Share-Based Compensation Expense and Related Tax Benefit (Details) - USD ($) $ in Thousands	1 Months Ended	11 Months Ended	12 Months Ended
	Dec. 31, 2018	Nov. 19, 2018	Dec. 31, 2019	Dec. 31, 2017
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation expense	$ 599	$ 2,543	$ 7,071	$ 6,819
Tax expense (benefit)	(126)		(1,098)	(1,147)
Total	473	2,543	5,973	5,672
Operating expenses
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation expense		177	1,460	416
General and administrative expenses
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation expense	$ 599	$ 2,366	$ 5,611	$ 6,403