BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES - Deferred Revenues (Details) - USD ($) $ in Thousands |
Sep. 30, 2021 |
Dec. 31, 2020 |
Dec. 31, 2019 |
|---|---|---|---|
| Deferred revenue, current | $ 1,222 | $ 1,372 | |
| Deferred revenue, net of current portion | 4,948 | 5,398 | |
| Contract with Customer, Liability, Total | $ 6,170 | $ 6,770 | |
| Sports Wagering Agreements | |||
| Contract with Customer, Liability, Total | $ 6,000 |
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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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- Definition Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable, classified as current. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable, classified as noncurrent. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Details
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