FAIR VALUE OF FINANCIAL INSTRUMENTS (Fair Value, by Balance Sheet Grouping) (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Loans and receivables	$ 2,183,406	$ 1,809,969
Mortgage payable	1,875,620	1,550,594
Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1)
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Loan receivable - due from Manager	0	0
Senior notes in CRE securitizations	0
CRE term reinvestment facility	0
Senior secured financing facility	0	0
Warehouse financing facilities	0	0
Mortgage payable	0	0
Junior subordinated notes	0	0
Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1) \| CRE Whole Loan
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Loans and receivables	0	0
Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1) \| CRE Preferred Equity Investment
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Loans and receivables
Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1) \| 5.75% Senior Unsecured Notes
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Senior Unsecured Notes	0	0
Significant Other Observable Inputs (Level 2)
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Loan receivable - due from Manager	0	0
Senior notes in CRE securitizations	0
CRE term reinvestment facility	0
Senior secured financing facility	0	0
Warehouse financing facilities	0	0
Mortgage payable	0	0
Junior subordinated notes	0	0
Significant Other Observable Inputs (Level 2) \| CRE Whole Loan
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Loans and receivables	0	0
Significant Other Observable Inputs (Level 2) \| CRE Preferred Equity Investment
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Loans and receivables
Significant Other Observable Inputs (Level 2) \| 5.75% Senior Unsecured Notes
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Senior Unsecured Notes	0	0
Significant Unobservable Inputs (Level 3)
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Loan receivable - due from Manager	9,322	9,337
Senior notes in CRE securitizations	878,398
CRE term reinvestment facility	711,875	731,002
Senior secured financing facility	42,926	63,099
Warehouse financing facilities	19,627	534,760
Mortgage payable	20,145	20,185
Junior subordinated notes	42,545	42,777
Significant Unobservable Inputs (Level 3) \| CRE Whole Loan
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Loans and receivables	2,202,675	1,828,299
Significant Unobservable Inputs (Level 3) \| CRE Preferred Equity Investment
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Loans and receivables	9,750	9,511
Significant Unobservable Inputs (Level 3) \| 5.75% Senior Unsecured Notes
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Senior Unsecured Notes	149,310	148,740
Carrying Value
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Loan receivable - due from Manager	10,300	10,375
Senior notes in CRE securitizations	873,463
CRE term reinvestment facility	709,206	728,167
Senior secured financing facility	41,654	61,645
Warehouse financing facilities	18,938	533,862
Mortgage payable	20,145	20,185
Junior subordinated notes	51,548	51,548
Carrying Value \| CRE Whole Loan
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Loans and receivables	2,173,945	1,800,784
Carrying Value \| CRE Preferred Equity Investment
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Loans and receivables	9,461	9,185
Carrying Value \| 5.75% Senior Unsecured Notes
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Senior Unsecured Notes	149,717	149,531
Fair Value
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Loan receivable - due from Manager	9,322	9,337
Senior notes in CRE securitizations	878,398
CRE term reinvestment facility	711,875	731,002
Senior secured financing facility	42,926	63,099
Warehouse financing facilities	19,627	534,760
Mortgage payable	20,145	20,185
Junior subordinated notes	42,545	42,777
Fair Value \| CRE Whole Loan
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Loans and receivables	2,202,675	1,828,299
Fair Value \| CRE Preferred Equity Investment
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Loans and receivables	9,750	9,511
Fair Value \| 5.75% Senior Unsecured Notes
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Senior Unsecured Notes	$ 149,310	$ 148,740

CRE securitization notes payable.

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Warehouse financing facilities.

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Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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For an unclassified balance sheet, reflects the carrying amount of unpaid loan amounts due from related parties at the balance sheet date.

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

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Carrying value as of the balance sheet date, including the current and noncurrent portions, of collateralized debt obligations (with maturities initially due after one year or beyond the operating cycle, if longer). Such obligations include mortgage loans, chattel loans, and any other borrowings secured by assets of the borrower.

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Including the current and noncurrent portions, carrying value as of the balance sheet date of uncollateralized debt obligations (with maturities initially due after one year or beyond the operating cycle if longer).

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