Retirement Plans (Schedule Of Net Periodic Benefit Costs) (United States) (Details) (United States Pension Plans of US Entity, Defined Benefit [Member], USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
United States Pension Plans of US Entity, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 31	$ 30	$ 31
Interest cost	748	799	264
Expected return on plan assets	(810)	(764)	(286)
Amortization of prior service cost	1	1
Recognized net actuarial gain/loss	194	111	106
Net periodic benefit cost	164	177	115
Projected benefit obligation: Discount rate	4.00%	4.50%
Net periodic benefit costs: Discount rate	4.00%	5.48%	6.00%
Net periodic benefit costs: Expected return on plan assets	6.50%	6.70%	7.75%
Projected benefit obligation	18,034	16,986	14,955
Accumulated benefit obligation	18,034	16,986
Fair value of plan assets	$ 13,262	$ 12,088	$ 11,433