Condensed Consolidating Financial Information - (Details) - USD ($) |
Dec. 31, 2015 |
Sep. 18, 2015 |
Apr. 21, 2015 |
Dec. 31, 2014 |
[1] | Aug. 18, 2014 |
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Condensed Financial Statements, Captions [Line Items] | ||||||||||||
Long-tern debt | $ 951,653,000 | $ 10,000,000.0 | ||||||||||
Senior Notes | ||||||||||||
Condensed Financial Statements, Captions [Line Items] | ||||||||||||
Long-tern debt | $ 600,000,000 | [1] | $ 600,000,000 | $ 600,000,000.0 | [2] | |||||||
Stated interest rate | 7.75% | |||||||||||
Notes Due 2023 | Senior Notes | ||||||||||||
Condensed Financial Statements, Captions [Line Items] | ||||||||||||
Stated interest rate | 6.625% | |||||||||||
Debt Instrument, Face Amount | $ 350,000,000.0 | |||||||||||
Guarantors | ||||||||||||
Condensed Financial Statements, Captions [Line Items] | ||||||||||||
Other ownership interest, percentage | 100.00% | |||||||||||
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