Restructuring and Other Charges (Details) (USD $) In Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Schedule of restructuring and related costs
Restructuring Charges	$ 1,437	$ 483	$ 17,723	$ 2,793
Cost Of Sales Products [Member]
Schedule of restructuring and related costs
Restructuring Charges	630	305	1,004	787
Cost Of Sales Services [Member]
Schedule of restructuring and related costs
Restructuring Charges	(1,331)	35	7,298	(175)
Selling and Administrative Expense [Member]
Schedule of restructuring and related costs
Restructuring Charges	2,131	100	9,402	2,336
Research and Development Expense [Member]
Schedule of restructuring and related costs
Restructuring Charges	$ 7	$ 43	$ 19	$ (155)