REAL ESTATE AND OTHER SECURITIES - Schedule of RMBS Designated as AFS in an Unrealized Loss Position (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2024 USD ($) security	Dec. 31, 2023 USD ($)
Debt Securities, Available-for-sale [Line Items]
Credit Impairment	$ (10,684)	$ (10,152)
Weighted Average Life (Years)	1 year 2 months 12 days
Less than 12 Months
Debt Securities, Available-for-sale [Line Items]
Outstanding Face Amount	$ 59,123
Before Credit Impairment - Amortized Cost Basis	55,154
Credit Impairment	(21)
After Credit Impairment - Amortized Cost Basis	55,133
Gross Unrealized Losses - Less than 12 Months	(4,486)
Carrying Value - Less than 12 Months	$ 50,647	49,358
Number of Securities - Less than 12 Months | security	39
Weighted Average Coupon	3.10%
Weighted Average Yield	4.30%
Weighted Average Life (Years)	6 years 7 months 6 days
12 or More Months
Debt Securities, Available-for-sale [Line Items]
Outstanding Face Amount	$ 298,427
Before Credit Impairment - Amortized Cost Basis	277,365
Credit Impairment	(10,663)
After Credit Impairment - Amortized Cost Basis	266,702
Gross Unrealized Losses - 12 or More Months	(20,637)
Carrying Value - 12 or More Months	$ 246,065	253,058
Number of Securities - 12 or More Months | security	151
Weighted Average Coupon	3.70%
Weighted Average Yield	3.70%
Weighted Average Life (Years)	6 years 6 months
Total/Weighted Average
Debt Securities, Available-for-sale [Line Items]
Outstanding Face Amount	$ 357,550
Before Credit Impairment - Amortized Cost Basis	332,519
Credit Impairment	(10,684)
After Credit Impairment - Amortized Cost Basis	321,835
Gross Unrealized Losses - Total	(25,123)
Carrying Value - Total	$ 296,712	$ 302,416
Number of Securities - Total | security	190
Weighted Average Coupon	3.60%
Weighted Average Yield	3.80%
Weighted Average Life (Years)	6 years 6 months