Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2018

Fair Value Disclosures [Abstract]

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

The following table presents the Company’s assets and liabilities that are measured at fair value on a recurring basis as of March 31, 2018 and December 31, 2017, for each fair value hierarchy level:

	Fair Value Measurements Using
In thousands	Quoted Prices                    in Active Markets (Level 1)			Significant Other Observable Inputs (Level 2)			Significant Unobservable Inputs (Level 3)			Total
March 31, 2018 (unaudited)
Assets
Commodity derivatives	$	—		$	630		$	—		$	630
Liabilities:
Commodity derivatives	$	—		$	(30,338	)	$	—		$	(30,338	)
Warrant		—			—			(1,623	)		(1,623	)
Deferred compensation		(107	)		—			(442	)		(549	)
Total	$	(107	)	$	(29,708	)	$	(2,065	)	$	(31,880	)
December 31, 2017
Assets:
Commodity derivatives	$	—		$	472		$	—		$	472
Liabilities:
Commodity derivatives	$	—		$	(22,138	)	$	—		$	(22,138	)
Warrant		—			—			(1,471	)		(1,471	)
Deferred compensation		—			—			(314	)		(314	)
Total	$	—		$	(21,666	)	$	(1,785	)	$	(23,451	)

Summary of Changes in Fair Value for the Level 3 Liabilities

The table below sets forth a summary of changes in the fair value of the Company’s Level 3 liabilities for the three months ended March 31, 2018:

In thousands	Warrant			Deferred Compensation			Total
Balance as of December 31, 2017	$	(1,471	)	$	(314	)	$	(1,785	)
Unrealized losses		(152	)		(128	)		(280	)
Balance as of March 31, 2018 (unaudited)	$	(1,623	)	$	(442	)	$	(2,065	)