Long-Term Debt - Additional Information (Details) - USD ($)
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1 Months Ended |
9 Months Ended |
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May. 31, 2015 |
Sep. 30, 2015 |
Sep. 30, 2014 |
Mar. 31, 2015 |
Dec. 31, 2014 |
Mar. 31, 2014 |
| Debt Instrument [Line Items] |
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| Reduction of base rate |
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33.00%
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| Mortgaged collateral requirement |
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90.00%
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80.00%
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| Percentage of oil and natural gas production for the second half of 2015 |
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25.00%
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| Percentage of oil and natural gas production to be hedged for 2016 |
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35.00%
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| Debt issuance costs write-off/amortization of debt items |
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$ 2,862,000
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$ 537,000
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| Minimum | First Quarter of 2015 |
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| Debt Instrument [Line Items] |
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| Current ratio |
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75.00%
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| Minimum | Second Quarter of 2015 |
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| Debt Instrument [Line Items] |
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| Current ratio |
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75.00%
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| Minimum | Third Quarter of 2015 |
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| Debt Instrument [Line Items] |
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| Current ratio |
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75.00%
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| Minimum | Fourth Quarter of 2015 |
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| Debt Instrument [Line Items] |
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| Current ratio |
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75.00%
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| Minimum | Fourth Quarter of 2015 and Thereafter |
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| Debt Instrument [Line Items] |
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| Current ratio |
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100.00%
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| Minimum | First Quarter of 2015 and Thereafter |
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| Debt Instrument [Line Items] |
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| Interest coverage ratio |
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220.00%
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| Maximum | Second Quarter of 2016 |
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| Debt Instrument [Line Items] |
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| Leverage ratio |
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500.00%
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| Maximum | Third Quarter of 2016 |
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| Debt Instrument [Line Items] |
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| Leverage ratio |
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450.00%
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| Maximum | Fourth Quarter of 2016 and Thereafter |
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| Debt Instrument [Line Items] |
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| Leverage ratio |
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400.00%
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| Maximum | First Quarter of 2015 and Thereafter |
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| Debt Instrument [Line Items] |
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| First lien leverage ratio |
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250.00%
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| Secured debt leverage ratio |
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350.00%
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| 8.50% Senior Notes due June 2019 |
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| Debt Instrument [Line Items] |
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| Debt instrument interest rate |
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8.50%
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8.50%
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| Debt instrument payment terms |
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semi-annually in arrears on June 15 and December 15
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| Effective interest rate |
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8.40%
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8.40%
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| Debt instrument maturity date |
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Jun. 15, 2019
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| 9.00% Term Loan due 2020 |
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| Debt Instrument [Line Items] |
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| Debt instrument interest rate |
9.00%
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9.00%
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| Debt instrument payment terms |
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Interest on the 9.00% Term Loan is payable in arrears semi-annually on May 15 and November 15
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| Effective interest rate |
9.70%
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| Term loan |
$ 300,000,000
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$ 300,000,000
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| Debt instruments, discount rate |
1.00%
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| 9.00% Term Loan due 2020 | Chief Executive Officer |
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| Debt Instrument [Line Items] |
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| Debt instrument, principal commitment amount |
$ 5,000,000
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| Revolving Bank Credit Facility Due November 2018 |
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| Debt Instrument [Line Items] |
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| Effective interest rate |
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3.30%
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| Credit agreement expiration date |
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Nov. 08, 2018
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| Letters of credit outstanding |
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$ 900,000
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$ 900,000
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| Revolving bank credit facility maximum lender commitment |
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500,000,000
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| Line of credit, borrowing availability |
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$ 234,100,000
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| Borrowings under Credit Agreement margin increase |
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0.50%
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| Credit facility interest rate description |
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Borrowings under the Credit Agreement was increased by 50 basis points (0.5%) on an annual basis. The London Interbank Offered Rate (?LIBOR?) based borrowings margins range from 2.25% to 3.25% and alternate base rate borrowings margins range from 1.25% to 2.25%.
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| Revolving bank credit facility borrowing base |
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$ 500,000,000
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| Line of credit facility description |
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We are restricted on making distributions or repurchasing the existing 8.50% Senior Notes, the 9.00% Term Loan or other permitted indebtedness (i) until June 30, 2016, (ii) if an event of default is continuing or would result from such distribution or (iii) if a borrowing base deficiency is continuing or would result therefrom; provided that the restriction in clause (i) of this sentence does not apply to (A) scheduled payments of interest, principal or redemptions on the Company’s existing 8.50% Senior Notes, the 9.00% Term Loan or other permitted additional debt and (B) the redemption or repurchase by the Company of its outstanding indebtedness in an aggregate principal amount equal to the aggregate principal amount of any new indebtedness, provided that any such new notes are not subject to covenants and events of default that are, taken as a whole, materially more restrictive on the Company.
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| Debt issuance costs write-off/amortization of debt items |
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$ 2,000,000
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| Revolving Bank Credit Facility Due November 2018 | Minimum | London Interbank Offered Rate (LIBOR) |
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| Debt Instrument [Line Items] |
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| Debt instrument, basis spread on variable rate |
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2.25%
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| Revolving Bank Credit Facility Due November 2018 | Minimum | Alternate Base Rate |
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| Debt Instrument [Line Items] |
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| Debt instrument, basis spread on variable rate |
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1.25%
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| Revolving Bank Credit Facility Due November 2018 | Maximum | London Interbank Offered Rate (LIBOR) |
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| Debt Instrument [Line Items] |
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| Debt instrument, basis spread on variable rate |
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3.25%
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| Revolving Bank Credit Facility Due November 2018 | Maximum | Alternate Base Rate |
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| Debt Instrument [Line Items] |
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| Debt instrument, basis spread on variable rate |
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2.25%
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