v3.26.3
DEBT - Schedule of MSCC Funding Statement of Operations (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Jun. 30, 2026
Mar. 31, 2026
Sep. 30, 2025
Jun. 30, 2025
Mar. 31, 2025
Sep. 30, 2026
Sep. 30, 2025
INVESTMENT INCOME:                
Total investment income $ 142,532     $ 139,831     $ 432,210 $ 420,850
EXPENSES:                
Interest (38,921)     (32,472)     (109,601) (96,159)
General and administrative (5,238)     (4,928)     (16,352) (15,933)
Total expenses (56,972)     (50,316)     (165,010) (148,191)
NET INVESTMENT INCOME BEFORE TAXES 85,560     89,515     267,200 272,659
NET INVESTMENT INCOME                
Total net realized loss (27,574)     (19,104)     23,227 3,771
Total net unrealized appreciation (depreciation) 68,505     62,978     50,126 107,217
NET INCREASE IN NET ASSETS RESULTING FROM OPERATIONS 117,083 $ 147,577 $ 48,981 123,671 $ 122,534 $ 116,082 313,641 362,287
MSCC Funding I, LLC                
INVESTMENT INCOME:                
Total investment income 14,587     10,154     39,774 31,242
EXPENSES:                
Interest (4,724)     (3,033)     (12,327) (10,621)
Management fee to MSCC (697)     (459)     (1,848) (1,203)
General and administrative (24)     (11)     (66) (127)
Total expenses (5,445)     (3,503)     (14,241) (11,951)
NET INVESTMENT INCOME BEFORE TAXES 9,142     6,651     25,533 19,291
NET INVESTMENT INCOME                
Total net realized loss 0     (2,481)     (6,725) (2,481)
Total net unrealized appreciation (depreciation) 741     2,226     (3,738) (64)
NET INCREASE IN NET ASSETS RESULTING FROM OPERATIONS $ 9,883     $ 6,396     $ 15,070 $ 16,746