Income Taxes - Components of Income Tax (Provision) 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
Current income tax expense (benefit):
Current income tax expense	$ (262)	$ 1,795	$ 3,633	$ 5,454
Deferred tax expense (benefit):
Deferred tax benefit	(6,507)	(4,103)	8,783	7,409
Income tax expense (benefit)	(6,769)	(2,308)	12,416	12,863
Luxembourg
Current income tax expense (benefit):
Current income tax expense	(292)	866	1,906	2,287
Deferred tax expense (benefit):
Deferred tax benefit	(6,454)	(6,924)	7,914	(321)
United States
Current income tax expense (benefit):
Current income tax expense	90	641	1,323	3,202
Deferred tax expense (benefit):
Deferred tax benefit	15	1,902	(274)	6,145
Other Jurisdictions
Current income tax expense (benefit):
Current income tax expense	(60)	288	404	(35)
Deferred tax expense (benefit):
Deferred tax benefit	$ (68)	$ 919	$ 1,143	$ 1,585