Income Taxes Income Taxes - Reconciliation of Unrecognized Tax Benefits (Details) - USD ($) $ in Thousands	4 Months Ended	8 Months Ended	12 Months Ended
	Apr. 30, 2013	Dec. 31, 2013	Dec. 31, 2015	Dec. 31, 2014
Reconciliation of Unrecognized Tax Benefits [Line Items]
Unrecognized Tax Benefits, Interest on Income Taxes Accrued	$ 0	$ 0	$ 0	$ 0
Reconciliation of Unrecognized Tax Benefits [Roll Forward]
UnrecognizedTaxBenefitsInterestOnIncomeTaxesPaid	0	0	0	0
Successor [Member]
Reconciliation of Unrecognized Tax Benefits [Roll Forward]
Unrecognized Tax Benefits		0	0	0
Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions		0	0	0
Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions		0	0	0
Unrecognized Tax Benefits	0	0	$ 0	$ 0
Predecessor [Member]
Reconciliation of Unrecognized Tax Benefits [Roll Forward]
Unrecognized Tax Benefits	96,900	$ 0
Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions	0
Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions	(96,900)
Unrecognized Tax Benefits	$ 0