Income Taxes Income Taxes - Provision for Income Taxes Charged To Income From Continuing Operations (Details) - Successor [Member] - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Provision for Income Taxes [Line Items]
Current Federal Tax Expense (Benefit)	$ 0	$ 617	$ 0	$ 617
Income (Loss) from Continuing Operations before Income Taxes, Domestic	13,104	(25,177)	310,846	(217,050)
Current Income Tax Expense (Benefit)	3,189	6,882	4,187	26,463
Deferred Foreign Income Tax Expense (Benefit)	(1,194)	0	413	0
Deferred Income Tax Expense (Benefit)	(1,194)	0	413	0
Income Tax Expense (Benefit)	1,995	6,882	4,600	26,463
Income (Loss) from Continuing Operations before Income Taxes, Foreign	(6,796)	39,169	3,771	125,182
Pre-tax income (loss)	6,308	13,992	314,617	(91,868)
Current State and Local Tax Expense (Benefit)	645	(320)	1,682	0
Current Foreign Tax Expense (Benefit)	$ 2,544	$ 6,585	$ 2,505	$ 25,846