Employee Savings Plan (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Retirement Benefits [Abstract]
Defined contribution plan, tax status [Extensible Enumeration]	Qualified Plan [Member]
Contributions made under 401(k) savings plan	$ 1.0	$ 0.8	$ 0.7