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Income Taxes - Income Before Provision for Income Taxes (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 30, 2023 | Dec. 31, 2022 | Jan. 01, 2022
Income Tax Expense (Benefit), Effective Income Tax Rate Reconciliation, Amount [Abstract] |  |  |
Federal income tax provision (benefit) at statutory rate | $ 27,842 | $ 50,732 | $ 32,693
State taxes, net of federal effect | 942 | 467 | 1,066
Foreign taxes, net of federal effect | (2,323) | (481) | (3,817)
Foreign Derived Intangible Income ("FDII") Deduction | (12,958) | (25,445) | (11,061)
US tax on foreign source income | (513) | (1,423) | (1,721)
Non-deductible officer's compensation | 2,301 | 1,910 | 689
Research & development tax credit | 6,430 | 7,146 | 3,607
Tax impact of audit and statue closures | (1,563) | (1,526) | (1,987)
Change in valuation allowance | 2,180 | (276) | (178)
Impact of the CARES Act | 0 | 0 | (732)
Other | 919 | (1,408) | (1,454)
Total income tax expense (benefit) | $ 11,423 | $ 18,250 | $ 13,333
Effective tax rate | 9.00% | 8.00% | 9.00%

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