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Note 4 - Revenue Recognition (Tables) | 9 Months Ended
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Sep. 30, 2019
Notes Tables |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table Text Block] |
|  | Remainder of 2019 |  |  | 2020 |  |  | 2021 |
License and related revenues |  | $ | 5,262 |  |  | $ | 7,884 |  |  | $ | 1,780 |
Disaggregation of Revenue [Table Text Block] |
|  | Nine months ended September 30, 2019 (unaudited) |  |  | Three months ended September 30, 2019 (unaudited) |
|  | Licensing and related revenues |  |  | Royalties |  |  | Total |  |  | Licensing and related revenues |  |  | Royalties |  |  | Total |
Primary geographical markets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
United States |  | $ | 6,809 |  |  | $ | 904 |  |  | $ | 7,713 |  |  | $ | 3,450 |  |  | $ | 361 |  |  | $ | 3,811 |
Europe and Middle East |  |  | 2,848 |  |  |  | 10,397 |  |  |  | 13,245 |  |  |  | 1,241 |  |  |  | 5,670 |  |  |  | 6,911 |
Asia Pacific |  |  | 23,427 |  |  |  | 14,455 |  |  |  | 37,882 |  |  |  | 6,578 |  |  |  | 6,171 |  |  |  | 12,749 |
Total |  | $ | 33,084 |  |  | $ | 25,756 |  |  | $ | 58,840 |  |  | $ | 11,269 |  |  | $ | 12,202 |  |  | $ | 23,471 |
Major product/service lines |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Connectivity products (baseband for handset and other devices, Bluetooth, Wi-Fi, NB-IoT and SATA/SAS) |  | $ | 23,324 |  |  | $ | 23,100 |  |  | $ | 46,424 |  |  | $ | 8,608 |  |  | $ | 10,424 |  |  | $ | 19,032 |
Smart sensing products (AI, audio/sound and imaging and vision) |  |  | 9,760 |  |  |  | 2,656 |  |  |  | 12,416 |  |  |  | 2,661 |  |  |  | 1,778 |  |  |  | 4,439 |
Total |  | $ | 33,084 |  |  | $ | 25,756 |  |  | $ | 58,840 |  |  | $ | 11,269 |  |  | $ | 12,202 |  |  | $ | 23,471 |
Timing of revenue recognition |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Products transferred at a point in time |  | $ | 22,775 |  |  | $ | 25,756 |  |  | $ | 48,531 |  |  | $ | 7,468 |  |  | $ | 12,202 |  |  | $ | 19,670 |
Products and services transferred over time |  |  | 10,309 |  |  |  | — |  |  |  | 10,309 |  |  |  | 3,801 |  |  |  | — |  |  |  | 3,801 |
Total |  | $ | 33,084 |  |  | $ | 25,756 |  |  | $ | 58,840 |  |  | $ | 11,269 |  |  | $ | 12,202 |  |  | $ | 23,471 |
|  | N ine months ended September 30, 2018 (unaudited) |  |  | Three months ended September 30, 2018 (unaudited) |
|  | Licensing and related revenues |  |  | Royalties |  |  | Total |  |  | Licensing and related revenues |  |  | Royalties |  |  | Total |
Primary geographical markets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
United States |  | $ | 4,667 |  |  | $ | 1,420 |  |  | $ | 6,087 |  |  | $ | 1,483 |  |  | $ | 776 |  |  | $ | 2,259 |
Europe and Middle East |  |  | 3,286 |  |  |  | 8,019 |  |  |  | 11,305 |  |  |  | 534 |  |  |  | 5,605 |  |  |  | 6,139 |
Asia Pacific |  |  | 21,954 |  |  |  | 17,130 |  |  |  | 39,084 |  |  |  | 7,769 |  |  |  | 5,246 |  |  |  | 13,015 |
Total |  | $ | 29,907 |  |  | $ | 26,569 |  |  | $ | 56,476 |  |  | $ | 9,786 |  |  | $ | 11,627 |  |  | $ | 21,413 |
Major product/service lines |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Connectivity products (baseband for handset and other devices, Bluetooth, Wi-Fi, NB-IoT and SATA/SAS) |  | $ | 21,769 |  |  | $ | 25,065 |  |  | $ | 46,834 |  |  | $ | 8,210 |  |  | $ | 11,189 |  |  | $ | 19,399 |
Smart sensing products (AI, audio/sound and imaging and vision) |  |  | 8,138 |  |  |  | 1,504 |  |  |  | 9,642 |  |  |  | 1,576 |  |  |  | 438 |  |  |  | 2,014 |
Total |  | $ | 29,907 |  |  | $ | 26,569 |  |  | $ | 56,476 |  |  | $ | 9,786 |  |  | $ | 11,627 |  |  | $ | 21,413 |
Timing of revenue recognition |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Products transferred at a point in time |  | $ | 22,163 |  |  | $ | 26,569 |  |  | $ | 48,732 |  |  | $ | 6,878 |  |  | $ | 11,627 |  |  | $ | 18,505 |
Products and services transferred over time |  |  | 7,744 |  |  |  | — |  |  |  | 7,744 |  |  |  | 2,908 |  |  |  | — |  |  |  | 2,908 |
Total |  | $ | 29,907 |  |  | $ | 26,569 |  |  | $ | 56,476 |  |  | $ | 9,786 |  |  | $ | 11,627 |  |  | $ | 21,413 |
Contract with Customer, Asset and Liability [Table Text Block] |
|  | September 30, 2019 (unaudited) |  |  | December 31, 2018 |
Trade receivables |  | $ | 7,967 |  |  | $ | 9,971 |
Unbilled receivables (associated with licensing and related revenue) |  |  | 7,985 |  |  |  | 6,745 |
Unbilled receivables (associated with royalties) |  |  | 10,861 |  |  |  | 9,440 |
Deferred revenues (short-term contract liabilities) |  |  | 4,766 |  |  |  | 3,593 |

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