenue consists of international geo-targeted campaigns, which are campaigns targeted at an audience of members outside of North America. Three Months Ended September 30, Percent Nine Months Ended September 30, Percent 2018 2017 Change 2018 2017 Change ($ in thousands) ($ in thousands) Total by Geographic Area: North America: North America IT Deal Alert $ 11,921 $ 9,953 20 % $ 32,316 $ 26,563 22 % North America Core 9,026 9,374 (4 )% 28,667 26,444 8 % Total North America 20,947 19,327 8 % 60,983 53,007 15 % International: International IT Deal Alert 4,043 3,451 17 % 11,309 8,869 28 % International Core 5,752 5,234 10 % 17,221 16,209 6 % Total International 9,795 8,685 13 % 28,530 25,078 14 % Total Online by Product: IT Deal Alert: North America IT Deal Alert $ 11,921 $ 9,953 20 % $ 32,316 $ 26,563 22 % International IT Deal Alert 4,043 3,451 17 % 11,309 8,869 28 % Total IT Deal Alert 15,964 13,404 19 % 43,625 35,432 23 % Core: North America Core 9,026 9,374 (4 )% 28,667 26,444 8 % International Core 5,752 5,234 10 % 17,221 16,209 6 % Total Core 14,778 14,608 1 % 45,888 42,653 8 % Other — — — — 168 (100 )% Total Revenues $ 30,742 $ 28,012 10 % $ 89,513 $ 78,253 14 % Deferred Revenue and Contract Balances 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. Deferred revenue is included in contract liabilities on the accompanying Consolidated Balance Sheets and was $2.3 million and $4.9 million at September 30, 2018 and December 31, 2017, respectively. 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 $2.9 million and $2.7 million at September 30, 2018 and December 31, 2017, respectively. During the first nine months of 2018, revenues of $3.4 million were recognized that had been included in the contract liabilities balance at December 31, 2017. Contract Liabilities Year-to-Date Activity (in thousands) Balance at December 31, 2017 $ 4,088 Deferral of revenue 4,576 Recognition of previously unearned revenue (3,389 ) Balance at September 30, 2018 $ 5,275 The Company reduced its accounts receivable by $3.5 million from $29.6 million to $26.1 million as of January 1, 2018 as a result of the adoption of Topic 606. There was a corresponding reduction of $3.5 million to its deferred revenue balance from $7.6 million to $4.1 million as of January 1, 2018 as a result of the adoption of Topic 606. Payment terms and conditions vary by contract type, although terms generally include requirement of payment within 30 to 90 days. In instances where the timing of revenue recognition differs from the timing of invoicing, the Company has determined its contracts do not contain a financing component as they are generally less than one year. The Company increased its allowance for doubtful accounts by $0.7 million and had direct write-offs of $0.5 million, net of recoveries, during the nine months ended September 30, 2018. The Company elected to apply the following practical expedients and exemptions: • The Company does not disclose the value of unsatisfied performance obligations for contracts with an original expected duration of one year or less. • The Company expenses, as incurred, contract costs consisting of sales commissions and sales bonuses because the amortization period of the contract asset that would have otherwise been recognized would have been one year or less.

Fair Value Measurements

Fair Value Measurements	9 Months Ended
	Sep. 30, 2018
Fair Value Disclosures [Abstract]
Fair Value Measurements	4. Fair Value Measurements The Company measures certain financial assets and liabilities at fair value on a recurring basis, including cash equivalents, short-term and long-term investments and contingent consideration. The fair value of these financial assets and liabilities was determined based on three levels of input as follows: • Level 1. Quoted prices in active markets for identical assets and liabilities; • Level 2. Observable inputs other than quoted prices in active markets; and • Level 3. Unobservable inputs. The fair value hierarchy of the Company’s financial assets and liabilities carried at fair value and measured on a recurring basis is as follows: Fair Value Measurements at Reporting Date Using September 30, 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) $ 12,480 $ 12,480 $ — $ — Short-term investments (2) 3,000 — 3,000 — Total assets $ 15,480 $ 12,480 $ 3,000 $ — Fair Value Measurements at Reporting Date Using December 31, 2017 Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Assets: Money market funds (1) $ 7,155 $ 7,155 $ — $ — Short-term investments (2) 7,650 — 7,650 — Long-term investments (2) 496 — 496 — Total assets $ 15,301 $ 7,155 $ 8,146 $ — (1) Included in cash and cash equivalents on the accompanying Consolidated Balance Sheets; valued at quoted market prices in active markets. (2) Short-term and long-term investments consist of municipal bonds, corporate bonds, U.S. Treasury securities, and government agency bonds; their fair value is calculated using an interest rate yield curve for similar instruments.

Cash, Cash Equivalents, and Inv

Cash, Cash Equivalents, and Investments	9 Months Ended
	Sep. 30, 2018
Cash And Cash Equivalents [Abstract]
Cash, Cash Equivalents, and Investments	5. 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: September 30, 2018 December 31, 2017 Cash $ 16,967 $ 18,811 Money market funds 12,480 7,155 Total cash and cash equivalents $ 29,447 $ 25,966 The Company’s short-term and long-term investments are accounted for as available for sale securities. These investments are recorded at fair value with the related unrealized gains and losses included in accumulated other comprehensive income, a component of stockholders’ equity, net of tax. The cumulative unrealized loss, net of taxes, was $4 and $17 as of September 30, 2018 and December 31, 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 Short-term and long-term investments consisted of the following: September 30, 2018 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Estimated Fair Value Short-term and long-term investments: U.S. Treasury securities $ 1,000 $ — $ (2 ) $ 998 Government agency bonds 500 — - 500 Municipal bonds 1,005 — (2 ) 1,003 Corporate bonds 500 — (1 ) 499 Total short-term and long-term investments $ 3,005 $ — $ (5 ) $ 3,000 December 31, 2017 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Estimated Fair Value Short-term and long-term investments: U.S. Treasury securities $ 1,499 $ — $ (6 ) $ 1,493 Government agency bonds 1,003 — (4 ) 999 Municipal bonds 4,169 — (14 ) 4,155 Corporate bonds 1,502 — (3 ) 1,499 Total short-term and long-term investments $ 8,173 $ — $ (27 ) $ 8,146 The Company had six 25 15 8.1 million The Company’s investments have contractual maturity dates that range from November 2018

