Fair Value Measurements of Financial Instruments (Tables)

6 Months Ended

Jun. 30, 2019

Fair Value Disclosures [Abstract]

Assets and Liabilities Measured at Fair Value on Recurring Basis

The following table presents the gross derivative assets and liabilities that are measured at fair value on a recurring basis at June 30, 2019 and December 31, 2018 for each of the fair value hierarchy levels:

	Fair Value Measurements at June 30, 2019 Using
	Quoted Prices in		Significant Other		Significant
	Active Market		Observable Inputs		Unobservable Inputs
	(Level 1)		(Level 2)		(Level 3)		Fair Value
	(In thousands)
Assets:
Commodity derivatives	$	—	$	21,045	$	—	$	21,045
Interest rate derivatives		—		13		—		13
Total assets	$	—	$	21,058	$	—	$	21,058
Liabilities:
Commodity derivatives	$	—	$	7,488	$	—	$	7,488
Interest rate derivatives		—		592		—		592
Total liabilities	$	—	$	8,080	$	—	$	8,080

	Fair Value Measurements at December 31, 2018 Using
	Quoted Prices in		Significant Other		Significant
	Active Market		Observable Inputs		Unobservable Inputs
	(Level 1)		(Level 2)		(Level 3)		Fair Value
	(In thousands)
Assets:
Commodity derivatives	$	—	$	25,515	$	—	$	25,515
Liabilities:
Commodity derivatives	$	—	$	4,372	$	—	$	4,372