Fair Value Measurements and Derivative Instruments (Carrying amounts and fair value of the financial instruments) (Details) - USD ($) $ in Thousands |
Jun. 30, 2016 |
Dec. 31, 2015 |
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| Senior Notes Due 2021 | Senior Notes | ||
| Debt Instrument [Line Items] | ||
| Debt stated percentage | 6.75% | |
| Senior Notes Due 2025 | Senior Notes | ||
| Debt Instrument [Line Items] | ||
| Debt stated percentage | 6.875% | |
| Carrying Value [Member] | ||
| Debt Instrument [Line Items] | ||
| Current and long-term debt | $ 1,348,254 | $ 1,332,739 |
| Fair Value [Member] | ||
| Debt Instrument [Line Items] | ||
| Current and long-term debt | $ 1,400,504 | $ 1,390,743 |
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- Definition Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Contractual interest rate for funds borrowed, under the debt agreement. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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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. No definition available.
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