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Debt:2030 Notes (Details) - USD ($) $ in Thousands		6 Months Ended		12 Months Ended
	Jul. 27, 2020	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2016	Mar. 30, 2016
Subsequent Event [Line Items]
Repayments of Long-term Debt		$ 0	$ 5,500
Term Loan Due 2026 [Member]
Subsequent Event [Line Items]
Debt Instrument, Face Amount					$ 75,000
Repayments of Long-term Debt				$ 30,000
Subsequent Event [Member] | 4.875% Senior Notes Due 2030 [Member]
Subsequent Event [Line Items]
Interest rate	4.875%
Subsequent Event [Member] | 4.875% Senior Notes Due 2030 [Member] | Senior Notes [Member]
Subsequent Event [Line Items]
Debt Instrument, Face Amount	$ 400,000
Subsequent Event [Member] | Term Loan Due 2026 [Member]
Subsequent Event [Line Items]
Repayments of Long-term Debt	$ 45,000

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