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Note 9 - Stock-based Compensation - Stock-based Compensation (Details) - USD ($) $ in Thousands | 3 Months Ended
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Apr. 02, 2022 | Apr. 03, 2021
Total stock-based compensation | $ 14,125 | $ 10,454
Cost of Sales [Member] |  |
Total stock-based compensation | 935 | 666
Research and Development Expense [Member] |  |
Total stock-based compensation | 4,845 | 2,767
Selling, General and Administrative Expenses [Member] |  |
Total stock-based compensation | $ 8,345 | $ 7,021

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- Definition Amount of expense for award under share-based payment arrangement. Excludes amount capitalized. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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