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Note 16 - Employee Benefit Plans (Tables)
9 Months Ended
Sep. 29, 2019
Notes Tables  
Schedule of Net Benefit Costs [Table Text Block]
   
Three Months Ended
   
Nine
Months Ended
 
   
September 29
,
   
September 30
,
   
September 29
,
   
September 30
,
 
   
201
9
   
201
8
   
201
9
   
201
8
 
   
(Unaudited)
   
(Unaudited)
 
                                 
Service cost
  $
1
    $
1
    $
3
    $
3
 
Interest cost on projected benefit obligation
   
352
     
329
     
1,056
     
987
 
Net amortizations, deferrals and other costs
   
167
     
158
     
500
     
474
 
Expected return on plan assets
   
(271
)
   
(326
)
   
(813
)
   
(978
)
Net periodic benefit cost
  $
249
    $
162
    $
746
    $
486
 
Net Periodic Benefit Cost Recognized in Income Statement [Table Text Block]
   
Three Months Ended
   
Nine
Months Ended
 
   
September 29
,
   
September 30
,
   
September 29
,
   
September 30
,
 
   
201
9
   
201
8
   
201
9
   
201
8
 
   
(Unaudited)
   
(Unaudited)
 
Service cost:
                               
Selling, general and administrative expenses
  $
1
    $
1
    $
3
    $
3
 
Other net periodic benefit costs:
                               
Other expense (income), net
   
248
     
161
     
743
     
483
 
Total
  $
249
    $
162
    $
746
    $
486