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Note 11 - Accumulated Other Comprehensive Loss (Tables)
 6 Months Ended
Jun. 30, 2018
Notes Tables  
Schedule of Changes in Accumulated Other Comprehensive Income Loss [Table Text Block]
   
Pension
Liability
Adjustment
    
Unrealized Gain
(Loss) on Cash
Flow Hedges
    
Total
  
Balance, December 31, 2017
   $
(1,436
 )   $
(9
 )   $
(1,445
 )
                         
Other comprehensive income before reclassifications
    
61
      
33
      
94
  
Amounts reclassified from Accumulated other comprehensive loss
    
-
      
2
      
2
  
Net current period adjustments to Other comprehensive income
    
61
      
35
      
96
  
                         
Balance, June 30, 2018
   $
(1,375
 )   $
26
     $
(1,349
 )
Reclassification out of Accumulated Other Comprehensive Income [Table Text Block]
 
  
Amount reclassified from Accumulated Other Comprehensive Loss
  
Affected line item
in the Condensed
Consolidated
Details about Accumulated Other
  
Three Months Ended June 30,
    
Six Months Ended June 30,
  
Statements of
Comprehensive Loss Components
  
2018
    
2017
    
2018
    
2017
  
Operations
                                   
Pension liability adjustment:
                                  
Net periodic pension cost:
                                  
Service cost
   $
-
     $
(2
 )   $
-
     $
(5
 )
Cost of sales
Non-service cost
    
-
      
(79
 )    
-
      
(157
 )
Other income
Associated income tax benefit
    
-
      
30
      
-
      
34
  
Income tax benefit
     
-
      
(51
 )    
-
      
(128
 )
Net of tax
                                   
Unrealized gain (loss) on cash flow hedges:
      
 
      
 
      
 
  
 
Gain (loss) on cash flow hedges
    
-
      
6
      
(3
 )    
(2
 )
Net sales
Associated income tax (expense) benefit
    
-
      
(2
 )    
1
      
1
  
Income tax benefit
     
-
      
4
      
(2
 )    
(1
 )
Net of tax
Total reclassifications for the period
   $
-
     $
(47
 )   $
(2
 )   $
(129
 )