Long-Term Debt - Additional Information (Details) - USD ($) |
3 Months Ended | ||||
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Apr. 23, 2015 |
Mar. 31, 2015 |
Apr. 30, 2015 |
Dec. 31, 2014 |
Mar. 31, 2014 |
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| Debt Instrument [Line Items] | |||||
| Senior notes interest rate | 8.50% | ||||
| 8.50% Senior Notes | |||||
| Debt Instrument [Line Items] | |||||
| Senior notes interest rate | 8.50% | 8.50% | |||
| Senior notes payment terms | semi-annually in arrears on June 15 and December 15 | ||||
| Effective interest rate | 8.40% | 8.40% | |||
| Senior notes maturity date | Jun. 15, 2019 | ||||
| Revolving Bank Credit Facility Due November 2018 | |||||
| Debt Instrument [Line Items] | |||||
| Effective interest rate | 3.20% | ||||
| Credit agreement expiration date | Nov. 08, 2018 | ||||
| Letters of credit outstanding | $ 600,000 | $ 600,000 | |||
| Revolving bank credit facility maximum lender commitment | 750,000,000 | ||||
| Line of credit, borrowing availability | $ 235,400,000 | ||||
| Revolving Bank Credit Facility Due November 2018 | Subsequent Event | |||||
| Debt Instrument [Line Items] | |||||
| Credit agreement expiration date | Nov. 08, 2018 | ||||
| Revolving bank credit facility borrowing base | $ 600,000,000 | $ 600,000,000 |
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- Definition Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium. 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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- Definition Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Description of the payment terms of the debt instrument (for example, whether periodic payments include principal and frequency of payments) and discussion about any contingencies associated with the payment. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The total amount of the contingent obligation under letters of credit outstanding as of the reporting date. No definition available.
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- Definition Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Date the credit facility terminates, in CCYY-MM-DD format. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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