CONSOLIDATED BALANCE SHEET (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Other property and equipment, accumulated depreciation	$ 2,561
Other assets, accumulated depreciation and amortization	$ 0
Common stock, par value (in usd per share)	$ 0.01
Common stock, shares authorized (in shares)	60,000,000
Common stock, shares issued (in shares)	19,998,019
Treasury stock, shares (in shares)	0
Predecessor
Other property and equipment, accumulated depreciation		$ 27,418
Other assets, accumulated depreciation and amortization		$ 5,360
Common stock, par value (in usd per share)		$ 0.01
Common stock, shares authorized (in shares)		30,000,000
Common stock, shares issued (in shares)		5,610,020
Treasury stock, shares (in shares)		1,658