Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 2,052	$ 1,317	$ 5,248	$ 4,562
Other comprehensive income (loss), net of tax:
Change in fair value of securities available for sale, net of tax, $(100), $101, $(619) and $219, respectively	374	(379)	2,328	(826)
Reclassification adjustment for gains on securities available for sale, net of tax, $0, $0, $17 and $176, respectively			(62)	(662)
Change in fair value of interest rate swap, net of tax, $37, $(16), $98 and $(66), respectively	(141)	61	(369)	250
Total other comprehensive income (loss), net of tax, $(63), $85, $(504) and $329, respectively	233	(318)	1,897	(1,238)
Total comprehensive income	$ 2,285	$ 999	$ 7,145	$ 3,324