BORROWINGS - Issued and Outstanding SBA Debentures (Details) $ in Thousands	Sep. 30, 2024 USD ($) poolingDate	Mar. 31, 2024 USD ($)
Debt Instrument [Line Items]
Debenture Amount	$ 792,875	$ 779,875
SBA Debentures | Unsecured Debt
Debt Instrument [Line Items]
Debenture Amount	$ 153,000	$ 153,000
Number of pooling date | poolingDate	2
Debentures due September 2031 | Unsecured Debt
Debt Instrument [Line Items]
Fixed Interest Rate	1.575%
Debenture Amount	$ 15,000
Debentures due March 2032 | Unsecured Debt
Debt Instrument [Line Items]
Fixed Interest Rate	3.209%
Debenture Amount	$ 25,000
Debentures due September 2032 | Unsecured Debt
Debt Instrument [Line Items]
Fixed Interest Rate	4.435%
Debenture Amount	$ 40,000
Debentures due March 2033 | Unsecured Debt
Debt Instrument [Line Items]
Fixed Interest Rate	5.215%
Debenture Amount	$ 40,000
Debentures due September 2033 | Unsecured Debt
Debt Instrument [Line Items]
Fixed Interest Rate	5.735%
Debenture Amount	$ 10,000
Debentures due March 2034 | Unsecured Debt
Debt Instrument [Line Items]
Fixed Interest Rate	5.164%
Debenture Amount	$ 15,000
Debentures due September 2034 | Unsecured Debt
Debt Instrument [Line Items]
Fixed Interest Rate	4.509%
Debenture Amount	$ 8,000