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Note 10 - Segment Data (Tables)
6 Months Ended
Jun. 30, 2013
Income Statement [Member]
 
Note 10 - Segment Data (Tables) [Line Items]  
Schedule of Segment Reporting Information, by Segment [Table Text Block]
 

Three Months Ended

 

Six Months Ended

 
 

June 30,

2013

 

July 1,

2012

 

June 30,

2013

 

July 1,

2012

 
 

(Unaudited)

 

(Unaudited)

 

Net revenue from unaffiliated customers:

                       

Industrial Group

$ 74,432   $ 82,850   $ 145,581   $ 165,372  

Electronics Group

  7,734     16,062     14,996     30,003  
  $ 82,166   $ 98,912   $ 160,577   $ 195,375  

Gross profit (loss):

                       

Industrial Group

$ 8,858   $ 8,906   $ 16,968   $ 18,828  

Electronics Group

  (522 )   4,317     (556 )   6,909  
  $ 8,336   $ 13,223   $ 16,412   $ 25,737  

Operating income (loss):

                       

Industrial Group

$ 5,976   $ 6,097   $ 11,361   $ 13,453  

Electronics Group

  (4,444 )   724     (14,595 )   460  

General, corporate and other

  (2,221 )   (2,353 )   (4,336 )   (4,942 )
  $ (689 ) $ 4,468   $ (7,570 ) $ 8,971  
Balance Sheet [Member]
 
Note 10 - Segment Data (Tables) [Line Items]  
Schedule of Segment Reporting Information, by Segment [Table Text Block]
   

June 30,

2013

   

December 31,

2012

 
    (Unaudited)  

Total assets:

               

Industrial Group

  $ 121,857     $ 114,268  

Electronics Group

    30,522       38,852  

General corporate and other

    13,344       7,848  
    $ 165,723     $ 160,968