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

CONSOLIDATED STATEMENTS OF CHANGES IN NET ASSETS (Parentheticals)

v3.25.1
CONSOLIDATED STATEMENTS OF CHANGES IN NET ASSETS (Parentheticals) - $ / shares
12 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Mar. 31, 2023
Mar. 31, 2022
Mar. 31, 2021
Mar. 31, 2020
Mar. 31, 2019
Mar. 31, 2018
Mar. 31, 2017
Mar. 31, 2016
Statement of Stockholders' Equity [Abstract]                    
Net investment income (loss) (in USD per share) $ 0.64 $ 1.08 $ 0.92 $ 0.91 $ 0.83 $ 0.75 $ 0.69 $ 0.84 $ 0.75 $ 0.64
Gain (loss) on investment (in USD per share) $ 1.02 $ 1.12 $ 0.49 $ 0.26 $ 0.10 $ 0.28 $ 0.24 $ 0.05 $ 0 $ 0.11