Quarterly report pursuant to Section 13 or 15(d)

DISTRIBUTIONS TO COMMON STOCKHOLDERS - Narrative (Details)

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DISTRIBUTIONS TO COMMON STOCKHOLDERS - Narrative (Details) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Mar. 31, 2023
Equity [Abstract]      
Investment company, cash distributions paid to common stockholders from ordinary income 80.40%    
Investment company, cash distributions paid to common stockholders from capital gains 19.60%    
Cash distributions to common stockholders $ 12,100 $ 11,500  
Distributions to common stockholders from ordinary income 7,069 [1] 3,188 [1] $ 21,400
Distributions to common stockholders from net realized gains 5,024 [1] 8,268 [1] $ 10,600
Investment company, net adjustments for tax difference to capital distribution $ 600 $ 900  
[1] Refer to Note 8 — Distributions to Common Stockholders in the accompanying Notes to Consolidated Financial Statements for additional information.