Long-Term Debt (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Jun. 30, 2019
Long-term Debt Current and Noncurrent
Long-term Debt, Including Current Maturities	$ 598,204	$ 597,949
Debt Issuance Costs, Net	(4,121)	(5,475)
Long-term Debt, Current Maturities [Abstract]
Long-term Debt, Less Current Maturities	594,083	592,474
3.875% Senior Unsecured Notes Due in 2022 [Member]
Long-term Debt Current and Noncurrent
Long-term Debt	299,940	299,903
4.625% Senior Unsecured Notes Due in 2028
Long-term Debt Current and Noncurrent
Long-term Debt	$ 298,264	$ 298,046

Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Amount of long-term debt and lease obligation, classified as noncurrent.

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Amount of long-term debt and lease obligation, including portion classified as current.

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