Other Expense (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Component of Operating Other Cost and Expense [Line Items]
Restructuring charges			$ 2,126
Costs associated with legal arbitration and patent dispute	527	544	736	1,555
Other expense	2,093	1,775	3,906	3,763
Distributor [Member]
Component of Operating Other Cost and Expense [Line Items]
Costs associated with purchase	0	0	0	704
Administrative consolidation costs [Member]
Component of Operating Other Cost and Expense [Line Items]
Restructuring charges	$ 1,566	$ 1,231	$ 3,170	$ 1,504