Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 1,564	$ 1,659	$ 3,196	$ 3,245
Other comprehensive income (loss), net of tax:
Change in fair value of securities available for sale, net of tax, $(257), $3, $(519) and $118, respectively	970	(20)	1,954	(457)
Reclassification adjustment for gains on securities available for sale, net of tax, $0, $64, $17 and $176, respectively		(239)	(62)	(662)
Change in fair value of interest rate swap, net of tax, $37, $(12), $61 and $(50), respectively	(136)	46	(228)	189
Total other comprehensive income (loss), net of tax, $(220), $55, $(441) and $244, respectively	834	(213)	1,664	(930)
Total comprehensive income	$ 2,398	$ 1,446	$ 4,860	$ 2,315