Selected Quarterly Financial Data (Tables)

12 Months Ended

Dec. 31, 2016

Quarterly Financial Data [Abstract]

Quarterly Financial Information

	Predecessor												Successor
	Periods Ended												Period Ended
(in thousands)	March 31			June 30			September 30			October 1, 2016 through October 10, 2016			October 11, 2016 through December 31, 2016
2016
Revenues	$	15,121		$	23,347		$	27,321		$	3,327		$	29,717
Operating expenses	29,855			30,251			32,228			183,465			36,800
Gain (loss) on sale of oil and natural gas properties	(4		)	—			15			—			24
Operating loss	(14,738		)	(6,904		)	(4,892		)	(180,138		)	(7,059		)
Other income (expense)	277			(9,635		)	(242		)	(2,858		)	(1,926		)
Income tax expense (benefit)	—			406			—			—			—
Net loss	(14,461		)	(16,133		)	(5,134		)	(182,996		)	(8,081		)
Loss per share:
Basic													$	(0.05	)
Diluted													$	(0.05	)

	Predecessor
	Quarters Ended
(in thousands)	March 31			June 30			September 30			December 31
2015
Revenues	$	24,416		$	22,431		$	21,893		$	21,720
Operating expenses	36,656			37,184			30,442			42,024
Gain (loss) on sale of oil and natural gas properties	2,675			4			9			(249		)
Operating loss	(9,565		)	(14,749		)	(8,540		)	(20,553		)
Other income (expense)	3,628			(7,922		)	11,866			6,938
Income tax expense	—			—			—			572
Net (loss) income	(5,937		)	(22,671		)	3,326			(13,043		)