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Note 8 - Intangible Assets (Tables) | 9 Months Ended
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Oct. 02, 2021
Notes Tables |
Finite-lived Intangible Assets Amortization Expense [Table Text Block] |
|  | Three Months Ended |  |  | Nine Months Ended |
|  | October 2, |  |  | September 26, |  |  | October 2, |  |  | September 26, |
(In thousands) |  | 2021 |  |  | 2020 |  |  | 2021 |  |  | 2020 |
Research and development |  | $ | 223 |  |  | $ | 17 |  |  | $ | 644 |  |  | $ | 45 |
Amortization of acquired intangible assets |  |  | 603 |  |  |  | 603 |  |  |  | 1,809 |  |  |  | 3,846 |
|  | $ | 826 |  |  | $ | 620 |  |  | $ | 2,453 |  |  | $ | 3,891 |

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- Definition Tabular disclosure of amortization expense of assets, excluding financial assets, that lack physical substance, having a limited useful life. + References No definition available. + Details
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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration