Goodwill and Intangible Assets - Deposits Purchased Premium and Discount (Details) - Deposits Purchased Premium (Discount) Net - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2022	Dec. 31, 2021
Deposits Purchased Premium (Discount)
Accretion period	5 years
Balance at beginning of period	$ (9)	$ (23)
Accretion, net	3	14
Balance at end of period	$ (6)	$ (9)