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Debt (Textuals) (Details) - USD ($)
3 Months Ended 9 Months Ended
Dec. 31, 2021
Mar. 31, 2022
Mar. 31, 2021
Jun. 30, 2021
Long-term Debt Instruments [Line Items]        
Letters of Credit Outstanding, Amount   $ 4,798,000   $ 4,540,000
Long-term debt repayments $ 98,206,000 550,432,000 $ 82,070,000  
Payment of debt issuance costs   (1,956,000) $ (399,000)  
Debt Issuance Costs, Gross, Current   540,000    
Interest Expense        
Long-term Debt Instruments [Line Items]        
Amortization of Debt Issuance Costs   118,000    
Long-term Debt [Member]        
Long-term Debt Instruments [Line Items]        
Long-term Debt, Percentage Bearing Variable Interest, Percentage Rate       1.88%
Repayments of Unsecured Debt   540,500,000    
Long-term Debt   0   $ 550,250,000
Asset-backed Securities, Securitized Loans and Receivables [Member]        
Long-term Debt Instruments [Line Items]        
Debt Instrument, Face Amount   $ 250,000,000    
Long-term Debt, Percentage Bearing Variable Interest, Percentage Rate   1.16%   1.20%
Debt Instrument, Fee   $ 0.0098    
Prudential Facility [Domain]        
Long-term Debt Instruments [Line Items]        
Long-term Debt   $ 90,000,000    
Prudential Facility [Domain] | Minimum [Member]        
Long-term Debt Instruments [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage   0.25%    
Prudential Facility [Domain] | Maximum [Member]        
Long-term Debt Instruments [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage   1.25%    
Prudential Facility - Series C [Member]        
Long-term Debt Instruments [Line Items]        
Debt Instrument, Face Amount   $ 120,000,000    
Long-term Debt   $ 40,000,000   $ 40,000,000
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate   3.19%    
Prudential Facility - Series D [Member]        
Long-term Debt Instruments [Line Items]        
Debt Instrument, Face Amount   $ 50,000,000    
Long-term Debt   $ 25,000,000   25,000,000
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate   3.21%    
Prudential Facility - Series E [Member] [Member]        
Long-term Debt Instruments [Line Items]        
Long-term Debt   $ 25,000,000   25,000,000
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate   3.08%    
State of Ohio Assumed Debt [Member]        
Long-term Debt Instruments [Line Items]        
Debt Instrument, Face Amount   $ 2,359,000    
Long-term Debt   $ 664,000   846,000
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate   1.50%    
Revolving Credit Facility [Member]        
Long-term Debt Instruments [Line Items]        
Line of Credit Facility, Maximum Borrowing Capacity   $ 900,000,000    
Debt Instrument, Face Amount   500,000,000    
Letters of Credit Outstanding, Amount   200,000   200,000
Line of Credit Facility, Remaining Borrowing Capacity   $ 457,208,000   $ 249,800,000
Long-term Debt, Percentage Bearing Variable Interest, Percentage Rate   1.30%    
Revolving Credit Facility [Member] | Minimum [Member]        
Long-term Debt Instruments [Line Items]        
Variable interest rate, base rate plus margin   0.00%    
Variable interest rate, LIBOR plus margin   8000.00%    
Revolving Credit Facility [Member] | Maximum [Member]        
Long-term Debt Instruments [Line Items]        
Variable interest rate, base rate plus margin   5500.00%    
Variable interest rate, LIBOR plus margin   15500.00%