Annual report [Section 13 and 15(d), not S-K Item 405]

DISTRIBUTIONS TO COMMON STOCKHOLDERS - Schedule of Investment Company, Changes in Net Assets (Details)

v3.26.1
DISTRIBUTIONS TO COMMON STOCKHOLDERS - Schedule of Investment Company, Changes in Net Assets (Details) - USD ($)
$ in Thousands
12 Months Ended
Mar. 31, 2026
Mar. 31, 2025
(Overdistributed) underdistributed net investment income    
Investment Company, Changes in Net Assets [Line Items]    
Increase (decrease) due to reclassifications of permanent differences $ (9,994) $ 9,623
Accumulated net realized gain (loss) in excess of distributions    
Investment Company, Changes in Net Assets [Line Items]    
Increase (decrease) due to reclassifications of permanent differences 10,335 (8,424)
Capital in excess of par value    
Investment Company, Changes in Net Assets [Line Items]    
Increase (decrease) due to reclassifications of permanent differences $ (341) $ (1,199)