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Note 3 - Revenue Recognition (Tables) | 6 Months Ended
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Jun. 30, 2019
Notes Tables |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table Text Block] |
|  | Remainder of 2019 |  |  | 2020 |  |  | 2021 |
License and related revenues |  | $ | 6,920 |  |  | $ | 5,167 |  |  | $ | 1,500 |
Disaggregation of Revenue [Table Text Block] |
|  | Six months ended June 3 0 , 201 9 (unaudited) |  |  | Three months ended June 3 0 , 2019 (unaudited) |
|  | Licensing and related revenues |  |  | Royalties |  |  | Total |  |  | Licensing and related revenues |  |  | Royalties |  |  | Total |
Primary geographical markets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
United States |  | $ | 3,359 |  |  | $ | 543 |  |  | $ | 3,902 |  |  | $ | 1,866 |  |  | $ | 257 |  |  | $ | 2,123 |
Europe and Middle East |  |  | 1,607 |  |  |  | 4,727 |  |  |  | 6,334 |  |  |  | 225 |  |  |  | 2,767 |  |  |  | 2,992 |
Asia Pacific |  |  | 16,849 |  |  |  | 8,284 |  |  |  | 25,133 |  |  |  | 8,713 |  |  |  | 4,572 |  |  |  | 13,285 |
Total |  | $ | 21,815 |  |  | $ | 13,554 |  |  | $ | 35,369 |  |  | $ | 10,804 |  |  | $ | 7,596 |  |  | $ | 18,400 |
Major product/service lines |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Connectivity products (baseband for handset and other devices, Bluetooth, Wi-Fi, NB-IoT and SATA/SAS) |  | $ | 14,716 |  |  | $ | 12,676 |  |  | $ | 27,392 |  |  | $ | 8,085 |  |  | $ | 7,055 |  |  | $ | 15,140 |
Smart sensing products (AI, audio/sound and imaging and vision) |  |  | 7,099 |  |  |  | 878 |  |  |  | 7,977 |  |  |  | 2,719 |  |  |  | 541 |  |  |  | 3,260 |
Total |  | $ | 21,815 |  |  | $ | 13,554 |  |  | $ | 35,369 |  |  | $ | 10,804 |  |  | $ | 7,596 |  |  | $ | 18,400 |
Timing of revenue recognition |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Products transferred at a point in time |  | $ | 15,307 |  |  | $ | 13,554 |  |  | $ | 28,861 |  |  | $ | 7,396 |  |  | $ | 7,596 |  |  | $ | 14,992 |
Products and services transferred over time |  |  | 6,508 |  |  |  | — |  |  |  | 6,508 |  |  |  | 3,408 |  |  |  | — |  |  |  | 3,408 |
Total |  | $ | 21,815 |  |  | $ | 13,554 |  |  | $ | 35,369 |  |  | $ | 10,804 |  |  | $ | 7,596 |  |  | $ | 18,400 |
|  | Six months ended June 3 0 , 201 8 (unaudited) |  |  | Three months ended June 3 0 , 2018 (unaudited) |
|  | Licensing and related revenues |  |  | Royalties |  |  | Total |  |  | Licensing and related revenues |  |  | Royalties |  |  | Total |
Primary geographical markets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
United States |  | $ | 3,184 |  |  | $ | 644 |  |  | $ | 3,828 |  |  | $ | 1,824 |  |  | $ | 297 |  |  | $ | 2,121 |
Europe and Middle East |  |  | 2,752 |  |  |  | 2,414 |  |  |  | 5,166 |  |  |  | 1,414 |  |  |  | 1,299 |  |  |  | 2,713 |
Asia Pacific |  |  | 14,185 |  |  |  | 11,884 |  |  |  | 26,069 |  |  |  | 6,800 |  |  |  | 5,860 |  |  |  | 12,660 |
Total |  | $ | 20,121 |  |  | $ | 14,942 |  |  | $ | 35,063 |  |  | $ | 10,038 |  |  | $ | 7,456 |  |  | $ | 17,494 |
Major product/service lines |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Connectivity products (baseband for handset and other devices, Bluetooth, Wi-Fi, NB-IoT and SATA/SAS) |  | $ | 13,559 |  |  | $ | 13,876 |  |  | $ | 27,435 |  |  | $ | 7,201 |  |  | $ | 6,915 |  |  | $ | 14,116 |
Smart sensing products (AI, audio/sound and imaging and vision) |  |  | 6,562 |  |  |  | 1,066 |  |  |  | 7,628 |  |  |  | 2,837 |  |  |  | 541 |  |  |  | 3,378 |
Total |  | $ | 20,121 |  |  | $ | 14,942 |  |  | $ | 35,063 |  |  | $ | 10,038 |  |  | $ | 7,456 |  |  | $ | 17,494 |
Timing of revenue recognition |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Products transferred at a point in time |  | $ | 15,285 |  |  | $ | 14,942 |  |  | $ | 30,227 |  |  | $ | 7,761 |  |  | $ | 7,456 |  |  | $ | 15,217 |
Products and services transferred over time |  |  | 4,836 |  |  |  | — |  |  |  | 4,836 |  |  |  | 2,277 |  |  |  | — |  |  |  | 2,277 |
Total |  | $ | 20,121 |  |  | $ | 14,942 |  |  | $ | 35,063 |  |  | $ | 10,038 |  |  | $ | 7,456 |  |  | $ | 17,494 |
Contract with Customer, Asset and Liability [Table Text Block] |
|  | June 3 0 , 201 9 (unaudited) |  |  | December 3 1 , 2018 |
Trade receivables |  | $ | 10,461 |  |  | $ | 9,971 |
Unbilled receivables (associated with licensing and related revenue) |  |  | 4,989 |  |  |  | 6,745 |
Unbilled receivables (associated with royalties) |  |  | 6,569 |  |  |  | 9,440 |
Deferred revenues (short-term contract liabilities) |  |  | 2,395 |  |  |  | 3,593 |

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