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Accrued Liabilities - Components of Accrued Liabilities (Detail) - USD ($) $ in Thousands | Dec. 31, 2015 | Dec. 31, 2014
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Payables and Accruals [Abstract] |  |
Accrued capital costs | $ 110,313 | $ 361,034
Accrued lease operating expenses | 18,448 | 26,706
Accrued general and administrative expenses | 18,404 | 12,225
Accrued well services and midstream operating expenses | 13,517 | 4,845
Other accrued liabilities | 6,987 | 5,569
Total accrued liabilities | $ 167,669 | $ 410,379

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