v3.25.4
INCOME TAXES - Narrative (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended
Dec. 31, 2025
Mar. 31, 2025
Income Tax Contingency [Line Items]    
Undistributed ordinary income - tax basis $ 60,600  
Cumulative undistributed taxable income (in usd per share) $ 1.02  
Cost of investments $ 2,024,200 $ 1,776,100
Gross unrealized appreciation 117,600 117,400
Gross unrealized depreciation 139,700 108,200
Net unrealized appreciation (depreciation) (22,100) (9,200)
Total net deferred tax (liabilities) assets (15,026) $ (16,780)
RIC    
Income Tax Contingency [Line Items]    
Cost of investments 1,965,000  
Gross unrealized appreciation 18,600  
Gross unrealized depreciation 126,500  
Net unrealized appreciation (depreciation) (107,900)  
Taxable Subsidiary    
Income Tax Contingency [Line Items]    
Cost of investments 59,200  
Gross unrealized appreciation 99,000  
Gross unrealized depreciation 13,200  
Net unrealized appreciation (depreciation) $ 85,800  
O 2026 M3 Tax Year Dividends    
Income Tax Contingency [Line Items]    
Dividends declared (in usd per share) $ 0.1934  
O 2026 M2 Tax Year Dividends    
Income Tax Contingency [Line Items]    
Dividends declared (in usd per share) 0.1934  
O 2026 M1 Tax Year Dividends    
Income Tax Contingency [Line Items]    
Dividends declared (in usd per share) 0.1934  
November 19, 2025 supplemental    
Income Tax Contingency [Line Items]    
Dividends declared (in usd per share) $ 0.06