Accrued Liabilities and Other - Schedule of Accrued Liabilities and Other (Detail) - USD ($) $ in Thousands		Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Accrued Liabilities and Other Liabilities [Abstract]
Prepaid advances from joint interest owners		$ 34,511	$ 57,861
Accrued compensation		65,308	38,046
Accrued production taxes, ad valorem taxes and other non-income taxes		40,611	22,053
Accrued interest		55,282	52,657
Accrued litigation settlement		59,600	0
Current portion of asset retirement obligations	[1]	2,612	1,742	$ 1,658
Other		2,150	4,411
Accrued liabilities and other		$ 260,074	$ 176,770

[1] Balance is included in the caption “Accrued liabilities and other” in the consolidated balance sheets.