Summary of Significant Accounting Policies - Summary of Accrued Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Accrued Liabilities Current [Abstract]
Ad valorem and production taxes	$ 13,625	$ 14,231
Employee compensation	4,257	6,628
Royalties	8,557	3,196
Short term derivatives	35,409
Other	2,302	1,407
Total accrued liabilities	$ 64,150	$ 25,462