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Long-Term Debt - Schedule Of Unrestricted Cash and Cash Equivalents (Details) | Jun. 30, 2017 USD ($)
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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

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