Employee Benefits (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Retirement Benefits [Abstract]
Maximum contribution by participants under the 401(k) savings plan (as a percent)	60.00%
Employer's matching contribution in common stock as a percentage of a participant's total compensation, percent	4.50%
Common stock issued under the 401(k) savings plan (in shares)	13,611	20,788
Related expense for common stock issued under the 401(k) savings plan	$ 112	$ 108