Retirement Plans And Postretirement Benefits (Amounts Recognized In Other Comprehensive Income Retirement Plans) (Details) - Predecessor [Member] - Retirement Plans [Member] - USD ($) $ in Thousands	7 Months Ended	12 Months Ended
	Aug. 14, 2015	Dec. 31, 2014	Dec. 31, 2013
U.S. [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of prior service cost	$ 0	$ 0	$ 0
Addition to prior service cost	0	0	0
Effect of exchange rates	0	0	0
Total recognized in other comprehensive income	0	0	0
Total recognized in pension costs and other comprehensive loss	0	19,949	(10,104)
Foreign [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of prior service cost	28	(26)	(25)
Addition to prior service cost	0	0	(246)
Effect of exchange rates	0	8	11
Total recognized in other comprehensive income	28	(18)	(260)
Total recognized in pension costs and other comprehensive loss	$ 28	$ 682	$ 752