DEBT SECURITIES ISSUED - Narrative (Details) - USD ($) $ in Thousands  | 
Mar. 31, 2022  | 
Oct. 31, 2021  | 
Mar. 31, 2021  | 
Dec. 31, 2019  | 
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| FRHC notes | ||||
| Debt Instrument [Line Items] | ||||
| Fixed annual coupon rates (in percent) | 7.00% | |||
| Debt instrument face amount | $ 20,500 | |||
| SPC Notes | ||||
| Debt Instrument [Line Items] | ||||
| Fixed annual coupon rates (in percent) | 5.50% | |||
| Debt instrument face amount | $ 13,200 | |||
| Minimum | ||||
| Debt Instrument [Line Items] | ||||
| Fixed annual coupon rates (in percent) | 5.50% | 7.00% | 
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- Definition Face (par) amount of debt instrument at time of issuance. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
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- Definition Contractual interest rate for funds borrowed, under the debt agreement. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
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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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