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Employee Benefit Plan - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Retirement Benefits [Abstract]        
Employer matching contribution (percentage)     50.00%  
Employer matching contribution as a percent of employees' gross pay (percentage)     12.00%  
Employer contribution amount $ 0.6 $ 0.2 $ 1.8 $ 0.8