v3.26.1
Consolidated Statements of Changes in Net Assets (unaudited) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Mar. 31, 2026
Mar. 31, 2025
Investment Company, Net Assets [Roll Forward]        
Beginning balance (in shares)     26,772,467.472  
Beginning balance $ 401,587 $ 340,245 $ 401,587 $ 306,194
Issuance of common stock (in shares)     0 3,690,564.732
Issuance of common stock   21,308   $ 55,359
Net increase (decrease) in net assets resulting from operations:        
Net investment income 7,382 7,212 $ 15,086 14,031
Net realized gain (loss) on investment transactions 1 1 (227) (5)
Net change in unrealized appreciation (depreciation) on investment transactions (5,376) 4 (5,492) 668
Distributions to stockholders:        
Distributions from distributable earnings (losses) (2,450) (2,331) (9,810) (9,808)
Distributions declared and payable (864) (4,886) (864) (4,886)
Total increase (decrease) common stock, outstanding value $ (1,307) $ 21,308 $ (1,307) $ 55,359
Ending balance (in shares) 26,772,467.472 24,103,543.606 26,772,467.472 24,103,543.606
Ending balance $ 400,280 $ 361,553 $ 400,280 $ 361,553
Common Stock        
Investment Company, Net Assets [Roll Forward]        
Beginning balance (in shares) 26,772,467.472 22,683,023.94 26,772,467.472 20,412,978.874
Beginning balance $ 27 $ 23 $ 27 $ 20
Issuance of common stock (in shares)   1,420,519.666   3,690,564.732
Issuance of common stock   $ 1   $ 4
Distributions to stockholders:        
Total increase (decrease) common stock, outstanding (in shares) 0 1,420,519.666 0 3,690,564.732
Total increase (decrease) common stock, outstanding value $ 0 $ 1 $ 0 $ 4
Ending balance (in shares) 26,772,467.472 24,103,543.606 26,772,467.472 24,103,543.606
Ending balance $ 27 $ 24 $ 27 $ 24
Paid in Capital in Excess of Par        
Investment Company, Net Assets [Roll Forward]        
Beginning balance 401,229 339,949 401,229 305,901
Issuance of common stock   21,307   55,355
Distributions to stockholders:        
Total increase (decrease) common stock, outstanding value 0 21,307 0 55,355
Ending balance 401,229 361,256 401,229 361,256
Distributable Earnings (Losses)        
Investment Company, Net Assets [Roll Forward]        
Beginning balance 331 273 331 273
Net increase (decrease) in net assets resulting from operations:        
Net investment income 7,382 7,212 15,086 14,031
Net realized gain (loss) on investment transactions 1 1 (227) (5)
Net change in unrealized appreciation (depreciation) on investment transactions (5,376) 4 (5,492) 668
Distributions to stockholders:        
Distributions from distributable earnings (losses) (2,450) (2,331) (9,810) (9,808)
Distributions declared and payable (864) (4,886) (864) (4,886)
Total increase (decrease) common stock, outstanding value (1,307) 0 (1,307) 0
Ending balance $ (976) $ 273 $ (976) $ 273