Employee Benefit Plan (Details) - USD ($) $ in Millions			3 Months Ended
	Jan. 01, 2021	Dec. 31, 2020	Sep. 30, 2021	Sep. 30, 2020
Employee Benefit Plan
Company matching contributions (as a percent)	50.00%	50.00%
Maximum company contribution (as a percent)	2.00%	4.00%
Contributions to the plan			$ 0.3	$ 0.5