BORROWINGS - Schedule of Issued and Outstanding SBA Debentures (Details) $ in Thousands	Sep. 30, 2022 USD ($) poolingDate	Mar. 31, 2022 USD ($)
Debt Instrument [Line Items]
Outstanding Balance	$ 610,000	$ 535,000
Unsecured Debt | SBA Debentures
Debt Instrument [Line Items]
Outstanding Balance	$ 80,000	$ 40,000
Number of pooling date | poolingDate	2
Unsecured Debt | Debentures, Due September 2031
Debt Instrument [Line Items]
Fixed Interest Rate	1.575%
Outstanding Balance	$ 15,000
Unsecured Debt | Debenture Due March 2032
Debt Instrument [Line Items]
Fixed Interest Rate	3.209%
Outstanding Balance	$ 25,000
Unsecured Debt | Debenture Due January 2032
Debt Instrument [Line Items]
Fixed Interest Rate	4.533%
Outstanding Balance	$ 40,000