Debt - Components of Interest Expense (Details) - USD ($)	4 Months Ended	8 Months Ended	12 Months Ended
	Dec. 31, 2017	Aug. 31, 2017	Dec. 31, 2018	Dec. 31, 2016
Debt
Amortization of deferred financing costs			$ 200,000
Total interest expense	$ 19,270,340		37,900,000
Related party interest expense			$ 700,000
Predecessor
Debt
Amortization of deferred financing costs		$ 2,800,000		$ 4,000,000
Capitalized interest		(1,100,000)		(1,000,000)
Total interest expense		$ 51,700,000.0		$ 78,200,000