Quarterly report pursuant to Section 13 or 15(d)

Financing Agreements - Notes Payable - AMCF Notes - Additional Information (Details)

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Financing Agreements - Notes Payable - AMCF Notes - Additional Information (Details) - AM Capital Funding, LLC. - USD ($)
 3 Months Ended 6 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2023
Dec. 31, 2022
Sep. 30, 2018
Secured Senior Term Notes          
Debt Instrument [Line Items]          
Percentage of total expense recognized 11.10% 20.40% 12.50% 22.00%  
Weighted average effective interest rate (in percentage) 5.88% 5.88% 5.88% 5.88%  
Secured Senior Term Notes | Variable Interest Entity, Primary Beneficiary          
Debt Instrument [Line Items]          
Interest expense $ 1,100,000 $ 1,500,000 $ 2,500,000 $ 2,900,000  
Senior Subordinated Notes | Secured Senior Term Notes, Series 2018-1, Class A          
Debt Instrument [Line Items]          
Debt instrument, face amount 72,000,000.0   72,000,000.0   $ 72,000,000
Stated interest rate (in percentage)         4.98%
Senior Subordinated Notes | Secured Senior Term Notes, Series 2018-1, Class B          
Debt Instrument [Line Items]          
Debt instrument, face amount $ 28,000,000.0   $ 28,000,000.0   $ 28,000,000
Stated interest rate (in percentage)         5.98%