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Principal Activities, Basis of Presentation, and Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($)
$ / shares in Units, $ in Thousands
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Description Of Business Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]      
Maximum estimated service period for players 6 months    
Government subsidies $ 44 $ 0 $ 49
Government Assistance, Statement of Income or Comprehensive Income [Extensible Enumeration] Other Nonoperating Income (Expense) Other Nonoperating Income (Expense) Other Nonoperating Income (Expense)
Basic loss per share $ 0.25 $ 0.31 $ 0.12
Diluted loss per share $ 0.25 $ 0.31 $ 0.12
Selling and Marketing Expenses      
Description Of Business Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]      
Advertising expenses $ 200 $ 200 $ 300
Minimum | Capitalized software development cost      
Description Of Business Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]      
Finite lived intangible assets, useful life 1 year    
Maximum | Capitalized software development cost      
Description Of Business Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]      
Finite lived intangible assets, useful life 3 years    
Prepaid Licensing and Royalty Fees | Minimum      
Description Of Business Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]      
Finite lived intangible assets, useful life 1 year    
Prepaid Licensing and Royalty Fees | Maximum      
Description Of Business Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]      
Finite lived intangible assets, useful life 2 years    
Performance Bonds | Restricted Cash      
Description Of Business Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]      
Escrow accounts $ 313 $ 306