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Restructuring (Details) (Electronics [Member], USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Accrued balance, Begining balance $ 1,920 $ 1,117 $ 1,550
charge to expense 256 951 304
Foreign currency translation effect 172 (148) 64
Cash payments (1,583) 0 (801)
Accrued balance, Ending balance 765 1,920 1,117
Employee Severance [Member]
      
Accrued balance, Begining balance 0 0 127
charge to expense 0 0 183
Foreign currency translation effect 0 0 0
Cash payments 0 0 (310)
Accrued balance, Ending balance 0 0 0
Contract Termination [Member]
      
Accrued balance, Begining balance 1,920 1,117 1,423
charge to expense 256 951 121
Foreign currency translation effect 172 (148) 64
Cash payments (1,583) 0 (491)
Accrued balance, Ending balance $ 765 $ 1,920 $ 1,117