Quarterly Condensed Statements of Income (Schedule of Quarterly Condensed Statements of Income) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2022	Dec. 31, 2021
Quarterly Financial Information Disclosure [Abstract]
Total interest and dividend income	$ 16,164	$ 14,366	$ 12,647	$ 11,509	$ 11,465	$ 10,782	$ 10,413	$ 10,016	$ 54,686	$ 42,676
Net interest income after provision for loan losses	12,326	12,899	11,559	10,599	10,792	10,099	9,695	8,930	47,383	39,516
Noninterest income	3,089	3,164	3,849	3,243	3,362	2,881	2,650	2,427	13,345	11,320
Noninterest expenses	11,548	11,058	10,528	9,923	11,883	9,523	8,727	7,916	43,057	38,049
Income before income taxes	3,867	5,005	4,880	3,919	2,271	3,457	3,618	3,441	17,671	12,787
Net income	$ 3,197	$ 4,082	$ 3,992	$ 3,250	$ 2,283	$ 2,873	$ 3,003	$ 2,862	$ 14,521	$ 11,021
Net income per common share, basic	$ 0.92	$ 1.17	$ 1.14	$ 0.94	$ 0.66	$ 0.83	$ 0.87	$ 0.84	$ 4.17	$ 3.20
Net income per common share, diluted	0.92	1.17	1.14	0.94	0.66	0.83	0.87	0.84	4.17	3.20
Dividends declared, per share	$ 0.30	$ 0.29	$ 0.28	$ 0.28	$ 0.28	$ 0.28	$ 0.27	$ 0.27	$ 1.15	$ 1.10