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Subsequent Events - Additional Information (Details) - USD ($)
$ / shares in Units, $ in Millions
 1 Months Ended 3 Months Ended 9 Months Ended
Jul. 31, 2023
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2022
Apr. 30, 2023
Jan. 31, 2021
Subsequent Event [Line Items]              
Debt securitization           $ 297.8 $ 300.7
Common stock shares issued   5,805,484 136,072 10,191,661 2,464,910    
Per share market value, end of period   $ 10.65 $ 11.48 $ 10.65 $ 11.48    
At The Market Offering [Member]              
Subsequent Event [Line Items]              
Common stock shares issued   5,805,484   5,891,661      
Weighted average price per share of common stock issued   $ 11.03   $ 11.04      
Subsequent Event              
Subsequent Event [Line Items]              
Common stock shares issued 3,197,403            
Per share market value, end of period $ 11.01            
Sales Commissions and Fees $ 35.2            
Credit Facility, Description On July 31, 2023, the Credit Facility's commitment was increased by $20 million due to the inclusion of a new lender to the facility. The additional commitment increases the Credit Facility's total commitment amount to $386 million.            
Subsequent Event | Credit facility [member]              
Subsequent Event [Line Items]              
Credit Facility Increase, Amount $ 20.0            
Maximum borrowing capacity $ 386.0