ChannelAdvisor (ECOM) 10-Q 9 Nov 21 2021 Q3 Quarterly report Financial data

Cover

Cover - shares	9 Months Ended
	Sep. 30, 2021	Oct. 29, 2021
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2021
Document Transition Report	false
Entity File Number	001-35940
Entity Registrant Name	CHANNELADVISOR CORPORATION
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	56-2257867
Entity Address, Address Line One	3025 Carrington Mill Boulevard
Entity Address, City or Town	Morrisville
Entity Address, State or Province	NC
Entity Address, Postal Zip Code	27560
City Area Code	919
Local Phone Number	228-4700
Title of 12(b) Security	Common Stock, $0.001 par value
Trading Symbol	ECOM
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding (in shares)		30,048,948
Amendment Flag	false
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q3
Entity Central Index Key	0001169652
Current Fiscal Year End Date	--12-31

CONDENSED CONSOLIDATED BALANCE

CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 97,019	$ 71,545
Accounts receivable, net of allowance of $250 and $417 as of September 30, 2021 and December 31, 2020, respectively	25,240	24,705
Prepaid expenses and other current assets	15,226	13,874
Total current assets	137,485	110,124
Operating lease right of use assets	5,284	8,141
Property and equipment, net	8,188	8,707
Goodwill	30,186	30,990
Intangible assets, net	3,331	4,155
Deferred contract costs, net of current portion	17,274	14,040
Long-term deferred tax assets, net	4,304	3,551
Other assets	826	953
Total assets	206,878	180,661
Current liabilities:
Accounts payable	613	158
Accrued expenses	17,612	14,008
Deferred revenue	28,425	22,819
Other current liabilities	5,682	6,029
Total current liabilities	52,332	43,014
Long-term operating leases, net of current portion	1,689	5,394
Other long-term liabilities	2,029	2,162
Total liabilities	56,050	50,570
Commitments and contingencies
Stockholders' equity:
Preferred stock, $0.001 par value, 5,000,000 shares authorized, no shares issued and outstanding as of September 30, 2021 and December 31, 2020	0	0
Common stock, $0.001 par value, 100,000,000 shares authorized, 30,048,948 and 29,020,424 shares issued and outstanding as of September 30, 2021 and December 31, 2020, respectively	30	29
Additional paid-in capital	297,251	288,842
Accumulated other comprehensive loss	(2,314)	(1,095)
Accumulated deficit	(144,139)	(157,685)
Total stockholders' equity	150,828	130,091
Total liabilities and stockholders' equity	$ 206,878	$ 180,661

CONDENSED CONSOLIDATED BALANC_2

CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Current assets:
Allowance for doubtful accounts receivable, current	$ 250	$ 417
Stockholders' equity:
Preferred stock, par value (in dollars per share)	$ 0.001	$ 0.001
Preferred stock, shares authorized (in shares)	5,000,000	5,000,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	100,000,000	100,000,000
Common stock, shares issued (in shares)	30,048,948	29,020,424
Common stock, shares outstanding (in shares)	30,048,948	29,020,424

UNAUDITED CONDENSED CONSOLIDATE

UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Revenue	$ 41,575	$ 35,285	$ 122,284	$ 104,760
Cost of revenue	10,100	7,691	28,041	21,807
Gross profit	31,475	27,594	94,243	82,953
Operating expenses:
Sales and marketing	15,482	13,477	45,273	38,436
Research and development	5,364	4,809	16,799	14,153
General and administrative	7,075	5,974	18,792	17,742
Total operating expenses	27,921	24,260	80,864	70,331
Income from operations	3,554	3,334	13,379	12,622
Other (expense) income:
Interest (expense) income, net	(30)	(1)	(96)	210
Other (expense) income, net	(29)	5	(164)	44
Total other (expense) income	(59)	4	(260)	254
Income before income taxes	3,495	3,338	13,119	12,876
Income tax (benefit) expense	(34)	(374)	(427)	171
Net income	$ 3,529	$ 3,712	$ 13,546	$ 12,705
Net income per share:
Basic (in dollars per share)	$ 0.12	$ 0.13	$ 0.46	$ 0.45
Diluted (in dollars per share)	$ 0.11	$ 0.12	$ 0.43	$ 0.43
Weighted average common shares outstanding:
Basic	29,931,173	28,802,310	29,665,439	28,485,547
Diluted	31,474,314	30,436,601	31,295,737	29,815,829

UNAUDITED CONDENSED CONSOLIDA_2

UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Statement of Comprehensive Income [Abstract]
Net income	$ 3,529	$ 3,712	$ 13,546	$ 12,705
Other comprehensive (loss) income:
Foreign currency translation adjustments	(1,157)	438	(1,219)	(63)
Total comprehensive income	$ 2,372	$ 4,150	$ 12,327	$ 12,642

UNAUDITED CONDENSED CONSOLIDA_3

UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Cash flows from operating activities
Net income	$ 13,546	$ 12,705
Adjustments to reconcile net income to cash and cash equivalents provided by operating activities:
Depreciation and amortization	5,064	4,655
Bad debt (recovery) expense	(99)	479
Stock-based compensation expense	9,739	7,732
Deferred income taxes	(875)	(61)
Other items, net	(1,982)	(617)
Changes in assets and liabilities:
Accounts receivable	(583)	343
Prepaid expenses and other assets	79	(917)
Deferred contract costs	(4,884)	(1,800)
Accounts payable and accrued expenses	86	3,404
Deferred revenue	6,388	62
Cash and cash equivalents provided by operating activities	26,479	25,985
Cash flows from investing activities
Acquisition, net of cash acquired	0	(8,787)
Purchases of property and equipment	(1,125)	(1,021)
Payment of software development costs	(2,577)	(2,283)
Cash and cash equivalents used in investing activities	(3,702)	(12,091)
Cash flows from financing activities
Repayment of finance leases	(12)	(1,418)
Proceeds from exercise of stock options	4,237	3,553
Payment of statutory tax withholding related to net-share settlement of restricted stock units	(1,363)	(1,299)
Payment of line of credit financing costs	0	(179)
Cash and cash equivalents provided by financing activities	2,862	657
Effect of currency exchange rate changes on cash and cash equivalents	(165)	21
Net increase in cash and cash equivalents	25,474	14,572
Cash and cash equivalents, beginning of period	71,545	51,785
Cash and cash equivalents, end of period	97,019	66,357
Supplemental disclosure of cash flow information
Cash paid for interest	69	109
Cash paid for income taxes, net	456	386
Supplemental disclosure of noncash investing and financing activities
Accrued statutory tax withholding related to net-share settlement of restricted stock units	4,204	1,889
Accrued capital expenditures	$ 45	$ 379

Description of the Business

Description of the Business	9 Months Ended
	Sep. 30, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
DESCRIPTION OF THE BUSINESS	DESCRIPTION OF THE BUSINESSChannelAdvisor Corporation ("ChannelAdvisor" or the "Company") was incorporated in the state of Delaware and capitalized in June 2001. The Company began operations in July 2001. ChannelAdvisor is a leading multichannel commerce platform whose mission is to connect and optimize the world's commerce. For over two decades, ChannelAdvisor has helped brands and retailers worldwide improve their online performance by expanding sales channels, connecting with consumers across the entire buying cycle, optimizing their operations for peak performance and providing actionable analytics to improve competitiveness. Thousands of customers depend on ChannelAdvisor to securely power their e-commerce operations on hundreds of channels, including Amazon, eBay, Facebook, Google and Walmart. The Company is headquartered in Morrisville, North Carolina and maintains sales, service, support and research and development offices in various domestic and international locations.

