Earnings per Share (Tables)

12 Months Ended

Dec. 31, 2019

Earnings Per Share [Abstract]

Income and Share Data Used In Basic and Diluted EPS Computations

	Successor				Predecessor
			Period From		Period From
			November 20, 2018		January 1, 2018
	Year Ended		through		through		Year Ended
	December 31, 2019		December 31, 2018		November 19, 2018		December 31, 2017
(in thousands, except per share information)
Numerator:
Net loss, basic and diluted	$	(556,465)	$	(27,484)	$	(2,154,877)	$	(525,166)
Denominator:
Weighted-average shares outstanding, basic		75,011		75,010		21,359		21,315
Weighted-average shares outstanding, diluted		75,011		75,010		21,359		21,315
Loss per share:
Basic	$	(7.42)	$	(0.37)	$	(100.89)	$	(24.64)
Diluted	$	(7.42)	$	(0.37)	$	(100.89)	$	(24.64)

Share Effects of Share-Based Compensation Awards Excluded from Computations of Diluted EPS

	Successor		Predecessor
		Period From	Period From
	Year Ended	November 20, 2018	January 1, 2018	Year Ended
	December 31,	through	through	December 31,
	2019	December 31, 2018	November 19, 2018	2017
(in thousands)
Share-based compensation awards	797	161	314	349