Goodwill and Intangible Assets

Goodwill and Intangible Assets	9 Months Ended
	Sep. 30, 2018
Goodwill And Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets	6. Goodwill and Intangible Assets The following table summarizes the Company’s intangible assets, net: September 30, 2018 Estimated Useful Lives (Years) Gross Carrying Amount Accumulated Amortization Net Customer, affiliate and advertiser relationships 17 $ 7,128 $ (6,880 ) $ 248 Developed websites, technology and patents 10 1,519 (945 ) 574 Trademark, trade name and domain name 8 1,794 (1,733 ) 61 Proprietary user information database and internet traffic 5 1,180 (1,180 ) — Non-compete agreements 2 10 (1 ) 9 Total intangible assets $ 11,631 $ (10,739 ) $ 892 December 31, 2017 Estimated Useful Lives (Years) Gross Carrying Amount Accumulated Amortization Net Customer, affiliate and advertiser relationships 5 $ 6,938 $ (6,938 ) $ — Developed websites, technology and patents 10 1,342 (907 ) 435 Trademark, trade name and domain name 8 1,802 (1,731 ) 71 Proprietary user information database and internet traffic 5 1,202 (1,202 ) — Total intangible assets $ 11,284 $ (10,778 ) $ 506 Intangible assets are amortized over their estimated useful lives, which range from approximately two to 17 years, using methods of amortization that are expected to reflect the estimated pattern of economic use. The remaining amortization expense will be recognized over a weighted-average period of approximately 5.19 On August 1, 2018, the Company acquired certain of the operating assets associated with the business-to-business contact management provider Oceanos Marketing, Inc., for total consideration of $0.6 million. The The Company expects amortization expense of intangible assets to be as follows: Years Ending December 31: Amortization Expense 2018 (October 1 – December 31) $ 38 2019 135 2020 114 2021 130 2022 160 Thereafter 315 Total $ 892 Goodwill and indefinite-lived intangible assets are not amortized but are reviewed annually for impairment or more frequently if impairment indicators arise. The Company did not have any intangible assets other than goodwill with indefinite lives as of September 30, 2018 or December 31, 2017. There were no indications of impairment as of September 30, 2018, and the Company believes that, as of the balance sheet dates presented, none of the Company’s goodwill or intangible assets was impaired.

Net Income Per Common Share

Net Income Per Common Share	9 Months Ended
	Sep. 30, 2018
Earnings Per Share [Abstract]
Net Income Per Common Share	7. Net Income Per Common Share A reconciliation of the numerator and denominator used in the calculation of basic and diluted net income per common share is as follows: For the Three Months Ended For the Nine Months Ended September 30, September 30, 2018 2017 2018 2017 Numerator: Net income $ 3,769 $ 2,074 $ 10,283 $ 3,406 Denominator: Basic: Weighted average shares of common stock and vested, undelivered restricted stock units outstanding 27,827,296 27,554,586 27,627,083 27,521,244 Diluted: Weighted average shares of common stock and vested, undelivered restricted stock units outstanding 27,827,296 27,554,586 27,627,083 27,521,244 Effect of potentially dilutive shares (1) 936,730 765,799 1,083,798 754,043 Total weighted average shares of common stock and vested, undelivered restricted stock units outstanding and potentially dilutive shares 28,764,026 28,320,385 28,710,881 28,275,287 Net Income Per Share: Basic net income per share $ 0.14 $ 0.08 $ 0.37 $ 0.12 Diluted net income per share $ 0.13 $ 0.07 $ 0.36 $ 0.12 (1) In calculating diluted net income per share, 0.5 million

Term Loan Agreement

Term Loan Agreement	9 Months Ended
	Sep. 30, 2018
Debt Disclosure [Abstract]
Term Loan Agreement	8 . Term Loan Agreement On May 9, 2016, the Company entered into a Senior Secured Credit Facilities Credit Agreement for a term loan (the “Term Loan Agreement”). Under the Term Loan Agreement, the Company borrowed and received $50.0 million in aggregate principal amount pursuant to a five-year term loan (the “Term Loan”). The borrowings under the Term Loan Agreement are secured by a lien on substantially all of the assets of the Company, including a pledge of the stock of certain of its wholly-owned subsidiaries. As of September 30, 2018, the carrying amount of the Term Loan was $24.8 million. At the Company’s option, the Term Loan Agreement bears 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%. The applicable interest rate was 4.58% at September 30, 2018, representing LIBOR plus the applicable margin of 2.50%. Interest expense under the Term Loan Agreement was $1.0 million for each of the nine months ended September 30, 2018 and 2017. This includes non-cash interest expense of $84 and $81 for the nine months ended September 30, 2018 and 2017, respectively, related to the amortization of deferred issuance costs. During the nine months ended September 30, 2018, the Company made principal payments totaling $7.5 million. The Term Loan Agreement requires the Company to maintain compliance with certain covenants, including leverage and fixed charge coverage ratio covenants. At September 30, 2018, the Company was in compliance with all covenants under the Term Loan Agreement.

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2018
Commitments And Contingencies Disclosure [Abstract]
Commitments and Contingencies	9. Commitments and Contingencies Operating Leases The Company conducts its operations in leased office facilities under various noncancelable operating lease agreements that expire through December 2029. The lease for the Company’s Newton office contains rent concessions, which the Company is receiving over the life of the 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 $3.0 million and $3.4 million for the nine months ended September 30, 2018 and 2017, respectively. Future minimum lease payments under the Company’s noncancelable operating leases at September 30, 2018 are as follows: Years Ending December 31: Minimum Payments 2018 (October 1 – December 31) $ 1,081 2019 4,194 2020 3,637 2021 3,730 2022 3,397 Thereafter 24,664 Total $ 40,703 Litigation From time to time and in the ordinary course of business, the Company may be subject to various claims, charges, and litigation. At September 30, 2018 and December 31, 2017, the Company did not have any pending claims, charges, or litigation that it expects would have a material adverse effect on its consolidated financial position, results of operations, or cash flows .

