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Note 5 - Property, Equipment and Improvements (Tables)
9 Months Ended
Oct. 01, 2017
Notes Tables  
Property, Plant and Equipment [Table Text Block]
   
October 1
,
   
December 31,
 
   
201
7
   
201
6
 
Land
  $
123
    $
123
 
Buildings and
Leasehold Improvements
   
7,801
     
7,757
 
Machinery and
Equipment
   
50,788
     
49,722
 
Furniture and
Fixtures
   
1,989
     
1,947
 
Computer
Hardware and Software
   
5,303
     
5,223
 
Construction
In Process
   
384
     
421
 
     
66,388
     
65,193
 
Less:
Accumulated Depreciation
   
(58,776
)    
(57,194
)
P
roperty, Equipment and Improvements, Net
  $
7,612
    $
7,999
 
   
Three-Month Periods E
nded
   
Nine-Month Periods E
nded
 
   
October
1
,
   
September
25
,
   
October
1
,
   
September
25
,
 
   
201
7
   
2016
   
201
7
   
2016
 
Depreciation
Expense
  $
497
    $
533
    $
1,507
    $
1,698