Restructuring, Impairment and Other Charges - Restructuring Charges By Statement of Income Account (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Schedule of restructuring and related costs
Restructuring Charges	$ 717	$ 4,485	$ 2,440	$ 16,286
Cost Of Sales Services [Member]
Schedule of restructuring and related costs
Restructuring Charges	(196)	2,555	(865)	8,629
Cost Of Sales Products [Member]
Schedule of restructuring and related costs
Restructuring Charges	100	251	105	374
Selling and Administrative Expense [Member]
Schedule of restructuring and related costs
Restructuring Charges	813	1,667	3,200	7,271
Research, development and engineering [Member]
Schedule of restructuring and related costs
Restructuring Charges	$ 0	$ 12	$ 0	$ 12