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Note 3 - Revenue Recognition (Tables) | 3 Months Ended
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Mar. 31, 2019
Notes Tables |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table Text Block] |
|  | Remainder of 201 9 |  |  | 20 20 |  |  | 20 21 |
License and related revenues |  | $ | 8,494 |  |  | $ | 4,192 |  |  | $ | 1,500 |
Disaggregation of Revenue [Table Text Block] |
|  | Three months ended March 3 1 , 201 9 (unaudited) |  |  | Three months ended March 3 1 , 2018 (unaudited) |
|  | Licensing and related revenues |  |  | Royalties |  |  | Total |  |  | Licensing and related revenues |  |  | Royalties |  |  | Total |
Primary geographical markets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
United States |  | $ | 1,493 |  |  | $ | 286 |  |  | $ | 1,779 |  |  | $ | 1,360 |  |  | $ | 347 |  |  | $ | 1,707 |
Europe and Middle East |  |  | 1,382 |  |  |  | 1,960 |  |  |  | 3,342 |  |  |  | 1,338 |  |  |  | 1,115 |  |  |  | 2,453 |
Asia Pacific |  |  | 8,136 |  |  |  | 3,712 |  |  |  | 11,848 |  |  |  | 7,385 |  |  |  | 6,024 |  |  |  | 13,409 |
Total |  | $ | 11,011 |  |  | $ | 5,958 |  |  | $ | 16,969 |  |  | $ | 10,083 |  |  | $ | 7,486 |  |  | $ | 17,569 |
Major product/service lines |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Connectivity products (baseband for handset and other devices, Bluetooth, Wi-Fi, NB-IoT and SATA/SAS) |  | $ | 6,631 |  |  | $ | 5,620 |  |  | $ | 12,251 |  |  | $ | 6,358 |  |  | $ | 6,961 |  |  | $ | 13,319 |
Smart sensing products (AI, audio/sound and imaging and vision) |  |  | 4,380 |  |  |  | 338 |  |  |  | 4,718 |  |  |  | 3,725 |  |  |  | 525 |  |  |  | 4,250 |
Total |  | $ | 11,011 |  |  | $ | 5,958 |  |  | $ | 16,969 |  |  | $ | 10,083 |  |  | $ | 7,486 |  |  | $ | 17,569 |
Timing of revenue recognition |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Products transferred at a point in time |  | $ | 7,911 |  |  | $ | 5,958 |  |  | $ | 13,869 |  |  | $ | 7,524 |  |  | $ | 7,486 |  |  | $ | 15,010 |
Products and services transferred over time |  |  | 3,100 |  |  |  | — |  |  |  | 3,100 |  |  |  | 2,559 |  |  |  | — |  |  |  | 2,559 |
Total |  | $ | 11,011 |  |  | $ | 5,958 |  |  | $ | 16,969 |  |  | $ | 10,083 |  |  | $ | 7,486 |  |  | $ | 17,569 |
Contract with Customer, Asset and Liability [Table Text Block] |
|  | March 3 1 , 201 9 (unaudited) |  |  | December 3 1 , 2018 |
Trade receivables |  | $ | 11,179 |  |  | $ | 9,971 |
Unbilled receivables (associated with licensing and related revenue) |  |  | 2,965 |  |  |  | 6,745 |
Unbilled receivables (associated with royalties) |  |  | 5,207 |  |  |  | 9,440 |
Deferred revenues (short-term contract liabilities) |  |  | 2,811 |  |  |  | 3,593 |

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