Long-Term Debt - Schedule Of Unrestricted Cash and Cash Equivalents (Details) - USD ($)	Sep. 30, 2017	Jun. 30, 2017
Debt Instrument [Line Items]
Minimum Cash	$ 100,000,000
Credit Agreement February 2016 Amendment [Member] | Greater than or equal to 4.00 to 1.00 [Member] | Line of Credit [Member]
Debt Instrument [Line Items]
Minimum Cash		$ 100,000,000.00
Credit Agreement February 2016 Amendment [Member] | Greater than or equal to 3.50 to 1.00 but less than 4.00 to 1.00 [Member] | Line of Credit [Member]
Debt Instrument [Line Items]
Minimum Cash		50,000,000.00
Credit Agreement February 2016 Amendment [Member] | Less than 3.50 to 1.00 [Member] | Line of Credit [Member]
Debt Instrument [Line Items]
Minimum Cash		$ 0.00