Stock-Based Compensation (Details) - USD ($) $ in Thousands	3 Months Ended
Apr. 02, 2022	Apr. 03, 2021
Stock-based compensation costs
Stock based compensation costs	$ 12,875	$ 11,368
Income tax benefit	1,845	682
Share based compensation costs after tax	11,030	12,161
Total unrecognized compensation costs related to awards	$ 87,300
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	$ 11,030	10,686
Discontinued operations
Stock-based compensation costs
Share based compensation costs after tax		1,475
Cost of revenues
Stock-based compensation costs
Stock based compensation costs	272	236
Research and development
Stock-based compensation costs
Stock based compensation costs	6,991	5,630
Selling, general and administrative
Stock-based compensation costs
Stock based compensation costs	$ 5,612	$ 5,502

Amount of expense (benefit) for award under share-based payment arrangement.

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Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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Amount, after tax, of expense for award under share-based payment arrangement.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

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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.

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