Stock-Based Compensation

Stock-Based Compensation	9 Months Ended
	Sep. 30, 2018
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Stock-Based Compensation	10. 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 allowed 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 vested 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, t he 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. Approximately 8,224,334 shares were added to the 2007 Plan in accordance with the automatic annual increase and other provisions. 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. 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, approximately 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 1,014,761 shares of common stock that remain subject to outstanding stock grants under the 2017 Plan as of September 30, 2018. Accounting for Stock-Based Compensation The Company uses the Black-Scholes option pricing model to calculate the grant date fair value of an award. The 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 plans for the nine months ended September 30, 2018 is presented below: Year-to-Date Activity Options Outstanding Weighted- Average Exercise Price Per Share Weighted- Average Remaining Contractual Term in Years Aggregate Intrinsic Value Options outstanding at December 31, 2017 344,090 $ 6.41 Granted 20,000 $ 28.42 Exercised (168,090 ) $ 5.69 $ 2,627 Forfeited — Cancelled — Options outstanding at September 30, 2018 196,000 $ 9.27 4.35 $ 2,169 Options exercisable at September 30, 2018 176,000 $ 7.10 3.74 $ 2,169 Options vested or expected to vest at September 30, 2018 194,108 $ 9.09 4.29 $ 2,169 The total intrinsic value of options exercised (i.e. the difference between the market price at exercise and the price paid by the employee to exercise the options) was $2.6 million and $0.4 million during the nine months ended September 30, 2018 and September 30, 2017, respectively. The total amount of cash received from exercise of these options was approximately $1.0 million and $0.6 million during the nine months ended September 30, 2018 and 2017, respectively. Restricted Stock Units Restricted stock units 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 activity under the Company’s plans for the nine months ended September 30, 2018 is presented below: Year-to-Date Activity Shares Weighted- Average Grant Date Fair Value Per Share Aggregate Intrinsic Value Nonvested outstanding at December 31, 2017 1,414,000 $ 9.37 Granted 527,734 $ 28.03 Vested (693,473 ) $ 9.15 Forfeited (6,000 ) $ 9.57 Nonvested outstanding at September 30, 2018 1,242,261 $ 17.42 $ 23,976 There were 693,473 and 759,866 restricted stock units with a total grant-date fair value of $6.3 million and $6.2, that vested during the three months ended September 30, 2018 and 2017, respectively. As of September 30, 2018, there was $20.1 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 2.0

Stockholders' Equity

Stockholders' Equity	9 Months Ended
	Sep. 30, 2018
Equity [Abstract]
Stockholders' Equity	11. Stockholders’ Equity Reserved Common Stock As of September 30, 2018, the Company has reserved 7,840,711 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 2017 Plan. Common Stock Repurchase Program In June 2016, the Company announced that the Board had authorized a $20.0 million stock repurchase program (the “Repurchase Program”), whereby the Company was authorized to repurchase the Company’s common stock from time to time on the open market or in privately negotiated transactions at prices and in the manner determined by the Board. On May 5, 2017, the Company’s Board reauthorized the common stock repurchase program to allow the Company to use the remaining balance of the unused authorization under the Repurchase Program after its original expiration in June 2017. The reauthorized program allows the Company to repurchase its common stock from time to time on the open market or in privately negotiated transactions at prices and in the manner that may be determined by management. The reauthorized program has no time limit and may be suspended at any time. Additionally, the Company may establish, from time to time, 10b5-1 trading plans that will provide flexibility as it buys back its shares. Pursuant to the Repurchase Program, the Company repurchased 211,729 and 543,328 shares of common stock for an aggregate purchase price of $4.0 million and $5.2 million in the nine months ended September 30, 2018 and 2017, respectively. The Repurchase Program expired in August 2018 and the Company is announcing an additional stock repurchase program of $25.0 million over a two-year period beginning in November 2018. Repurchased shares are recorded under the cost method and are reflected as treasury stock in the accompanying Consolidated Balance Sheets. All share repurchases were funded with cash on hand.

Income Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2018
Income Tax Disclosure [Abstract]
Income Taxes	12. Income Taxes The Company’s effective income tax rate before discrete items was 27.4% and 44.7% for the nine months ended September 30, 2018 and 2017, respectively. The Company recognized income tax benefits for discrete items of $2.2 million and $0.8 million during the nine months ended September 30, 2018 and 2017, respectively. The Company measures its interim period tax expense using an estimated annual effective tax rate and adjustments for discrete taxable events that occur during the interim period. The estimated annual In December 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. Changes include, but are not limited to, a corporate tax rate decrease from 35% to 21% effective for tax years beginning after December 31, 2017 and a one-time transition tax on the mandatory deemed repatriation of cumulative foreign earnings as of December 31, 2017. On December 22, 2017, Staff Accounting Bulletin No. 118 was issued to address the application of U.S. 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 the first quarter of 2018, the Company obtained additional information affecting the provisional amount initially recorded for the transition tax for the three months ended December 31, 2017. As a result, the Company recorded an immaterial adjustment to the transition tax. Additional analysis of historical foreign earnings is necessary to complete the calculation of the transition tax. Any subsequent adjustment to the amount will be recorded to current tax expense in the quarter of 2018 when the analysis is complete. In the first quarter of 2017, the Company adopted ASU 2016-09, which requires that all excess tax benefits and tax deficiencies related to stock-based compensation be recognized as income tax expense or benefit in the Consolidated Statements of Income and Comprehensive Income in the period incurred. 0 As part of adopting ASU 2016-09, the Company recorded deferred tax assets for the federal and state excess tax benefit net operating losses in the amount of $0.2 million, with an offsetting entry to retained earnings.

Segment Information

Segment Information	9 Months Ended
	Sep. 30, 2018
Segment Reporting [Abstract]
Segment Information	13. Segment Information The Company views its operations and manages its business as one operating segment based on factors such as how the Company manages its operations and how its executive management team reviews results and makes decisions on how to allocate resources and assess performance. Geographic Data Net sales to unaffiliated customers by geographic area were as follows: Three Months Ended September 30, Nine Months Ended September 30, 2018 2017 2018 2017 United States $ 22,799 $ 20,971 $ 65,755 $ 56,955 United Kingdom 3,571 2,922 10,824 8,563 Other international 4,372 4,119 12,934 12,735 Total $ 30,742 $ 28,012 $ 89,513 $ 78,253 Long-lived assets by geographic area were as follows: September 30, 2018 December 31, 2017 United States $ 100,451 $ 98,683 International 5,130 5,402 Total $ 105,581 $ 104,085 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 are comprised of property and equipment, net; goodwill; and intangible assets, net.

