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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Additional information (A-J) (Details) |  |  |  |  |  |  |  | 3 Months Ended |  |  |  |  |  |  |  |  |  |  |
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Feb. 27, 2025 USD ($) | Dec. 17, 2024 USD ($) | Nov. 15, 2024 USD ($) | Dec. 18, 2023 USD ($) | Aug. 21, 2023 USD ($) | Sep. 23, 2022 USD ($) | Dec. 20, 2021 USD ($) | Mar. 31, 2025 USD ($) | Mar. 31, 2024 USD ($) | Mar. 31, 2023 USD ($) | Jul. 11, 2025 | Jul. 01, 2025 USD ($) | Jun. 30, 2025 USD ($) | Mar. 10, 2025 USD ($) | Feb. 28, 2025 | Feb. 26, 2025 | Feb. 07, 2025 loan | Dec. 31, 2024 USD ($) | Feb. 14, 2024 USD ($) | Nov. 20, 2023 | Nov. 02, 2023 USD ($)
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loans held for sale, at fair value |  |  |  |  |  |  |  |  | $ 5,302,000 | $ 22,576,000 |  |  |  |  |  |  |  |  |  |  |  |
Gain on extinguishment of debt |  |  |  |  |  |  |  |  | 10,532,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Initial consolidation of VIE |  |  |  |  |  |  |  |  | 12,494,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Noncontrolling interest |  |  |  |  |  |  |  |  | 1,575,000 |  |  |  |  |  | $ 1,575,000 |  |  |  |  |  |  |
Payments to noncontrolling interests |  |  |  |  |  |  |  |  | 2,918,000 |  |  |  |  |  |  |  |  |  |  |  |  |
RSU equity awards reclassified to liability |  |  |  |  |  |  |  |  | 2,138,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from sale of productive assets |  |  |  |  |  |  |  |  |  | 2,000,000 |  |  |  |  |  |  |  |  |  |  |  |
Non-cash investing activity |  |  |  |  |  |  |  |  |  | 42,077,000 |  |  |  |  |  |  |  |  |  |  |  |
Loans receivable, at fair value | [1] |  |  |  |  |  |  |  | 98,596,000 |  |  |  |  |  |  |  |  |  | $ 90,103,000 |  |  |
Fair value, option, aggregate differences, loans and long-term receivables |  |  |  |  |  |  |  |  | 329,466,000 |  |  |  |  |  |  |  |  |  | 355,901,000 |  |  |
Financing receivable, unrealized gain (loss) |  |  |  |  |  |  |  |  | (8,096,000) | (12,130,000) |  |  |  |  |  |  |  |  |  |  |  |
Financing receivable, nonaccrual |  |  |  |  |  |  |  |  | $ 17,334,000 |  |  |  |  |  |  |  |  |  | $ 21,122,000 |  |  |
Nonaccrual to outstanding, percent |  |  |  |  |  |  |  |  | 17.60% |  |  |  |  |  |  |  |  |  | 23.40% |  |  |
Financing receivable, 90 days or more past due, still accruing |  |  |  |  |  |  |  |  | $ 328,016,000 |  |  |  |  |  |  |  |  |  | $ 321,544,000 |  |  |
Fair value, option, credit risk, gains (losses) on assets |  |  |  |  |  |  |  |  | (8,096,000) | $ (11,339,000) |  |  |  |  |  |  |  |  |  |  |  |
Loans receivable, fair value disclosure |  |  |  |  |  |  |  |  | 98,596,000 |  |  |  |  |  |  |  |  |  | 90,103,000 |  |  |
Financing receivable, amount exceed fair value |  |  |  |  |  |  |  |  | 222,634,000 |  |  |  |  |  |  |  |  |  | 222,911,000 |  |  |
Long-term debt, number of loans | loan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2 |  |  |  |
Total Term Loans |  |  |  |  |  |  |  |  | 1,370,769,000 |  |  |  |  |  |  |  |  |  | 1,530,561,000 |  |  |
Conn’s |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loan receivable, amount of consideration received |  |  | $ 27,738,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loans receivable, at fair value | [1] |  |  |  |  |  |  |  | 61,316,000 |  |  |  |  |  |  |  |  |  | 51,902,000 |  |  |
Related Party | Torticity, LLC |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loans receivable, fair value disclosure |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 15,369,000
Loans receivable, fair value disclosure, drawn |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 6,690,000
Loans receivable, basis spread on variable rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 15.00% | 15.00%
Freedom VCM Holdings, LLC |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loans receivable, at fair value |  |  |  |  |  |  |  |  | 2,334,000 |  |  |  |  |  |  |  |  |  | 2,057,000 |  |  |
Retail Industry |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss on sales of loans, net |  |  |  |  |  |  |  |  | 38,100,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Total Term Loans |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 45,826,000 |  |  |
Long-term debt, gross |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 6,082,000 |  |  |
Additional debt, fair value disclosure |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 39,744,000 |  |  |
