Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Successor [Member]
Capitalized Costs, Unproved Properties	$ 50,377	$ 33,354
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, shares outstanding	0	0
Common stock, par value per share (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized	40,000,000	40,000,000
Common stock, shares issued	11,621,385	10,076,059
Common stock, shares outstanding	11,570,621	10,053,574
Treasury stock shares held, at cost	50,764	22,485