Derivative Financial Instruments (Details 2) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Derivative [Line Items]
Oil, natural gas and natural gas liquids (NGL) derivatives	$ 0	$ (24,954)
Summary of gross liability balances of derivative instruments
Oil, natural gas and natural gas liquids (NGL) derivatives	(4,323)	0
Current assets
Derivative [Line Items]
Gross amounts of recognized assets	5,399
Gross amounts netted in the condensed consolidated balance sheets	(3,684)
Oil, natural gas and natural gas liquids (NGL) derivatives	1,715
Other assets
Derivative [Line Items]
Gross amounts of recognized assets	6,137
Gross amounts netted in the condensed consolidated balance sheets	(3,854)
Oil, natural gas and natural gas liquids (NGL) derivatives	2,283
Current liabilities
Summary of gross liability balances of derivative instruments
Gross amounts of recognized liabilities	(12,005)	(24,203)
Gross amounts netted in the condensed consolidated balance sheet	3,684	0
Oil, natural gas and natural gas liquids (NGL) derivatives	(8,321)	(24,203)
Other liabilities
Summary of gross liability balances of derivative instruments
Gross amounts of recognized liabilities	(3,854)	(751)
Gross amounts netted in the condensed consolidated balance sheet	3,854	0
Oil, natural gas and natural gas liquids (NGL) derivatives	$ 0	$ (751)

Fair value of liability associated with financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset.

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