Retail Industry | First Lien Loan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loans receivable, fair value disclosure |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 19,761,000 |  |  |
Retail Industry | Related Party | Conn’s |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loans receivable, at fair value |  |  |  |  | $ 108,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loans receivable, fair value disclosure |  |  |  |  |  |  |  |  | 15,000,000 |  |  |  |  |  |  |  |  |  | 19,065,000 |  |  |
Long-term debt, gross |  |  |  |  |  |  |  |  | 93,000,000 |  |  |  |  |  |  |  |  |  | 93,000,000 | $ 93,000 |  |
Debt instrument, floor, percentage |  |  |  |  | 4.80% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, basis spread on variable rate |  |  |  |  | 8.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, unamortized discount |  |  |  |  |  |  |  |  | 2,705,000 |  |  |  |  |  |  |  |  |  | 2,705,000 |  |  |
Loans receivable, exceeded fair value disclosure |  |  |  |  |  |  |  |  | 75,295,000 |  |  |  |  |  |  |  |  |  | 71,230,000 |  |  |
Retail Industry | Related Party | Torticity, LLC |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt, gross |  |  |  |  |  |  |  |  | 16,333,000 |  |  |  |  |  |  |  |  |  | 16,333,000 |  |  |
Retail Industry | Related Party | GA Holdings |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt, gross |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,339,000 |  |  |
Retail Industry | Related Party | GA Joann Retail Partnership, LLC |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowing capacity credit facility |  | $ 52,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Retail Industry | Related Party | BR Financial |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, basis spread on variable rate |  | 10.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowing capacity credit facility |  | $ 24,653,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Freedom VCM Holdings, LLC |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate |  |  |  |  |  | 12.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loans receivable, fair value disclosure |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2,169,000 |  |  |
Dividends paid, equal to the greater of net after-tax proceeds, percentage |  |  |  |  |  | 80.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Dividends paid, equal to the greater of gross proceeds, percentage |  |  |  |  |  | 50.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Take-private transaction, price |  |  |  |  |  | $ 227,296,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Freedom VCM Holdings, LLC | First Priority Security Interest |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loans receivable, fair value disclosure |  |  |  |  |  | 200,506,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
W.S. Badcock Corporation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Payments to acquire finance receivables |  |  |  |  |  |  | $ 168,363,000 | $ 400,000,000 |  |  | $ 145,278,000 |  |  |  |  |  |  |  |  |  |  |
Freedom VCM Receivables, Inc. | Related Party |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loans receivable, fair value disclosure |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3,913,000 |  |  |
Payments to acquire finance receivables |  |  |  |  |  | 58,872,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss on sale of financing receivable |  |  |  |  |  | $ 78,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate |  |  |  |  |  | 19.74% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
B.Riley Principal Investments, LLC ("BRPI") | Related Party | Torticity, LLC |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loans receivable, fair value disclosure |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 |  |  | $ 25,000,000
Loans receivable, fair value disclosure, drawn |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 15,000,000
Fair Value, Measurements, Recurring |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value, option, aggregate differences, loans and long-term receivables |  |  |  |  |  |  |  |  | 428,062,000 |  |  |  |  |  |  |  |  |  | 446,004,000 |  |  |
Loans receivable |  |  |  |  |  |  |  |  | 224,968,000 |  |  |  |  |  |  |  |  |  | 224,968,000 |  |  |
