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Note 9 - Stock-based Compensation - Stock-based Compensation (Details) - USD ($) $ in Thousands | 6 Months Ended | 9 Months Ended
--- | --- | ---
Oct. 01, 2022 | Oct. 02, 2021 | Oct. 01, 2022 | Oct. 02, 2021
Total stock-based compensation | $ 13,958 | $ 10,250 | $ 41,207 | $ 32,624
Cost of Sales [Member] |  |  |  |
Total stock-based compensation | 880 | 653 | 2,705 | 2,144
Research and Development Expense [Member] |  |  |  |
Total stock-based compensation | 4,925 | 3,463 | 14,461 | 10,199
Selling, General and Administrative Expenses [Member] |  |  |  |
Total stock-based compensation | $ 8,153 | $ 6,134 | $ 24,041 | $ 20,281

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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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