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Note 5 - Property, Equipment and Improvements (Tables)
3 Months Ended
Apr. 01, 2018
Notes Tables  
Property, Plant and Equipment [Table Text Block]
   
April
1
,
   
December 31,
 
   
2018
   
2017
 
Land
  $
123
    $
123
 
Buildings and Leasehold Improvements
   
7,900
     
7,858
 
Machinery and Equipment
   
51,116
     
50,852
 
Furniture and Fixtures
   
2,024
     
2,005
 
Computer Hardware and Software
   
5,414
     
5,338
 
Construction In Process
   
487
     
535
 
     
67,064
     
66,711
 
Less: Accumulated Depreciation
   
(59,705
)    
(59,141
)
Property, Equipment and Improvements, Net
  $
7,359
    $
7,570