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Securities (Tables) | 12 Months Ended
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Dec. 31, 2024
Securities [Abstract] |
Schedule of Available-for-sale Securities Reconciliation | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31, 2024
​ |  | ​ | ​ |  | Gross |  | Gross |  | ​ | ​
​ | ​ | Amortized | ​ | Unrealized | ​ | Unrealized | ​ | Fair
Available-for-sale: | ​ | Cost | ​ | Gains | ​ | Losses | ​ | Value
U.S. Treasury | ​ | $ | 83,330 | ​ | $ | — | ​ | $ | (7,104) | ​ | $ | 76,226
U.S. Government-sponsored enterprises (GSEs) | ​ | ​ | 38,917 | ​ | ​ | 453 | ​ | ​ | (182) | ​ | ​ | 39,188
Municipal securities | ​ |  | 18,277 | ​ |  | — | ​ |  | (587) | ​ |  | 17,690
Other debt securities | ​ |  | 41,321 | ​ |  | 252 | ​ |  | (2,138) | ​ |  | 39,435
Mortgage-backed securities (GSEs) | ​ |  | 330,839 | ​ |  | 515 | ​ |  | (21,565) | ​ |  | 309,789
Total | ​ | $ | 512,684 | ​ | $ | 1,220 | ​ | $ | (31,576) | ​ | $ | 482,328
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31, 2023
​ |  | ​ | ​ |  | Gross |  | Gross |  | ​ | ​
​ | ​ | Amortized | ​ | Unrealized | ​ | Unrealized | ​ | Fair
Available-for-sale: | ​ | Cost | ​ | Gains | ​ | Losses | ​ | Value
U.S. Treasury | ​ | $ | 84,307 | ​ | $ | — | ​ | $ | (8,274) | ​ | $ | 76,033
U.S. Government-sponsored enterprises (GSEs) | ​ | ​ | 46,983 | ​ | ​ | 1,256 | ​ | ​ | (146) | ​ | ​ | 48,093
Municipal securities | ​ |  | 18,616 | ​ |  | 135 | ​ |  | (475) | ​ |  | 18,276
Other debt securities | ​ |  | 36,863 | ​ |  | 93 | ​ |  | (3,887) | ​ |  | 33,069
Mortgage-backed securities (GSEs) | ​ |  | 254,288 | ​ |  | 588 | ​ |  | (21,937) | ​ |  | 232,939
Total | ​ | $ | 441,057 | ​ | $ | 2,072 | ​ | $ | (34,719) | ​ | $ | 408,410
Schedule of Held-to-maturity Securities Reconciliation | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31, 2024
​ |  | ​ | ​ |  | Gross |  | Gross |  | ​ | ​
​ | ​ | Amortized | ​ | Unrealized | ​ | Unrealized | ​ | Fair
Held-to-maturity: | ​ | Cost | ​ | Gains | ​ | Losses | ​ | Value
U.S. Government-sponsored enterprises (GSEs) | ​ | $ | 48,112 | ​ | $ | — | ​ | $ | (7,335) | ​ | $ | 40,777
Municipal securities | ​ |  | 51,652 | ​ |  | — | ​ |  | (7,037) | ​ |  | 44,615
Mortgage-backed securities (GSEs) | ​ |  | 26,895 | ​ |  | — | ​ |  | (4,207) | ​ |  | 22,688
Total | ​ | $ | 126,659 | ​ | $ | — | ​ | $ | (18,579) | ​ | $ | 108,080
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31, 2023
​ |  | ​ | ​ |  | Gross |  | Gross |  | ​ | ​
​ | ​ | Amortized | ​ | Unrealized | ​ | Unrealized | ​ | Fair
Held-to-maturity: | ​ | Cost | ​ | Gains | ​ | Losses | ​ | Value
U.S. Treasury | ​ | $ | 150,066 | ​ | $ | — | ​ | $ | (1,482) | ​ | $ | 148,584
U.S. Government-sponsored enterprises (GSEs) | ​ | ​ | 49,336 | ​ | ​ | — | ​ | ​ | (7,143) | ​ | ​ | 42,193
Municipal securities | ​ |  | 52,680 | ​ |  | — | ​ |  | (6,178) | ​ |  | 46,502
