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Retirement Plan (Details) - USD ($)
$ in Millions
12 Months Ended
Jan. 01, 2020
Dec. 31, 2020
Dec. 31, 2019
Retirement Plan      
Matching contribution 401(k) 50.00%    
Matching contribution per employee 6.00%    
Employer matching contribution 3.00%    
Company contributions   $ 0.5 $ 0.0