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Note 9 - Intangible Assets (Tables) | 12 Months Ended
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Jan. 02, 2021
Notes Tables |
Schedule of Finite-Lived Intangible Assets [Table Text Block] |
|  | January 2, 2021 |
(In thousands) |  | Weighted Average Amortization Period (in years) |  |  | Gross |  |  | Accumulated Amortization |  |  | Intangible assets, net |
Developed technology |  | 5.0 |  |  | $ | 110,987 |  |  | $ | (109,162 | ) |  | $ | 1,825 |
Customer relationships |  | 5.8 |  |  |  | 22,934 |  |  |  | (22,281 | ) |  |  | 653 |
Licensed technology |  | 6.6 |  |  |  | 4,376 |  |  |  | (533 | ) |  |  | 3,843 |
Total identified intangible assets |  |  |  |  | $ | 138,297 |  |  | $ | (131,976 | ) |  | $ | 6,321 |
|  | December 28, 2019 |
(In thousands) |  | Weighted Average Amortization Period (in years) |  |  | Gross |  |  | Accumulated Amortization |  |  | Intangible assets, net |
Developed technology |  | 5.0 |  |  | $ | 110,987 |  |  | $ | (105,594 | ) |  | $ | 5,393 |
Customer relationships |  | 5.8 |  |  |  | 22,934 |  |  |  | (21,400 | ) |  |  | 1,534 |
Licensed technology |  | 5.0 |  |  |  | 459 |  |  |  | (409 | ) |  |  | 50 |
Total identified intangible assets |  |  |  |  | $ | 134,380 |  |  | $ | (127,403 | ) |  | $ | 6,977 |
Finite-lived Intangible Assets Amortization Expense [Table Text Block] |
|  | Year Ended |
|  | January 2, |  |  | December 28, |  |  | December 29, |
(In thousands) |  | 2021 |  |  | 2019 |  |  | 2018 |
Research and development |  | $ | 124 |  |  | $ | 55 |  |  | $ | 277 |
Amortization of acquired intangible assets |  |  | 4,449 |  |  |  | 13,558 |  |  |  | 17,690 |
|  | $ | 4,573 |  |  | $ | 13,613 |  |  | $ | 17,967 |
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] |
Fiscal year |  | (in thousands) |
2021 |  | $ | 2,877 |
2022 |  |  | 876 |
2023 |  |  | 600 |
2024 |  |  | 501 |
2025 |  |  | 501 |
Thereafter |  |  | 966 |
Total |  | $ | 6,321 |

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