Significant Accounting Policies

Significant Accounting Policies	9 Months Ended
	Sep. 30, 2021
Accounting Policies [Abstract]
SIGNIFICANT ACCOUNTING POLICIES	SIGNIFICANT ACCOUNTING POLICIES Principles of Consolidation The accompanying condensed consolidated financial statements include the accounts of the Company and its wholly owned subsidiaries. All intercompany accounts and transactions have been eliminated in consolidation. Interim Condensed Consolidated Financial Information The accompanying condensed consolidated financial statements and footnotes have been prepared in accordance with generally accepted accounting principles in the United States of America, or U.S. GAAP, as contained in the Financial Accounting Standards Board, or FASB, Accounting Standards Codification, or ASC, for interim financial information. In the opinion of management, the interim financial information includes all adjustments of a normal recurring nature necessary for a fair presentation of financial position, the results of operations, comprehensive income and cash flows. The results of operations for the three and nine months ended September 30, 2021 are not necessarily indicative of the results for the full year or the results for any future periods, especially in light of the ongoing impacts, and potential future effects of, the COVID-19 pandemic on the Company’s business, operations and financial performance. These unaudited interim financial statements should be read in conjunction with the audited financial statements and related footnotes for the year ended December 31, 2020, or fiscal 2020, which are included in the Company's Annual Report on Form 10-K for fiscal 2020. There have been no material changes to the Company's significant accounting policies from those described in the footnotes to the audited financial statements contained in the Company's Annual Report on Form 10-K for fiscal 2020. Recent Accounting Pronouncements The Company has reviewed new accounting pronouncements that were issued during the nine months ended September 30, 2021 and does not believe that these pronouncements are applicable to the Company, or that they will have a material impact on its financial position or results of operations. Use of Estimates The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the amounts reported in the condensed consolidated financial statements and accompanying notes. Actual results could differ from those estimates. On an ongoing basis, the Company evaluates its estimates, including those related to the accounts receivable allowance, the useful lives of long-lived assets and other intangible assets, income taxes, assumptions used for purposes of determining stock-based compensation, leases, including estimating lease terms and extensions, and revenue recognition, including standalone selling prices for contracts with multiple performance obligations and the expected period of benefit for deferred contract costs, among others. Estimates and assumptions are also required to value assets acquired and liabilities assumed as well as contingent consideration, where applicable, in conjunction with business combinations. The Company bases its estimates on historical experience and on various other assumptions that it believes to be reasonable, the results of which form the basis for making judgments about the carrying value of assets and liabilities.

Stockholders' Equity

Stockholders' Equity	9 Months Ended
	Sep. 30, 2021
Stockholders' Equity Attributable to Parent [Abstract]
STOCKHOLDERS' EQUITY	STOCKHOLDERS' EQUITY The following tables summarize quarterly stockholders' equity activity for the nine-month periods ended September 30, 2021 and 2020 (in thousands, except number of shares): Quarterly Activity For The Nine Months Ended September 30, 2021 Common Stock Additional Accumulated Accumulated Total Shares Amount Balance, December 31, 2020 29,020,424 $ 29 $ 288,842 $ (1,095) $ (157,685) $ 130,091 Exercise of stock options and vesting of restricted stock units 802,270 1 3,586 — — 3,587 Stock-based compensation expense — — 3,048 — — 3,048 Statutory tax withholding related to net-share settlement of restricted stock units (89,842) — (2,061) — — (2,061) Net income — — — — 5,457 5,457 Foreign currency translation adjustments — — — (150) — (150) Balance, March 31, 2021 29,732,852 30 293,415 (1,245) (152,228) 139,972 Exercise of stock options and vesting of restricted stock units 146,164 — 136 — — 136 Stock-based compensation expense — — 3,576 — — 3,576 Statutory tax withholding related to net-share settlement of restricted stock units (48,409) — (1,177) — — (1,177) Net income — — — — 4,560 4,560 Foreign currency translation adjustments — — — 88 — 88 Balance, June 30, 2021 29,830,607 30 295,950 (1,157) (147,668) 147,155 Exercise of stock options and vesting of restricted stock units 314,529 — 515 — — 515 Stock-based compensation expense — — 3,115 — — 3,115 Statutory tax withholding related to net-share settlement of restricted stock units (96,188) — (2,329) — — (2,329) Net income — — — — 3,529 3,529 Foreign currency translation adjustments — — — (1,157) — (1,157) Balance, September 30, 2021 30,048,948 $ 30 $ 297,251 $ (2,314) $ (144,139) $ 150,828 Quarterly Activity For The Nine Months Ended September 30, 2020 Common Stock Additional Accumulated Accumulated Total Shares Amount Balance, December 31, 2019 28,077,469 $ 28 $ 278,111 $ (1,740) $ (176,750) $ 99,649 Cumulative effect of accounting change (1) — — — — 240 240 Exercise of stock options and vesting of restricted stock units 394,998 — 87 — — 87 Stock-based compensation expense — — 2,914 — — 2,914 Statutory tax withholding related to net-share settlement of restricted stock units (107,398) — (980) — — (980) Net income — — — — 2,007 2,007 Foreign currency translation adjustments — — — (800) — (800) Balance, March 31, 2020 28,365,069 28 280,132 (2,540) (174,503) 103,117 Exercise of stock options and vesting of restricted stock units 330,692 1 2,046 — — 2,047 Stock-based compensation expense — — 2,556 — — 2,556 Statutory tax withholding related to net-share settlement of restricted stock units (48,675) — (659) — — (659) Net income — — — — 6,986 6,986 Foreign currency translation adjustments — — — 299 — 299 Balance, June 30, 2020 28,647,086 29 284,075 (2,241) (167,517) 114,346 Exercise of stock options and vesting of restricted stock units 411,651 — 1,420 — — 1,420 Stock-based compensation expense — — 2,262 — — 2,262 Statutory tax withholding related to net-share settlement of restricted stock units (77,533) — (1,549) — — (1,549) Net income — — — — 3,712 3,712 Foreign currency translation adjustments — — — 438 — 438 Balance, September 30, 2020 28,981,204 $ 29 $ 286,208 $ (1,803) $ (163,805) $ 120,629 (1) The Company recorded a reduction to accumulated deficit at January 1, 2020 as a result of its adoption of ASU 2016-13, Financial Instruments - Credit Losses Share Repurchase Program On September 16, 2021, the Company announced that its Board of Directors approved a share repurchase program authorizing the repurchase of up to $25 million of the Company’s common stock through August 10, 2022. Repurchases may be made from time to time on the open market at prevailing prices or in negotiated transactions off the market. The share repurchase program does not obligate the Company to repurchase any particular amount of its shares. As of September 30, 2021, the Company had not repurchased any shares under this program.

Goodwill and Intangible Assets

Goodwill and Intangible Assets	9 Months Ended
	Sep. 30, 2021
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets	GOODWILL AND INTANGIBLE ASSETS The Company has acquired intangible assets in connection with its business acquisitions. These assets were recorded at their estimated fair values at the acquisition date and are being amortized over their respective estimated useful lives using the straight-line method. The estimated useful lives and amortization methodology used in computing amortization are as follows: Estimated Useful Life Amortization Methodology Customer relationships 7 years Straight-line Acquired technology 7 years Straight-line Amortization expense associated with the Company's intangible assets was $0.3 million for both the three months ended September 30, 2021 and 2020, and $0.8 million and $0.6 million for the nine months ended September 30, 2021 and 2020, respectively. There were no changes to the Company's goodwill during the nine months ended September 30, 2021, other than foreign currency translation adjustments.

