Aggregate fair value and gross unrealized loss of securities that have been in a continous unrealized loss position (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Aggregate Fair Value Gross Unrealized Loss Of Securities Less Than 12 Months Fair Value [Member]
Available-for-sale
U.S. Treasury	$ 8,091	$ 12,155
U.S. Government Agency notes	4,804	22,137
Municipal bonds	37,026	12,496
U.S. Government agencies and U.S. Government-sponsored enterprises	28,503	52,619
Corporate bonds	8,579	1,742
Total temporarily impaired securities	108,176	112,703
Aggregate Fair Value Gross Unrealized Loss Of Securities Less Than 12 Months Unrealized Losses [Member]
Available-for-sale
U.S. Treasury	763	182
U.S. Government Agency notes	589	235
Municipal bonds	8,290	204
U.S. Government agencies and U.S. Government-sponsored enterprises	3,960	740
Corporate bonds	671	8
Total temporarily impaired securities	17,329	1,554
Aggregate Fair Value Gross Unrealized Loss Of Securities 12 Months Or Longer Fair Value [Member]
Available-for-sale
U.S. Treasury	8,886
U.S. Government Agency notes	15,151	2,019
Municipal bonds	7,584	552
U.S. Government agencies and U.S. Government-sponsored enterprises	29,335	3,195
Corporate bonds
Total temporarily impaired securities	62,374	5,766
Aggregate Fair Value Gross Unrealized Loss Of Securities 12 Months Or Longer Unrealized Losses [Member]
Available-for-sale
U.S. Treasury	1,526
U.S. Government Agency notes	2,153	21
Municipal bonds	2,360
U.S. Government agencies and U.S. Government-sponsored enterprises	4,753	65
Corporate bonds
Total temporarily impaired securities	11,070	86
Aggregate Fair Value Gross Unrealized Loss Of Securities Total Fair Value [Member]
Available-for-sale
U.S. Treasury	16,977	12,155
U.S. Government Agency notes	19,955	24,156
Municipal bonds	44,610	13,048
U.S. Government agencies and U.S. Government-sponsored enterprises	57,838	55,814
Corporate bonds	8,579	1,742
Total temporarily impaired securities	170,550	118,469
Aggregate Fair Value Gross Unrealized Loss Of Securities Total Unrealized Losses [Member]
Available-for-sale
U.S. Treasury	2,289	182
U.S. Government Agency notes	2,742	256
Municipal bonds	10,650	204
U.S. Government agencies and U.S. Government-sponsored enterprises	8,713	805
Corporate bonds	671	8
Total temporarily impaired securities	$ 28,399	$ 1,640