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Investment Securities | 9 Months Ended
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Sep. 30, 2021
Investment Securities [Abstract] |
Investment Securities | Note 3 – Investment Securities The following tables provide information on the amortized cost and estimated fair values of debt securities. ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | ​ | ​ |  | Gross |  | Gross |  | Estimated
​ | ​ | Amortized | ​ | Unrealized | ​ | Unrealized | ​ | Fair
(Dollars in thousands) | ​ | Cost | ​ | Gains | ​ | Losses | ​ | Value
Available-for-sale securities: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
September 30, 2021 | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
U.S. Government agencies | ​ | $ | 18,557 | ​ | $ | 4 | ​ | $ | 578 | ​ | $ | 17,983
Mortgage-backed | ​ |  | 86,254 | ​ |  | 1,634 | ​ |  | 746 | ​ |  | 87,142
Total | ​ | $ | 104,811 | ​ | $ | 1,638 | ​ | $ | 1,324 | ​ | $ | 105,125
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
December 31, 2020 | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
U.S. Government agencies | ​ | $ | 23,600 | ​ | $ | 20 | ​ | $ | 83 | ​ | $ | 23,537
Mortgage-backed | ​ |  | 113,865 | ​ |  | 2,234 | ​ |  | 68 | ​ |  | 116,031
Total | ​ | $ | 137,465 | ​ | $ | 2,254 | ​ | $ | 151 | ​ | $ | 139,568
​ No available for sale securities were sold during the three and nine months ended September 30, 2021. During the three months ended September 30, 2020, no available for sale securities were sold. During the nine months ended September 30, 2020, the Company sold available for sale securities for proceeds of $13.0 million and recognized gross gains of $347 thousand. ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | ​ | ​ |  | Gross |  | Gross |  | Estimated
​ | ​ | Amortized | ​ | Unrealized | ​ | Unrealized | ​ | Fair
(Dollars in thousands) | ​ | Cost | ​ | Gains | ​ | Losses | ​ | Value
Held-to-maturity securities: |  | ​ | ​ |  | ​ | ​ |  | ​ | ​ |  | ​ | ​
September 30, 2021 | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
U.S. Government agencies | ​ | $ | 67,772 | ​ | $ | 26 | ​ | $ | 556 | ​ | $ | 67,242
Mortgage-backed | ​ | ​ | 169,802 | ​ | ​ | 36 | ​ | ​ | 2,302 | ​ | ​ | 167,536
States and political subdivisions | ​ |  | 400 | ​ |  | 2 | ​ |  | — | ​ |  | 402
Other debt securities | ​ |  | 12,527 | ​ |  | 133 | ​ |  | 5 | ​ |  | 12,655
Total | ​ | $ | 250,501 | ​ | $ | 197 | ​ | $ | 2,863 | ​ | $ | 247,835
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
December 31, 2020 | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
U.S. Government agencies | ​ | $ | 18,893 | ​ | $ | 38 | ​ | $ | 43 | ​ | $ | 18,888
Mortgage-backed | ​ | ​ | 27,347 | ​ | ​ | 7 | ​ | ​ | 18 | ​ | ​ | 27,336
States and political subdivisions | ​ |  | 400 | ​ |  | 1 | ​ |  | — | ​ |  | 401
Other debt securities | ​ |  | 19,066 | ​ |  | 139 | ​ |  | 2 | ​ |  | 19,203
Total | ​ | $ | 65,706 | ​ | $ | 185 | ​ | $ | 63 | ​ | $ | 65,828
​ Equity securities with an aggregate fair value of $1.4 million at September 30, 2021 and December 31, 2020 are presented separately on the balance sheet. The fair value adjustment recorded through earnings totaled $(24) thousand for the nine months ended September 30, 2021 and $34 thousand for the nine months ended September 30, 2020, respectively. ​ The following tables provide information about gross unrealized losses and fair value by length of time that the individual securities have been in a continuous unrealized loss position at September 30, 2021 and December 31, 2020. ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Less than | ​ | More than | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | 12 Months | ​ | 12 Months | ​ | Total
​ |  | Fair |  | Unrealized |  | Fair |  | Unrealized |  | Fair |  | Unrealized
(Dollars in thousands) | ​ | Value | ​ | Losses | ​ | Value | ​ | Losses | ​ | Value | ​ | Losses
September 30, 2021 | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Available-for-sale securities: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