Fair Value of Measurements

Fair Value of Measurements	9 Months Ended
	Sep. 30, 2021
Fair Value Disclosures [Abstract]
Fair Value of Measurements	FAIR VALUE OF MEASUREMENTS The Company uses a three-tier fair value hierarchy to classify and disclose all assets and liabilities measured at fair value on a recurring basis, as well as assets and liabilities measured at fair value on a non-recurring basis, in periods subsequent to their initial measurement. The hierarchy requires the Company to use observable inputs when available, and to minimize the use of unobservable inputs when determining fair value. The three tiers are defined as follows: • Level 1. Observable inputs based on unadjusted quoted prices in active markets for identical assets or liabilities; • Level 2. Inputs, other than quoted prices in active markets, that are observable either directly or indirectly; and • Level 3. Unobservable inputs for which there is little or no market data, which require the Company to develop its own assumptions. The carrying amounts of certain of the Company's financial instruments, including cash and cash equivalents, accounts receivable, accounts payable and accrued expenses approximate their respective fair values due to their short-term nature. The acquisition of Blueboard, a private limited company organized under the laws of France ("BlueBoard"), on July 23, 2020 included a contingent consideration arrangement that allows for payments of up to $3.0 million based upon the achievement of specified annual revenue targets through July 2023. Contingent consideration was measured at fair value at the acquisition date and is remeasured at fair value at each reporting date until the contingency is resolved. The fair value of the contingent consideration related to the BlueBoard acquisition was estimated utilizing Black-Scholes option pricing models in which various scenarios for achievement of the financial targets and resulting payouts are then discounted to determine the present value of the resulting liability. Key assumptions used in the measurement of fair value of contingent consideration include the forecasted revenue growth, revenue volatility and discount rates among other assumptions. Changes in any valuation inputs in isolation may result in a significantly lower or higher fair value measurement in the future. The fair value of the contingent consideration is recorded in "Other long-term liabilities" on the Company's consolidated balance sheet. Changes in the fair value of contingent consideration are recognized within general and administrative expenses in the Company’s consolidated statements of operations. The following table presents the changes to the Company's liability for acquisition-related contingent consideration for the nine months ended September 30, 2021 (in thousands): Balance as of December 31, 2020 $ 1,330 Change in fair value (1,325) Balance as of September 30, 2021 $ 5

Capitalized Software Developmen

Capitalized Software Development Costs	9 Months Ended
	Sep. 30, 2021
Property, Plant and Equipment [Abstract]
CAPITALIZED SOFTWARE DEVELOPMENT COSTS	CAPITALIZED SOFTWARE DEVELOPMENT COSTSCapitalized software development costs related to creating internally developed software and implementing software purchased for internal use are included in property and equipment in the accompanying condensed consolidated balance sheets. The Company capitalized software development costs of $0.9 million during both the three months ended September 30, 2021 and 2020, and $2.6 million and $2.3 million during the nine months ended September 30, 2021 and 2020, respectively. Amortization expense related to capitalized internally developed software was $0.7 million and $0.5 million for the three months ended September 30, 2021 and 2020, respectively, and $2.0 million and $1.3 million for the nine months ended September 30, 2021 and 2020, respectively, and is included in cost of revenue or general and administrative expense in the accompanying condensed consolidated statements of operations, depending upon the nature of the software development project. The net book value of capitalized internally developed software was $4.8 million and $4.2 million at September 30, 2021 and December 31, 2020, respectively.

Line of Credit

Line of Credit	9 Months Ended
	Sep. 30, 2021
Debt Disclosure [Abstract]
Line of Credit	LINE OF CREDITOn August 5, 2020, the Company established a $25.0 million revolving credit facility with a commercial lender that is available for use until August 5, 2023. Proceeds from borrowings under the credit facility may be used for working capital and general corporate purposes, including acquisitions. Up to $10.0 million of the facility is available for letters of credit. Additionally, the Company may request increases to the facility, subject to the consent of the lender, provided that the aggregate amount of such increases during the term do not exceed $10.0 million. Amounts borrowed under the facility will bear interest equal to either a base rate plus 2.25% per annum or LIBOR plus 3.25% per annum. The Company will pay a fee on all outstanding letters of credit at a rate of 3.25% per annum. In addition, the Company will pay a quarterly fee at a rate of 0.50% per annum on the undrawn portion of the facility. As collateral for extension of credit under the facility, the Company granted security interests in substantially all of its assets and those of one of its subsidiaries. The agreement for the credit facility contains customary representations and warranties and subjects the Company to affirmative and negative covenants. As of September 30, 2021, the Company had not drawn on, or issued any letters of credit under, the credit facility.

Revenue from Contracts with Cus

Revenue from Contracts with Customers	9 Months Ended
	Sep. 30, 2021
Revenue from Contract with Customer [Abstract]
REVENUE FROM CONTRACTS WITH CUSTOMERS	REVENUE FROM CONTRACTS WITH CUSTOMERS Revenue Recognition and Disaggregation of Revenue The Company derives the majority of its revenue from subscription fees paid for access to and usage of its SaaS solutions for a specified contract term. A customer typically pays a recurring subscription fee based on a specified minimum amount of gross merchandise value, or GMV, or advertising spend that the customer expects to process through the Company's platform. Subscription fees may also include implementation fees such as launch assistance and training fees. The remaining portion of a customer's fee is variable and is based on a specified percentage of GMV or advertising spend processed through the Company's platform in excess of the customer's specified minimum GMV or advertising spend amount. In most cases, the specified percentage of excess GMV or advertising spend on which the variable fee is based is fixed and does not vary depending on the amount of the excess. Subscription fees are billed in advance of the subscription term and are due in accordance with contract terms, which generally provide for payment within 30 days. Variable fees are subject to the same payment terms, although they are generally billed at the end of the period in which they are incurred. The Company also generates revenue from its solutions that allow brands to direct potential consumers from their websites and digital marketing campaigns to authorized resellers. The majority of the Company's contracts have a one year term. The Company's contractual arrangements include performance, termination and cancellation provisions, but do not provide for refunds. Customers do not have the contractual right to take possession of the Company's software at any time. Sales taxes collected from customers and remitted to government authorities are excluded from revenue. The Company's customers are categorized as follows: Retailers. The Company generally categorizes a customer as a retailer if it primarily focuses on selling third-party products. Brands. The Company generally categorizes a customer as a brand if it primarily focuses on selling its own proprietary products. Other. Other is primarily comprised of strategic partnerships. The following table summarizes revenue disaggregation by customer type for the three and nine months ended September 30, 2021 and 2020 (in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2021 2020 2021 2020 Retailers $ 21,737 $ 21,214 $ 66,030 $ 64,202 Brands 17,470 12,080 47,675 33,860 Other 2,368 1,991 8,579 6,698 $ 41,575 $ 35,285 $ 122,284 $ 104,760 Contracts with Multiple Performance Obligations Customers may elect to purchase a subscription to multiple modules, multiple modules with multiple service levels, or, for certain of the Company's solutions, multiple brands or geographies. The Company evaluates such contracts to determine whether the services to be provided are distinct and accordingly should be accounted for as separate performance obligations. If the Company determines that a contract has multiple performance obligations, the transaction price, which is the total price of the contract, is allocated to each performance obligation based on a relative standalone selling price method. The Company estimates standalone selling price based on observable prices in past transactions for which the product offering subject to the performance obligation has been sold separately. As the performance obligations are satisfied, revenue is recognized as discussed above. Transaction Price Allocated to Future Performance Obligations As the Company typically enters into contracts with customers for a twelve-month subscription term, a substantial majority of its performance obligations that have not yet been satisfied as of September 30, 2021 are part of a contract that has an original expected duration of one year or less. For contracts with an original expected duration of greater than one year, the aggregate transaction price allocated to the unsatisfied performance obligations was $40.0 million as of September 30, 2021, of which $23.3 million is expected to be recognized as revenue over the next twelve months. Deferred Revenue Deferred revenue generally represents the unearned portion of subscription fees. Deferred revenue is recorded when fees are invoiced in advance of performance. Deferred amounts are generally recognized within one year. Deferred revenue is included in the accompanying condensed consolidated balance sheets under "Total current liabilities," net of any long-term portion that is included in "Other long-term liabilities." The following table summarizes deferred revenue activity for the nine months ended September 30, 2021 (in thousands): Balance, beginning of period Net additions Revenue recognized from deferred revenue Balance, end of period Deferred revenue $ 23,301 102,770 (96,523) $ 29,548 Of the $122.3 million of revenue recognized in the nine months ended September 30, 2021, $20.1 million was included in deferred revenue at January 1, 2021. Costs to Obtain Contracts The Company capitalizes sales commissions and a portion of other incentive compensation costs that are directly related to obtaining customer contracts and that would not have been incurred if the contract had not been obtained. These costs are included in the accompanying condensed consolidated balance sheets and are classified as "Prepaid expenses and other current assets," net of any long-term portion that is included in "Deferred contract costs, net of current portion." As of September 30, 2021, $8.7 million was included in "Prepaid expenses and other current assets." Deferred contract costs are amortized to sales and marketing expense over the expected period of benefit, which the Company has determined to be five years based on the estimated customer relationship period. The following table summarizes deferred contract cost activity for the nine months ended September 30, 2021 (in thousands): Balance, beginning of period Additions Amortized costs (1) Balance, end of period Deferred contract costs $ 21,333 11,366 (6,719) $ 25,980 (1) Includes contract costs amortized to sales and marketing expense during the period and the impact from foreign currency exchange rate fluctuations.

