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Significant Accounting Policies - Additional Information (Details)
$ / shares in Units, $ in Thousands
 3 Months Ended 6 Months Ended 12 Months Ended
Aug. 11, 2023
USD ($)
Mar. 27, 2023
USD ($)
Mar. 31, 2024
USD ($)
$ / shares
shares
Mar. 31, 2023
USD ($)
shares
Mar. 31, 2024
USD ($)
$ / shares
shares
Mar. 31, 2023
USD ($)
Portfolio
shares
Sep. 30, 2023
USD ($)
Portfolio
Significant Accounting Policies [Line Items]              
Increase (Decrease) in Due to Affiliates         $ (462) $ (3,120)  
Provision for taxes on net investment income     $ 500 $ 200 700 700  
Provision for taxes on unrealized appreciation (depreciation) on investments     200 3,700 200 2,900  
Deferred tax liability     1,600   1,600   $ 1,800
Net provision for taxes on realized loss on investments     0 (300) 0 (300) 300
Provision for taxes on net realized gain on investments     0 $ 0 $ 0 $ 0  
Excise tax percentage         4.00%    
Effective tax rate before excise tax and income taxes         0.00%    
Federal statutory rate         21.00%    
Prepaid expenses and other assets     $ 0   $ 0   $ 894
Stock Issued During Period, Shares, New Issues | shares     4,493,436 4,300,000 4,493,436 4,386,177  
Equity Distribution Agreements [Member]              
Significant Accounting Policies [Line Items]              
Aggregate Offering Price $ 250,000            
End Of Period [Member]              
Significant Accounting Policies [Line Items]              
Net increase (decrease) in cash and cash equivalents           $ 500  
Beginning Of Period [Member]              
Significant Accounting Policies [Line Items]              
Net increase (decrease) in cash and cash equivalents           $ 3,600  
At The Market Offering [Member]              
Significant Accounting Policies [Line Items]              
Stock Issued During Period, Shares, New Issues | shares     4,493,436   4,493,436    
Weighted Average Price Per Share Of Common Stock Issued | $ / shares     $ 11.35   $ 11.35    
Proceeds From Issuance Of Common Stock Gross     $ 51,000        
Deferred Offering Costs     $ 600   $ 600    
At The Market Offering [Member] | Equity Distribution Agreements [Member]              
Significant Accounting Policies [Line Items]              
Aggregate Offering Price   $ 100,000          
Past Due 30 Days or More              
Significant Accounting Policies [Line Items]              
Financing receivable, nonaccrual, percent past due on cost basis     0.40%   0.40%   0.90%
Financing receivable, nonaccrual, percent past due on fair value basis     0.30%   0.30%   0.20%
Number of portfolio on nonaccrual | Portfolio           1 3