BORROWINGS - Schedule of Borrowings Outstanding (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2024
Debt Instrument [Line Items]
Combined weighted average interest rate	6.317%	7.407%
Combined weighted average debt outstanding	$ 1,262,235	$ 1,251,202
Line of Credit
Debt Instrument [Line Items]
Long-term debt, gross	671,534		$ 594,357
Secured Debt
Debt Instrument [Line Items]
(Less: Deferred financing fees)	(3,896)		(3,980)
Total Debt Securitization	406,104		406,020
Senior Notes
Debt Instrument [Line Items]
(Less: Deferred financing fees)	(250)		(291)
Total Notes	$ 303,596		299,602
Revolving Credit Facility – May 11, 2021 | Line of Credit
Debt Instrument [Line Items]
Effective interest rate	6.455%
Long-term debt, gross	$ 482,253		$ 456,482
SMBC Credit Facility – March 6, 2023 | Line of Credit
Debt Instrument [Line Items]
Effective interest rate	6.989%		6.535%
Long-term debt, gross	$ 189,281		$ 137,875
September 17, 2024 - Class A-1AR Notes | Secured Debt
Debt Instrument [Line Items]
Effective interest rate	5.932%
Long-term debt, gross	$ 110,000		110,000
September 17, 2024 - Class A-1A Loans | Secured Debt
Debt Instrument [Line Items]
Effective interest rate	5.932%
Long-term debt, gross	$ 115,000		115,000
September 17, 2024 - Class A-1AS Loans | Secured Debt
Debt Instrument [Line Items]
Effective interest rate	5.932%
Long-term debt, gross	$ 50,000		50,000
September 17, 2024 - Class A-1BR Notes | Secured Debt
Debt Instrument [Line Items]
Effective interest rate	6.202%
Long-term debt, gross	$ 35,000		35,000
September 17, 2024 - Class A-2R Notes | Secured Debt
Debt Instrument [Line Items]
Effective interest rate	6.302%
Long-term debt, gross	$ 30,000		30,000
September 17, 2024 - Class B-R Notes | Secured Debt
Debt Instrument [Line Items]
Effective interest rate	6.802%
Long-term debt, gross	$ 40,000		40,000
September 17, 2024 - Class C-R Notes | Secured Debt
Debt Instrument [Line Items]
Effective interest rate	8.802%
Long-term debt, gross	$ 30,000		30,000
July 29, 2021 – Series A Notes | Senior Notes
Debt Instrument [Line Items]
Fixed interest rate	3.50%
Long-term debt, gross	$ 75,000		75,000
September 15, 2021 – Series B Notes | Senior Notes
Debt Instrument [Line Items]
Fixed interest rate	3.50%
Long-term debt, gross	$ 38,000		38,000
October 28, 2021 – Series C Notes | Senior Notes
Debt Instrument [Line Items]
Fixed interest rate	3.50%
Long-term debt, gross	$ 37,000		37,000
May 10, 2022 – Series D Notes | Senior Notes
Debt Instrument [Line Items]
Fixed interest rate	6.00%
Long-term debt, gross	$ 99,362		96,822
July 26, 2022 – Series E Notes | Senior Notes
Debt Instrument [Line Items]
Fixed interest rate	6.00%
Long-term debt, gross	$ 54,484		$ 53,071