Quarterly Financial Data (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019
Quarterly Financial Information Disclosure [Abstract]
Interest and dividend income	$ 9,305	$ 9,343	$ 9,139	$ 8,963	$ 9,234	$ 9,140	$ 8,904	$ 8,592	$ 36,750	$ 35,870
Interest expense	1,171	1,158	1,361	1,457	1,483	1,493	1,397	1,227	5,147	5,600
Net interest income	8,134	8,185	7,778	7,506	7,751	7,647	7,507	7,365	31,603	30,270
Provision for loan losses	600	800	500	300	425	150	150	50	2,200	775
Noninterest income	4,989	5,508	2,988	2,518	3,029	2,723	2,471	2,232	16,003	10,455
Noninterest expenses	7,904	7,995	7,111	7,172	7,140	7,005	6,800	6,527	30,182	27,472
Net income	$ 3,794	$ 4,147	$ 2,668	$ 2,196	$ 2,759	$ 2,738	$ 2,530	$ 2,621	$ 12,805	$ 10,648
Basic earnings per common share (in usd per share)	$ 0.85	$ 0.92	$ 0.60	$ 0.49	$ 0.61	$ 0.62	$ 0.56	$ 0.59	$ 2.86	$ 2.38