Restructuring and Other Charges (Details 2) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Restructuring reserves
Restructuring Reserves, Beginning Balance	$ 5,246	$ 4,047
Additions	9,544	3,783
Cash Payments	8,230	2,293
Non-Cash Reductions	1,882	246
Foreign Translation Adjustment	197	(45)
Restructuring Reserves, Ending Balance	4,875	5,246
Employee severance and benefits [Member]
Restructuring reserves
Restructuring Reserves, Beginning Balance	2,607	234
Additions	8,460	3,290
Cash Payments	6,711	736
Non-Cash Reductions	1,307	105
Foreign Translation Adjustment	98	(76)
Restructuring Reserves, Ending Balance	3,147	2,607
Contract termination costs [Member]
Restructuring reserves
Restructuring Reserves, Beginning Balance	2,639	3,813
Additions	1,084	493
Cash Payments	1,519	1,557
Non-Cash Reductions	575	141
Foreign Translation Adjustment	99	31
Restructuring Reserves, Ending Balance	$ 1,728	$ 2,639