FAIR VALUE OF FINANCIAL INSTRUMENTS - Schedule of Quantitative Information (Details) - Level 3 $ in Thousands	Dec. 31, 2022 USD ($)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Carrying Value	$ 542,646
Valuation Technique, Discounted Cash Flow | Yield | CMBS | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input	0.0289
Valuation Technique, Discounted Cash Flow | Yield | CMBS | Weighted Average
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input	0.0529
Valuation Technique, Discounted Cash Flow | Yield | CMBS | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input	0.1747
Valuation Technique, Discounted Cash Flow | Yield | CMBS interest-only | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input	0.0139
Valuation Technique, Discounted Cash Flow | Yield | CMBS interest-only | Weighted Average
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input	0.0372
Valuation Technique, Discounted Cash Flow | Yield | CMBS interest-only | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input	0.1966
Valuation Technique, Discounted Cash Flow | Yield | GNMA interest-only | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input	0.0128
Valuation Technique, Discounted Cash Flow | Yield | GNMA interest-only | Weighted Average
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input	0.0550
Valuation Technique, Discounted Cash Flow | Yield | GNMA interest-only | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input	0.1000
Valuation Technique, Discounted Cash Flow | Yield | Agency securities | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input	0.0270
Valuation Technique, Discounted Cash Flow | Yield | Agency securities | Weighted Average
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input	0.0270
Valuation Technique, Discounted Cash Flow | Yield | Agency securities | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input	0.0270
Recurring | CMBS
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Carrying Value	$ 532,304
Recurring | CMBS interest-only
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Carrying Value	10,026
Recurring | GNMA interest-only
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Carrying Value	281
Recurring | Agency securities
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Carrying Value	$ 35