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2018
Accounting Policies [Abstract]
Principles of Consolidation	Principles of Consolidation The accompanying consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries, TechTarget Securities Corporation (“TSC”), TechTarget Limited, TechTarget (HK) Limited (“TTGT HK”), TechTarget (Beijing) Information Technology Consulting Co. Ltd. (“TTGT Consulting”), 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. Additionally, through its wholly-owned subsidiaries, TTGT HK and TTGT Consulting, the Company effectively controls a variable interest entity (“VIE”), Keji Wangtuo Information Technology Co., Ltd., (“KWIT”), which was incorporated under the laws of the People’s Republic of China (“PRC”). In 2018, TechTarget began modifying its PRC operations and consolidating its activities with other TechTarget locations. 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. PRC laws and regulations prohibit or restrict foreign ownership of internet-related services and advertising businesses. To comply with these foreign ownership restrictions, the Company operates its websites and provides online advertising services in the PRC through KWIT. The Company entered into certain exclusive agreements with KWIT and its shareholders through TTGT HK, which obligated TTGT HK to absorb all of the risk of loss from KWIT’s activities and entitled TTGT HK to receive all of its residual returns. In addition, the Company entered into certain agreements with the authorized parties through TTGT HK, including Management and Consulting Services, Voting Proxy, Equity Pledge and Option Agreements. TTGT HK assigned all of its rights and obligations to the newly formed wholly foreign-owned enterprise, TTGT Consulting. TTGT Consulting is established and existing under the laws of the PRC, and is wholly owned by TTGT HK. Based on these contractual arrangements, the Company consolidates the financial results of KWIT as required by Accounting Standards Codification (“ASC”) subtopic 810-10, Consolidation: Overall, because the Company holds all the variable interests of KWIT through TTGT Consulting, which is the primary beneficiary of KWIT. Despite the lack of technical majority ownership, there exists a parent-subsidiary relationship between the Company and the VIE through the aforementioned agreements, whereby the equity holders of KWIT assigned all of their voting rights underlying their equity interest in KWIT to TTGT Consulting. In addition, through the other aforementioned agreements, the Company demonstrates its ability and intention to continue to exercise the ability to obtain substantially all of the profits and absorb all of the expected losses of KWIT. All significant intercompany accounts and transactions among the Company, its subsidiaries, and KWIT have been eliminated in consolidation.
Basis of Presentation	Basis of Presentation The accompanying unaudited consolidated financial statements have been prepared in accordance with accounting principles generally accepted (Generally Accepted Accounting Principles or “ ” “U.S.”
Reclassifications	Reclassifications Historically, the Company presented online revenues and online cost of revenues separately from events revenues and events cost of revenues. On the Consolidated Statements of Income and Comprehensive Income, the Company has combined these into a single line item for revenues and a single line item for cost of revenues, since the events product line, which phased out in the first quarter of 2017, generated immaterial revenues and cost of revenues for the nine months ended September 30, 2017 and no revenues or cost of revenues in the other periods presented on the Consolidated Statements of Income and Comprehensive Income. These reclassifications are not material and had no effect on the total reported revenues or cost of revenues. In addition, the Company historically presented depreciation expense and amortization expense as separate line items on the Consolidated Statements of Income and Comprehensive Income. Due to the immateriality of amortization expense, the Company has combined these expenses into a single line item. This reclassification had no effect on total 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, and income taxes. The Company reduces its accounts receivable for an allowance for doubtful accounts based on its best estimate of the amount of probable credit losses. 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 The Company generates substantially all of its revenues from the sale of targeted marketing and sales services and advertising campaigns utilizing, which it delivers via its network of websites and 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) i dentifying 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
Recent Accounting Pronouncements	Recent Accounting Pronouncements Recently Adopted Accounting Guidance In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606) (“Topic 606”), which supersedes the revenue recognition requirements in ASC 605, Revenue Recognition (“Topic 605”). Topic 606 is based on the principle that revenue is recognized to depict the transfer of goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. Topic 606 provides that an entity should apply a five-step approach for recognizing revenue, as described above in this Note 2 under “Revenue Recognition.” This guidance also requires additional disclosure about the nature, amount, timing and uncertainty of revenue and cash flows arising from customer contracts, including significant judgments and changes in judgments and assets recognized from costs incurred to obtain or fulfill a contract. The Company adopted the standard effective January 1, 2018, using the modified retrospective approach. Under this method, the Company evaluated contracts that were in effect at the beginning of fiscal 2018 as if those contracts had been accounted for under Topic 606. Under the modified retrospective approach, periods prior to the adoption date were not adjusted and continue to be reported in accordance with historical, pre-Topic 606 accounting. The adoption of the standard did not have a material effect on the Company’s consolidated financial statements, systems, processes, or internal controls. Accounting Guidance Not Yet Adopted 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 for 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 will adopt ASU 2016-02 in the first quarter of 2019 using the modified retrospective approach, and intends to elect the package of practical expedients permitted under the transition guidance. The Company anticipates that this standard will have a material impact on its financial position, primarily due to office space operating leases, for which the Company will be required to recognize the ROU assets and lease liabilities on its Consolidated Balance Sheets. 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. The Company is currently evaluating the impact that this standard will have on its consolidated financial statements and disclosures but does not expect that it will have a material impact. 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 option 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. The Company is currently evaluating the impact of this standard on its consolidated financial statements and disclosures but does not expect that it will have a material impact .

Revenues (Tables)

Revenues (Tables)	9 Months Ended
	Sep. 30, 2018
Revenue Recognition [Abstract]
Disaggregated Revenue	The following table depicts the disaggregation of revenue according to categories consistent with how the Company evaluates its financial performance. International revenue consists of international geo-targeted campaigns, which are campaigns targeted at an audience of members outside of North America. Three Months Ended September 30, Percent Nine Months Ended September 30, Percent 2018 2017 Change 2018 2017 Change ($ in thousands) ($ in thousands) Total by Geographic Area: North America: North America IT Deal Alert $ 11,921 $ 9,953 20 % $ 32,316 $ 26,563 22 % North America Core 9,026 9,374 (4 )% 28,667 26,444 8 % Total North America 20,947 19,327 8 % 60,983 53,007 15 % International: International IT Deal Alert 4,043 3,451 17 % 11,309 8,869 28 % International Core 5,752 5,234 10 % 17,221 16,209 6 % Total International 9,795 8,685 13 % 28,530 25,078 14 % Total Online by Product: IT Deal Alert: North America IT Deal Alert $ 11,921 $ 9,953 20 % $ 32,316 $ 26,563 22 % International IT Deal Alert 4,043 3,451 17 % 11,309 8,869 28 % Total IT Deal Alert 15,964 13,404 19 % 43,625 35,432 23 % Core: North America Core 9,026 9,374 (4 )% 28,667 26,444 8 % International Core 5,752 5,234 10 % 17,221 16,209 6 % Total Core 14,778 14,608 1 % 45,888 42,653 8 % Other — — — — 168 (100 )% Total Revenues $ 30,742 $ 28,012 10 % $ 89,513 $ 78,253 14 %
Schedule of Deferred Revenue Included in Contract Liabilities	Contract Liabilities Year-to-Date Activity (in thousands) Balance at December 31, 2017 $ 4,088 Deferral of revenue 4,576 Recognition of previously unearned revenue (3,389 ) Balance at September 30, 2018 $ 5,275

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	9 Months Ended
	Sep. 30, 2018
Fair Value Disclosures [Abstract]
Assets and Liabilities Carried at Fair Value and Measured on Recurring Basis	The fair value hierarchy of the Company’s financial assets and liabilities carried at fair value and measured on a recurring basis is as follows: Fair Value Measurements at Reporting Date Using September 30, 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) $ 12,480 $ 12,480 $ — $ — Short-term investments (2) 3,000 — 3,000 — Total assets $ 15,480 $ 12,480 $ 3,000 $ — Fair Value Measurements at Reporting Date Using December 31, 2017 Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Assets: Money market funds (1) $ 7,155 $ 7,155 $ — $ — Short-term investments (2) 7,650 — 7,650 — Long-term investments (2) 496 — 496 — Total assets $ 15,301 $ 7,155 $ 8,146 $ — (1) Included in cash and cash equivalents on the accompanying Consolidated Balance Sheets; valued at quoted market prices in active markets. (2) Short-term and long-term investments consist of municipal bonds, corporate bonds, U.S. Treasury securities, and government agency bonds; their fair value is calculated using an interest rate yield curve for similar instruments.

