Retirement Plans (Schedule of Changes In Benefit Obligation) (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]
Benefit obligation at beginning of period	$ 16,986	$ 14,955
Service cost	31	30	31
Interest cost	748	799	264
Actuarial losses	980	1,896
Benefits paid	(711)	(694)
Benefit obligation at end of period	18,034	16,986	14,955
Fair value of assets at beginning of period	12,088	11,433
Actual gain (loss) on plan assets	1,127	266
Employer contribution	758	1,083
Fair value of assets at end of period	13,262	12,088	11,433
Funded status at end of period	(4,772)	(4,898)
Amounts recognized in the consolidated balance sheet consist of: Other long-term liabilities	(4,772)	(4,898)
Amounts recognized in accumulated other comprehensive income consist of: Net loss	4,675	4,206
Amounts recognized in accumulated other comprehensive income consist of: Prior service cost	4	5
Pension and Other Postretirement Benefit Plans, Accumulated Other Comprehensive Income (Loss), before Tax, Total	$ 4,679	$ 4,211