Emergence from Bankruptcy and Fresh Start Accounting (Reorganization Items, Net and Contractual Interest Expense During Bankruptcy) (Details) - USD ($) $ in Thousands		3 Months Ended				9 Months Ended	12 Months Ended
	Oct. 01, 2016	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Oct. 01, 2016	Dec. 31, 2015	Dec. 31, 2014
Fresh-Start Adjustment [Line Items]
Gain on settlement of claims	$ 4,142,104
Predecessor [Member]
Fresh-Start Adjustment [Line Items]
Gain on settlement of claims	4,142,104					$ 4,142,104	$ 0	$ 0
Fresh start adjustments						(2,466,010)	0	0
Professional fees						(46,053)	0	0
Reorganization Items	$ 1,676,091		$ (20,904)	$ (21,271)	$ (3,875)	1,630,041	$ 0	$ 0
Contractual interest expense						300,900
Interest Expense						$ 135,900
Successor [Member]
Fresh-Start Adjustment [Line Items]
Gain on settlement of claims		$ 0
Fresh start adjustments		0
Professional fees		(759)
Reorganization Items		$ (759)