BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES - Deferred Revenues: Market Access Fees from Sports Wagering Agreements (Details) - USD ($) $ in Thousands |
Sep. 30, 2021 |
Apr. 01, 2021 |
Dec. 31, 2020 |
Dec. 22, 2020 |
Dec. 31, 2019 |
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| Basis Of Presentation [Line Items] | |||||
| Deferred revenues | $ 6,170 | $ 6,770 | |||
| Liabilities in other accrued expenses | 600 | $ 800 | |||
| Bronco Billy's And Rising Star Casino Resort [Member] | |||||
| Basis Of Presentation [Line Items] | |||||
| Deferred revenues | $ 2,000 | ||||
| Rising Star Casino Resort | |||||
| Basis Of Presentation [Line Items] | |||||
| Deferred revenues | $ 1,000 | ||||
| Bronco Billy's Casino and Hotel | |||||
| Basis Of Presentation [Line Items] | |||||
| Deferred revenues | $ 1,000 | ||||
| Sports Wagering Agreements | |||||
| Basis Of Presentation [Line Items] | |||||
| Deferred revenues | $ 6,000 |
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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- Definition Liabilities Based On Standalone Retail Value Included In Other Accrued Expenses. No definition available.
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- Definition Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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