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v3.23.3

Securities (Tables) | 9 Months Ended
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Sep. 30, 2023
Securities |
Summary of available for sale debt securities | ​ ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | September 30, 2023 |
​ |  | ​ | ​ |  | Gross |  | Gross |  | ​ | ​ |
​ | ​ | Amortized | ​ | Unrealized | ​ | Unrealized | ​ | ​ |
(Dollars in thousands) | ​ | Cost | ​ | Gains | ​ | Losses | ​ | Fair Value |
U.S. Treasury securities | ​ | $ | 52,785 | ​ | $ | — | ​ | $ | (1,391) | ​ | $ | 51,394 | ​
U.S. government agencies and corporations | ​ | ​ | 106,455 | ​ | ​ | — | ​ | ​ | (12,405) | ​ | ​ | 94,050 | ​
Mortgage-backed securities | ​ |  | 183,552 | ​ |  | 2 | ​ |  | (23,239) | ​ |  | 160,315 | ​
Obligations of states and political subdivisions | ​ |  | 142,593 | ​ |  | 97 | ​ | ​ | (8,525) | ​ |  | 134,165 | ​
Corporate and other debt securities | ​ | ​ | 25,212 | ​ | ​ | — | ​ | ​ | (4,483) | ​ | ​ | 20,729 | ​
​ | ​ | $ | 510,597 | ​ | $ | 99 | ​ | $ | (50,043) | ​ | $ | 460,653 | ​
​ ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31, 2022 |
​ |  | ​ | ​ |  | Gross |  | Gross |  | ​ | ​ |
​ | ​ | Amortized | ​ | Unrealized | ​ | Unrealized | ​ | ​ |
(Dollars in thousands) | ​ | Cost | ​ | Gains | ​ | Losses | ​ | Fair Value |
U.S. Treasury securities | ​ | $ | 60,886 | ​ | $ | — | ​ | $ | (2,053) | ​ | $ | 58,833 | ​
U.S. government agencies and corporations | ​ | ​ | 143,241 | ​ | ​ | — | ​ | ​ | (12,967) | ​ | ​ | 130,274 | ​
Mortgage-backed securities | ​ |  | 200,393 | ​ |  | 65 | ​ |  | (20,540) | ​ |  | 179,918 | ​
Obligations of states and political subdivisions | ​ |  | 127,317 | ​ |  | 300 | ​ |  | (6,790) | ​ |  | 120,827 | ​
Corporate and other debt securities | ​ |  | 25,291 | ​ |  | — | ​ |  | (2,552) | ​ |  | 22,739 | ​
​ | ​ | $ | 557,128 | ​ | $ | 365 | ​ | $ | (44,902) | ​ | $ | 512,591 | ​
Schedule of amortized cost and estimated fair value of securities, by the earlier of contractual maturity or expected maturity | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | September 30, 2023 |
​ |  | Amortized |  | ​ |
(Dollars in thousands) | ​ | Cost | ​ | Fair Value |
Due in one year or less | ​ | $ | 122,708 | ​ | $ | 117,683 | ​
Due after one year through five years | ​ |  | 180,708 | ​ |  | 161,000 | ​
Due after five years through ten years | ​ |  | 123,319 | ​ |  | 105,599 | ​
Due after ten years | ​ |  | 83,862 | ​ |  | 76,371 | ​
​ | ​ | $ | 510,597 | ​ | $ | 460,653 | ​
Schedule of gross realized gains and losses and the proceeds | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended September 30, | ​ | Nine Months Ended September 30,
(Dollars in thousands) |  | 2023 |  | 2022 |  | 2023 | ​ | 2022
Realized gains from sales, maturities and calls of securities: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Gross realized gains | ​ | $ | — | ​ | $ | — | ​ | $ | — | ​ | $ | —
