Business Segments And Geographic Area Information (Summary of Capital Expenditures) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Segment Reporting Information [Line Items]
Total capital expenditures	$ 13,723	$ 9,376	$ 19,371
Segment [Member]
Segment Reporting Information [Line Items]
Total capital expenditures	13,390	8,419	18,942
Corporate [Member]
Segment Reporting Information [Line Items]
Total capital expenditures	$ 333	$ 957	$ 429