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Note 11 - Segment Data (Tables)
3 Months Ended
Mar. 30, 2014
Income Statement [Member]
 
Note 11 - Segment Data (Tables) [Line Items]  
Schedule of Segment Reporting Information, by Segment [Table Text Block]
   

Three Months Ended

 
   

March 30,

   

March 31,

 
   

2014

   

2013

 
   

(Unaudited)

 

Net revenue from unaffiliated customers:

               

Industrial Group

  $ 75,839     $ 71,149  

Electronics Group

    8,405       7,262  
    $ 84,244     $ 78,411  
                 

Gross profit (loss):

               

Industrial Group

  $ 11,154     $ 8,110  

Electronics Group

    (590 )     (34 )
    $ 10,564     $ 8,076  

Operating income (loss):

               

Industrial Group

  $ 8,113     $ 5,385  

Electronics Group

    (3,077 )     (10,151 )

General, corporate and other

    (2,615 )     (2,115 )
    $ 2,421     $ (6,881 )
Balance Sheet [Member]
 
Note 11 - Segment Data (Tables) [Line Items]  
Schedule of Segment Reporting Information, by Segment [Table Text Block]
   

March 30,

   

December 31,

 
   

2014

   

2013

 
   

(Unaudited)

 

Total assets:

               

Industrial Group

  $ 120,165     $ 100,593  

Electronics Group

    30,579       29,689  

General corporate and other

    14,069       16,001  
    $ 164,813     $ 146,283