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Note 8 - Accumulated Other Comprehensive Loss (Tables)
 6 Months Ended
Jun. 30, 2017
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, 2016
   $
(1,493
 )   $
10
     $
(1,483
 )
                         
Other comprehensive income (loss) before reclassifications
    
76
      
(15
 )    
61
  
Amounts reclassified from Accumulated other comprehensive loss
    
128
      
1
      
129
  
Net current period adjustments to Other comprehensive income
    
204
      
(14
 )    
190
  
                         
Balance, June 30, 2017
   $
(1,289
 )   $
(4
 )   $
(1,293
 )
   
Pension
Liability
Adjustment
    
Unrealized Gain
(Loss) on Cash
Flow Hedges
    
Total
  
Balance, December 31, 2015
   $
(1,624
 )   $
86
     $
(1,538
 )
                         
Other comprehensive income (loss) before reclassifications
    
63
      
(86
 )    
(23
 )
Amounts reclassified from Accumulated other comprehensive loss
    
136
      
(30
 )    
106
  
Net current period adjustments to Other comprehensive income
    
199
      
(116
 )    
83
  
                         
Balance, June 30, 2016
   $
(1,425
 )   $
(30
 )   $
(1,455
 )
Reclassification out of Accumulated Other Comprehensive Income [Table Text Block]
   
Six Months Ended June 30,
    
   
2017
    
2016
    
Details about Accumulated Other
Comprehensive Loss Components
  
Amount reclassified from Accumulated
Other Comprehensive Loss
  
Affected line item in the
Condensed Consolidated
Statements of Operations
                   
Pension liability adjustment:
                  
Net periodic pension cost
   $
(162
 )   $
(142
 )
Cost of sales
Associated income tax benefit
   
34
      
6
  
Income tax benefit
     
(128
 )    
(136
 )
Net of tax
                   
Unrealized gain (loss) on cash flow hedges:
                  
Gain (loss) on cash flow hedges
    
(2
 )    
48
  
Net sales
Hedge ineffectiveness
    
-
      
(1
 )
Net sales
Associated income tax (expense) benefit
   
1
      
(17
 )
Income tax benefit
     
(1
 )    
30
  
Net of tax
                   
Total reclassifications for the period
  $
(129
 )   $
(106
 )