Cash, Cash Equivalents, and I_2

Cash, Cash Equivalents, and Investments (Tables)	9 Months Ended
	Sep. 30, 2018
Cash And Cash Equivalents [Abstract]
Cash and Cash Equivalents	Cash and cash equivalents consisted of the following: September 30, 2018 December 31, 2017 Cash $ 16,967 $ 18,811 Money market funds 12,480 7,155 Total cash and cash equivalents $ 29,447 $ 25,966
Short-term and Long-term Investments	Short-term and long-term investments consisted of the following: September 30, 2018 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Estimated Fair Value Short-term and long-term investments: U.S. Treasury securities $ 1,000 $ — $ (2 ) $ 998 Government agency bonds 500 — - 500 Municipal bonds 1,005 — (2 ) 1,003 Corporate bonds 500 — (1 ) 499 Total short-term and long-term investments $ 3,005 $ — $ (5 ) $ 3,000 December 31, 2017 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Estimated Fair Value Short-term and long-term investments: U.S. Treasury securities $ 1,499 $ — $ (6 ) $ 1,493 Government agency bonds 1,003 — (4 ) 999 Municipal bonds 4,169 — (14 ) 4,155 Corporate bonds 1,502 — (3 ) 1,499 Total short-term and long-term investments $ 8,173 $ — $ (27 ) $ 8,146

Goodwill and Intangible Assets

Goodwill and Intangible Assets (Tables)	9 Months Ended
	Sep. 30, 2018
Goodwill And Intangible Assets Disclosure [Abstract]
Summary of Intangible Assets	The following table summarizes the Company’s intangible assets, net: September 30, 2018 Estimated Useful Lives (Years) Gross Carrying Amount Accumulated Amortization Net Customer, affiliate and advertiser relationships 17 $ 7,128 $ (6,880 ) $ 248 Developed websites, technology and patents 10 1,519 (945 ) 574 Trademark, trade name and domain name 8 1,794 (1,733 ) 61 Proprietary user information database and internet traffic 5 1,180 (1,180 ) — Non-compete agreements 2 10 (1 ) 9 Total intangible assets $ 11,631 $ (10,739 ) $ 892 December 31, 2017 Estimated Useful Lives (Years) Gross Carrying Amount Accumulated Amortization Net Customer, affiliate and advertiser relationships 5 $ 6,938 $ (6,938 ) $ — Developed websites, technology and patents 10 1,342 (907 ) 435 Trademark, trade name and domain name 8 1,802 (1,731 ) 71 Proprietary user information database and internet traffic 5 1,202 (1,202 ) — Total intangible assets $ 11,284 $ (10,778 ) $ 506
Schedule of Amortization Expense of Intangible Assets	The Company expects amortization expense of intangible assets to be as follows: Years Ending December 31: Amortization Expense 2018 (October 1 – December 31) $ 38 2019 135 2020 114 2021 130 2022 160 Thereafter 315 Total $ 892

Net Income Per Common Share (Ta

Net Income Per Common Share (Tables)	9 Months Ended
	Sep. 30, 2018
Earnings Per Share [Abstract]
Reconciliation of Numerator and Denominator Used in Calculation of Basic and Diluted Net Income Per Common Share	A reconciliation of the numerator and denominator used in the calculation of basic and diluted net income per common share is as follows: For the Three Months Ended For the Nine Months Ended September 30, September 30, 2018 2017 2018 2017 Numerator: Net income $ 3,769 $ 2,074 $ 10,283 $ 3,406 Denominator: Basic: Weighted average shares of common stock and vested, undelivered restricted stock units outstanding 27,827,296 27,554,586 27,627,083 27,521,244 Diluted: Weighted average shares of common stock and vested, undelivered restricted stock units outstanding 27,827,296 27,554,586 27,627,083 27,521,244 Effect of potentially dilutive shares (1) 936,730 765,799 1,083,798 754,043 Total weighted average shares of common stock and vested, undelivered restricted stock units outstanding and potentially dilutive shares 28,764,026 28,320,385 28,710,881 28,275,287 Net Income Per Share: Basic net income per share $ 0.14 $ 0.08 $ 0.37 $ 0.12 Diluted net income per share $ 0.13 $ 0.07 $ 0.36 $ 0.12 (1) In calculating diluted net income per share, 0.5 million

Commitments and Contingencies (

Commitments and Contingencies (Tables)	9 Months Ended
	Sep. 30, 2018
Commitments And Contingencies Disclosure [Abstract]
Schedule of Future Minimum Lease Payments	Future minimum lease payments under the Company’s noncancelable operating leases at September 30, 2018 are as follows: Years Ending December 31: Minimum Payments 2018 (October 1 – December 31) $ 1,081 2019 4,194 2020 3,637 2021 3,730 2022 3,397 Thereafter 24,664 Total $ 40,703

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	9 Months Ended
	Sep. 30, 2018
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Summary of Stock Option Activity Under Company's Plans	A summary of the stock option activity under the Company’s plans for the nine months ended September 30, 2018 is presented below: Year-to-Date Activity Options Outstanding Weighted- Average Exercise Price Per Share Weighted- Average Remaining Contractual Term in Years Aggregate Intrinsic Value Options outstanding at December 31, 2017 344,090 $ 6.41 Granted 20,000 $ 28.42 Exercised (168,090 ) $ 5.69 $ 2,627 Forfeited — Cancelled — Options outstanding at September 30, 2018 196,000 $ 9.27 4.35 $ 2,169 Options exercisable at September 30, 2018 176,000 $ 7.10 3.74 $ 2,169 Options vested or expected to vest at September 30, 2018 194,108 $ 9.09 4.29 $ 2,169
Summary of Restricted Stock Unit Activity Under Company's Plans	Restricted stock units 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 activity under the Company’s plans for the nine months ended September 30, 2018 is presented below: Year-to-Date Activity Shares Weighted- Average Grant Date Fair Value Per Share Aggregate Intrinsic Value Nonvested outstanding at December 31, 2017 1,414,000 $ 9.37 Granted 527,734 $ 28.03 Vested (693,473 ) $ 9.15 Forfeited (6,000 ) $ 9.57 Nonvested outstanding at September 30, 2018 1,242,261 $ 17.42 $ 23,976

