Derivative Financial Instruments (Details 3) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Summary of location and aggregate fair value of all derivative financial instruments recorded in the consolidated statements of operations
Realized gain (loss) on derivatives	$ 9,482	$ 2,334	$ (4,321)
Unrealized (loss) gain on derivatives	(53,727)	65,085	9,715
Revenues
Summary of location and aggregate fair value of all derivative financial instruments recorded in the consolidated statements of operations
Realized gain (loss) on derivatives	9,482	2,334	(4,321)
Unrealized (loss) gain on derivatives	(53,727)	65,085	9,715
Total	(44,245)	67,419	5,394
Oil | Revenues
Summary of location and aggregate fair value of all derivative financial instruments recorded in the consolidated statements of operations
Realized gain (loss) on derivatives	9,026	3,741	(3,657)
Unrealized (loss) gain on derivatives	(53,443)	65,991	2,638
Natural Gas | Revenues
Summary of location and aggregate fair value of all derivative financial instruments recorded in the consolidated statements of operations
Realized gain (loss) on derivatives	456	(1,407)	(608)
Unrealized (loss) gain on derivatives	(284)	(906)	7,077
NGLs | Revenues
Summary of location and aggregate fair value of all derivative financial instruments recorded in the consolidated statements of operations
Realized gain (loss) on derivatives	$ 0	$ 0	$ (56)