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Note 9 - Accumulated Other Comprehensive Loss (Tables)
 9 Months Ended
Sep. 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
    
111
      
(7
 )    
104
  
Amounts reclassified from Accumulated other comprehensive loss
    
195
      
(4
 )    
191
  
Net current period adjustments to Other comprehensive income
    
306
      
(11
 )    
295
  
                         
Balance, September 30, 2017
   $
(1,187
 )   $
(1
 )   $
(1,188
 )
   
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
    
127
      
(75
 )    
52
  
Amounts reclassified from Accumulated other comprehensive loss
    
172
      
(24
 )    
148
  
Net current period adjustments to Other comprehensive income
    
299
      
(99
 )    
200
  
                         
Balance, September 30, 2016
   $
(1,325
 )   $
(13
 )   $
(1,338
 )
Reclassification out of Accumulated Other Comprehensive Income [Table Text Block]
   
Nine Months Ended September 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
   $
(243
 )   $
(213
 )
Cost of sales
Associated income tax benefit
   
48
      
41
  
Income tax benefit
     
(195
 )    
(172
 )
Net of tax
                   
Unrealized gain (loss) on cash flow hedges:
                  
Gain on cash flow hedges
    
7
      
39
  
Net sales
Hedge ineffectiveness
    
-
      
(1
 )
Net sales
Associated income tax expense
   
(3
 )    
(14
 )
Income tax benefit
     
4
      
24
  
Net of tax
                   
Total reclassifications for the period
  $
(191
 )   $
(148
 )