Revolving Credit Facility and Long-Term Debt - Financial Covenants (Details) - Credit Agreement	9 Months Ended
Sep. 30, 2017 USD ($)
Debt Instrument [Line Items]
Consolidated EBITDA	$ 0
Consolidated Net Income	0
Facility Capital Expenditures	$ 30,000,000
July 1, 2017 through December 31, 2017
Debt Instrument [Line Items]
Consolidated Total Leverage Ratio	3.75
January 1, 2018 through March 31, 2018
Debt Instrument [Line Items]
Consolidated Total Leverage Ratio	3.5
April 1, 2018 and thereafter
Debt Instrument [Line Items]
Consolidated Total Leverage Ratio	3.25

Line of Credit Facility, Covenant Terms, Facility Capital Expenditures, Next Twelve Months, Maximum

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- Definition

Line of Credit Facility, Covenant Terms, Consolidated Ebitda To Fixed Charges Ratio, Minimum1

+ References

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- Definition

Line of Credit Facility, Covenant Terms, Consolidated Net Income, Minimum

+ References

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- Definition

Line of Credit Facility, Covenant Terms, Consolidated Total Leverage Ratio, Maximum

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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