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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 | 9 Months Ended
--- | --- | ---
Sep. 30, 2023 | Sep. 24, 2022 | Sep. 30, 2023 | Sep. 24, 2022
Share-based compensation of continuing operations | $ 4,334 | $ 3,740 | $ 12,680 | $ 11,095
Income tax benefit | (45) | (770) | (2,883) | (3,232)
Total share-based compensation, net | 4,289 | 2,970 | 9,797 | 7,863
Cost of Sales [Member] |  |  |  |
Share-based compensation of continuing operations | 223 | 161 | 619 | 478
Research and Development Expense [Member] |  |  |  |
Share-based compensation of continuing operations | 849 | 755 | 2,534 | 2,333
Selling, General and Administrative Expenses [Member] |  |  |  |
Share-based compensation of continuing operations | $ 3,262 | $ 2,824 | $ 9,527 | $ 8,284

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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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