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Note 19 - Stockholders' Equity (Tables)
12 Months Ended
Dec. 31, 2015
Notes Tables  
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]
 
 
December 31,
 
 
 
2015
 
 
2014
 
Foreign currency translation adjustments
  $ (9,554 )   $ (7,265 )
Employee benefit related adjustments – U.S, net of tax.
    (16,177 )     (17,584 )
Employee benefit related adjustments – Mexico, net of tax
    (29 )     (186 )
                 
Accumulated other comprehensive loss
  $ (25,760 )   $ (25,035 )