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

11.  Defined Contribution Plan

The Company sponsors a 401(k) retirement plan in which substantially all of its full-time employees are eligible to participate. Participants may contribute a percentage of their annual compensation to this plan, subject to statutory limitations. During the years ended December 31, 2021, 2020, 2019, the Company provided $0.6 million, $0.5 million, and $0.3 million, respectively, in contributions to the plan.