Mortgage-backed securities (GSEs) | ​ |  | 29,154 | ​ |  | — | ​ |  | (3,895) | ​ |  | 25,259
Total | ​ | $ | 281,236 | ​ | $ | — | ​ | $ | (18,698) | ​ | $ | 262,538
Investments Classified by Contractual Maturity Date | The amortized cost and estimated market value of securities by contractual maturity, are shown below (in thousands). Expected maturities will differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties. ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31, 2024
​ |  | Amortized |  | Fair
Available-for-sale: | ​ | Cost | ​ | Value
Due in one year or less | ​ | $ | 1,479 | ​ | $ | 1,430
Due from one year to five years | ​ |  | 94,077 | ​ |  | 86,779
Due from five years to ten years | ​ |  | 77,077 | ​ |  | 75,403
Due after ten years | ​ |  | 9,212 | ​ |  | 8,927
​ | ​ |  | 181,845 | ​ |  | 172,539
Mortgage-backed securities | ​ |  | 330,839 | ​ |  | 309,789
Total | ​ | $ | 512,684 | ​ | $ | 482,328
​ | ​ | ​ | ​ | ​ | ​ | ​
Held-to-maturity: | ​ | ​ | ​ | ​ | ​ | ​
Due in one year or less | ​ | $ | — | ​ | $ | —
Due from one year to five years | ​ |  | 731 | ​ |  | 687
Due from five years to ten years | ​ |  | 50,594 | ​ |  | 43,465
Due after ten years | ​ |  | 48,439 | ​ |  | 41,240
​ | ​ |  | 99,764 | ​ |  | 85,392
Mortgage-backed securities | ​ |  | 26,895 | ​ |  | 22,688
Total | ​ | $ | 126,659 | ​ | $ | 108,080
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 and securities held-to-maturity have been in a continuous unrealized loss position, as of December 31, 2024 and 2023 (dollars in thousands):
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31, 2024
​ | ​ | Less than 12 Months | ​ | 12 Months or Greater | ​ | Total
​ |  | ​ | ​ |  | Gross | ​ | Number |  | ​ | ​ |  | Gross | ​ | Number |  | ​ | ​ |  | Gross | ​ | Number
​ | ​ | Fair | ​ | Unrealized | ​ | of | ​ | Fair | ​ | Unrealized | ​ | of | ​ | Fair | ​ | Unrealized | ​ | of
Available-for-sale: | ​ | Value | ​ | Losses | ​ | Securities | ​ | Value | ​ | Losses | ​ | Securities | ​ | Value | ​ | Losses | ​ | Securities
U.S. Treasury | ​ | $ | — | ​ | $ | — | ​ | — | ​ | $ | 76,226 | ​ | $ | (7,104) | ​ | 9 | ​ | $ | 76,226 | ​ | $ | (7,104) | ​ | 9
U.S. Government-sponsored enterprises (GSEs) | ​ | ​ | 9,069 | ​ | ​ | (80) | ​ | 4 | ​ | ​ | 4,813 | ​ | ​ | (102) | ​ | 4 | ​ | ​ | 13,882 | ​ | ​ | (182) | ​ | 8
Municipal securities | ​ |  | 5,579 | ​ |  | (59) | ​ | 8 | ​ |  | 11,322 | ​ |  | (528) | ​ | 17 | ​ |  | 16,901 | ​ |  | (587) | ​ | 25
Other debt securities | ​ |  | 4,425 | ​ |  | (36) | ​ | 3 | ​ |  | 28,294 | ​ |  | (2,102) | ​ | 24 | ​ |  | 32,719 | ​ |  | (2,138) | ​ | 27
Mortgage-backed securities (GSEs) | ​ |  | 80,111 | ​ |  | (939) | ​ | 39 | ​ |  | 160,129 | ​ |  | (20,626) | ​ | 83 | ​ |  | 240,240 | ​ |  | (21,565) | ​ | 122
Total | ​ | $ | 99,184 | ​ | $ | (1,114) | ​ | 54 | ​ | $ | 280,784 | ​ | $ | (30,462) | ​ | 137 | ​ | $ | 379,968 | ​ | $ | (31,576) | ​ | 191
