Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 2,745	$ 2,606	$ 5,630	$ 5,089
Other comprehensive income (loss)
Unrealized (losses) gains arising during the period	1,649	617	(1,958)	1,157
Amortization of discount on securities transferred to held-to-maturity	16	16	32	30
Income tax effect	(350)	(133)	405	(249)
Other comprehensive income (loss)	1,315	500	(1,521)	938
Total comprehensive income	$ 4,060	$ 3,106	$ 4,109	$ 6,027