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

17.

Retirement Plan

We maintain a salary deferral 401(k) plan (“401(k) Plan”) covering employees who have met certain eligibility requirements. Employees may defer up to 100% of their compensation to the 401(k) Plan, subject to federal limits. We made $2.5 million and $1.6 million in discretionary contributions during the year ended December 31, 2021 and 2020, respectively, which are fully vested after one year of employee service. We did not make any discretionary contributions during the year ended December 31, 2019.