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Securities (Tables) | 9 Months Ended
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Sep. 30, 2021
Investments, Debt and Equity Securities [Abstract] |
Schedule of Available-for-sale Securities Reconciliation | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | September 30, 2021
​ |  | ​ | ​ |  | Gross |  | Gross |  | ​ | ​
​ | ​ | Amortized | ​ | Unrealized | ​ | Unrealized | ​ | Fair
​ | ​ | Cost | ​ | Gains | ​ | Losses | ​ | Value
U.S. Treasury | ​ | $ | 93,910 | ​ | $ | 176 | ​ | $ | (61) | ​ | $ | 94,025
U.S. Government-sponsored enterprises (GSEs) | ​ | ​ | 54,175 | ​ | ​ | 201 | ​ | ​ | (913) | ​ | ​ | 53,463
Municipal securities | ​ |  | 93,422 | ​ |  | 2,179 | ​ |  | (31) | ​ |  | 95,570
Other debt securities | ​ |  | 25,996 | ​ |  | 367 | ​ |  | (72) | ​ |  | 26,291
Mortgage-backed securities (GSEs) | ​ |  | 68,837 | ​ |  | 1,339 | ​ |  | (182) | ​ |  | 69,994
Total | ​ | $ | 336,340 | ​ | $ | 4,262 | ​ | $ | (1,259) | ​ | $ | 339,343
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31, 2020
​ |  | ​ | ​ |  | Gross |  | Gross |  | ​ | ​
​ | ​ | Amortized | ​ | Unrealized | ​ | Unrealized | ​ | Fair
​ | ​ | Cost | ​ | Gains | ​ | Losses | ​ | Value
U.S. Government-sponsored enterprises (GSEs) | ​ | $ | 30,526 | ​ | $ | 10 | ​ | $ | (6) | ​ | $ | 30,530
Municipal securities | ​ |  | 89,644 | ​ |  | 2,345 | ​ |  | — | ​ |  | 91,989
Other debt securities | ​ |  | 25,019 | ​ |  | 112 | ​ |  | (13) | ​ |  | 25,118
Mortgage-backed securities (GSEs) | ​ |  | 66,425 | ​ |  | 1,754 | ​ |  | (182) | ​ |  | 67,997
Total | ​ | $ | 211,614 | ​ | $ | 4,221 | ​ | $ | (201) | ​ | $ | 215,634
​
Proceeds from sale of securities available for sale, gains losses and proceeds from redemption | Proceeds from sale of securities available-for-sale, gross gains and gross losses on sales and redemptions for the three and nine months ended September 30, 2021, and 2020 were as follows (in thousands):
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended | ​ | Nine Months Ended
​ | ​ | September 30, | ​ | September 30,
​ |  | 2021 |  | 2020 | ​ | 2021 |  | 2020
Proceeds from sales | ​ | $ | 16,771 | ​ | $ | 4,884 | ​ | $ | 16,771 | ​ | $ | 11,759
Gross gains | ​ | $ | 64 | ​ | $ | 17 | ​ | $ | 64 | ​ | $ | 43
Gross losses | ​ | $ | (19) | ​ | $ | (26) | ​ | $ | (19) | ​ | $ | (37)
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Proceeds from maturities and calls | ​ | $ | 32,275 | ​ | $ | 30,350 | ​ | $ | 43,551 | ​ | $ | 45,800
Investments Classified by Contractual Maturity Date | The amortized cost and estimated fair value of securities at September 30, 2021, by contractual maturity for non-mortgage backed securities are shown below (in thousands). Expected maturities may differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties.
