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Income Taxes - Additional Information (Detail)
3 Months Ended 9 Months Ended
Sep. 28, 2020
USD ($)
Sep. 28, 2020
USD ($)
Income Tax Disclosure [Abstract]    
Change in valuation allowance   $ 0
Effective tax rate impacted by net discrete tax expense (benefit) $ (1,072,000) (5,890,000)
Tax on undistributed earnings $ 0 $ 0