Restructuring (Narrative) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011 years employees	Sep. 30, 2010	Dec. 31, 2010
Restructuring [Abstract]
Pre-tax restructuring expenses related to restructuring initiative	$ 2,931	$ 3,524	$ 2,931	$ 6,422
Number of employees			100
Restructuring accruals	$ 2,167		$ 2,167		$ 3,543