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Stock-Based Compensation (Details) - USD ($) $ in Thousands | 3 Months Ended
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Apr. 01, 2023 | Apr. 02, 2022
Stock-based compensation costs |  |
Stock based compensation costs | $ 16,638 | $ 12,875
Income tax benefit | 1,786 | 1,845
Share based compensation costs after tax | 14,852 | 11,030
Total unrecognized compensation costs related to awards | $ 110,900 |
Weighted-average period of recognition of unrecognized compensation costs | 2 years 1 month 6 days |
Cost of revenues |  |
Stock-based compensation costs |  |
Stock based compensation costs | $ 298 | 272
Research and development |  |
Stock-based compensation costs |  |
Stock based compensation costs | 9,491 | 6,991
Selling, general and administrative |  |
Stock-based compensation costs |  |
Stock based compensation costs | $ 6,849 | $ 5,612

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- Definition Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + 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 (i) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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