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Long-Term Debt (Details) - Unsecured revolving credit facility
Jan. 31, 2023
USD ($)
Debt Instrument  
Maximum borrowing capacity $ 63,000,000
Unsecured revolving credit facility  
Debt Instrument  
Remaining borrowing capacity 392,500,000
Line of credit 100,000,000
Maximum borrowing capacity $ 500,000,000