Retirement Plans And Postretirement Benefits (Fair Value Hierarchy, Assets At Fair Value) (Details) - Retirement Plans [Member] - Fixed Insurance Contracts [Member] - Level 3 [Member] - USD ($) $ in Thousands	5 Months Ended	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2016
Changes in Plan Assets:
Beginning Balance	$ 13,336	$ 10,453
Gain / contributions / currency impact	(2,883)	707
Distributions	0	(18)
Ending Balance	$ 10,453	$ 11,142