Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 2,901	$ 2,800	$ 8,531	$ 7,889
Other comprehensive (loss) income
Unrealized (losses) gains arising during the period	(831)	(202)	(2,790)	955
Amortization of discount on securities transferred to held-to-maturity	11	17	44	47
Income tax effect	172	39	577	(210)
Other comprehensive (loss) income	(648)	(146)	(2,169)	792
Total comprehensive income	$ 2,253	$ 2,654	$ 6,362	$ 8,681