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Note 1 - Summary of Significant Accounting Policies - Reported Share-based Compensation in Consolidated Financial Statements (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jul. 01, 2023 | Jun. 25, 2022 | Jul. 01, 2023 | Jun. 25, 2022
Share-based compensation of continuing operations | $ 4,432 | $ 3,933 | $ 8,346 | $ 7,355
Income tax benefit | (62) | (836) | (2,838) | (2,462)
Total share-based compensation, net | 4,370 | 3,097 | 5,508 | 4,893
Cost of Sales [Member] |  |  |  |
Share-based compensation of continuing operations | 216 | 172 | 396 | 317
Research and Development Expense [Member] |  |  |  |
Share-based compensation of continuing operations | 819 | 826 | 1,685 | 1,578
Selling, General and Administrative Expenses [Member] |  |  |  |
Share-based compensation of continuing operations | $ 3,397 | $ 2,935 | $ 6,265 | $ 5,460

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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 -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 14.F) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479830/718-10-S99-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
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