Segment Information (Tables)

Segment Information (Tables)	9 Months Ended
	Sep. 30, 2018
Segment Reporting [Abstract]
Net Sales to Unaffiliated Customers by Geographic Area	Net sales to unaffiliated customers by geographic area were as follows: Three Months Ended September 30, Nine Months Ended September 30, 2018 2017 2018 2017 United States $ 22,799 $ 20,971 $ 65,755 $ 56,955 United Kingdom 3,571 2,922 10,824 8,563 Other international 4,372 4,119 12,934 12,735 Total $ 30,742 $ 28,012 $ 89,513 $ 78,253
Long-Lived Assets by Geographic Area	Long-lived assets by geographic area were as follows: September 30, 2018 December 31, 2017 United States $ 100,451 $ 98,683 International 5,130 5,402 Total $ 105,581 $ 104,085

Organization and Operations - A

Organization and Operations - Additional Information (Detail)	9 Months Ended
	Sep. 30, 2018Website
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Number of websites	140

Revenues - Disaggregated Revenu

Revenues - Disaggregated Revenue (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Disaggregation Of Revenue [Line Items]
Total Revenues	$ 30,742	$ 28,012	$ 89,513	$ 78,253
Percentage of Change in Revenues	10.00%		14.00%
Core [Member]
Disaggregation Of Revenue [Line Items]
Total Revenues	$ 14,778	14,608	$ 45,888	42,653
Percentage of Change in Revenues	1.00%		8.00%
Online IT Deal Alert [Member]
Disaggregation Of Revenue [Line Items]
Total Revenues	$ 15,964	13,404	$ 43,625	35,432
Percentage of Change in Revenues	19.00%		23.00%
Other [Member]
Disaggregation Of Revenue [Line Items]
Total Revenues				168
Percentage of Change in Revenues			(100.00%)
North America [Member]
Disaggregation Of Revenue [Line Items]
Total Revenues	$ 20,947	19,327	$ 60,983	53,007
Percentage of Change in Revenues	8.00%		15.00%
North America [Member] | Core [Member]
Disaggregation Of Revenue [Line Items]
Total Revenues	$ 9,026	9,374	$ 28,667	26,444
Percentage of Change in Revenues	(4.00%)		8.00%
North America [Member] | IT Deal Alert [Member]
Disaggregation Of Revenue [Line Items]
Total Revenues	$ 11,921	9,953	$ 32,316	26,563
Percentage of Change in Revenues	20.00%		22.00%
North America [Member] | Core [Member]
Disaggregation Of Revenue [Line Items]
Total Revenues	$ 9,026	9,374	$ 28,667	26,444
Percentage of Change in Revenues	(4.00%)		8.00%
North America [Member] | Online IT Deal Alert [Member]
Disaggregation Of Revenue [Line Items]
Total Revenues	$ 11,921	9,953	$ 32,316	26,563
Percentage of Change in Revenues	20.00%		22.00%
International [Member]
Disaggregation Of Revenue [Line Items]
Total Revenues	$ 9,795	8,685	$ 28,530	25,078
Percentage of Change in Revenues	13.00%		14.00%
International [Member] | Core [Member]
Disaggregation Of Revenue [Line Items]
Total Revenues	$ 5,752	5,234	$ 17,221	16,209
Percentage of Change in Revenues	10.00%		6.00%
International [Member] | IT Deal Alert [Member]
Disaggregation Of Revenue [Line Items]
Total Revenues	$ 4,043	3,451	$ 11,309	8,869
Percentage of Change in Revenues	17.00%		28.00%
International [Member] | Core [Member]
Disaggregation Of Revenue [Line Items]
Total Revenues	$ 5,752	5,234	$ 17,221	16,209
Percentage of Change in Revenues	10.00%		6.00%
International [Member] | Online IT Deal Alert [Member]
Disaggregation Of Revenue [Line Items]
Total Revenues	$ 4,043	$ 3,451	$ 11,309	$ 8,869
Percentage of Change in Revenues	17.00%		28.00%

Revenues - Additional Informati

Revenues - Additional Information (Detail) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Jan. 01, 2018	Dec. 31, 2017
Deferred Revenue Arrangement [Line Items]
Revenues recognized	$ 3,400
Accounts receivable	27,621		$ 29,601
Deferred revenue	$ 5,275		7,598
Revenue recognition timing of invoicing period	1 year
Increase in allowance for doubtful accounts	$ 700
Write-offs, net of recoveries	$ 500
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
ASU 2014-09 [Member]
Deferred Revenue Arrangement [Line Items]
Accounts receivable		$ 26,100
Deferred revenue	$ 5,275	4,100	4,088
ASU 2014-09 [Member] | Impact of Adoption of ASC 606 [Member]
Deferred Revenue Arrangement [Line Items]
Accounts receivable		(3,500)
Deferred revenue		(3,500)
ASU 2014-09 [Member] | Calculated under Revenue Guidance in Effect before Topic 606 [Member]
Deferred Revenue Arrangement [Line Items]
Accounts receivable		29,600
Deferred revenue		$ 7,600
Contract Liabilities [Member]
Deferred Revenue Arrangement [Line Items]
Deferred revenue	2,300		4,900
Accrued sales incentives	$ 2,900		$ 2,700

Revenues - Schedule of Deferred

Revenues - Schedule of Deferred Revenue Included in Contract Liabilities (Detail) $ in Thousands	9 Months Ended
	Sep. 30, 2018USD ($)
Deferred Revenue Arrangement [Line Items]
Contract Liabilities, Balance at December 31, 2017	$ 7,598
Contract Liabilities, Balance at September 30, 2018	5,275
ASU 2014-09 [Member]
Deferred Revenue Arrangement [Line Items]
Contract Liabilities, Balance at December 31, 2017	4,088
Contract Liabilities, Deferral of revenue	4,576
Contract Liabilities, Recognition of previously unearned revenue	(3,389)
Contract Liabilities, Balance at September 30, 2018	$ 5,275

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	Sep. 30, 2018	Dec. 31, 2017
Assets:
Total assets	$ 15,480	$ 15,301
Money Market Funds [Member]
Assets:
Total assets	12,480	7,155
Short-Term Investments [Member]
Assets:
Total assets	3,000	7,650
Long-term Investments [Member]
Assets:
Total assets		496
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Assets:
Total assets	12,480	7,155
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Money Market Funds [Member]
Assets:
Total assets	12,480	7,155
Significant Other Observable Inputs (Level 2) [Member]
Assets:
Total assets	3,000	8,146
Significant Other Observable Inputs (Level 2) [Member] | Short-Term Investments [Member]
Assets:
Total assets	$ 3,000	7,650
Significant Other Observable Inputs (Level 2) [Member] | Long-term Investments [Member]
Assets:
Total assets		$ 496

