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Note 19 - Stockholders' Equity (Tables)
 12 Months Ended
Dec. 31, 2016
Notes Tables  
Schedule of Stockholders Equity [Table Text Block]
 
 
December 31,
 
 
 
2016
 
 
2015
 
Foreign currency translation adjustments
   $
(11,334
 )   $
(9,554
 )
Employee benefit related adjustments – U.S, net of tax.
    
(15,445
 )    
(16,177
 )
Employee benefit related adjustments – Mexico, net of tax
    
181
      
(29
 )
Accumulated other comprehensive loss
   $
(26,598
 )   $
(25,760
 )
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]
 
 
 
 
 
 
 
 
 
 
Accumulated
 
 
 
Foreign
 
 
Defined
 
 
Other
 
 
 
Currency
 
 
Benefit
 
 
Comprehensive
 
 
 
Translation
 
 
Plans
 
 
Loss
 
Balance at January 1, 2015
   $
(7,265
 )   $
(17,770
 )   $
(25,035
 )
Currency translation adjustments
    
(2,289
 )    
0
      
(2,289
 )
Net actuarial gain for the year
    
0
      
667
      
667
  
Amortization for the year
    
0
      
897
      
897
  
Balance at December 31, 2015
    
(9,554
 )    
(16,206
 )    
(25,760
 )
Currency translation adjustments
    
(1,780
 )    
0
      
(1,780
 )
Net actuarial gain for the year
    
0
      
164
      
164
  
Amortization for the year
    
0
      
778
      
778
  
Balance at December 31, 2016
   $
(11,334
 )   $
(15,264
 )   $
(26,598
 )