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OTHER NOTES RECEIVABLE - Impaired and general reserve for allowance for loan losses (Details) - Other note receivable - USD ($) $ in Thousands | Sep. 30, 2025 | Jun. 30, 2025 | Dec. 31, 2024 | Sep. 30, 2024 | Jun. 30, 2024 | Dec. 31, 2023
--- | --- | --- | --- | --- | --- | ---
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Outstanding principal balance | $ 6,188 |  | $ 15,412 |  |  | $ 35,353
Allowance for loan losses | 209 | $ 432 | 364 | $ 208 | $ 211 | $ 236
Impaired loans individually evaluated for impairment | 781 |  | 2,038 |  |  |
Specific reserve against impaired loans | 57 |  | 141 |  |  |
Other notes receivable collectively evaluated for allowance | 5,407 |  | 13,374 |  |  |
General allowance for loan losses | $ 152 |  | $ 223 |  |  |

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