Gross realized losses | ​ |  | — | ​ |  | — | ​ |  | (5) | ​ |  | —
Net realized losses | ​ | $ | — | ​ | $ | — | ​ | $ | (5) | ​ | $ | —
Proceeds from sales, maturities, calls and paydowns of securities | ​ | $ | 30,719 | ​ | $ | 12,700 | ​ | $ | 75,560 | ​ | $ | 43,681
Schedule of securities in an unrealized loss position | Securities in an unrealized loss position at September 30, 2023, by duration of the period of the unrealized loss, are shown below. ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Less Than 12 Months | ​ | 12 Months or More | ​ | Total |
​ |  | Fair |  | Unrealized |  | Fair |  | Unrealized |  | Fair |  | Unrealized |
(Dollars in thousands) | ​ | Value | ​ | Loss | ​ | Value | ​ | Loss | ​ | Value | ​ | Loss |
U.S. Treasury securities | ​ | $ | — | ​ | ​ | — | ​ | $ | 51,394 | ​ | $ | 1,391 | ​ | $ | 51,394 | ​ | $ | 1,391 | ​
U.S. government agencies and corporations | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 94,050 | ​ | ​ | 12,405 | ​ | ​ | 94,050 | ​ | ​ | 12,405 | ​
Mortgage-backed securities | ​ |  | 10,704 | ​ | ​ | 697 | ​ |  | 149,535 | ​ |  | 22,542 | ​ |  | 160,239 | ​ |  | 23,239 | ​
Obligations of states and political subdivisions | ​ |  | 44,075 | ​ | ​ | 1,657 | ​ |  | 71,081 | ​ |  | 6,868 | ​ |  | 115,156 | ​ |  | 8,525 | ​
Corporate and other debt securities | ​ | ​ | 3,260 | ​ | ​ | 489 | ​ | ​ | 17,469 | ​ | ​ | 3,994 | ​ | ​ | 20,729 | ​ | ​ | 4,483 | ​
Total temporarily impaired securities | ​ | $ | 58,039 | ​ | $ | 2,843 | ​ | $ | 383,529 | ​ | $ | 47,200 | ​ | $ | 441,568 | ​ | $ | 50,043 | ​
Securities in an unrealized loss position at December 31, 2022, by duration of the period of the unrealized loss, are shown below. ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Less Than 12 Months | ​ | 12 Months or More | ​ | Total |
​ |  | Fair |  | Unrealized |  | Fair |  | Unrealized |  | Fair |  | Unrealized |
(Dollars in thousands) | ​ | Value | ​ | Loss | ​ | Value | ​ | Loss | ​ | Value | ​ | Loss |
U.S. Treasury securities | ​ | $ | 50,556 | ​ | $ | 1,368 | ​ | $ | 8,277 | ​ | $ | 685 | ​ | $ | 58,833 | ​ | $ | 2,053 | ​
U.S. government agencies and corporations | ​ | ​ | 71,948 | ​ | ​ | 1,578 | ​ | ​ | 58,326 | ​ | ​ | 11,389 | ​ | ​ | 130,274 | ​ | ​ | 12,967 | ​
Mortgage-backed securities | ​ | ​ | 73,301 | ​ |  | 5,441 | ​ |  | 104,563 | ​ |  | 15,099 | ​ |  | 177,864 | ​ |  | 20,540 | ​
Obligations of states and political subdivisions | ​ | ​ | 60,838 | ​ | ​ | 2,434 | ​ | ​ | 32,120 | ​ | ​ | 4,356 | ​ | ​ | 92,958 | ​ | ​ | 6,790 | ​
Corporate and other debt securities | ​ |  | 15,049 | ​ |  | 1,702 | ​ |  | 6,681 | ​ |  | 850 | ​ |  | 21,730 | ​ |  | 2,552 | ​
Total temporarily impaired securities | ​ | $ | 271,692 | ​ | $ | 12,523 | ​ | $ | 209,967 | ​ | $ | 32,379 | ​ | $ | 481,659 | ​ | $ | 44,902 | ​

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