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Derivative Financial Instruments and Hedging Activities (Tables) | 12 Months Ended
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Dec. 31, 2016
Derivative Instruments And Hedging Activities Disclosure [Abstract] |
Summary of Outstanding Derivative Financial Instruments | The Company had the following outstanding derivative financial instruments used for oil and natural gas price risk management:
Commodity and Derivative Type |  | Weighted-Average Contract Price |  |  | Contract Volume (MMBtu) |  | Contract Period |
December 31, 2015: |  |  |  |  |  |  |  |
Natural Gas Swap Agreements |  | $3.20 per MMBtu |  |  | 1,800,000 |  | 2016 |
December 31, 2016: |  |  |  |  |  |  |  |
Natural Gas Swap Agreements |  | $3.37 per MMBtu |  |  | 23,400,000 |  | 2017 |

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