Annual report pursuant to Section 13 and 15(d)

BORROWINGS - Secured Borrowing Narrative (Details)

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BORROWINGS - Secured Borrowing Narrative (Details) - USD ($)
$ in Thousands
 1 Months Ended 12 Months Ended
May 31, 2014
Mar. 31, 2024
Mar. 31, 2023
Mar. 31, 2022
Aug. 31, 2022
Aug. 31, 2012
Debt Instrument [Line Items]            
Cost   $ 854,290 [1] $ 720,630 [2]      
Purchase of investments   $ 183,924 $ 133,756 $ 92,738    
Secured borrowing liability       $ 5,100    
Ginsey Home Solutions, Inc.            
Debt Instrument [Line Items]            
Cost         $ 12,200 $ 5,000
Purchase of investments $ 100          
[1] Cumulative gross unrealized appreciation for federal income tax purposes is $180.5 million; cumulative gross unrealized depreciation for federal income tax purposes is $115.8 million. Cumulative net unrealized appreciation is $64.7 million, based on a tax cost of $855.8 million.
[2] Cumulative gross unrealized appreciation for federal income tax purposes is $150.4 million; cumulative gross unrealized depreciation for federal income tax purposes is $119.3 million. Cumulative net unrealized appreciation is $31.1 million, based on a tax cost of $722.4 million.