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Summary of Significant Accounting Policies - Additional Information (Detail)
$ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2023
USD ($)
Customers
Mar. 31, 2022
USD ($)
Customers
Dec. 31, 2022
USD ($)
Customers
Significant Accounting Policies [Line Items]      
Deferred revenue     $ 1,900
Contract with customer, liability, revenue recognized $ 1,200    
Advertising expenses 73,600 $ 76,400  
Allowance for doubtful accounts 900   $ 700
Asset impairment charges $ 0 $ 0  
Common stock, conversion features Each share of Class B common stock is convertible into one share of Class A common stock at the option of the holder at any time.    
Sales Revenue, Net [Member] | Customer Concentration Risk [Member]      
Significant Accounting Policies [Line Items]      
Number of major customers | Customers 2 2  
Sales Revenue, Net [Member] | Customer Concentration Risk [Member] | Customers A [Member]      
Significant Accounting Policies [Line Items]      
Concentration risk percentage 34.00% 14.00%  
Sales Revenue, Net [Member] | Customer Concentration Risk [Member] | Customers B [Member]      
Significant Accounting Policies [Line Items]      
Concentration risk percentage 11.00% 11.00%  
Accounts Receivable [Member] | Credit Concentration Risk [Member]      
Significant Accounting Policies [Line Items]      
Number of major customers | Customers 1   1
Accounts Receivable [Member] | Credit Concentration Risk [Member] | Customers A [Member]      
Significant Accounting Policies [Line Items]      
Concentration risk percentage 30.00%   23.00%
Commission Fees [Member]      
Significant Accounting Policies [Line Items]      
Revenue percentage 9.00% 13.00%