Debt (Textuals) (Details) - USD ($)	3 Months Ended	6 Months Ended
	Dec. 31, 2021	Dec. 31, 2021	Dec. 31, 2020	Jun. 30, 2021
Long-term Debt Instruments [Line Items]
Letters of Credit Outstanding, Amount	$ 4,772,000	$ 4,772,000		$ 4,540,000
Long-term debt repayments	98,206,000	550,371,000	$ 72,260,000
Payment of debt issuance costs		(1,794,000)	$ 0
Debt Issuance Costs, Gross, Current	540,000	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	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	$ 250,000,000
Long-term Debt, Percentage Bearing Variable Interest, Percentage Rate	1.07%	1.07%		1.20%
Debt Instrument, Fee	$ 0.0098	$ 0.0098
Prudential Facility [Domain]
Long-term Debt Instruments [Line Items]
Long-term Debt	$ 90,000,000	$ 90,000,000
Prudential Facility [Domain] | Minimum [Member]
Long-term Debt Instruments [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	0.25%	0.25%
Prudential Facility [Domain] | Maximum [Member]
Long-term Debt Instruments [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	1.25%	1.25%
Prudential Facility - Series C [Member]
Long-term Debt Instruments [Line Items]
Debt Instrument, Face Amount	$ 120,000,000	$ 120,000,000
Long-term Debt	$ 40,000,000	$ 40,000,000		$ 40,000,000
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate	3.19%	3.19%
Prudential Facility - Series D [Member]
Long-term Debt Instruments [Line Items]
Debt Instrument, Face Amount	$ 50,000,000	$ 50,000,000
Long-term Debt	$ 25,000,000	$ 25,000,000		25,000,000
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate	3.21%	3.21%
Prudential Facility - Series E [Member] [Member]
Long-term Debt Instruments [Line Items]
Long-term Debt	$ 25,000,000	$ 25,000,000		25,000,000
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate	3.08%	3.08%
State of Ohio Assumed Debt [Member]
Long-term Debt Instruments [Line Items]
Debt Instrument, Face Amount	$ 2,359,000	$ 2,359,000
Long-term Debt	$ 725,000	$ 725,000		846,000
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate	1.50%	1.50%
Revolving Credit Facility [Member]
Long-term Debt Instruments [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	$ 900,000,000	$ 900,000,000
Debt Instrument, Face Amount	500,000,000	500,000,000
Letters of Credit Outstanding, Amount	200,000	200,000		200,000
Line of Credit Facility, Remaining Borrowing Capacity	$ 457,208,000	$ 457,208,000		$ 249,800,000
Long-term Debt, Percentage Bearing Variable Interest, Percentage Rate	1.15%	1.15%
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%