Description Of Business Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]

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Maximum estimated service period for players.

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Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line.

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The amount of net income or loss for the period per each share in instances when basic and diluted earnings per share are the same amount and reported as a single line item on the face of the financial statements. Basic earnings per share is the amount of net income or loss for the period per each share of common stock or unit outstanding during the reporting period. Diluted earnings per share includes the amount of net income or loss for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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The designation of funds furnished by a borrower to a lender to assure future payments of the borrower's real estate taxes and insurance obligations with respect to a mortgaged property. Escrow deposits may be made for a variety of other purposes such as earnest money and contingent payments. This element excludes replacement reserves which are an escrow separately provided for within the US GAAP taxonomy.

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Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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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, 2020	Dec. 31, 2019	Dec. 31, 2018
Description Of Business Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Maximum estimated service period for players	6 months
Basic and diluted loss per share	$ 0.12	$ 0.15	$ 0.29
Selling and Marketing Expenses
Description Of Business Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Advertising expenses	$ 300	$ 400	$ 1,200
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 account	$ 300	$ 531