Restructuring and Other Charges - Restructuring Charges By Statement of Operations Account (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Schedule of restructuring and related costs
Restructuring Charges	$ 26,182	$ 4,183	$ 25,203
Cost Of Sales Products [Member]
Schedule of restructuring and related costs
Restructuring Charges	3,905	1,163	5,348
Cost Of Sales Services [Member]
Schedule of restructuring and related costs
Restructuring Charges	10,678	540	7,488
Selling and Administrative Expense [Member]
Schedule of restructuring and related costs
Restructuring Charges	11,607	3,809	10,276
Research, development and engineering expense [Member]
Schedule of restructuring and related costs
Restructuring Charges	(8)	(143)	2,091
Gain on sale of real estate [Member]
Schedule of restructuring and related costs
Restructuring Charges	$ 0	$ (1,186)	$ 0