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Note 19 - Stockholders' Equity - Accumulated Other Comprehensive Loss (Details) - USD ($)
$ in Thousands
Dec. 31, 2016
Dec. 31, 2015
Foreign currency translation adjustments $ (11,334) $ (9,554)
Accumulated other comprehensive loss (26,598) (25,760)
UNITED STATES    
Employee benefit related adjustments, net of tax (15,445) (16,177)
MEXICO    
Employee benefit related adjustments, net of tax $ 181 $ (29)