Derivative Instruments - Gain (Loss) On Derivative Instruments (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended	12 Months Ended
	Dec. 31, 2016	Oct. 10, 2016	Dec. 31, 2015	Dec. 31, 2014
Successor
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) on derivative instruments	$ (1,548)
Predecessor
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) on derivative instruments		$ (6,838)	$ 20,756	$ 41,943