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | September 30, 2021
​ |  | Amortized |  | Fair
​ | ​ | Cost | ​ | Value
Due in one year or less | ​ | $ | 61,259 | ​ | $ | 61,267
Due from one year to five years | ​ |  | 3,817 | ​ |  | 3,843
Due from five years to ten years | ​ |  | 90,688 | ​ |  | 91,409
Due after ten years | ​ |  | 111,739 | ​ |  | 112,830
​ | ​ |  | 267,503 | ​ |  | 269,349
Mortgage-backed securities | ​ |  | 68,837 | ​ |  | 69,994
Total | ​ | $ | 336,340 | ​ | $ | 339,343
​
Schedule of Unrealized Loss on Investments | ​ The following tables present the gross unrealized losses and fair value, aggregated by investment category and length of time that individual securities available-for-sale have been in a continuous unrealized loss position (in thousands):
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | September 30, 2021
​ | ​ | Less than 12 Months | ​ | 12 Months or Greater | ​ | Total
​ |  | ​ | ​ |  | Gross | ​ | Number |  | ​ | ​ |  | Gross | ​ | Number |  | ​ | ​ |  | Gross | ​ | Number
​ | ​ | Fair | ​ | Unrealized | ​ | of | ​ | Fair | ​ | Unrealized | ​ | of | ​ | Fair | ​ | Unrealized | ​ | of
​ | ​ | Value | ​ | Losses | ​ | Securities | ​ | Value | ​ | Losses | ​ | Securities | ​ | Value | ​ | Losses | ​ | Securities
U.S. Treasury | ​ | $ | 76,626 | ​ | $ | (61) | ​ | 4 | ​ | $ | — | ​ | $ | — | ​ | — | ​ | $ | 76,626 | ​ | $ | (61) | ​ | 4
U.S. Government-sponsored enterprises (GSEs) | ​ | ​ | 37,469 | ​ | ​ | (910) | ​ | 10 | ​ | ​ | 841 | ​ | ​ | (3) | ​ | 3 | ​ | ​ | 38,310 | ​ | ​ | (913) | ​ | 13
Municipal securities | ​ |  | 3,929 | ​ |  | (31) | ​ | 3 | ​ |  | — | ​ |  | — | ​ | — | ​ |  | 3,929 | ​ |  | (31) | ​ | 3
Other debt securities | ​ |  | 5,982 | ​ |  | (72) | ​ | 6 | ​ |  | — | ​ |  | — | ​ | — | ​ |  | 5,982 | ​ |  | (72) | ​ | 6
Mortgage-backed securities (GSEs) | ​ |  | 8,891 | ​ |  | (59) | ​ | 8 | ​ |  | 8,780 | ​ |  | (123) | ​ | 6 | ​ |  | 17,671 | ​ |  | (182) | ​ | 14
Total | ​ | $ | 132,897 | ​ | $ | (1,133) | ​ | 31 | ​ | $ | 9,621 | ​ | $ | (126) | ​ | 9 | ​ | $ | 142,518 | ​ | $ | (1,259) | ​ | 40
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31, 2020
​ | ​ | Less than 12 Months | ​ | 12 Months or Greater | ​ | Total
​ |  | ​ | ​ |  | Gross | ​ | Number |  | ​ | ​ |  | Gross | ​ | Number |  | ​ | ​ |  | Gross | ​ | Number
​ | ​ | Fair | ​ | Unrealized | ​ | of | ​ | Fair | ​ | Unrealized | ​ | of | ​ | Fair | ​ | Unrealized | ​ | of
​ | ​ | Value | ​ | Losses | ​ | Securities | ​ | Value | ​ | Losses | ​ | Securities | ​ | Value | ​ | Losses | ​ | Securities
U.S. Government-sponsored enterprises (GSEs) | ​ | $ | 15,510 | ​ | $ | (5) | ​ | 3 | ​ | $ | 132 | ​ | $ | (1) | ​ | 1 | ​ | $ | 15,642 | ​ | $ | (6) | ​ | 4
Other debt securities | ​ |  | 1,495 | ​ |  | (5) | ​ | 1 | ​ |  | 977 | ​ |  | (8) | ​ | 1 | ​ |  | 2,472 | ​ |  | (13) | ​ | 2
Mortgage-backed securities (GSEs) | ​ |  | 9,790 | ​ |  | (87) | ​ | 6 | ​ |  | 6,083 | ​ |  | (95) | ​ | 3 | ​ |  | 15,873 | ​ |  | (182) | ​ | 9
Total | ​ | $ | 26,795 | ​ | $ | (97) | ​ | 10 | ​ | $ | 7,192 | ​ | $ | (104) | ​ | 5 | ​ | $ | 33,987 | ​ | $ | (201) | ​ | 15
​
Schedule of Other Investments | The following is the amortized cost and carrying value of other investments (in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | September 30, | ​ | December 31,
​ |  | 2021 |  | 2020
Federal Reserve Bank stock | ​ | $ | 8,171 |  | $ | 8,606
Federal Home Loan Bank stock | ​ |  | 6,451 |  | ​ | 5,838
First National Bankers Bank stock | ​ |  | 350 |  | ​ | 350
Total | ​ | $ | 14,972 | ​ | $ | 14,794
​

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