v3.26.1
Net Assets - Schedule of Capital Activity (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Investment Company, Net Assets [Roll Forward]    
Balance at beginning of period (in shares) 59,072,291  
Balance, beginning of period $ 1,588,246 $ 1,200,629
Common shares issued 91,820 64,713
Distribution reinvestment 9,030 4,066
Repurchase of common shares (5,232)  
Net investment income (loss) 36,113 28,549
Net realized gain (loss) 3,248 (4,168)
Net change in unrealized appreciation (depreciation) on investments (42,851) (10,075)
Net change in unrealized currency gain (losses) on non-investment assets and liabilities 10 (83)
Distributions declared $ (41,982) (30,818)
Balance at end of period (in shares) 62,662,687  
Balance, end of period $ 1,638,402 $ 1,252,813
Common Shares    
Investment Company, Net Assets [Roll Forward]    
Balance at beginning of period (in shares) 59,072,291 43,472,573
Balance, beginning of period $ 591 $ 435
Common shares issued (in shares) 3,445,862 2,356,405
Common shares issued $ 35 $ 24
Distribution reinvestment (in shares) 339,142 147,779
Distribution reinvestment $ 3 $ 1
Repurchase of common shares (in shares) (194,608)  
Repurchase of common shares $ (2)  
Balance at end of period (in shares) 62,662,687 45,976,757
Balance, end of period $ 627 $ 460
Capital in Excess of Par Value    
Investment Company, Net Assets [Roll Forward]    
Balance, beginning of period 1,615,011 1,197,185
Common shares issued 91,785 64,689
Distribution reinvestment 9,027 4,065
Repurchase of common shares (5,230)  
Balance, end of period 1,710,593 1,265,939
Accumulated Net Investment Income (Loss)    
Investment Company, Net Assets [Roll Forward]    
Balance, beginning of period (9,855) (85)
Net investment income (loss) 36,113 28,549
Distributions declared (41,982) (30,818)
Balance, end of period (15,724) (2,354)
Accumulated Net Realized Gain (Loss)    
Investment Company, Net Assets [Roll Forward]    
Balance, beginning of period (5,793) 413
Net realized gain (loss) 3,248 (4,168)
Balance, end of period (2,545) (3,755)
Accumulated Net Unrealized Appreciation (Depreciation)    
Investment Company, Net Assets [Roll Forward]    
Balance, beginning of period (11,708) 2,681
Net change in unrealized appreciation (depreciation) on investments (42,851) (10,075)
Net change in unrealized currency gain (losses) on non-investment assets and liabilities 10 (83)
Balance, end of period $ (54,549) $ (7,477)