Interest rate of mortgage loan within investment in mortgage loan on real estate by entity with substantial portion of business acquiring and holding investment real estate or interest in real estate.

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Amount of undisbursed portion of financing receivable balance. Excludes financing receivable covered under loss sharing agreement.

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Amortized cost, before allowance for credit loss, of financing receivable. Excludes financing receivable covered under loss sharing agreement and net investment in lease.

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BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES - Mortgage Receivable and Notes Receivable (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Multi Family Same-Store \| Ironwood Apartments - New Hope, MN \| Tax Increment Financing
MORTGAGE RECEIVABLE AND NOTES RECEIVABLE
Loan commitment	$ 5.9		$ 6.1
Multi-Family Residential \| Ironwood Apartments - New Hope, MN \| Tax Increment Financing
MORTGAGE RECEIVABLE AND NOTES RECEIVABLE
Interest rate	4.50%
Multi-Family Residential \| Minneapolis, Minnesota \| Construction Loans
MORTGAGE RECEIVABLE AND NOTES RECEIVABLE
Interest rate		4.50%
Mortgage loans receivable at fair value	$ 0.0	$ 29.9
Multi-Family Residential \| Minneapolis, Minnesota \| Mezzanine Loan
MORTGAGE RECEIVABLE AND NOTES RECEIVABLE
Interest rate		11.50%
Mortgage loans receivable at fair value		$ 15.3	$ 0.0