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Note 11 - Geographic Information and Major Customer and Product Data (Tables) | 12 Months Ended
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Dec. 31, 2018
Notes Tables |
Revenue from External Customers by Geographic Areas [Table Text Block] |
|  | Year ended December 31, |
|  | 2016 |  |  | 2017 |  |  | 2018 |
Revenues based on customer location: |  |  |  |  |  |  |  |  |  |  |  |
United States |  | $ | 9,134 |  |  | $ | 7,188 |  |  | $ | 8,354 |
Europe, Middle East (3) |  |  | 10,901 |  |  |  | 11,007 |  |  |  | 17,370 |
Asia Pacific (1) (2) |  |  | 52,618 |  |  |  | 69,312 |  |  |  | 52,153 |
|  | $ | 72,653 |  |  | $ | 87,507 |  |  | $ | 77,877 |
(1) China |  | $ | 30,030 |  |  | $ | 41,059 |  |  | $ | 33,672 |
(2) S. Korea |  | $ | 15,512 |  |  | $ | 17,842 |  |  | $ | 7,989 |
(3) Germany |  |  | *) |  |  |  | *) |  |  | $ | 13,873 |
Schedule of Disclosure on Geographic Areas, Long-Lived Assets in Individual Foreign Countries by Country [Table Text Block] |
|  | 2017 |  |  | 2018 |
Long-lived assets by geographic region: |  |  |  |  |  |  |  |
Israel |  |  | 6,196 |  |  |  | 6,599 |
France |  |  | 383 |  |  |  | 451 |
United States |  |  | 185 |  |  |  | 156 |
Other |  |  | 162 |  |  |  | 138 |
|  | $ | 6,926 |  |  | $ | 7,344 |
Schedules of Concentration of Risk, by Risk Factor [Table Text Block] |
|  | Year ended December 31, |
|  | 2016 |  |  | 2017 |  |  | 2018 |
Customer A |  |  | 27 | % |  |  | 23 | % |  |  | 15 | %
Customer B |  |  | 19 | % |  |  | 17 | % |  |  | *) |
Customer C |  |  | *) |  |  |  | *) |  |  |  | 19 | %
Revenue from External Customers by Products and Services [Table Text Block] |
|  | Year ended December 31, |
|  | 2016 |  |  | 2017 |  |  | 2018 |
DSP products (DSP cores and platforms) |  |  | 84 | % |  |  | 86 | % |  |  | 76 | %
Connectivity products (Bluetooth, Wi-Fi and SATA/SAS) |  |  | 16 | % |  |  | 14 | % |  |  | 24 | %

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