v3.26.3
BORROWINGS - Schedule of SBA Debentures (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Debt Instrument [Line Items]        
Weighted average interest rate 5.61% 5.49% 5.57% 5.47%
Average borrowings $ 1,331,300 $ 991,700 $ 1,247,400 $ 969,300
SBA Debentures | Unsecured Debt        
Debt Instrument [Line Items]        
Interest expense and fees 3,125 1,948 5,808 3,875
Amortization of deferred financing costs 296 197 560 394
Total interest and amortization of deferred financing costs $ 3,421 $ 2,145 $ 6,368 $ 4,269
Weighted average interest rate 4.60% 4.45% 4.56% 4.43%
Average borrowings $ 271,522 $ 175,000 $ 254,803 $ 175,000