Quarterly Results of Operations (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2021	Dec. 31, 2020
Quarterly Financial Information Disclosure [Abstract]
Interest and dividend income	$ 20,075	$ 19,442	$ 18,644	$ 19,178	$ 20,526	$ 19,249	$ 19,023	$ 18,580	$ 77,339	$ 77,378
Interest expense	1,300	1,333	1,397	1,587	1,865	1,954	2,067	2,492	5,617	8,378
Net Interest Income	18,775	18,109	17,247	17,591	18,661	17,295	16,956	16,088	71,722	69,000
Provision for loan losses	150	150	150	1,450	2,675	1,590	1,525	503	1,900	6,293
Net Interest Income After Provision for Loan Losses	18,625	17,959	17,097	16,141	15,986	15,705	15,431	15,585	69,822	62,707
Noninterest income	5,672	5,643	6,403	6,775	6,193	6,420	5,823	4,731	24,493	23,167
Operating expenses	14,016	13,684	13,392	13,163	13,336	13,251	12,869	11,950	54,255	51,406
Income tax expense	1,771	1,780	1,869	1,688	1,582	1,589	1,531	1,621	7,108	6,323
Net Income	$ 8,510	$ 8,138	$ 8,239	$ 8,065	$ 7,261	$ 7,285	$ 6,854	$ 6,745	$ 32,952	$ 28,145
Earnings per share
Basic (in dollars per share)	$ 1.18	$ 1.12	$ 1.13	$ 1.10	$ 0.99	$ 0.99	$ 0.94	$ 0.92	$ 4.53	$ 3.84
Diluted (in dollars per share)	$ 1.17	$ 1.12	$ 1.13	$ 1.10	$ 0.99	$ 0.99	$ 0.93	$ 0.92	$ 4.51	$ 3.83