Stock-Based Compensation

Stock-Based Compensation	9 Months Ended
	Sep. 30, 2021
Share-based Payment Arrangement [Abstract]
STOCK-BASED COMPENSATION	STOCK-BASED COMPENSATIONIn February 2020, the Company’s Compensation Committee implemented changes to the equity compensation program for the Company’s executive officers. Beginning in 2020, 50% of each executive's equity awards were granted in the form of performance-based vesting restricted stock units, or PSUs, that are eligible for vesting only if the Company achieves pre-defined targets set by the Compensation Committee for the Company’s combined year-over-year revenue growth and adjusted earnings before interest, tax, depreciation and amortization, or EBITDA, margin over a two-year measurement period, subject to the executive’s continued service with the Company. For any PSUs granted in 2020 to vest, revenue growth must be positive over the performance period. Vesting of the PSU awards is based on a sliding scale of actual performance against the pre-defined goals. The sliding scale ranges from zero vesting and forfeiture of the awards if the Company does not achieve the performance threshold, to an award of up to 150% and 200% of the target number of awards for fiscal 2020 and 2021 grants, respectively, if the pre-defined maximum performance is achieved. As soon as reasonably practicable after the completion of the performance period, the Compensation Committee will determine the level of attainment of the performance goal and if the performance threshold is achieved, on the second anniversary of the grant date, subject to the executive’s continued service as of that date, 50% of the earned PSU awards will vest and, on the third anniversary of the grant date, the remaining 50% of earned PSU awards will vest, subject to the executive’s continued service as of that date. The Committee may make adjustments to the manner in which the achievement is determined as it deems equitable and appropriate to exclude the effect of unusual, non-recurring or infrequent matters, transactions or events affecting the Company or its consolidated financial statements; changes in accounting principles, practices or policies or in tax laws or other laws or requirements; or other similar events, matters or changed circumstances. Each adjustment, if any, shall be made solely for the purpose of maintaining the intended economics of the award in light of changed circumstances to prevent the dilution or enlargement of the executive’s rights with respect to the PSUs. The fair value of the PSU awards is determined using the Company’s stock price on the grant date. These awards are equity classified and will be expensed over the requisite service period based on the extent to which achievement of the performance metrics is probable. The Company recognizes stock-based compensation expense using the accelerated attribution method, net of estimated forfeitures, in which compensation cost for each vesting tranche in an award is recognized ratably from the service inception date to the vesting date for that tranche. Stock-based compensation expense is included in the following line items in the accompanying condensed consolidated statements of operations for the three and nine months ended September 30, 2021 and 2020 (in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2021 2020 2021 2020 Cost of revenue $ 169 $ 203 $ 665 $ 760 Sales and marketing 928 544 2,744 2,061 Research and development 567 485 1,869 1,708 General and administrative 1,451 1,030 4,461 3,203 Total stock-based compensation expense $ 3,115 $ 2,262 $ 9,739 $ 7,732 During the nine months ended September 30, 2021, the Company granted the following share-based awards: Number of Shares Underlying Grant Weighted Average Grant Date Fair Value Restricted stock units 449,506 $ 23.39 Performance stock units 71,932 $ 23.88 Total share-based awards 521,438

Net Income (Loss) Per Share

Net Income (Loss) Per Share	9 Months Ended
	Sep. 30, 2021
Earnings Per Share [Abstract]
NET LOSS PER SHARE	NET INCOME PER SHAREBasic net income per share is calculated by dividing net income by the weighted-average number of shares of common stock outstanding for the period. Diluted net income per share is calculated giving effect to all potentially dilutive shares of common stock, including stock options and restricted stock units. The dilutive effect of outstanding awards is reflected in diluted earnings per share by application of the treasury stock method. The following table summarizes the calculation of basic and diluted net income per share (in thousands, except share and per share data): Three Months Ended September 30, Nine Months Ended September 30, 2021 2020 2021 2020 Basic: Net income $ 3,529 $ 3,712 $ 13,546 $ 12,705 Weighted average common shares outstanding, basic 29,931,173 28,802,310 29,665,439 28,485,547 Basic net income per share $ 0.12 $ 0.13 $ 0.46 $ 0.45 Diluted: Net income $ 3,529 $ 3,712 $ 13,546 $ 12,705 Weighted average common shares outstanding, basic 29,931,173 28,802,310 29,665,439 28,485,547 Dilutive effect of: Stock options 575,293 571,884 595,938 334,565 Unvested restricted stock units 967,848 1,062,407 1,034,360 995,717 Weighted average common shares outstanding, diluted 31,474,314 30,436,601 31,295,737 29,815,829 Diluted net income per share $ 0.11 $ 0.12 $ 0.43 $ 0.43 The following equity instruments have been excluded from the calculation of diluted net income per share because the effect is anti-dilutive: Three Months Ended September 30, Nine Months Ended September 30, 2021 2020 2021 2020 Stock options 21,632 145,279 22,235 528,777 Restricted stock units 5,291 19,322 231,680 26,397

