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401(k) Plan
 12 Months Ended
Dec. 31, 2021
Compensation And Retirement Disclosure [Abstract]  
401(k) Plan

12. 401(k) Plan

The Company maintains a 401(k) plan covering all eligible employees. Subject to certain dollar limits, eligible employees may contribute up to 15% of their pre-tax annual compensation to the plan. The Company may make discretionary contributions on an annual basis. The Company makes matching contributions of 40% of employee eligible contributions up to 6% of their gross salaries.  The Company’s matching contributions were $0.8 million for each of the fiscal years ended December 31, 2021, January 1, 2021 and December 27, 2019, respectively.