Employee Benefits (Schedule Of Net Benefit Costs And Amounts Recognized In Other Comprehensive Income) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Defined Benefit Plan Disclosure [Line Items]
Amortization of net loss	$ (2,663)	$ (924)	$ (2,712)
Settlement benefits	(355)	0	0
U. S. Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	29	334	1,091
Interest cost	2,015	2,322	2,047
Expected return on plan assets	(2,960)	(3,140)	(2,854)
Net amortization	1,270	571	2,255
Settlement benefits	355	0	0
Net periodic benefit cost	709	87	2,539
Net loss (gain) emerging	898	9,352	(12,468)
Amortization of net loss	(1,270)	(274)	(1,958)
Amortization of prior service cost	0	(297)	(297)
Settlement benefits	(355)	0	0
Total recognized in OCI	(727)	8,781	(14,723)
Total net periodic benefit cost and OCI	(18)	8,868	(12,184)
Non-U. S. Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	1,661	602
Interest cost	2,110	1,366
Expected return on plan assets	0	0
Net amortization	1,048	0
Settlement benefits	0	0
Net periodic benefit cost	4,819	1,968
Net loss (gain) emerging	(17,310)	15,425
Amortization of net loss	(1,048)	0
Amortization of prior service cost	0	0
Settlement benefits	0	0
Total recognized in OCI	(18,358)	15,425
Total net periodic benefit cost and OCI	(13,539)	17,393
Post-Retirement Healthcare Benefit Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	22	22	30
Interest cost	571	733	623
Net amortization	345	353	457
Net periodic benefit cost	938	1,108	1,110
Net loss (gain) emerging	(1,848)	989	(501)
Amortization of net loss	(345)	(303)	(373)
Amortization of prior service cost	0	(50)	(84)
Total recognized in OCI	(2,193)	636	(958)
Total net periodic benefit cost and OCI	$ (1,255)	$ 1,744	$ 152