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BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES - Real Estate Related Notes Receivable (Details) - USD ($) $ in Millions | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Dec. 31, 2025 | Dec. 31, 2023 | Dec. 31, 2024 | Oct. 01, 2024 | Mar. 31, 2020
MultiFamily Non-Same-Store | Lydian - Denver, CO | Tax Increment Financing |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |
Loan commitment | $ 3.9 |  | $ 4.1 | $ 4.1 |
Interest rate | 6.00% |  |  |  |
Multi Family Same-Store | Ironwood | Tax Increment Financing |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |
Loan commitment | $ 4.9 |  | 5.2 |  | $ 6.6
Interest rate | 4.50% |  |  |  |
Multi Family Residential | Inver Grove Heights, Minnesota | Mezzanine Loan |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |
Loan commitment | $ 18.0 |  | 16.3 |  |
Interest rate | 10.00% |  |  |  |
Increase (decrease) in finance receivables |  | $ 15.1 |  |  |
Mortgage loans receivable | $ 15.1 |  | $ 15.1 |  |
Financing receivable, percent of membership interest pledged as collateral | 100.00% |  |  |  |

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