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Income Taxes - Additional Information (Details) - USD ($)
 3 Months Ended 6 Months Ended 12 Months Ended
Jul. 02, 2021
Jul. 03, 2020
Jul. 02, 2021
Jul. 03, 2020
Jan. 01, 2021
Income Taxes [Line Items]          
Income tax expense (benefit) $ 2,148,000 $ 556,000 $ 3,395,000 $ (602,000)  
Valuation allowance, deferred tax asset, increase (decrease), amount, COVID effect       $ 1,369,000  
Valuation allowance deferred tax asset, increase (decrease), amount, result of lower projected taxable income 845,000   845,000    
Unrecognized tax benefits related to uncertain tax positions 0   $ 0    
Percentage of deduction in GILTI     50.00%    
US          
Income Taxes [Line Items]          
Deferred Tax Assets, Net $ 3,025,000   $ 3,025,000   $ 3,870,000
Federal          
Income Taxes [Line Items]          
Valuation allowance, deferred tax asset, increase (decrease), amount     37,315,000   34,681,000
State          
Income Taxes [Line Items]          
Valuation allowance, deferred tax asset, increase (decrease), amount     $ 7,879,000   $ 7,399,000