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Goodwill
 6 Months Ended
Jun. 30, 2011
Notes to Financial Statements [Abstract]  
Goodwill
8.  
Goodwill

   
Industrial Technology
 
Energy Systems & Controls
 
Medical & Scientific  Imaging
 
RF Technology
 
Total
 
   
 (in thousands)
 
Balances at December 31, 2010
 
$
420,002
 
$
380,595
 
$
637,991
 
$
1,289,192
 
$
2,727,780
 
Additions
   
-
   
-
   
135,379
   
-
   
135,379
 
Currency translation adjustments
   
10,765
   
3,687
   
2,950
   
3,983
   
21,385
 
Balances at June 30, 2011
 
$
430,767
 
$
384,282
 
$
776,320
 
$
1,293,175
 
$
2,884,544