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Note 9 - Property, Plant and Equipment (Tables)
6 Months Ended
Jul. 03, 2016
Notes Tables  
Property, Plant and Equipment [Table Text Block]
 
 
July 3,
2016
 
 
December 31,
2015
 
 
 
(Unaudited) 
 
 
 
 
 
Land and land improvements
  $ 219     $ 219  
Buildings and building improvements
    18,305       18,305  
Machinery, equipment, furniture and fixtures
    124,821       123,935  
Construction in progress
    677       759  
      144,022       143,218  
Accumulated depreciation
    (121,692 )     (121,040 )
    $ 22,330     $ 22,178