Quarterly Financial Data (Unaudited) - Summary of Quarterly Financial Data (Detail) - 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]
Interest Income	$ 10,418	$ 9,156	$ 8,003	$ 7,242	$ 7,129	$ 7,805	$ 7,014	$ 7,581	$ 34,819	$ 29,529
Net Interest Income	9,268	8,560	7,630	6,865	6,713	7,325	6,471	7,008	32,323	27,517
Net income	$ 3,753	$ 3,650	$ 3,209	$ 2,701	$ 2,306	$ 2,901	$ 2,745	$ 2,885	$ 13,313	$ 10,837
Basic Earnings Per Share	$ 1.39	$ 1.35	$ 1.18	$ 0.99	$ 0.85	$ 1.06	$ 1.00	$ 1.05	$ 4.91	$ 3.97
Diluted Earnings Per Share	$ 1.39	$ 1.35	$ 1.18	$ 0.99	$ 0.85	$ 1.06	$ 1.00	$ 1.05	$ 4.91	$ 3.97