Restructuring (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Restructuring Cost [Line Items]
Restructuring charges			$ 1,016
Completion period			18 months
Cost of Sales [Member]
Restructuring Cost [Line Items]
Restructuring charges	1,358	1,606	2,306	3,228
Cost of Sales [Member] | Facility Consolidation Costs [Member]
Restructuring Cost [Line Items]
Restructuring charges	1,400	1,600	2,300	3,200
Other Expense [Member] | Administrative consolidation costs [Member]
Restructuring Cost [Line Items]
Restructuring charges	$ 494	$ 1,566	$ 1,207	$ 3,170