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Investment Securities - Cost basis and fair values of investment securities (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Information concerning investments with unrealized gains and losses
Investment securities available for sale, Cost Basis	$ 183,348	$ 161,416
Investment securities available for sale, Gross Unrealized Gains	230	3,167
Investment securities available for sale, Gross Unrealized Losses	(11,326)	(1,412)
Available for Sale, Fair Value, Total	172,252	163,171
Investment securities held to maturity, Cost Basis	59,003	53,751
Investment securities held to maturity, Gross Unrealized Gains	91	2,001
Investment securities held to maturity, Gross Unrealized Losses	(3,979)	(236)
Held to Maturity, Fair Value, Total	55,115	55,516
U.S. Agency
Information concerning investments with unrealized gains and losses
Investment securities available for sale, Cost Basis	10,009	7,371
Investment securities available for sale, Gross Unrealized Gains		86
Investment securities available for sale, Gross Unrealized Losses	(723)	(70)
Available for Sale, Fair Value, Total	9,286	7,387
Investment securities held to maturity, Cost Basis	2,500	2,500
Investment securities held to maturity, Gross Unrealized Losses	(313)	(11)
Held to Maturity, Fair Value, Total	2,187	2,489
U.S. Agency mortgage-backed securities
Information concerning investments with unrealized gains and losses
Investment securities available for sale, Cost Basis	97,467	80,136
Investment securities available for sale, Gross Unrealized Gains	58	1,202
Investment securities available for sale, Gross Unrealized Losses	(8,144)	(1,171)
Available for Sale, Fair Value, Total	89,381	80,167
Investment securities held to maturity, Cost Basis	15,709	10,556
Investment securities held to maturity, Gross Unrealized Gains	27	203
Investment securities held to maturity, Gross Unrealized Losses	(1,383)	(115)
Held to Maturity, Fair Value, Total	14,353	10,644
Municipal
Information concerning investments with unrealized gains and losses
Investment securities available for sale, Cost Basis	21,543	20,066
Investment securities available for sale, Gross Unrealized Gains	36	851
Investment securities available for sale, Gross Unrealized Losses	(1,046)	(25)
Available for Sale, Fair Value, Total	20,533	20,892
Investment securities held to maturity, Cost Basis	34,287	33,188
Investment securities held to maturity, Gross Unrealized Gains	64	1,734
Investment securities held to maturity, Gross Unrealized Losses	(2,185)	(103)
Held to Maturity, Fair Value, Total	32,166	34,819
Corporate bonds.
Information concerning investments with unrealized gains and losses
Investment securities available for sale, Cost Basis	54,329	53,843
Investment securities available for sale, Gross Unrealized Gains	136	1,028
Investment securities available for sale, Gross Unrealized Losses	(1,413)	(146)
Available for Sale, Fair Value, Total	53,052	54,725
Corporate bonds and other securities
Information concerning investments with unrealized gains and losses
Investment securities held to maturity, Cost Basis	6,507	7,507
Investment securities held to maturity, Gross Unrealized Gains		64
Investment securities held to maturity, Gross Unrealized Losses	(98)	(7)
Held to Maturity, Fair Value, Total	$ 6,409	$ 7,564

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