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Note 7 - Employee Benefit Plans (Tables)
6 Months Ended
Jul. 01, 2018
Notes Tables  
Schedule of Net Benefit Costs [Table Text Block]
   
Three Months Ended
   
Six Months Ended
 
Defined Benefit Retirement Plan (Europe)
 
July
1
, 201
8
   
July
2
, 201
7
   
July
1
, 201
8
   
July
2
, 201
7
 
   
(In thousands)
   
(In thousands)
 
Service cost
  $
182
    $
397
    $
369
    $
780
 
Interest cost
   
1,318
     
1,378
     
2,671
     
2,712
 
Expected return on assets
   
(1,562
)    
(1,628
)    
(3,164
)    
(3,216
)
Amortization of prior service costs
   
8
     
(9
)    
15
     
(16
)
Recognized net actuarial (gains) / losses
   
281
     
320
     
569
     
629
 
Net periodic benefit cost
  $
227
    $
458
    $
460
    $
889
 
   
Three Months Ended
   
Six Months Ended
 
Salary Continuation Plan (SCP)
 
July
1
, 201
8
   
July
2
, 201
7
   
July
1
, 201
8
   
July
2
, 201
7
 
   
(In thousands)
   
(In thousands)
 
Service cost
  $
0
    $
0
    $
0
    $
0
 
Interest cost
   
271
     
314
     
541
     
628
 
Amortization of prior service cost
   
0
     
0
     
0
     
0
 
Amortization of (gain) / loss
   
116
     
91
     
232
     
182
 
Net periodic benefit cost
  $
387
    $
405
    $
773
    $
810