Income Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2021
Income Tax Disclosure [Abstract]
Income Taxes	INCOME TAXES At the end of each interim reporting period, the Company estimates its effective income tax rate expected to be applicable for the full year. This estimate is used to determine the income tax provision or benefit on a year-to-date basis and may change in subsequent interim periods. The Company's effective tax rate was (1.0)% and (11.2)% for the three months ended September 30, 2021 and 2020, respectively, and (3.3)% and 1.3% for the nine months ended September 30, 2021 and 2020, respectively. The tax benefit and expense for each of the periods was based on U.S. federal, state, local and foreign income taxes. The Company’s effective tax rate for these periods is lower than the U.S. federal statutory rate of 21% primarily due to the utilization of operating loss carryforwards which are subject to a valuation allowance. As a result of uncertainties relating to the timing and sufficiency of future taxable income in certain tax jurisdictions in which the Company operates, the Company cannot recognize the tax benefit of operating loss carryforwards generated in those jurisdictions until the operating loss carryforwards are utilized. The increase in the effective tax rate for the three months ended September 30, 2021 compared with the same period in the prior year was primarily due to the revaluation of the Company’s UK deferred tax assets resulting from an increase in the UK statutory tax rate from 17% to 19% enacted during the third quarter of 2020. The decrease in the effective tax rate for the nine months ended September 30, 2021 compared with the same period in the prior year was primarily due to the revaluation of the Company's UK deferred tax assets resulting from the enactment of an additional increase in the UK statutory tax rate from 19% to 25% during the second quarter of 2021, as well as an increase in U.S. state income tax benefits resulting from tax deductions for stock-based compensation. The American Rescue Plan Act, or ARP Act, was enacted on March 11, 2021. The ARP Act includes provisions on taxes, health care, unemployment benefits, direct payments, state and local funding and other issues. Included in the tax provisions was an expansion of the limitations on the deduction of excessive executive compensation. The Coronavirus, Aid, Relief and Economic Security Act, or CARES Act, was enacted on March 27, 2020. The CARES Act includes both income tax and non-income tax measures to assist companies. Some of the key income tax-related provisions of the CARES Act include the elimination of the 80% limitation on certain net operating loss carryforwards and allowing net operating loss carrybacks, an increase to the interest expense deduction limit, passage of technical corrections to the Tax Cuts and Jobs Act of 2017, and acceleration of the Alternative Minimum Tax Credit refund. In addition to the income tax provisions, the ARP Act and CARES Act include non-income tax provisions, such as loan programs, penalty and interest-free deferral of certain tax payments, and payroll tax credits. The Company has decided not to apply for any of the loan programs in either Act. The Company is currently benefiting from penalty and interest-free tax payment deferral of the 2020 U.S. Social Security tax payments as provided in the CARES Act. The Company is also monitoring COVID-19 tax relief developments in U.S. states and foreign jurisdictions where the Company has operations. The corporate tax changes in the ARP Act and CARES Act had an insignificant impact on the income tax provision for the three and nine months ended September 30, 2021. The Company recorded a valuation allowance against all of its U.S. deferred tax assets as of September 30, 2021. The Company intends to continue maintaining a full valuation allowance on its U.S. deferred tax assets until there is sufficient evidence to support the reversal of all or some portion of the allowance. However, given its current earnings and anticipated future earnings, there is a reasonable possibility that within the next 12 months, sufficient positive evidence may become available to allow it to reach a conclusion that a portion of the valuation allowance will no longer be needed. Release of the valuation allowance would result in the recognition of certain deferred tax assets and a decrease to income tax expense for the period the release is recorded. However, the Company is currently unable to determine the exact timing and amount of the valuation allowance release.

Segment and Geographic Informat

Segment and Geographic Information	9 Months Ended
	Sep. 30, 2021
Segment Reporting [Abstract]
SEGMENT AND GEOGRAPHIC INFORMATION	SEGMENT AND GEOGRAPHIC INFORMATION Operating segments are defined as components of an enterprise for which discrete financial information is available that is evaluated regularly by the chief operating decision maker, or CODM, for purposes of allocating resources and evaluating financial performance. The Company's CODM reviews financial information presented on a consolidated basis for purposes of allocating resources and evaluating financial performance. As such, the Company's operations constitute a single operating segment and one reportable segment. Substantially all assets were held in the United States during the nine months ended September 30, 2021 and the year ended December 31, 2020. The Company categorizes domestic and international revenue from customers based on their billing address. The following table summarizes revenue by geography for the three and nine months ended September 30, 2021 and 2020 (in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2021 2020 2021 2020 Domestic $ 29,199 $ 26,135 $ 87,181 $ 78,571 International 12,376 9,150 35,103 26,189 Total revenue $ 41,575 $ 35,285 $ 122,284 $ 104,760

Significant Accounting Polici_2

Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2021
Accounting Policies [Abstract]
Principles of Consolidation	The accompanying condensed consolidated financial statements include the accounts of the Company and its wholly owned subsidiaries. All intercompany accounts and transactions have been eliminated in consolidation.
Interim Condensed Consolidated Financial Information	The accompanying condensed consolidated financial statements and footnotes have been prepared in accordance with generally accepted accounting principles in the United States of America, or U.S. GAAP, as contained in the Financial Accounting Standards Board, or FASB, Accounting Standards Codification, or ASC, for interim financial information. In the opinion of management, the interim financial information includes all adjustments of a normal recurring nature necessary for a fair presentation of financial position, the results of operations, comprehensive income and cash flows. The results of operations for the three and nine months ended September 30, 2021 are not necessarily indicative of the results for the full year or the results for any future periods, especially in light of the ongoing impacts, and potential future effects of, the COVID-19 pandemic on the Company’s business, operations and financial performance. These unaudited interim financial statements should be read in conjunction with the audited financial statements and related footnotes for the year ended December 31, 2020, or fiscal 2020, which are included in the Company's Annual Report on Form 10-K for fiscal 2020. There have been no material changes to the Company's significant accounting policies from those described in the footnotes to the audited financial statements contained in the Company's Annual Report on Form 10-K for fiscal 2020.
Recent Accounting Pronouncements	The Company has reviewed new accounting pronouncements that were issued during the nine months ended September 30, 2021 and does not believe that these pronouncements are applicable to the Company, or that they will have a material impact on its financial position or results of operations.
Use of Estimates	The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the amounts reported in the condensed consolidated financial statements and accompanying notes. Actual results could differ from those estimates. On an ongoing basis, the Company evaluates its estimates, including those related to the accounts receivable allowance, the useful lives of long-lived assets and other intangible assets, income taxes, assumptions used for purposes of determining stock-based compensation, leases, including estimating lease terms and extensions, and revenue recognition, including standalone selling prices for contracts with multiple performance obligations and the expected period of benefit for deferred contract costs, among others. Estimates and assumptions are also required to value assets acquired and liabilities assumed as well as contingent consideration, where applicable, in conjunction with business combinations. The Company bases its estimates on historical experience and on various other assumptions that it believes to be reasonable, the results of which form the basis for making judgments about the carrying value of assets and liabilities.
Fair Value Measurement	The Company uses a three-tier fair value hierarchy to classify and disclose all assets and liabilities measured at fair value on a recurring basis, as well as assets and liabilities measured at fair value on a non-recurring basis, in periods subsequent to their initial measurement. The hierarchy requires the Company to use observable inputs when available, and to minimize the use of unobservable inputs when determining fair value. The three tiers are defined as follows: • Level 1. Observable inputs based on unadjusted quoted prices in active markets for identical assets or liabilities; • Level 2. Inputs, other than quoted prices in active markets, that are observable either directly or indirectly; and • Level 3. Unobservable inputs for which there is little or no market data, which require the Company to develop its own assumptions. The carrying amounts of certain of the Company's financial instruments, including cash and cash equivalents, accounts receivable, accounts payable and accrued expenses approximate their respective fair values due to their short-term nature.
Deferred Revenue	Deferred revenue generally represents the unearned portion of subscription fees. Deferred revenue is recorded when fees are invoiced in advance of performance. Deferred amounts are generally recognized within one year. Deferred revenue is included in the accompanying condensed consolidated balance sheets under "Total current liabilities," net of any long-term portion that is included in "Other long-term liabilities."
Costs to Obtain Contracts	The Company capitalizes sales commissions and a portion of other incentive compensation costs that are directly related to obtaining customer contracts and that would not have been incurred if the contract had not been obtained. These costs are included in the accompanying condensed consolidated balance sheets and are classified as "Prepaid expenses and other current assets," net of any long-term portion that is included in "Deferred contract costs, net of current portion." As of September 30, 2021, $8.7 million was included in "Prepaid expenses and other current assets." Deferred contract costs are amortized to sales and marketing expense over the expected period of benefit, which the Company has determined to be five years based on the estimated customer relationship period.
Stock-Based Compensation	The Company recognizes stock-based compensation expense using the accelerated attribution method, net of estimated forfeitures, in which compensation cost for each vesting tranche in an award is recognized ratably from the service inception date to the vesting date for that tranche.
Earnings Per Share	Basic net income per share is calculated by dividing net income by the weighted-average number of shares of common stock outstanding for the period. Diluted net income per share is calculated giving effect to all potentially dilutive shares of common stock, including stock options and restricted stock units. The dilutive effect of outstanding awards is reflected in diluted earnings per share by application of the treasury stock method.
Income Taxes	At the end of each interim reporting period, the Company estimates its effective income tax rate expected to be applicable for the full year. This estimate is used to determine the income tax provision or benefit on a year-to-date basis and may change in subsequent interim periods.

