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Restructuring and Impairment Charges (Summary of Severance Accrual Activity) (Details) (USD $)
In Thousands, unless otherwise specified
9 Months Ended
Sep. 30, 2013
Restructuring Reserve [Roll Forward]  
Beginning Balance $ 5,109
Provisions 4,124
Payments (7,821)
Ending Balance 1,412
Streamlining and restructuring related activities [Member]
 
Restructuring Reserve [Roll Forward]  
Beginning Balance 1,142
Provisions 4,124
Payments (3,854)
Ending Balance 1,412
Curamik finishing operations relocated to Hungary [Member]
 
Restructuring Reserve [Roll Forward]  
Beginning Balance 3,967
Provisions 0
Payments (3,967)
Ending Balance $ 0