Quarterly report [Sections 13 or 15(d)]

SHARE REPURCHASES - Narrative (Details)

v3.26.3
SHARE REPURCHASES - Narrative (Details)
$ in Millions
Aug. 31, 2026
USD ($)
MSC Income Fund Rule 10b5-1 Stock Repurchase Plan and Main Street Rule 10b5-1 Purchase Plan  
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]  
Share repurchase program, authorized, amount $ 40.0
MSC Income Fund Rule 10b5-1 Stock Repurchase Plan  
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]  
Share repurchase program, authorized, amount 20.0
Purchase Commitments  
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]  
Share repurchase program, authorized, amount $ 20.0