Quarterly report pursuant to Section 13 or 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 3 Months Ended 9 Months Ended
Dec. 21, 2021
Sep. 30, 2023
Mar. 31, 2024
Mar. 31, 2023
Mar. 31, 2024
Mar. 31, 2023
Jun. 30, 2023
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     $ 3,700,000   $ 3,700,000   $ 2,400,000
Variable rate basis         daily SOFR rate    
Credit facility, interest rate at period end     5.30%   5.30%    
Borrowings due on demand     $ 290,000,000   $ 290,000,000   235,000,000
Borrowings available     60,000,000   60,000,000   $ 115,000,000
Line of credit, increase in incremental facility     190,000,000   190,000,000    
Interest expense     $ 6,300,000 $ 5,100,000 $ 18,000,000 $ 11,100,000  
Percentage of total expense recognized     63.90% 54.80% 60.10% 49.00%  
Effective rate of interest     8.56% 7.46% 8.48% 6.79%  
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%