Derivative Instruments (Tables)

9 Months Ended

Sep. 30, 2018

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of Company's Open Commodity Contracts

The following table reflects the Company’s open commodity contracts at September 30, 2018:

	2018		2019		2020		Total
Oil fixed price swaps
Volume (Bbl)	1,233,180		5,540,670		1,599,500		8,373,350
Weighted-average price	$	57.09	$	59.86	$	63.14	$	60.08
Natural gas fixed price swaps
Volume (MMBtu)	8,004,000		29,200,000		12,325,000		49,529,000
Weighted-average price	$	2.94	$	2.86	$	2.63	$	2.81
Natural gas basis swaps
Volume (MMBtu)	4,600,000		21,900,000		3,640,000		30,140,000
Weighted-average price	$	0.54	$	0.58	$	0.62	$	0.58

Schedule of Net Gains and Loss on Derivative Contracts

The following table presents the Company’s (loss) gain on derivative contracts and net cash (paid) received upon settlement of its derivative contracts for the three and nine months ended September 30, 2018 and 2017:

	Three Months Ended September 30,					Nine Months Ended September 30,
	2018			2017		2018			2017
	(in thousands)
(Loss) gain on derivative contracts	$	(36,704	)	$	131	$	(100,920	)	$	2,385
Net cash (paid) received upon settlement of derivative contracts	$	(13,551	)	$	2,255	$	(27,462	)	$	2,385
Net cash received upon settlement of derivative contracts prior to contractual maturity	$	—		2,255		$	377		$	2,255