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Note 9 - Segment Information - Geographic Data (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2019 | Mar. 31, 2018
Net revenues | $ 57,160 | $ 54,579
BRAZIL |  |
Net revenues | $ 15,532 | $ 13,410
BRAZIL | Geographic Concentration Risk [Member] | Revenue Benchmark [Member] |  |
Percent of consolidated net revenue | 27.20% | 24.60%
SOUTH AFRICA |  |
Net revenues | $ 6,534 | $ 7,444
SOUTH AFRICA | Geographic Concentration Risk [Member] | Revenue Benchmark [Member] |  |
Percent of consolidated net revenue | 11.40% | 13.60%
MEXICO |  |
Net revenues | $ 5,287 | $ 5,360
MEXICO | Geographic Concentration Risk [Member] | Revenue Benchmark [Member] |  |
Percent of consolidated net revenue | 9.20% | 9.80%
CHINA |  |
Net revenues | $ 3,279 | $ 2,442
CHINA | Geographic Concentration Risk [Member] | Revenue Benchmark [Member] |  |
Percent of consolidated net revenue | 5.70% | 4.50%
INDIA |  |
Net revenues | $ 2,730 | $ 2,247
INDIA | Geographic Concentration Risk [Member] | Revenue Benchmark [Member] |  |
Percent of consolidated net revenue | 4.80% | 4.10%
JAPAN |  |
Net revenues | $ 2,206 | $ 2,424
JAPAN | Geographic Concentration Risk [Member] | Revenue Benchmark [Member] |  |
Percent of consolidated net revenue | 3.90% | 4.40%
CANADA |  |
Net revenues | $ 2,104 | $ 1,934
CANADA | Geographic Concentration Risk [Member] | Revenue Benchmark [Member] |  |
Percent of consolidated net revenue | 3.70% | 3.50%
AUSTRALIA |  |
Net revenues | $ 764 | $ 886
AUSTRALIA | Geographic Concentration Risk [Member] | Revenue Benchmark [Member] |  |
Percent of consolidated net revenue | 1.30% | 1.60%
TURKEY |  |
Net revenues | $ 67 | $ 63
TURKEY | Geographic Concentration Risk [Member] | Revenue Benchmark [Member] |  |
Percent of consolidated net revenue | 0.10% | 0.10%
International [Member] |  |
Net revenues | $ 38,503 | $ 36,210
International [Member] | Geographic Concentration Risk [Member] | Revenue Benchmark [Member] |  |
Percent of consolidated net revenue | 67.30% | 66.20%

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