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BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES - Deferred Revenues: Market Access Fees from Sports Wagering Agreements (Details) - USD ($) $ in Millions | 3 Months Ended |
--- | --- | ---
Mar. 31, 2021 | Dec. 31, 2020
Basis Of Presentation [Line Items] |  |
Liabilities in other accrued expenses | $ 0.7 | $ 0.8
Sports Wagering Agreements |  |
Basis Of Presentation [Line Items] |  |
Revenue term | 10 years |

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- Definition Liabilities Based On Standalone Retail Value Included In Other Accrued Expenses. + References No definition available. + Details
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- Definition Term of recognition of deferred revenue over the years in , PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Details
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