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Investment Securities - Cost basis and fair values of investment securities (Details) - USD ($) $ in Thousands | Mar. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Information concerning investments with unrealized gains and losses |  |
Investment securities available for sale, Cost Basis | $ 170,530 | $ 161,416
Investment securities available for sale, Gross Unrealized Gains | 790 | 3,167
Investment securities available for sale, Gross Unrealized Losses | (6,453) | (1,412)
Available for Sale, Fair Value, Total | 164,867 | 163,171
Investment securities held to maturity, Cost Basis | 58,419 | 53,751
Investment securities held to maturity, Gross Unrealized Gains | 491 | 2,001
Investment securities held to maturity, Gross Unrealized Losses | (1,789) | (236)
Held to Maturity, Fair Value, Total | 57,121 | 55,516
U.S. Agency |  |
Information concerning investments with unrealized gains and losses |  |
Investment securities available for sale, Cost Basis | 9,674 | 7,371
Investment securities available for sale, Gross Unrealized Gains |  | 86
Investment securities available for sale, Gross Unrealized Losses | (459) | (70)
Available for Sale, Fair Value, Total | 9,215 | 7,387
Investment securities held to maturity, Cost Basis | 2,500 | 2,500
Investment securities held to maturity, Gross Unrealized Losses | (165) | (11)
Held to Maturity, Fair Value, Total | 2,335 | 2,489
U.S. Agency mortgage-backed securities |  |
Information concerning investments with unrealized gains and losses |  |
Investment securities available for sale, Cost Basis | 85,978 | 80,136
Investment securities available for sale, Gross Unrealized Gains | 227 | 1,202
Investment securities available for sale, Gross Unrealized Losses | (4,820) | (1,171)
Available for Sale, Fair Value, Total | 81,385 | 80,167
Investment securities held to maturity, Cost Basis | 14,117 | 10,556
Investment securities held to maturity, Gross Unrealized Gains | 43 | 203
Investment securities held to maturity, Gross Unrealized Losses | (707) | (115)
Held to Maturity, Fair Value, Total | 13,453 | 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 | 153 | 851
Investment securities available for sale, Gross Unrealized Losses | (488) | (25)
Available for Sale, Fair Value, Total | 21,208 | 20,892
Investment securities held to maturity, Cost Basis | 34,295 | 33,188
Investment securities held to maturity, Gross Unrealized Gains | 438 | 1,734
Investment securities held to maturity, Gross Unrealized Losses | (877) | (103)
Held to Maturity, Fair Value, Total | 33,856 | 34,819
Corporate bonds. |  |
Information concerning investments with unrealized gains and losses |  |
Investment securities available for sale, Cost Basis | 53,335 | 53,843
Investment securities available for sale, Gross Unrealized Gains | 410 | 1,028
Investment securities available for sale, Gross Unrealized Losses | (686) | (146)
Available for Sale, Fair Value, Total | 53,059 | 54,725
Corporate bonds and other securities |  |
Information concerning investments with unrealized gains and losses |  |
Investment securities held to maturity, Cost Basis | 7,507 | 7,507
Investment securities held to maturity, Gross Unrealized Gains | 10 | 64
Investment securities held to maturity, Gross Unrealized Losses | (40) | (7)
Held to Maturity, Fair Value, Total | $ 7,477 | $ 7,564

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