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Asset Backed Debt (Details) - USD ($)
 2 Months Ended 12 Months Ended
Sep. 09, 2021
Jun. 30, 2021
Jun. 30, 2019
Debt Disclosure [Abstract]      
Line of Credit Facility, Maximum Amount Outstanding During Period $ 100,000,000    
Line of Credit Facility, Increase (Decrease), Net 15,000,000    
Compensating Balance, Amount 25,000,000    
Line of Credit Facility, Current Borrowing Capacity 25,900,000    
Letters of Credit Outstanding, Amount $ 43,500,000 $ 41,300,000 $ 34,500,000
Line of credit facility, expiration date Sep. 09, 2026 Nov. 02, 2023  
Line of Credit Facility, Initiation Date Sep. 09, 2021    
Asset Backed Credit Facility Federal Funds Rate Addition 0.50%    
Asset Backed Credit Facility LIBOR Rate One Month Add On 1.00%    
Line Of Credit Basis Spread On Alternate Base Rate Minimum 1.00%    
Line Of Credit Basis Spread On Alternate Base Rate Maximum 1.50%    
Line Of Credit Basis Spread On CDOR and LIBOR Maximum 2.50%    
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage 0.25%    
Asset Backed Line of Credit Balance Limit for Fixed Charge Coverage Ratio $ 15,000,000    
Asset Backed Line of Credit Percentage Limit for Fixed Charge Coverage Ratio 15.00%    
Asset Backed Credit Facility Fixed Charge Coverage Ratio Requirement $ 1.00    
Line Of Credit Basis Spread On CDOR and LIBOR Minimum 2.00%