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Note 12 - Segment Information - Geographic Data (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017
Net revenues | $ 229,191 | $ 181,381
BRAZIL |  |
Net revenues | $ 54,060 | $ 42,853
BRAZIL | Geographic Concentration Risk [Member] | Sales Revenue, Net [Member] |  |
Percent of consolidated net revenue | 23.60% | 23.60%
SOUTH AFRICA |  |
Net revenues | $ 28,566 | $ 26,661
SOUTH AFRICA | Geographic Concentration Risk [Member] | Sales Revenue, Net [Member] |  |
Percent of consolidated net revenue | 12.50% | 14.70%
MEXICO |  |
Net revenues | $ 21,233 | $ 22,128
MEXICO | Geographic Concentration Risk [Member] | Sales Revenue, Net [Member] |  |
Percent of consolidated net revenue | 9.30% | 12.20%
CHINA |  |
Net revenues | $ 13,181 | $ 11,045
CHINA | Geographic Concentration Risk [Member] | Sales Revenue, Net [Member] |  |
Percent of consolidated net revenue | 5.80% | 6.10%
JAPAN |  |
Net revenues | $ 10,814 | $ 8,125
JAPAN | Geographic Concentration Risk [Member] | Sales Revenue, Net [Member] |  |
Percent of consolidated net revenue | 4.70% | 4.50%
INDIA |  |
Net revenues | $ 9,269 | $ 7,308
INDIA | Geographic Concentration Risk [Member] | Sales Revenue, Net [Member] |  |
Percent of consolidated net revenue | 4.00% | 4.00%
CANADA |  |
Net revenues | $ 8,392 | $ 6,913
CANADA | Geographic Concentration Risk [Member] | Sales Revenue, Net [Member] |  |
Percent of consolidated net revenue | 3.70% | 3.80%
AUSTRALIA |  |
Net revenues | $ 3,405 | $ 3,789
AUSTRALIA | Geographic Concentration Risk [Member] | Sales Revenue, Net [Member] |  |
Percent of consolidated net revenue | 1.50% | 2.10%
TURKEY |  |
Net revenues | $ 222 | $ 277
TURKEY | Geographic Concentration Risk [Member] | Sales Revenue, Net [Member] |  |
Percent of consolidated net revenue | 0.10% | 0.20%
International [Member] |  |
Net revenues | $ 149,142 | $ 129,108
International [Member] | Geographic Concentration Risk [Member] | Sales Revenue, Net [Member] |  |
Percent of consolidated net revenue | 65.20% | 71.20%

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