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Note 17 - Accumulated Other Comprehensive Loss (Tables)
 12 Months Ended
Dec. 31, 2017
Notes Tables  
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]
   
December 31,
  
   
201
7
    
201
6
  
Pension liability adjustment, net of income tax
benefit of $866 and $886
   $
(1,436
 )   $
(1,493
 )
Unrealized gain (loss) on cash flow hedges, net of income tax expense (benefit) of $(1) and $
6
    
(9
 )    
10
  
Total
   $
(1,445
 )   $
(1,483
 )
Schedule of Changes in Accumulated Other Comprehensive Income Loss [Table Text Block]
   
Pension Liability Adjustmen
t
    
Unrealized Gain
(Loss) on Cash
Flow Hedge
s
    
Tota
l
  
                         
Balance, December 31, 201
5
   $
(1,624
 )   $
86
     $
(1,538
 )
                         
Other comprehensive loss before reclassification
s
    
(125
 )    
(48
 )    
(173
 )
Amounts reclassified from Accumulated other comprehensive los
s
    
256
      
(28
 )    
228
  
Net current period adjustments to Other comprehensive incom
e
    
131
      
(76
 )    
55
  
                         
Balance, December 31, 201
6
    
(1,493
 )    
10
      
(1,483
 )
                         
Other comprehensive income (loss) before reclassification
s
    
54
      
(16
 )    
38
  
Amounts reclassified from Accumulated other comprehensive los
s
    
3
      
(3
 )    
-
  
Net current period adjustments to Other comprehensive incom
e
    
57
      
(19
 )    
38
  
                         
Balance, December 31, 201
7
   $
(1,436
 )   $
(9
 )   $
(1,445
 )
Reclassification out of Accumulated Other Comprehensive Income [Table Text Block]
   
Year Ended December 31,
    
   
201
7
    
201
6
    
201
5
    
Details about Accumulated Other
Comprehensive Loss Component
s
  
Amount reclassified from Accumulated Other
Comprehensive Los
s
  
Affected line item in the
Consolidated Statements
of Operation
s
                           
Pension liability adjustment
:
                          
Net periodic pension cos
t
   $
(3
 )   $
(392
 )   $
(352
 )
Cost of sales
Associated income tax benefi
t
    
-
      
136
      
131
  
Income tax benefit
     
(3
 )    
(256
 )    
(221
 )
Net of tax
Unrealized gain on cash flow hedges
:
                          
Gain on cash flow hedge
s
    
5
      
45
      
147
  
Net sales
Hedge ineffectiveness
    
-
      
-
      
2
  
Net sales
Associated income tax expense
    
(2
 )    
(17
 )    
(56
 )
Income tax benefit
     
3
      
28
      
93
  
Net of tax
Total reclassifications for the period
   $
-
     $
(228
 )   $
(128
 )