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Employee Benefit Plans
12 Months Ended
Dec. 31, 2021
Retirement Benefits [Abstract]  
Employee Benefit Plans Employee Benefit PlansWe sponsor a 401(k) savings plan for our employees in the United States that stipulates that eligible employees may elect to contribute to the plan, subject to certain limitations, up to the lesser of 90% of eligible compensation or the maximum amount allowed by the U.S. Internal Revenue Service. In 2015, we implemented a match formula of 100% up to $2,000 annually, following a 4-year vesting schedule. In 2019, the match was increased to up to $3,000 annually. Employer matching contributions to the 401(k) plan were $0.6 million for the years ended December 31, 2021, 2020, and 2019.