v3.26.1
Significant Accounting Policies - Additional Information (Details)
$ / shares in Units, $ in Thousands
 3 Months Ended 6 Months Ended 12 Months Ended
Mar. 31, 2026
USD ($)
shares
Mar. 31, 2025
USD ($)
$ / shares
shares
Mar. 31, 2026
USD ($)
Portfolio
Segment
shares
Mar. 31, 2025
USD ($)
$ / shares
shares
Sep. 30, 2025
USD ($)
Portfolio
Significant Accounting Policies [Line Items]          
Provision for taxes $ 100 $ 200 $ 300 $ 500  
Provision for taxes on unrealized appreciation (depreciation) on investments (300) 500 300 1,100  
Deferred tax liability 1,600   1,600   $ 1,900
Net change in provision for taxes on realized and unrealized appreciation (depreciation) on investments $ 0 $ 21 $ 0 $ 94  
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 11,562,000 0 18,838,000  
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)  
At The Market Offering [Member]          
Significant Accounting Policies [Line Items]          
Shares issued from public offering | shares 0 11,562,000 0 18,838,000  
Weighted average price per share of common stock issued | $ / shares   $ 11.34   $ 11.35  
Proceeds from issuance of common stock gross   $ 131,000   $ 213,200  
Legal Fees       192,200 $ 192,200
Deferred offering costs incurred $ 0 $ 200 $ 0 $ 200  
Past Due 30 Days or More          
Significant Accounting Policies [Line Items]          
Financing receivable, nonaccrual, percent past due on cost basis 0.80%   0.80%   0.40%
Financing receivable, nonaccrual, percent past due on fair value basis 0.50%   0.50%   0.20%
Number of portfolio on nonaccrual | Portfolio     3   3