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Investment securities (Details 1) - USD ($) | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2021 | Dec. 31, 2020
Less than 12 months, fair value | $ 86,769,000 | $ 87,953,000
Less than 12 months, unrealized losses | 1,636,000 | 652,000
12 months or more, fair value | 5,821,000 | 8,955,000
12 months or more, unrealized losses | 210,000 | 236,000
Total, fair value | 92,590,000 | 96,908,000
Total, unrealized losses | 1,846,000 | 888,000
U.S. Government Sponsored Enterprises [Member] |  |
Less than 12 months, fair value | 5,515,000 | 0
Less than 12 months, unrealized losses | 4,000 | 0
12 months or more, fair value | 3,841,000 | 4,193,000
12 months or more, unrealized losses | 191,000 | 208,000
Total, fair value | 9,356,000 | 4,193,000
Total, unrealized losses | 195,000 | 208,000
Mortgage-Backed Securities [Member] |  |
Less than 12 months, fair value | 41,819,000 | 80,827,000
Less than 12 months, unrealized losses | 635,000 | 565,000
12 months or more, fair value | 1,980,000 | 4,762,000
12 months or more, unrealized losses | 19,000 | 28,000
Total, fair value | 43,799,000 | 85,589,000
Total, unrealized losses | 654,000 | 593,000
State and Political Subdivisions [Member] |  |
Less than 12 months, fair value | 34,460,000 | 7,126,000
Less than 12 months, unrealized losses | 966,000 | 87,000
12 months or more, fair value | 0 | 0
12 months or more, unrealized losses | 0 | 0
Total, fair value | 34,460,000 | 7,126,000
Total, unrealized losses | 966,000 | $ 87,000
U.S. Treasuries [Member] |  |
Less than 12 months, fair value | 4,975,000 |
Less than 12 months, unrealized losses | 31,000 |
12 months or more, fair value | 0 |
12 months or more, unrealized losses | 0 |
Total, fair value | 4,975,000 |
Total, unrealized losses | $ 31,000 |

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