Long-Term Debt - Schedule Of Unrestricted Cash and Cash Equivalents (Details) - USD ($)	Mar. 31, 2018	Jun. 30, 2017
Debt Instrument [Line Items]
Minimum Cash	$ 100,000,000
Greater than or equal to 4.00 to 1.00 | Amended and Restated Credit Agreement
Debt Instrument [Line Items]
Minimum Cash		$ 100,000,000
Greater than or equal to 3.50 to 1.00 but less than 4.00 to 1.00 | Amended and Restated Credit Agreement
Debt Instrument [Line Items]
Minimum Cash		50,000,000
Less than 3.50 to 1.00 | Amended and Restated Credit Agreement
Debt Instrument [Line Items]
Minimum Cash		$ 0