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Income Taxes - 2020 Tax Law Updates (Details) - USD ($)
 12 Months Ended
Jun. 29, 2020
Mar. 27, 2020
Dec. 31, 2020
Effective tax rate of provision for income taxes difference from federal statutory rate      
Net Operating Loss Carryback   5 years  
Deduction of Taxable Income, Percentage   80.00%  
Amount of income limit for California Net Operating Loss deductions $ 1,000,000    
Amount of California tax offset for business credit $ 5,000,000    
Australian      
Effective tax rate of provision for income taxes difference from federal statutory rate      
Foreign income tax benefit     $ 0