Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 1,578	$ 1,564	$ 2,974	$ 3,196
Other comprehensive income, net of tax:
Change in fair value of securities available for sale, net of tax, $(188), $(257), $(580) and $(519), respectively	708	970	2,181	1,954
Reclassification adjustment for gains on securities available for sale, net of tax, $0, $0, $0 and $17, respectively				(62)
Change in fair value of interest rate swap, net of tax, $(1), $37, $104 and $61, respectively	6	(136)	(393)	(228)
Total other comprehensive income, net of tax, $(189), $(220), $(476) and $(441), respectively	714	834	1,788	1,664
Total comprehensive income	$ 2,292	$ 2,398	$ 4,762	$ 4,860