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Note 19 - Stockholders' Equity (Tables) | 12 Months Ended
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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 | )

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