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Long-Term Debt - Additional Information (Details) (USD $)
In Millions, unless otherwise specified |
6 Months Ended | 12 Months Ended |
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Jun. 30, 2014
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Dec. 31, 2013
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| Debt Instrument [Line Items] | ||
| Senior notes interest rate | 8.50% | 8.50% |
| Senior notes payment terms | Interest on the 8.50% Senior Notes is payable semi-annually in arrears on June 15 and December 15. | Interest on the 8.50% Senior Notes is payable semi-annually in arrears on June 15 and December 15. |
| Senior notes maturity date | Jun. 15, 2019 | |
| Letters of credit outstanding | $ 0.6 | $ 0.4 |
| Revolving bank credit facility borrowing base | 750.0 | |
| Line of credit, borrowing availability | $ 439.4 | |
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Revolving Credit Facility
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| Debt Instrument [Line Items] | ||
| Effective interest rate | 2.90% | |
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Credit Agreement
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| Debt Instrument [Line Items] | ||
| Credit agreement expiration date | Nov. 08, 2018 | |
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Senior Notes
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| Debt Instrument [Line Items] | ||
| Effective interest rate | 8.40% | 8.40% |
| X | ||||||||||
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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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- Details
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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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| X | ||||||||||
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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
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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| X | ||||||||||
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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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