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Commitments and Contingencies - Additional Information (Detail) $ in Thousands |  | 12 Months Ended |
--- | --- | --- | ---
Jul. 06, 2013 defendant | Dec. 31, 2015 USD ($) | Dec. 31, 2014 USD ($) | Dec. 31, 2013 USD ($) | Dec. 31, 2015 MBbls | Dec. 31, 2015 MMcf
Commitments And Contingencies [Line Items] |  |  |  |  |  |
Rental expense |  | $ 7,200 | $ 5,000 | $ 3,000 |  |
Rig termination expense |  | 3,895 | $ 0 | $ 0 |  |
Number of defendants | defendant | 50 |  |  |  |  |
Well completion services equipment and fresh water |  |  |  |  |  |
Commitments And Contingencies [Line Items] |  |  |  |  |  |
Aggregate future commitment amount of purchase agreement |  | $ 42,400 |  |  |  |
Long term commitments |  |  |  |  |  |
Commitments And Contingencies [Line Items] |  |  |  |  |  |
Contract term, maximum |  | 10 years |  |  |  |
Estimated future commitment under supply agreements |  | $ 448,400 |  |  |  |
Crude oil | Long term commitments |  |  |  |  |  |
Commitments And Contingencies [Line Items] |  |  |  |  |  |
Minimum quantity of delivery | MBbls |  |  |  |  | 35,000 |
Natural gas | Long term commitments |  |  |  |  |  |
Commitments And Contingencies [Line Items] |  |  |  |  |  |
Minimum quantity of delivery |  |  |  |  | 23,000 | 223,000
Drilling contracts |  |  |  |  |  |
Commitments And Contingencies [Line Items] |  |  |  |  |  |
Term of contract |  | 1 year |  |  |  |
Payments upon early contract termination |  | $ 5,700 |  |  |  |

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