FAIR VALUE OF FINANCIAL INSTRUMENTS (Fair Value, by Balance Sheet Grouping) (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Loans and receivables	$ 1,678,721	$ 1,828,336
Mortgages payable	1,592,841	1,690,723
Quoted Prices in Active Markets for Identical Assets of Liabilities (Level 1)
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Loan receivable - related party	0	0
Senior notes in CRE securitizations	0	0
Senior secured financing facility	0	0
Warehouse financing facilities	0	0
Mortgages payable	0	0
Junior subordinated notes	0	0
Quoted Prices in Active Markets for Identical Assets of 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 of Liabilities (Level 1) \| 5.75% Senior Unsecured Notes
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
5.75% Senior Unsecured Notes	0	0
Significant Other Observable Inputs (Level 2)
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Loan receivable - related party	0	0
Senior notes in CRE securitizations	0	0
Senior secured financing facility	0	0
Warehouse financing facilities	0	0
Mortgages 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) \| 5.75% Senior Unsecured Notes
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
5.75% Senior Unsecured Notes	0	0
Significant Unobservable Inputs (Level 3)
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Loan receivable - related party	8,804	8,598
Senior notes in CRE securitizations	1,074,687	1,163,048
Senior secured financing facility	63,099	64,495
Warehouse financing facilities	165,092	170,861
Mortgages payable	65,277	43,779
Junior subordinated notes	39,939	38,406
Significant Unobservable Inputs (Level 3) \| CRE Whole Loan
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Loans and receivables	1,712,987	1,858,265
Significant Unobservable Inputs (Level 3) \| 5.75% Senior Unsecured Notes
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
5.75% Senior Unsecured Notes	142,785	138,795
Carrying Value
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Loan receivable - related party	10,850	10,975
Senior notes in CRE securitizations	1,093,953	1,204,570
Senior secured financing facility	60,539	61,568
Warehouse financing facilities	163,517	168,588
Mortgages payable	64,002	41,786
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	1,678,721	1,828,336
Carrying Value \| 5.75% Senior Unsecured Notes
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
5.75% Senior Unsecured Notes	148,472	148,140
Fair Value
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Loan receivable - related party	8,804	8,598
Senior notes in CRE securitizations	1,074,687	1,163,048
Senior secured financing facility	63,099	64,495
Warehouse financing facilities	165,092	170,861
Mortgages payable	65,277	43,779
Junior subordinated notes	39,939	38,406
Fair Value \| CRE Whole Loan
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Loans and receivables	1,712,987	1,858,265
Fair Value \| 5.75% Senior Unsecured Notes
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
5.75% Senior Unsecured Notes	$ 142,785	$ 138,795

CRE securitization notes payable.

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The carrying amount of junior subordinated 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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