Stockholders' Equity (Tables)

Stockholders' Equity (Tables)	9 Months Ended
	Sep. 30, 2021
Stockholders' Equity Attributable to Parent [Abstract]
Schedule of Stockholders Equity	The following tables summarize quarterly stockholders' equity activity for the nine-month periods ended September 30, 2021 and 2020 (in thousands, except number of shares): Quarterly Activity For The Nine Months Ended September 30, 2021 Common Stock Additional Accumulated Accumulated Total Shares Amount Balance, December 31, 2020 29,020,424 $ 29 $ 288,842 $ (1,095) $ (157,685) $ 130,091 Exercise of stock options and vesting of restricted stock units 802,270 1 3,586 — — 3,587 Stock-based compensation expense — — 3,048 — — 3,048 Statutory tax withholding related to net-share settlement of restricted stock units (89,842) — (2,061) — — (2,061) Net income — — — — 5,457 5,457 Foreign currency translation adjustments — — — (150) — (150) Balance, March 31, 2021 29,732,852 30 293,415 (1,245) (152,228) 139,972 Exercise of stock options and vesting of restricted stock units 146,164 — 136 — — 136 Stock-based compensation expense — — 3,576 — — 3,576 Statutory tax withholding related to net-share settlement of restricted stock units (48,409) — (1,177) — — (1,177) Net income — — — — 4,560 4,560 Foreign currency translation adjustments — — — 88 — 88 Balance, June 30, 2021 29,830,607 30 295,950 (1,157) (147,668) 147,155 Exercise of stock options and vesting of restricted stock units 314,529 — 515 — — 515 Stock-based compensation expense — — 3,115 — — 3,115 Statutory tax withholding related to net-share settlement of restricted stock units (96,188) — (2,329) — — (2,329) Net income — — — — 3,529 3,529 Foreign currency translation adjustments — — — (1,157) — (1,157) Balance, September 30, 2021 30,048,948 $ 30 $ 297,251 $ (2,314) $ (144,139) $ 150,828 Quarterly Activity For The Nine Months Ended September 30, 2020 Common Stock Additional Accumulated Accumulated Total Shares Amount Balance, December 31, 2019 28,077,469 $ 28 $ 278,111 $ (1,740) $ (176,750) $ 99,649 Cumulative effect of accounting change (1) — — — — 240 240 Exercise of stock options and vesting of restricted stock units 394,998 — 87 — — 87 Stock-based compensation expense — — 2,914 — — 2,914 Statutory tax withholding related to net-share settlement of restricted stock units (107,398) — (980) — — (980) Net income — — — — 2,007 2,007 Foreign currency translation adjustments — — — (800) — (800) Balance, March 31, 2020 28,365,069 28 280,132 (2,540) (174,503) 103,117 Exercise of stock options and vesting of restricted stock units 330,692 1 2,046 — — 2,047 Stock-based compensation expense — — 2,556 — — 2,556 Statutory tax withholding related to net-share settlement of restricted stock units (48,675) — (659) — — (659) Net income — — — — 6,986 6,986 Foreign currency translation adjustments — — — 299 — 299 Balance, June 30, 2020 28,647,086 29 284,075 (2,241) (167,517) 114,346 Exercise of stock options and vesting of restricted stock units 411,651 — 1,420 — — 1,420 Stock-based compensation expense — — 2,262 — — 2,262 Statutory tax withholding related to net-share settlement of restricted stock units (77,533) — (1,549) — — (1,549) Net income — — — — 3,712 3,712 Foreign currency translation adjustments — — — 438 — 438 Balance, September 30, 2020 28,981,204 $ 29 $ 286,208 $ (1,803) $ (163,805) $ 120,629 (1) The Company recorded a reduction to accumulated deficit at January 1, 2020 as a result of its adoption of ASU 2016-13, Financial Instruments - Credit Losses

Goodwill and Intangible Assets

Goodwill and Intangible Assets (Tables)	9 Months Ended
	Sep. 30, 2021
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Finite-Lived Intangible Assets	The estimated useful lives and amortization methodology used in computing amortization are as follows: Estimated Useful Life Amortization Methodology Customer relationships 7 years Straight-line Acquired technology 7 years Straight-line

Fair Value Measures and Disclos

Fair Value Measures and Disclosures (Tables)	9 Months Ended
	Sep. 30, 2021
Fair Value Disclosures [Abstract]
Schedule of Business Acquisition Contingent Consideration	The following table presents the changes to the Company's liability for acquisition-related contingent consideration for the nine months ended September 30, 2021 (in thousands): Balance as of December 31, 2020 $ 1,330 Change in fair value (1,325) Balance as of September 30, 2021 $ 5

Revenue from Contracts with C_2

Revenue from Contracts with Customers (Tables)	9 Months Ended
	Sep. 30, 2021
Revenue from Contract with Customer [Abstract]
Disaggregation of Revenue	The following table summarizes revenue disaggregation by customer type for the three and nine months ended September 30, 2021 and 2020 (in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2021 2020 2021 2020 Retailers $ 21,737 $ 21,214 $ 66,030 $ 64,202 Brands 17,470 12,080 47,675 33,860 Other 2,368 1,991 8,579 6,698 $ 41,575 $ 35,285 $ 122,284 $ 104,760
Deferred Revenue	The following table summarizes deferred revenue activity for the nine months ended September 30, 2021 (in thousands): Balance, beginning of period Net additions Revenue recognized from deferred revenue Balance, end of period Deferred revenue $ 23,301 102,770 (96,523) $ 29,548
Deferred Contract Costs	The following table summarizes deferred contract cost activity for the nine months ended September 30, 2021 (in thousands): Balance, beginning of period Additions Amortized costs (1) Balance, end of period Deferred contract costs $ 21,333 11,366 (6,719) $ 25,980 (1) Includes contract costs amortized to sales and marketing expense during the period and the impact from foreign currency exchange rate fluctuations.

