Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 2,885	$ 2,483
Other comprehensive income (loss)
Unrealized (losses) gains arising during the period	(3,607)	540
Amortization of discount on securities transferred to held-to-maturity	16	14
Income tax effect	755	(116)
Other comprehensive income (loss)	(2,836)	438
Total comprehensive income	$ 49	$ 2,921