Cash, Cash Equivalents, and I_3

Cash, Cash Equivalents, and Investments - Additional Information (Detail)	3 Months Ended		9 Months Ended
	Sep. 30, 2018USD ($)Security	Sep. 30, 2017USD ($)	Sep. 30, 2018USD ($)Security	Sep. 30, 2017USD ($)	Dec. 31, 2017USD ($)Security
Cash And Cash Equivalents [Abstract]
Liquid investments with maturities			3 months
Cumulative unrealized loss, net of taxes	$ 4,000		$ 4,000		$ 17,000
Realized gains or losses	$ 0	$ 0	$ 0	$ 0
Number of securities in unrealized loss position | Security	6		6		15
Unrealized loss available for sale securities, less than twenty months	$ 5,000		$ 5,000		$ 27,000
Unrealized loss available for sale securities fair value, less than twenty months	$ 3,000,000		$ 3,000,000		$ 8,100,000
Maximum duration of security			25 months
Municipal bonds maturity Start - date			Nov. 30, 2018
Municipal bonds maturity End - date			Jan. 31, 2019

Cash, Cash Equivalents, and I_4

Cash, Cash Equivalents, and Investments - Cash and Cash Equivalents (Detail) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Cash And Cash Equivalents [Abstract]
Cash	$ 16,967	$ 18,811
Money market funds	12,480	7,155
Total cash and cash equivalents	$ 29,447	$ 25,966

Cash, Cash Equivalents, and I_5

Cash, Cash Equivalents, and Investments - Short-term and Long-term Investments (Detail) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$ 3,005	$ 8,173
Gross Unrealized Losses	(5)	(27)
Estimated Fair Value	3,000	8,146
U.S. Treasury Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	1,000	1,499
Gross Unrealized Losses	(2)	(6)
Estimated Fair Value	998	1,493
US Government Agencies Debt Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	500	1,003
Gross Unrealized Losses		(4)
Estimated Fair Value	500	999
Municipal Bonds [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	1,005	4,169
Gross Unrealized Losses	(2)	(14)
Estimated Fair Value	1,003	4,155
Corporate Bonds [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	500	1,502
Gross Unrealized Losses	(1)	(3)
Estimated Fair Value	$ 499	$ 1,499

Goodwill and Intangible Asset_2

Goodwill and Intangible Assets - Summary of Intangible Assets (Detail) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2018	Dec. 31, 2017
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 11,631	$ 11,284
Accumulated Amortization	(10,739)	(10,778)
Total intangible assets	$ 892	$ 506
Customer, Affiliate and Advertiser Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated useful lives	17 years	5 years
Gross Carrying Amount	$ 7,128	$ 6,938
Accumulated Amortization	(6,880)	$ (6,938)
Total intangible assets	$ 248
Developed Websites, Technology and Patents [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated useful lives	10 years	10 years
Gross Carrying Amount	$ 1,519	$ 1,342
Accumulated Amortization	(945)	(907)
Total intangible assets	$ 574	$ 435
Trademarks, Trade Name and Domain Name [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated useful lives	8 years	8 years
Gross Carrying Amount	$ 1,794	$ 1,802
Accumulated Amortization	(1,733)	(1,731)
Total intangible assets	$ 61	$ 71
Proprietary User Information Database and Internet Traffic [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated useful lives	5 years	5 years
Gross Carrying Amount	$ 1,180	$ 1,202
Accumulated Amortization	$ (1,180)	$ (1,202)
Non-compete Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated useful lives	2 years
Gross Carrying Amount	$ 10
Accumulated Amortization	(1)
Total intangible assets	$ 9

Goodwill and Intangible Asset_3

Goodwill and Intangible Assets - Additional Information (Detail) - USD ($)	Aug. 01, 2018	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Goodwill And Intangible Assets [Line Items]
Remaining amortization period		5 years 2 months 8 days
Amortization of intangible assets		$ 100,000	$ 100,000
Write off of intangible assets		0
Intangible assets other than goodwill with indefinite lives		$ 0		$ 0
Oceanos Marketing, Inc [Member]
Goodwill And Intangible Assets [Line Items]
Total consideration	$ 600,000
Minimum [Member]
Goodwill And Intangible Assets [Line Items]
Estimated useful lives		2 years
Maximum [Member]
Goodwill And Intangible Assets [Line Items]
Estimated useful lives		17 years

Goodwill and Intangible Asset_4

Goodwill and Intangible Assets - Schedule of Amortization Expense of Intangible Assets (Detail) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Goodwill And Intangible Assets Disclosure [Abstract]
2018 (October 1 – December 31)	$ 38
2,019	135
2,020	114
2,021	130
2,022	160
Thereafter	315
Total intangible assets	$ 892	$ 506

Net Income Per Common Share - R

Net Income Per Common Share - Reconciliation of Numerator and Denominator Used in Calculation of Basic and Diluted Net Income Per Common Share (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Numerator:
Net income	$ 3,769	$ 2,074	$ 10,283	$ 3,406
Basic:
Weighted average shares of common stock and vested, undelivered restricted stock units outstanding	27,827,296	27,554,586	27,627,083	27,521,244
Diluted:
Weighted average shares of common stock and vested, undelivered restricted stock units outstanding	27,827,296	27,554,586	27,627,083	27,521,244
Effect of potentially dilutive shares	936,730	765,799	1,083,798	754,043
Total weighted average shares of common stock and vested, undelivered restricted stock units outstanding and potentially dilutive shares	28,764,026	28,320,385	28,710,881	28,275,287
Net Income Per Share:
Basic net income per share	$ 0.14	$ 0.08	$ 0.37	$ 0.12
Diluted net income per share	$ 0.13	$ 0.07	$ 0.36	$ 0.12

Net Income Per Common Share -_2

Net Income Per Common Share - Reconciliation of Numerator and Denominator Used in Calculation of Basic and Diluted Net Income Per Common Share (Parenthetical) (Detail) - shares shares in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Earnings Per Share [Abstract]
Outstanding stock options and unvested restricted stock units excluded from computation of diluted EPS	0.5	0.3	0.5	0.3

