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Note 12 - Accumulated Other Comprehensive Loss (Tables)
 12 Months Ended
Dec. 31, 2018
Notes Tables  
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]
   
Defined
    
 
 
 
  
 
 
 
   
Benefit
    
 
 
 
  
 
 
 
   
Pension
    
Interest
    
 
 
 
   
Plans
   
Rate Swaps
   
Total
 
Balance at December 31, 2016
   $
(2,875
 )   $
(35
 )   $
(2,910
 )
Other comprehensive income before reclassifications
    
237
      
278
      
515
  
Reclassifications from accumulated comprehensive loss to net loss
    
363
      
61
      
424
  
Net other comprehensive income
    
600
      
339
      
939
  
Reclassifications from accumulated comprehensive loss to accumulated deficit
    
(490
 )    
65
      
(425
 )
Balance at December 31, 2017
    
(2,765
 )    
369
      
(2,396
 )
Other comprehensive (loss) income before reclassifications
    
(399
 )    
275
      
(124
 )
Reclassifications from accumulated comprehensive loss to net income
    
161
      
(316
 )    
(155
 )
Net other comprehensive loss
    
(238
 )    
(41
 )    
(279
 )
Reclassifications from accumulated comprehensive loss to accumulated deficit
    
-
      
-
      
-
  
Balance at December 31, 2018
   $
(3,003
 )   $
328
     $
(2,675
 )
Reclassification out of Accumulated Other Comprehensive Income [Table Text Block]
   
2018
    
2017
  
Amortization of defined benefit plan pension items:
(1)
                
Amortization of loss
(2)
   $
225
     $
615
  
Income tax effect
    
(64
 )    
(252
 )
After tax
    
161
      
363
  
                 
Amortization of (gain) loss on interest rate swap:
(3)
                
Reclassification to interest expense
    
(444
 )    
104
  
Income tax effect
    
128
      
(43
 )
After tax
    
(316
 )    
61
  
Total reclassifications net of income tax
   $
(155
 )   $
424