Employee Benefits (Schedule Of Net Benefit Costs And Amounts Recognized In Other Comprehensive Income) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
U. S. Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 334	$ 1,091	$ 1,005
Interest cost	2,322	2,047	2,580
Expected return on plan assets	(3,140)	(2,854)	(2,490)
Net amortization	571	2,255	2,071
Net periodic benefit cost	87	2,539	3,166
Net loss (gain) emerging	9,352	(12,468)	7,765
Curtailment	0	0	(5,484)
Amoritization of net loss	(274)	(1,958)	(1,774)
Amortization of prior service cost	(297)	(297)	(297)
Total recognized in OCI	8,781	(14,723)	210
Total net periodic benefit cost and OCI	8,868	(12,184)	3,376
Non-U. S. Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	602
Interest cost	1,366
Expected return on plan assets	0
Net amortization	0
Net periodic benefit cost	1,968
Net loss (gain) emerging	15,425
Curtailment	0
Amoritization of net loss	0
Amortization of prior service cost	0
Total recognized in OCI	15,425
Total net periodic benefit cost and OCI	17,393
Post-Retirement Healthcare Benefit Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	22	30	9
Interest cost	733	623	745
Net amortization	353	457	269
Net periodic benefit cost	1,108	1,110	1,023
Net loss (gain) emerging	989	(501)	2,021
Amoritization of net loss	(303)	(373)	(185)
Amortization of prior service cost	(50)	(84)	(84)
Total recognized in OCI	636	(958)	1,752
Total net periodic benefit cost and OCI	$ 1,744	$ 152	$ 2,775