Quarterly report pursuant to Section 13 or 15(d)

Consolidated Financial Statements Details - Additional Information (Detail)

v3.21.1
Consolidated Financial Statements Details - Additional Information (Detail) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Dec. 31, 2020
Condensed Financial Statements, Captions [Line Items]      
Cash and cash equivalents $ 127,459   $ 114,817
Write-off of property and equipment and leasehold improvements 3,559    
Loss on disposal 1,894    
Depreciation Expense 175 $ 256  
Cost of revenues 4,823 3,250  
Advertising Clients and Content Licensees [Member]      
Condensed Financial Statements, Captions [Line Items]      
Cash received $ 51,129   $ 40,052
Advertising [Member]      
Condensed Financial Statements, Captions [Line Items]      
Percentage of average commission earned on amount invoiced and collected 15.00%    
Gross media placements $ 82,421 54,749  
Advertising [Member] | Billed Revenues [Member]      
Condensed Financial Statements, Captions [Line Items]      
Gross media placements 79,625 50,050  
Advertising [Member] | Netted Against Billings [Member]      
Condensed Financial Statements, Captions [Line Items]      
Cost of revenues $ 71,673 $ 44,499