Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Successor [Member]
Capitalized Costs, Unproved Properties	$ 33,354
Preferred stock, par value (in dollars per share)	$ 0.01
Preferred stock, shares authorized	10,000,000
Preferred stock, shares outstanding	0
Common stock, par value per share (in dollars per share)	$ 0.01
Common stock, shares authorized	40,000,000
Common stock, shares issued	10,076,059
Common stock, shares outstanding	10,053,574
Treasury stock shares held, at cost	22,485
Predecessor [Member]
Capitalized Costs, Unproved Properties		$ 18,839
Common stock, par value per share (in dollars per share)		$ 0.01
Common stock, shares authorized		150,000,000
Common stock, shares issued		44,771,258
Common stock, shares outstanding		44,591,863
Treasury stock shares held, at cost		179,395