Term Loan Agreement - Additiona

Term Loan Agreement - Additional Information (Detail) - USD ($) $ in Thousands	May 09, 2016	Sep. 30, 2018	Sep. 30, 2017
Line Of Credit Facility [Line Items]
Amortization of deferred issuance costs		$ 84	$ 81
Term loan principal payment		$ 7,500	3,750
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%
Applicable interest rate on borrowings		4.58%
LIBOR margin		plus 2.50
Interest expense		$ 1,000	1,000
Amortization of deferred issuance costs		84	$ 81
Term loan principal payment		7,500
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%
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
Carrying amount of term loan		$ 24,800

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Detail) - USD ($)	9 Months Ended		12 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Commitments And Contingencies Disclosure [Abstract]
Total rent expense under the Company's leases	$ 3,000,000	$ 3,400,000
Charges, claims related to litigation	$ 0		$ 0

Commitments and Contingencies_2

Commitments and Contingencies - Schedule of Future Minimum Lease Payments (Detail) $ in Thousands	Sep. 30, 2018USD ($)
Commitments And Contingencies Disclosure [Abstract]
2018 (October 1 – December 31)	$ 1,081
2,019	4,194
2,020	3,637
2,021	3,730
2,022	3,397
Thereafter	24,664
Future minimum lease payments, Total	$ 40,703

Stock-Based Compensation - Addi

Stock-Based Compensation - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	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	196,000		196,000		344,090
Expected dividend yield			0.00%
Intrinsic value of options exercised			$ 2,627	$ 400
Cash received from exercise of options			956	$ 561
Employee service share-based compensation, nonvested units, compensation cost not yet recognized	$ 20,100		$ 20,100
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]
Stock options vested	693,473	759,866	693,473
Grant date fair value of stock options vested	$ 6,300	$ 6,200
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
Additional share authorized			8,224,334
New awards granted			0
Common stock outstanding under the plan	523,500		523,500
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	1,014,761		1,014,761
Plan effective date			Jun. 16, 2017
Minimum [Member] | Stock Option 2007 Plan [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Period of grants vested			3 years
Minimum [Member] | Stock Option 2017 Plan [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Period of grants vested			3 years
Maximum [Member] | Stock Option 2007 Plan [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Period of grants vested			4 years
Period of grants expired			10 years
Annual increase in reserved common stock			2.00%
Maximum [Member] | Stock Option 2017 Plan [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Period of grants expired			10 years

Stock-Based Compensation - Summ

Stock-Based Compensation - Summary of Stock Option Activity under Company's Plans (Detail) - USD ($) $ / shares in Units, $ in Thousands	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Options outstanding, beginning balance	344,090
Options Outstanding, Granted	20,000
Options Outstanding, Exercised	(168,090)
Options outstanding, ending balance	196,000
Options Outstanding, Options exercisable	176,000
Options Outstanding, Options vested or expected to vest	194,108
Weighted-Average Exercise Price Per Share, Options outstanding, beginning balance	$ 6.41
Weighted-Average Exercise Price Per Share, Granted	28.42
Weighted-Average Exercise Price Per Share, Exercised	5.69
Weighted- Average Exercise Price Per Share, Options outstanding, ending balance	9.27
Weighted- Average Exercise Price Per Share, Options exercisable	7.10
Weighted-Average Exercise Price Per Share, Options vested or expected to vest	$ 9.09
Weighted-Average Remaining Contractual Term in Years, Options outstanding	4 years 4 months 6 days
Weighted-Average Remaining Contractual Term in Years, Options exercisable	3 years 8 months 26 days
Weighted-Average Remaining Contractual Term in Years, Options vested or expected to vest	4 years 3 months 14 days
Aggregate Intrinsic Value, Exercised	$ 2,627	$ 400
Aggregate Intrinsic Value, Options outstanding	2,169
Aggregate Intrinsic Value, Options exercisable	2,169
Aggregate Intrinsic Value, Options vested or expected to vest	$ 2,169

Stock-Based Compensation - Su_2

Stock-Based Compensation - Summary of Restricted Stock Unit Activity Under Company's Plans (Detail) - Restricted Stock [Member] - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares, Nonvested outstanding, beginning balance			1,414,000
Shares, Granted			527,734
Shares, Vested	(693,473)	(759,866)	(693,473)
Shares, Forfeited			(6,000)
Shares, Nonvested outstanding, ending balance	1,242,261		1,242,261
Weighted-Average Grant Date Fair Value Per Share, Nonvested outstanding, beginning balance			$ 9.37
Weighted-Average Grant Date Fair Value Per Share, Granted			28.03
Weighted-Average Grant Date Fair Value Per Share, Vested			9.15
Weighted-Average Grant Date Fair Value Per Share, Forfeited			9.57
Weighted-Average Grant Date Fair Value Per Share, Nonvested outstanding, ending balance	$ 17.42		$ 17.42
Aggregate Intrinsic Value, Nonvested outstanding	$ 23,976		$ 23,976

Stockholders' Equity - Addition

Stockholders' Equity - Additional Information (Detail) - USD ($)	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Jun. 30, 2016
2017 Plan [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Common stock reserved	7,840,711
Stock Repurchase Program June 2016 [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	543,328
Common stock repurchase, amount	$ 4,000,000	$ 5,200,000
Stock repurchase program original expiration date	Jun. 30, 2017
Stock repurchase program expiration date	Aug. 31, 2018
Stock Repurchase Program November 2018 [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Common stock repurchase authorized amount	$ 25,000,000
Stock repurchase program, period in force	2 years

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($) $ in Millions	9 Months Ended		12 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Income Taxes [Line Items]
Effective income tax rate before discrete items	27.40%	44.70%
Income tax benefits recognized for discrete items	$ 2.2	$ 0.8
Corporate tax rate	21.00%		35.00%
ASU 2016-09 [Member]
Income Taxes [Line Items]
Income tax benefits recognized from excess deductions, net of shortfalls	$ 2.1	$ 0.5
Deferred tax assets for federal and state excess tax benefit, net operating losses	$ 0.2

Segment Information - Additiona

Segment Information - Additional Information (Detail)	9 Months Ended
	Sep. 30, 2018Segment
Segment Reporting [Abstract]
Number of operating segment	1

Segment Information - Net Sales

Segment Information - Net Sales to Unaffiliated Customers by Geographic Area (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales, Total	$ 30,742	$ 28,012	$ 89,513	$ 78,253
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales, Total	22,799	20,971	65,755	56,955
United Kingdom [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales, Total	3,571	2,922	10,824	8,563
Other International [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales, Total	$ 4,372	$ 4,119	$ 12,934	$ 12,735

Segment Information - Long-Live

Segment Information - Long-Lived Assets by Geographic Area (Detail) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets, Total	$ 105,581	$ 104,085
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets, Total	100,451	98,683
International [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets, Total	$ 5,130	$ 5,402