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Note 9 - Restructuring (Tables)
6 Months Ended
Jun. 30, 2012
Schedule of Restructuring and Related Costs [Table Text Block]
Littelfuse restructuring (in thousands)      
Balance at January 1, 2011
  $ 3,765  
Additions
    594  
Payments
    (2,941 )
Exchange rate impact
    23  
Balance at December 31, 2011
    1,441  
Additions
    59  
Payments
    (1 )
Exchange rate impact
    17  
Balance at March 31, 2012
    1,516  
Additions
     
Payments
    (193 )
Exchange rate impact
    (20 )
Balance at June 30, 2012
  $ 1,303