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	9 Months Ended
	Sep. 30, 2021
Share-based Payment Arrangement [Abstract]
Summary of Stock-Based Compensation Expense	Stock-based compensation expense is included in the following line items in the accompanying condensed consolidated statements of operations for the three and nine months ended September 30, 2021 and 2020 (in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2021 2020 2021 2020 Cost of revenue $ 169 $ 203 $ 665 $ 760 Sales and marketing 928 544 2,744 2,061 Research and development 567 485 1,869 1,708 General and administrative 1,451 1,030 4,461 3,203 Total stock-based compensation expense $ 3,115 $ 2,262 $ 9,739 $ 7,732
Summary of Awards Granted in Period	During the nine months ended September 30, 2021, the Company granted the following share-based awards: Number of Shares Underlying Grant Weighted Average Grant Date Fair Value Restricted stock units 449,506 $ 23.39 Performance stock units 71,932 $ 23.88 Total share-based awards 521,438

Net Income (Loss) Per Share (Ta

Net Income (Loss) Per Share (Tables)	9 Months Ended
	Sep. 30, 2021
Earnings Per Share [Abstract]
Schedule of Earnings Per Share, Basic and Diluted	The following table summarizes the calculation of basic and diluted net income per share (in thousands, except share and per share data): Three Months Ended September 30, Nine Months Ended September 30, 2021 2020 2021 2020 Basic: Net income $ 3,529 $ 3,712 $ 13,546 $ 12,705 Weighted average common shares outstanding, basic 29,931,173 28,802,310 29,665,439 28,485,547 Basic net income per share $ 0.12 $ 0.13 $ 0.46 $ 0.45 Diluted: Net income $ 3,529 $ 3,712 $ 13,546 $ 12,705 Weighted average common shares outstanding, basic 29,931,173 28,802,310 29,665,439 28,485,547 Dilutive effect of: Stock options 575,293 571,884 595,938 334,565 Unvested restricted stock units 967,848 1,062,407 1,034,360 995,717 Weighted average common shares outstanding, diluted 31,474,314 30,436,601 31,295,737 29,815,829 Diluted net income per share $ 0.11 $ 0.12 $ 0.43 $ 0.43
Schedule of Securities Excluded from Calculation of Weighted Average Common Shares Outstanding	The following equity instruments have been excluded from the calculation of diluted net income per share because the effect is anti-dilutive: Three Months Ended September 30, Nine Months Ended September 30, 2021 2020 2021 2020 Stock options 21,632 145,279 22,235 528,777 Restricted stock units 5,291 19,322 231,680 26,397

Segment and Geographic Inform_2

Segment and Geographic Information (Tables)	9 Months Ended
	Sep. 30, 2021
Segment Reporting [Abstract]
Summary of Revenue by Geography	The following table summarizes revenue by geography for the three and nine months ended September 30, 2021 and 2020 (in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2021 2020 2021 2020 Domestic $ 29,199 $ 26,135 $ 87,181 $ 78,571 International 12,376 9,150 35,103 26,189 Total revenue $ 41,575 $ 35,285 $ 122,284 $ 104,760

Stockholders' Equity (Detail)

Stockholders' Equity (Detail) - USD ($)	3 Months Ended						9 Months Ended
	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Sep. 30, 2021	Sep. 30, 2020	Sep. 16, 2021	Dec. 31, 2020
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	$ 147,155,000	$ 139,972,000	$ 130,091,000	$ 114,346,000	$ 103,117,000	$ 99,649,000	$ 130,091,000	$ 99,649,000
Exercise of stock options and vesting of restricted stock units	515,000	136,000	3,587,000	1,420,000	2,047,000	87,000
Stock-based compensation expense	3,115,000	3,576,000	3,048,000	2,262,000	2,556,000	2,914,000
Statutory tax withholding related to net-share settlement of restricted stock units	(2,329,000)	(1,177,000)	(2,061,000)	(1,549,000)	(659,000)	(980,000)
Net income	3,529,000	4,560,000	5,457,000	3,712,000	6,986,000	2,007,000	13,546,000	12,705,000
Foreign currency translation adjustments	(1,157,000)	88,000	(150,000)	438,000	299,000	(800,000)	(1,219,000)	(63,000)
Ending balance	150,828,000	$ 147,155,000	$ 139,972,000	$ 120,629,000	$ 114,346,000	$ 103,117,000	150,828,000	120,629,000
Accounting Standards Update [Extensible List]						us-gaap:AccountingStandardsUpdate201613Member
Accumulated deficit	$ (144,139,000)						$ (144,139,000)			$ (157,685,000)
Authorized shares for repurchase									$ 25,000,000
Cumulative Effect, Period of Adoption, Adjustment
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance						$ 240,000		$ 240,000
Common Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance (in shares)	29,830,607	29,732,852	29,020,424	28,647,086	28,365,069	28,077,469	29,020,424	28,077,469
Beginning balance	$ 30,000	$ 30,000	$ 29,000	$ 29,000	$ 28,000	$ 28,000	$ 29,000	$ 28,000
Exercise of stock options and vesting of restricted stock units (in shares)	314,529	146,164	802,270	411,651	330,692	394,998
Exercise of stock options and vesting of restricted stock units			$ 1,000	$ 0	$ 1,000	$ 0
Statutory tax withholding related to net-share settlement of restricted stock units (in shares)	(96,188)	(48,409)	(89,842)	(77,533)	(48,675)	(107,398)
Ending balance (in shares)	30,048,948	29,830,607	29,732,852	28,981,204	28,647,086	28,365,069	30,048,948	28,981,204		29,020,424
Ending balance	$ 30,000	$ 30,000	$ 30,000	$ 29,000	$ 29,000	$ 28,000	$ 30,000	$ 29,000
Additional Paid-in Capital
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	295,950,000	293,415,000	288,842,000	284,075,000	280,132,000	278,111,000	288,842,000	278,111,000
Exercise of stock options and vesting of restricted stock units	515,000	136,000	3,586,000	1,420,000	2,046,000	87,000
Stock-based compensation expense	3,115,000	3,576,000	3,048,000	2,262,000	2,556,000	2,914,000
Statutory tax withholding related to net-share settlement of restricted stock units	(2,329,000)	(1,177,000)	(2,061,000)	(1,549,000)	(659,000)	(980,000)
Ending balance	297,251,000	295,950,000	293,415,000	286,208,000	284,075,000	280,132,000	297,251,000	286,208,000
Accumulated Other Comprehensive Loss
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	(1,157,000)	(1,245,000)	(1,095,000)	(2,241,000)	(2,540,000)	(1,740,000)	(1,095,000)	(1,740,000)
Foreign currency translation adjustments	(1,157,000)	88,000	(150,000)	438,000	299,000	(800,000)
Ending balance	(2,314,000)	(1,157,000)	(1,245,000)	(1,803,000)	(2,241,000)	(2,540,000)	(2,314,000)	(1,803,000)
Accumulated Deficit
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	(147,668,000)	(152,228,000)	(157,685,000)	(167,517,000)	(174,503,000)	(176,750,000)	(157,685,000)	(176,750,000)
Net income	3,529,000	4,560,000	5,457,000	3,712,000	6,986,000	2,007,000
Ending balance	$ (144,139,000)	$ (147,668,000)	$ (152,228,000)	$ (163,805,000)	$ (167,517,000)	$ (174,503,000)	$ (144,139,000)	$ (163,805,000)

Goodwill and Intangible Asset_2

Goodwill and Intangible Assets - Estimated Useful Lives and Amortization Methodology (Detail)	9 Months Ended
	Sep. 30, 2021
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Estimated useful life of intangible asset (in years)	7 years
Acquired technology
Finite-Lived Intangible Assets [Line Items]
Estimated useful life of intangible asset (in years)	7 years

Goodwill and Intangible Asset_3

Goodwill and Intangible Assets - Goodwill and Intangible Assets Narrative (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization expense	$ 0.3	$ 0.3	$ 0.8	$ 0.6

Fair Value of Measurements - Na

Fair Value of Measurements - Narrative (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2021USD ($)
Business Acquisition [Line Items]
Balance as of December 31, 2020	$ 1,330
Change in fair value	(1,325)
Balance as of September 30, 2021	5
BlueBoard
Business Acquisition [Line Items]
Contingent consideration (up to)	$ 3,000

Capitalized Software Developm_2

Capitalized Software Development Costs - Additional Information (Detail) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Property, Plant and Equipment [Abstract]
Capitalized software development costs	$ 900,000	$ 900,000	$ 2,600,000	$ 2,300,000
Capitalized software development costs amortization	700,000	$ 500,000	2,000,000	$ 1,300,000
Capitalized software development costs, net	$ 4,800,000		$ 4,800,000		$ 4,200,000

