Long-Term Debt - Additional Information (Detail)
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3 Months Ended |
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May. 03, 2016
USD ($)
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Mar. 31, 2016
USD ($)
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Dec. 31, 2015
USD ($)
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| Line of Credit Facility [Line Items] |
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| Senior secured credit facility |
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$ 272,000,000
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$ 273,000,000
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| Senior notes, net |
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226,042,000
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225,839,000
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| Senior Notes [Member] |
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| Line of Credit Facility [Line Items] |
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| Senior notes, net |
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226,042,000
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225,839,000
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| 7% Senior Notes Originated June 11, 2013 [Member] | Senior Notes [Member] |
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| Line of Credit Facility [Line Items] |
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| Senior notes, net |
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$ 250,000,000
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| Stated interest rate |
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7.00%
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| Debt instrument payment of interest |
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Semi-annually on June 15 and December 15.
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| Repurchased senior notes face value |
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19,700,000
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| 7% Senior Notes Originated June 11, 2013 [Member] | Senior Notes [Member] | Debt Instrument, Redemption, Period One [Member] |
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| Line of Credit Facility [Line Items] |
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| Debt instrument redemption description |
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Before June 15, 2016, we may redeem up to 35% of the Senior Notes at a redemption price of 107% of the principal amount, plus accrued and unpaid interest to the redemption date, with the proceeds of certain equity offerings.
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| Debt instrument, redemption percentage |
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35.00%
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| Debt instrument, redemption of principal amount percentage |
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107.00%
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| 7% Senior Notes Originated June 11, 2013 [Member] | Senior Notes [Member] | Debt Instrument, Redemption, Period Two [Member] |
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| Line of Credit Facility [Line Items] |
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| Debt instrument redemption description |
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Before June 15, 2016, we may redeem some or all of the Notes for cash at a redemption price equal to 100% of their principal amount plus an applicable make-whole premium and accrued and unpaid interest to the redemption date.
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| Debt instrument, redemption of principal amount percentage |
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100.00%
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| Senior Secured Credit Facility [Member] |
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| Line of Credit Facility [Line Items] |
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| Senior secured credit facility, borrowing base |
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$ 450,000,000
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| Senior secured facility, maximum borrowing capacity |
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$ 1,000,000,000
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| Maturity period of senior secured credit facility |
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May 07, 2019
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| Senior secured credit facility, interest rate description |
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Borrowings under the Credit Facility bore interest based on the agent bank’s prime rate plus an applicable margin ranging from 0.50% to 1.50%, or the sum of the LIBOR rate plus an applicable margin ranging from 1.50% to 2.50%. In addition, we pay an annual commitment fee ranging from 0.375% to 0.50% of unused borrowings available.
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| Senior secured credit facility |
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$ 272,000,000
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273,000,000
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| Interest rate applicable of senior secured credit facility |
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2.40%
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| Unused letters of credit outstanding |
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$ 300,000
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$ 300,000
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| Production from liens covering the oil and gas properties |
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80.00%
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| Outstanding equity interests ownership percentage |
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50.00%
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| Senior Secured Credit Facility [Member] | Covenants Agreements One [Member] |
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| Line of Credit Facility [Line Items] |
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| Covenant description |
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a consolidated interest coverage ratio covenant (as defined in the Credit Facility) that requires us to maintain a ratio of consolidated EBITDAX to interest as of the last day of any fiscal quarter of not less than 1.25 to 1.0 (or 1.0 to 1.0 following the issuance of second lien indebtedness) on or before December 31, 2017, a ratio of not less than 1.5 to 1.0 through December 31, 2018, and 2.0 to 1.0 thereafter, and
a consolidated modified current ratio covenant (as defined in the Credit Facility) that requires us to maintain a ratio of not less than 1.0 to 1.0 as of the last day of any fiscal quarter.
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| Senior Secured Credit Facility [Member] | Before Second Lien Indebtedness [Member] | Covenants Agreements One [Member] |
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| Line of Credit Facility [Line Items] |
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| Minimum current ratio |
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1.25
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| Senior Secured Credit Facility [Member] | After Second Lien Indebtedness [Member] | Covenants Agreements One [Member] |
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| Line of Credit Facility [Line Items] |
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| Minimum current ratio |
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1.0
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| Senior Secured Credit Facility [Member] | Subsequent Event [Member] |
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| Line of Credit Facility [Line Items] |
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| Senior secured credit facility, borrowing base |
$ 325,000,000
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| Interest coverage ratio, through December 31, 2018 |
1.5
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| Interest coverage ratio, thereafter |
2.0
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| Increase in applicable margin rates on borrowings |
1.00%
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| Second lien indebtedness |
$ 150,000,000
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| Cash and cash equivalents, minimum threshold to reduce outstanding borrowings under credit facility |
$ 35,000,000
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| Senior Secured Credit Facility [Member] | Subsequent Event [Member] | Before Second Lien Indebtedness [Member] |
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| Line of Credit Facility [Line Items] |
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| Interest coverage ratio, through December 31, 2017 |
1.25
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| Senior Secured Credit Facility [Member] | Subsequent Event [Member] | After Second Lien Indebtedness [Member] |
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| Line of Credit Facility [Line Items] |
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| Interest coverage ratio, through December 31, 2017 |
1.0
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| Senior Secured Credit Facility [Member] | Minimum [Member] |
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| Line of Credit Facility [Line Items] |
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| Annual commitment fee of unused borrowings |
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0.375%
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| Senior Secured Credit Facility [Member] | Minimum [Member] | Subsequent Event [Member] |
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| Line of Credit Facility [Line Items] |
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| Production from liens covering the oil and gas properties |
90.00%
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| Senior Secured Credit Facility [Member] | Minimum [Member] | Prime Rate [Member] |
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| Line of Credit Facility [Line Items] |
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| Senior secured credit facility, marginal percentage |
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0.50%
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| Senior Secured Credit Facility [Member] | Minimum [Member] | London Interbank Offered Rate (LIBOR) [Member] |
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| Line of Credit Facility [Line Items] |
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| Senior secured credit facility, marginal percentage |
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1.50%
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| Senior Secured Credit Facility [Member] | Maximum [Member] |
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| Line of Credit Facility [Line Items] |
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| Annual commitment fee of unused borrowings |
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0.50%
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| Senior Secured Credit Facility [Member] | Maximum [Member] | Prime Rate [Member] |
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| Line of Credit Facility [Line Items] |
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| Senior secured credit facility, marginal percentage |
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1.50%
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| Senior Secured Credit Facility [Member] | Maximum [Member] | London Interbank Offered Rate (LIBOR) [Member] |
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| Line of Credit Facility [Line Items] |
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| Senior secured credit facility, marginal percentage |
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2.50%
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