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Note 6 - Exit and Disposal Activities (Tables)
3 Months Ended
Apr. 01, 2018
Notes Tables  
Restructuring and Related Costs [Table Text Block]
   
 
 
 
 
Costs Incurred
   
 
 
 
   
 
 
 
 
Three Months
   
Total
   
Remaining
 
   
Total
   
Ended
   
Recognized
   
Costs to be
 
   
Program
   
April 1, 2018
   
to date
   
Recognized
 
Severance and benefit related costs
  $
1,350
    $
(13
)   $
1,350
    $
0
 
Asset impairments
   
188
     
0
     
188
     
0
 
Equipment relocation costs
   
1,552
     
68
     
1,492
     
60
 
Other
   
1,006
     
454
     
484
     
522
 
    $
4,096
    $
509
    $
3,514
    $
582
 
Schedule of Restructuring Reserve by Type of Cost [Table Text Block]
   
Accrued
   
 
 
 
 
Cash
   
Accrued
 
   
Balance at
   
 
 
 
 
Payments
   
Balance at
 
   
Dec. 31,
   
2018
   
or Asset
   
April 1,
 
   
2017
   
Charge
   
Write-Offs
   
2018
 
Severance and benefit-related costs
  $
145
    $
(13
)   $
(71
)   $
61
 
Equipment relocation costs
   
0
     
68
     
(68
)    
0
 
Other
   
0
     
454
     
(454
)    
0
 
    $
145
    $
509
    $
(593
)   $
61
 
Disposal Groups, Including Discontinued Operations [Table Text Block]
   
April 1,
   
December 31,
 
   
2018
   
2017
 
   
(Unaudited)
   
 
 
 
                 
Machinery, equipment, furniture and fixtures
  $
26,353
    $
28,874
 
Accumulated depreciation
   
(23,492
)    
(25,976
)
Property, plant and equipment, net
  $
2,861
    $
2,898