v3.26.1
Significant Accounting Policies - Additional Information (Details)
$ / shares in Units, $ in Thousands
 3 Months Ended 9 Months Ended 12 Months Ended
Jun. 30, 2026
USD ($)
shares
Jun. 30, 2025
USD ($)
$ / shares
shares
Jun. 30, 2026
USD ($)
Segment
Portfolio
shares
Jun. 30, 2025
USD ($)
$ / shares
shares
Sep. 30, 2025
USD ($)
Portfolio
Significant Accounting Policies [Line Items]          
Provision for taxes $ 100 $ 200 $ 300 $ 700  
Provision for taxes on unrealized appreciation (depreciation) on investments 1,000 (300) 1,300 800  
Deferred tax liability 600   600   $ 1,900
Net change in provision for taxes on realized and unrealized appreciation (depreciation) on investments $ 49 $ (12) $ 49 $ 82  
Excise tax percentage     4.00%    
Effective tax rate before excise tax and income taxes     0.00%    
Federal statutory rate     21.00%    
Shares issued from public offering | shares 0 2,800,000 0 21,638,000  
Number of reportable segments | Segment     1    
Taxable Subsidiary [Member]          
Significant Accounting Policies [Line Items]          
Net change in provision for taxes on realized and unrealized appreciation (depreciation) on investments $ (100) $ 100 $ (100) $ 100  
Provision for taxes on net realized gain on investments   $ 100   $ 100  
At The Market Offering [Member]          
Significant Accounting Policies [Line Items]          
Shares issued from public offering | shares 0 2,800,000 0 21,638,000  
Weighted average price per share of common stock issued | $ / shares   $ 11.31   $ 11.34  
Proceeds from issuance of common stock gross   $ 31,600   $ 244,800  
Legal Fees     $ 192,200   $ 192,200
Deferred offering costs incurred $ 0 $ 100 $ 0 $ 300  
Past Due 30 Days or More          
Significant Accounting Policies [Line Items]          
Financing receivable, nonaccrual, percent past due on cost basis 1.00%   1.00%   0.40%
Financing receivable, nonaccrual, percent past due on fair value basis 0.40%   0.40%   0.20%
Number of portfolio on nonaccrual | Portfolio     4   3