Revolving Credit Facility | Related Party | GA Holdings |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, basis spread on variable rate |  |  |  | 4.75% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Senior Notes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total Term Loans |  |  |  |  |  |  |  |  | 1,370,769,000 |  |  |  |  |  |  |  |  |  | 1,530,561,000 |  |  |
Long-term debt, gross |  |  |  |  |  |  |  |  | 1,370,842,000 |  |  |  |  |  |  |  |  |  | 1,530,656,000 |  |  |
Senior Notes | Secured Debt |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Warrants and rights outstanding |  |  |  |  |  |  |  |  | 863,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total Term Loans |  |  |  |  |  |  |  |  | 184,088,000 |  |  |  |  |  |  |  |  |  | 199,429,000 |  |  |
Long-term debt, gross |  |  |  |  |  |  |  |  | 205,479,000 |  |  |  |  |  |  |  |  |  | 205,569,000 |  |  |
Line of Credit | Revolving Credit Facility | Related Party | GA Holdings |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowing capacity credit facility |  |  |  | $ 25,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of credit, outstanding |  |  |  | $ 1,698,000 |  |  |  |  | 27,898,000 |  |  |  |  |  |  |  |  |  | $ 1,698,000 |  |  |
Line of Credit | Revolving Credit Facility | Related Party | GA Holdings | Subsequent Event |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowing capacity credit facility |  |  |  |  |  |  |  |  |  |  |  |  | $ 25,000,000 | $ 40,000,000 |  |  |  |  |  |  |  |
Line of Credit | Revolving Credit Facility | Related Party | GA Joann Retail Partnership, LLC |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of credit, outstanding |  |  |  |  |  |  |  |  | 14,184,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Cash | Related Party | Torticity, LLC |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loans receivable, basis spread on variable rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 7.50% |
Payment in Kind (PIK) Note | Related Party | Torticity, LLC |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loans receivable, basis spread on variable rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 7.50% |
6.375% Senior Notes due 2025 | Senior Notes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 6.375% | 6.375% |  | 6.375% |  |  |
Long-term debt, gross |  |  |  |  |  |  |  |  | $ 0 |  |  |  |  |  |  |  |  |  | $ 145,211,000 |  |  |
5.50% Senior Notes due March 2026 | Senior Notes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate |  |  |  |  |  |  |  |  | 5.50% |  |  |  |  |  |  |  |  |  |  |  |  |
Repayments of long-term debt |  |  |  |  |  |  |  |  | $ 86,309,000 |  |  |  |  |  |  |  |  |  |  |  |  |
5.50% Senior Notes due March 2026 | Senior Notes | Subsequent Event |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate |  |  |  |  |  |  |  |  |  |  |  | 5.50% |  |  |  |  |  |  |  |  |  |
5.00% Senior Notes due December 2026 | Senior Notes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate |  |  |  |  |  |  |  |  | 5.00% |  |  |  |  |  |  |  |  |  |  |  |  |
Repayments of long-term debt |  |  |  |  |  |  |  |  | $ 36,745,000 |  |  |  |  |  |  |  |  |  |  |  |  |
5.00% Senior Notes due December 2026 | Senior Notes | Subsequent Event |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate |  |  |  |  |  |  |  |  |  |  |  | 5.00% |  |  |  |  |  |  |  |  |  |
8.00% New Notes due January 1, 2028 | Senior Notes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Repayments of long-term debt |  |  |  |  |  |  |  |  | 107,156,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Term Loan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total Term Loans |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 117,292,000 |  |  |
Term Loan | Line of Credit | Secured Debt |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Warrants and rights outstanding |  |  |  |  |  |  |  |  | 7,860,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Accrued exit fee |  |  |  |  |  |  |  |  | $ 224,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Principal amount |  |  |  |  |  |  | $ 148,200,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
[1] | At March 31, 2025, the balance sheet includes cash of $744, securities and other investments owned, at fair value of $577, loans receivable, at fair value of $3,575, prepaid and other expenses of $3,824, accrued expenses and other liabilities of $528 and noncontrolling interest of $7,099 of consolidated variable interest entities (Note 2(o)).

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