Annual report pursuant to Section 13 and 15(d)

Financing Agreements - Lines of Credit - Trading Credit Facility - Additional Information (Details)

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Financing Agreements - Lines of Credit - Trading Credit Facility - Additional Information (Details) - Trading Credit Facility - Line of Credit - USD ($)
1 Months Ended 12 Months Ended
Dec. 21, 2021
Jun. 30, 2024
Sep. 30, 2023
Jun. 30, 2024
Jun. 30, 2023
Jun. 30, 2022
Debt Instrument [Line Items]            
Line of credit, maturity date Dec. 21, 2024   Sep. 20, 2025      
Stated interest rate (in percentage)   7.70%   7.70%    
Accumulated amortization of loan cost   $ 3,400,000   $ 3,400,000 $ 2,400,000  
Variable rate basis       daily SOFR rate    
Borrowings due on demand   245,000,000   $ 245,000,000 235,000,000  
Borrowings available   145,500,000   145,500,000 115,000,000  
Line of credit, increase in incremental facility   190,000,000   190,000,000    
Line of credit facility amended increase in incremental facility   $ 422,500,000        
Interest expense       $ 24,300,000 $ 15,900,000 $ 8,500,000
Percentage of total expense recognized       61.40% 50.30% 38.60%
Effective rate of interest       8.50% 7.15% 4.47%
Maximum            
Debt Instrument [Line Items]            
Line of credit, current borrowing capacity $ 350,000,000          
SOFR            
Debt Instrument [Line Items]            
Applicable margin of basis points 2.36%          
Credit facility, interest rate at period end       5.30%