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Note 9 - Plant Restructuring (Tables)
 3 Months Ended
Jun. 29, 2019
Notes Tables  
Restructuring and Related Costs [Table Text Block]
   
Restructuring Payable
  
   
Severance
    
Other Costs
    
Total
  
   
(In thousands)
  
                         
Balance March 31, 2019
   $
225
     $
1
     $
226
  
First quarter charge
    
586
      
4,220
      
4,806
  
Cash payments/write offs
    
(170
 )    
(4,220
 )    
(4,390
 )
Balance June 29, 2019
   $
641
     $
1
     $
642
  
   
Severance
    
Other Costs
    
Total
  
   
(In thousands)
  
                         
Balance March 31, 2018
   $
-
     $
-
     $
-
  
First quarter charge
    
110
      
(72
 )    
38
  
Cash payments/write offs
    
-
      
72
      
72
  
Balance June 30, 2018
   $
110
     $
-
     $
110