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Stock-Based Compensation (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Oct. 01, 2022 | Oct. 02, 2021 | Oct. 01, 2022 | Oct. 02, 2021
Stock-based compensation costs |  |  |  |
Stock based compensation costs | $ 15,950 | $ 14,296 | $ 43,213 | $ 36,916
Income tax (provision) benefit | 1,230 | (627) | 4,444 | 632
Share based compensation costs after tax | 14,720 | 10,808 | 38,769 | 35,278
Total unrecognized compensation costs related to awards | 123,400 |  | $ 123,400 |
Weighted-average period of recognition of unrecognized compensation costs |  |  | 2 years 3 months 18 days |
Continuing operations |  |  |  |
Stock-based compensation costs |  |  |  |
Share based compensation costs after tax | 14,720 | 14,923 | $ 38,769 | 36,284
Discontinued operations |  |  |  |
Stock-based compensation costs |  |  |  |
Share based compensation costs after tax |  | (4,115) |  | (1,006)
Cost of revenues |  |  |  |
Stock-based compensation costs |  |  |  |
Stock based compensation costs | 288 | 261 | 834 | 696
Research and development |  |  |  |
Stock-based compensation costs |  |  |  |
Stock based compensation costs | 8,788 | 7,071 | 23,482 | 18,190
Selling, general and administrative |  |  |  |
Stock-based compensation costs |  |  |  |
Stock based compensation costs | $ 6,874 | $ 6,964 | $ 18,897 | $ 18,030

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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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