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Summary of Significant Accounting Policies - Additional Information (Detail)
 12 Months Ended
Dec. 31, 2022
USD ($)
Segment
Dec. 31, 2021
USD ($)
Dec. 31, 2020
USD ($)
Summary Of Significant Accounting Policies [Line Items]      
Gain (losses) from foreign currency remeasurement and settlement $ (377,000) $ 445,000  
Number of reportable segment | Segment 1    
Number of operating segment | Segment 1    
Letter of credit, Total $ 795,000 795,000  
Restricted cash, noncurrent 795,000 795,000  
Investments in a continuous unrealized loss position for more than twelve months $ 0 0  
Number of reporting unit | Segment 1    
Impairment loss on goodwill $ 0    
Impairment of long-lived assets 0    
Payment to acquire interest in joint venture 1,960,000 2,548,000 $ 2,940,000
Share of the net profit loss in the operations of joint venture (2,278,000) (3,132,000) (2,188,000)
Advertising expenses 6,607,000 5,604,000 3,860,000
Impairment losses 0    
Impairment charges related to capitalized software development costs $ 0    
Percentage of uncertain income taxes to be realized for recognizing in the income statement 50.00%    
Accounting Standards Update 2019-12 [Member]      
Summary Of Significant Accounting Policies [Line Items]      
Change in accounting principle, accounting standards update, adopted [true false] true    
Change in accounting principle, accounting standards update, adoption date Jan. 01, 2021    
Change in accounting principle, accounting standards update, immaterial effect [true false] true    
Accounting Standards Update 2021-08 [Member]      
Summary Of Significant Accounting Policies [Line Items]      
Change in accounting principle, accounting standards update, adopted [true false] true    
Change in accounting principle, accounting standards update, adoption date Jul. 01, 2021    
Accounting Standards Update 2016-13 [Member]      
Summary Of Significant Accounting Policies [Line Items]      
Change in accounting principle, accounting standards update, adopted [true false] true    
Change in accounting principle, accounting standards update, adoption date Dec. 31, 2021    
Change in accounting principle, accounting standards update, immaterial effect [true false] true    
Variable Interest Entity, Primary Beneficiary [Member] | CCACV JV LLC [Member]      
Summary Of Significant Accounting Policies [Line Items]      
Payment to acquire interest in joint venture     $ 2,940,000
Percentage of ownership interest in joint venture     49.00%
Estimated additional total capital contributions necessary     $ 11,800,000
Additional capital contribution related to portion of phase one capital commitment $ 1,960,000 2,548,000  
Share of the net profit loss in the operations of joint venture 2,278,000 3,132,000  
Equity method investment carrying value $ (150,000) $ 168,000  
Software Development [Member]      
Summary Of Significant Accounting Policies [Line Items]      
Finite-lived intangible asset, useful life 3 years    
Computer Software [Member]      
Summary Of Significant Accounting Policies [Line Items]      
Property and equipment useful life 3 years    
Furniture and Fixtures [Member]      
Summary Of Significant Accounting Policies [Line Items]      
Property and equipment useful life 3 years    
Office Equipment [Member]      
Summary Of Significant Accounting Policies [Line Items]      
Property and equipment useful life 3 years    
Software Development Costs [Member]      
Summary Of Significant Accounting Policies [Line Items]      
Property and equipment useful life 3 years    
Customer Concentration Risk | Accounts Receivable [Member] | Related Party Client One [Member]      
Summary Of Significant Accounting Policies [Line Items]      
Percentage of net total revenue 18.00% 19.00%  
Customer Concentration Risk | Accounts Receivable [Member] | Related Party Client Two [Member]      
Summary Of Significant Accounting Policies [Line Items]      
Percentage of net total revenue 18.00%    
Customer Concentration Risk | Revenue Benchmark [Member] | Related Party Client One [Member]      
Summary Of Significant Accounting Policies [Line Items]      
Percentage of net total revenue 23.00% 25.00% 22.00%
Minimum [Member] | Computer Equipment [Member]      
Summary Of Significant Accounting Policies [Line Items]      
Property and equipment useful life 3 years    
Maximum [Member]      
Summary Of Significant Accounting Policies [Line Items]      
Percentage of economic or ownership interest in consolidated entities 100.00%    
Maximum [Member] | Computer Equipment [Member]      
Summary Of Significant Accounting Policies [Line Items]      
Property and equipment useful life 4 years