Long-Term Debt - Schedule Of Unrestricted Cash And Cash Equivalents (Details) - USD ($)	Dec. 31, 2017	Jun. 30, 2017
Debt Instrument [Line Items]
Minimum Cash	$ 100,000,000
Greater Than or Equal to 4.00x [Member] | Amended and Restated Credit Agreement [Member]
Debt Instrument [Line Items]
Minimum Cash		$ 100,000,000.00
Greater Than or Equal to 3.50x But Less Than 4.00x [Member] | Amended and Restated Credit Agreement [Member]
Debt Instrument [Line Items]
Minimum Cash		50,000,000.00
Less Than 3.50x [Member] | Amended and Restated Credit Agreement [Member]
Debt Instrument [Line Items]
Minimum Cash		$ 0.00