Line of Credit - Narrative (Det

Line of Credit - Narrative (Details) - Line of Credit - 2020 Revolving Credit Facility	Aug. 05, 2020USD ($)
Revolving Credit Facility
Line of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity	$ 25,000,000
Maximum increase allowed during term	$ 10,000,000
Line of credit facility, unused capacity, commitment fee percentage	0.50%
Revolving Credit Facility | Base Rate
Line of Credit Facility [Line Items]
Basis spread on variable rate	2.25%
Revolving Credit Facility | London Interbank Offered Rate (LIBOR)
Line of Credit Facility [Line Items]
Basis spread on variable rate	3.25%
Letter of Credit
Line of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity	$ 10,000,000
Outstanding letters of credit interest rate	3.25%

Revenue from Contracts with C_3

Revenue from Contracts with Customers - Disaggregation of Revenue (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Disaggregation of Revenue [Line Items]
Revenue	$ 41,575	$ 35,285	$ 122,284	$ 104,760
Retailers
Disaggregation of Revenue [Line Items]
Revenue	21,737	21,214	66,030	64,202
Brands
Disaggregation of Revenue [Line Items]
Revenue	17,470	12,080	47,675	33,860
Other
Disaggregation of Revenue [Line Items]
Revenue	$ 2,368	$ 1,991	$ 8,579	$ 6,698

Revenue from Contracts with C_4

Revenue from Contracts with Customers - Additional Information (Detail) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Jan. 01, 2021	Dec. 31, 2020
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Contract period	12 months
Payment period	30 days
Revenue	$ 122,300
Deferred contract costs, current	$ 8,700
Capitalized contract cost, amortization period	5 years
Deferred revenue	$ 28,425	$ 20,100	$ 22,819
Marketplaces and Digital Marketing [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Contract period	1 year

Revenue from Contracts with C_5

Revenue from Contracts with Customers - Transaction Price Allocated to Future Performance Obligations (Detail) $ in Millions	Sep. 30, 2021USD ($)
Revenue from Contract with Customer [Abstract]
Remaining performance obligation	$ 40
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-10-01
Revenue from Contract with Customer [Abstract]
Remaining performance obligation	$ 23.3
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Performance obligation period	12 months

Revenue from Contracts with C_6

Revenue from Contracts with Customers - Deferred Revenue (Detail) $ in Thousands	9 Months Ended
	Sep. 30, 2021USD ($)
Deferred revenue
Balance, beginning of period	$ 23,301
Net additions	102,770
Revenue recognized from deferred revenue	(96,523)
Balance, end of period	$ 29,548

Revenue from Contracts with C_7

Revenue from Contracts with Customers - Costs to Obtain Contracts (Detail) $ in Thousands	9 Months Ended
	Sep. 30, 2021USD ($)
Deferred contract costs
Balance, beginning of period	$ 21,333
Additions	11,366
Amortized costs	(6,719)
Balance, end of period	$ 25,980

Stock-Based Compensation - Narr

Stock-Based Compensation - Narrative (Details)	9 Months Ended
	Sep. 30, 2021
Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percent Of Executive Office Equity Awards Granted As Performance-Based Vesting Restricted Stock Units	50.00%
Performance Shares [Member] | Share-based Payment Arrangement, Tranche One [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage	50.00%
Performance Shares [Member] | Share-based Payment Arrangement, Tranche Two [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage	50.00%
Performance Shares [Member] | Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage	0.00%
Performance Shares, 2020 Fiscal Year Grants | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage	150.00%
Performance Shares, 2021 Fiscal Year Grants | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage	200.00%

Stock-Based Compensation - Summ

Stock-Based Compensation - Summary of Stock-Based Compensation Expense (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Stock-Based Compensation [Line Items]
Stock-based compensation expense	$ 3,115	$ 2,262	$ 9,739	$ 7,732
Cost of revenue
Stock-Based Compensation [Line Items]
Stock-based compensation expense	169	203	665	760
Sales and marketing
Stock-Based Compensation [Line Items]
Stock-based compensation expense	928	544	2,744	2,061
Research and development
Stock-Based Compensation [Line Items]
Stock-based compensation expense	567	485	1,869	1,708
General and administrative
Stock-Based Compensation [Line Items]
Stock-based compensation expense	$ 1,451	$ 1,030	$ 4,461	$ 3,203

Stock-Based Compensation - Gran

Stock-Based Compensation - Grants in Period (Detail)	9 Months Ended
	Sep. 30, 2021$ / sharesshares
Number of Shares Underlying Grant
Restricted stock units (RSUs) (in shares)	521,438
Restricted stock units
Number of Shares Underlying Grant
Restricted stock units (RSUs) (in shares)	449,506
Weighted Average Grant Date Fair Value
Restricted stock units (RSUs) (in dollars per share) | $ / shares	$ 23.39
Performance Shares [Member]
Number of Shares Underlying Grant
Restricted stock units (RSUs) (in shares)	71,932
Weighted Average Grant Date Fair Value
Restricted stock units (RSUs) (in dollars per share) | $ / shares	$ 23.88

Net Income (Loss) Per Share - C

Net Income (Loss) Per Share - Calculation of Basic and Diluted Net Income (Loss) per Share (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Sep. 30, 2021	Sep. 30, 2020
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Net income	$ 3,529	$ 4,560	$ 5,457	$ 3,712	$ 6,986	$ 2,007	$ 13,546	$ 12,705
Weighted average common shares outstanding, basic	29,931,173			28,802,310			29,665,439	28,485,547
Basic net income (loss) per share (in dollars per share)	$ 0.12			$ 0.13			$ 0.46	$ 0.45
Weighted average common shares outstanding, diluted (in shares)	31,474,314			30,436,601			31,295,737	29,815,829
Diluted net income (loss) per share (in dollars per share)	$ 0.11			$ 0.12			$ 0.43	$ 0.43
Stock options
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Dilutive effect (in shares)	575,293			571,884			595,938	334,565
Restricted stock units
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Dilutive effect (in shares)	967,848			1,062,407			1,034,360	995,717

Net Income (Loss) Per Share - A

Net Income (Loss) Per Share - Antidilutive Equity Instruments (Detail) - shares	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Stock options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from calculation of weighted average common shares outstanding (in shares)	21,632	145,279	22,235	528,777
Restricted stock units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from calculation of weighted average common shares outstanding (in shares)	5,291	19,322	231,680	26,397

Income Taxes - Narrative (Detai

Income Taxes - Narrative (Details)	3 Months Ended				6 Months Ended	9 Months Ended
	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2020	Jun. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Income Tax Disclosure [Abstract]
Effective tax rate	(1.00%)			(11.20%)		(3.30%)	1.30%
U.S. taxing authority [Member]
Statutory Tax Rate [Line Items]
Statutory tax rate	21.00%			21.00%		21.00%	21.00%
UK taxing authority [Member]
Statutory Tax Rate [Line Items]
Statutory tax rate		25.00%	19.00%	19.00%	17.00%

Segment and Geographic Inform_3

Segment and Geographic Information - Additional Information (Detail)	9 Months Ended
	Sep. 30, 2021segment
Segment Reporting [Abstract]
Number of reportable segment	1
Number of operating segment	1

Segment and Geographic Inform_4

Segment and Geographic Information - Summary of Revenue by Geography (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Segment Reporting Information [Line Items]
Revenue	$ 41,575	$ 35,285	$ 122,284	$ 104,760
Domestic
Segment Reporting Information [Line Items]
Revenue	29,199	26,135	87,181	78,571
International
Segment Reporting Information [Line Items]
Revenue	$ 12,376	$ 9,150	$ 35,103	$ 26,189