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Income Taxes - Significant Categories of Deferred Taxes (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Jan. 01, 2022
--- | --- | ---
Deferred tax assets |  |
Inventory | $ 5,872 | $ 5,106
Accruals not currently deductible | 8,627 | 11,634
Equity-based compensation expense | 2,746 | 2,355
Property and equipment | 922 | 1,143
Intangible assets | 6,680 | 7,545
Capitalized R&D Expenses | 9,618 | 2,337
Tax credit carry forwards | 115,539 | 96,635
Net operating losses | 1,720 | 1,401
Other | 3,223 | 4,824
Gross deferred tax assets | 156,395 | 132,980
Valuation allowance | (118,136) | (99,958)
Net deferred tax assets | 38,259 | 33,022
Deferred tax liabilities |  |
Property and equipment | (5,723) | (5,268)
Deferred Tax Liabilities, Unrealized Currency Transaction Gains | 0 | 126
Foreign currency translation | (1,448) | 0
Prepaid expenses | (2,990) | (3,596)
Intangible assets | (6,680) | (7,545)
Withholding tax on unremitted earnings | (11,639) | (13,556)
Other | (5,499) | (5,589)
Gross deferred tax liabilities | (32,531) | (35,680)
Net deferred taxes | 5,728 |
Net deferred taxes |  | (2,658)
Net deferred tax assets | 9,799 | 4,839
Net deferred tax liabilities | $ (4,071) | $ (7,497)

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