Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2019

Fair Value Disclosures [Abstract]

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis

The following tables summarize the Company’s derivative instrument assets and liabilities measured at fair value on a recurring basis as of March 31, 2019 and December 31, 2018:

	March 31, 2019
	Level 1		Level 2			Level 3
	(In thousands)
Assets
Commodity derivative instruments		$—		$3,403			$—
Contingent Niobrara Consideration	—		5,212			—
Contingent Marcellus Consideration	—		888			—
Contingent Utica Consideration	—		6,205			—
Liabilities
Commodity derivative instruments		$—		($45,138	)		$—
Contingent ExL Consideration	—		(59,583		)	—

	December 31, 2018
	Level 1		Level 2			Level 3
	(In thousands)
Assets
Commodity derivative instruments		$—		$31,751			$—
Contingent Niobrara Consideration	—		7,035			—
Contingent Marcellus Consideration	—		1,369			—
Contingent Utica Consideration	—		7,501			—
Liabilities
Commodity derivative instruments		$—		($15,438	)		$—
Contingent ExL Consideration	—		(80,584		)	—

Fair Value, Assets and Liabilities Measured on Recurring Basis, Level 3 Reconciliation

Schedule of Carrying Value and Fair Value of Debt Instruments

The following table presents the principal amounts of the Company’s senior notes and other long-term debt with the fair values measured using quoted secondary market trading prices which are designated as Level 1 within the valuation hierarchy. See “Note 7. Long-Term Debt” for additional discussion.

	March 31, 2019				December 31, 2018
	Principal Amount		Fair Value		Principal Amount		Fair Value
	(In thousands)
6.25% Senior Notes due 2023		$650,000		$639,438		$650,000		$599,625
8.25% Senior Notes due 2025	250,000		258,750		250,000		244,375