U.S. Government agencies | ​ | $ | 2,886 | ​ | $ | 113 | ​ | $ | 14,746 | ​ | $ | 465 | ​ | $ | 17,632 | ​ | $ | 578
Mortgage-backed | ​ |  | 37,837 | ​ |  | 723 | ​ |  | 3,947 | ​ |  | 23 | ​ |  | 41,784 | ​ |  | 746
Total | ​ | $ | 40,723 | ​ | $ | 836 | ​ | $ | 18,693 | ​ | $ | 488 | ​ | $ | 59,416 | ​ | $ | 1,324
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Held-to-maturity securities: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
U.S. Government agencies | ​ | $ | 61,371 | ​ | $ | 556 | ​ | $ | — | ​ | $ | — | ​ | $ | 61,371 | ​ | $ | 556
Mortgage-backed | ​ | ​ | 155,548 | ​ | ​ | 2,302 | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 155,548 | ​ | ​ | 2,302
Other debt securities | ​ | ​ | 495 | ​ | ​ | 5 | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 495 | ​ | ​ | 5
Total | ​ | $ | 217,414 | ​ | $ | 2,863 | ​ | $ | — | ​ | $ | — | ​ | $ | 217,414 | ​ | $ | 2,863
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Less than | ​ | More than | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | 12 Months | ​ | 12 Months | ​ | Total
​ |  | Fair |  | Unrealized |  | Fair |  | Unrealized |  | Fair |  | Unrealized
(Dollars in thousands) | ​ | Value | ​ | Losses | ​ | Value | ​ | Losses | ​ | Value | ​ | Losses
December 31, 2020 | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Available-for-sale securities: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
U.S. Government agencies | ​ | $ | 14,919 | ​ | $ | 82 | ​ | $ | 236 | ​ | $ | 1 | ​ | $ | 15,155 | ​ | $ | 83
Mortgage-backed | ​ |  | 11,869 | ​ |  | 68 | ​ |  | — | ​ |  | — | ​ |  | 11,869 | ​ |  | 68
Total | ​ | $ | 26,788 | ​ | $ | 150 | ​ | $ | 236 | ​ | $ | 1 | ​ | $ | 27,024 | ​ | $ | 151
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Held-to-maturity securities: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
U.S. Government agencies | ​ | $ | 6,646 | ​ | $ | 43 | ​ | $ | — | ​ | $ | — | ​ | $ | 6,646 | ​ | $ | 43
Mortgage-backed | ​ | ​ | 5,093 | ​ | ​ | 18 | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 5,093 | ​ | ​ | 18
Other debt securities | ​ |  | 498 | ​ |  | 2 | ​ |  | — | ​ |  | — | ​ |  | 498 | ​ |  | 2
Total | ​ | $ | 12,237 | ​ | $ | 63 | ​ | $ | — | ​ | $ | — | ​ | $ | 12,237 | ​ | $ | 63
​ All of the securities with unrealized losses in the portfolio have modest duration risk, low credit risk, and minimal losses when compared to total amortized cost. The unrealized losses on debt securities that exist are the result of market changes in interest rates since original purchase. Because the Company does not intend to sell these securities and it is not more likely than not that the Company will be required to sell these securities before recovery of their amortized cost basis, which may be at maturity for debt securities, the Company considers the unrealized losses to be temporary. There were nineteen available-for-sale securities and forty-six held-to-maturity securities in an unrealized loss position at September 30, 2021. The following table provides information on the amortized cost and estimated fair values of investment securities by maturity date at September 30, 2021. ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Available for sale | ​ | Held to maturity
​ |  | Amortized |  | ​ | ​ |  | Amortized |  | ​ | ​
(Dollars in thousands) | ​ | Cost | ​ | Fair Value | ​ | Cost | ​ | Fair Value
Due in one year or less | ​ | $ | — | ​ | $ | — | ​ | $ | 2,921 | ​ | $ | 2,954
Due after one year through five years | ​ |  | 799 | ​ |  | 825 | ​ |  | 9,982 | ​ |  | 9,959
Due after five years through ten years | ​ |  | 51,665 | ​ |  | 52,410 | ​ |  | 55,874 | ​ |  | 55,560
Due after ten years | ​ |  | 52,347 | ​ |  | 51,890 | ​ |  | 181,724 | ​ |  | 179,362
Total | ​ | $ | 104,811 | ​ | $ | 105,125 | ​ | $ | 250,501 | ​ | $ | 247,835
​ The maturity dates for debt securities are determined using contractual maturity dates.

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