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31, 2024
​ | ​ | Less than 12 Months | ​ | 12 Months or Greater | ​ | Total
​ |  | ​ | ​ |  | Gross | ​ | Number |  | ​ | ​ |  | Gross | ​ | Number |  | ​ | ​ |  | Gross | ​ | Number
​ | ​ | Fair | ​ | Unrealized | ​ | of | ​ | Fair | ​ | Unrealized | ​ | of | ​ | Fair | ​ | Unrealized | ​ | of
Held-to-maturity: | ​ | Value | ​ | Losses | ​ | Securities | ​ | Value | ​ | Losses | ​ | Securities | ​ | Value | ​ | Losses | ​ | Securities
U.S. Government-sponsored enterprises (GSEs) | ​ | $ | — | ​ | $ | — | ​ | — | ​ | $ | 40,777 | ​ | $ | (7,335) | ​ | 13 | ​ | $ | 40,777 | ​ | $ | (7,335) | ​ | 13
Municipal securities | ​ |  | — | ​ |  | — | ​ | — | ​ |  | 44,615 | ​ |  | (7,037) | ​ | 35 | ​ |  | 44,615 | ​ |  | (7,037) | ​ | 35
Mortgage-backed securities (GSEs) | ​ |  | — | ​ |  | — | ​ | — | ​ |  | 22,688 | ​ |  | (4,207) | ​ | 5 | ​ |  | 22,688 | ​ |  | (4,207) | ​ | 5
Total | ​ | $ | — | ​ | $ | — | ​ | — | ​ | $ | 108,080 | ​ | $ | (18,579) | ​ | 53 | ​ | $ | 108,080 | ​ | $ | (18,579) | ​ | 53
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31, 2023
​ | ​ | Less than 12 Months | ​ | 12 Months or Greater | ​ | Total
​ |  | ​ | ​ |  | Gross | ​ | Number |  | ​ | ​ |  | Gross | ​ | Number |  | ​ | ​ |  | Gross | ​ | Number
​ | ​ | Fair | ​ | Unrealized | ​ | of | ​ | Fair | ​ | Unrealized | ​ | of | ​ | Fair | ​ | Unrealized | ​ | of
Available-for-sale: | ​ | Value | ​ | Losses | ​ | Securities | ​ | Value | ​ | Losses | ​ | Securities | ​ | Value | ​ | Losses | ​ | Securities
U.S. Treasury | ​ | $ | — | ​ | $ | — | ​ | — | ​ | $ | 76,033 | ​ | $ | (8,274) | ​ | 9 | ​ | $ | 76,033 | ​ | $ | (8,274) | ​ | 9
U.S. Government-sponsored enterprises (GSEs) | ​ | ​ | 9,743 | ​ | ​ | (137) | ​ | 3 | ​ | ​ | 1,482 | ​ | ​ | (9) | ​ | 3 | ​ | ​ | 11,225 | ​ | ​ | (146) | ​ | 6
Municipal securities | ​ |  | 2,786 | ​ |  | (2) | ​ | 2 | ​ |  | 9,849 | ​ |  | (473) | ​ | 17 | ​ |  | 12,635 | ​ |  | (475) | ​ | 19
Other debt securities | ​ |  | 2,986 | ​ |  | (17) | ​ | 2 | ​ |  | 29,057 | ​ |  | (3,870) | ​ | 26 | ​ |  | 32,043 | ​ |  | (3,887) | ​ | 28
Mortgage-backed securities (GSEs) | ​ |  | 16,401 | ​ |  | (229) | ​ | 8 | ​ |  | 176,351 | ​ |  | (21,708) | ​ | 88 | ​ |  | 192,752 | ​ |  | (21,937) | ​ | 96
Total | ​ | $ | 31,916 | ​ | $ | (385) | ​ | 15 | ​ | $ | 292,772 | ​ | $ | (34,334) | ​ | 143 | ​ | $ | 324,688 | ​ | $ | (34,719) | ​ | 158
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31, 2023
​ | ​ | Less than 12 Months | ​ | 12 Months or Greater | ​ | Total
​ |  | ​ | ​ |  | Gross | ​ | Number |  | ​ | ​ |  | Gross | ​ | Number |  | ​ | ​ |  | Gross | ​ | Number
​ | ​ | Fair | ​ | Unrealized | ​ | of | ​ | Fair | ​ | Unrealized | ​ | of | ​ | Fair | ​ | Unrealized | ​ | of
Held-to-maturity: | ​ | Value | ​ | Losses | ​ | Securities | ​ | Value | ​ | Losses | ​ | Securities | ​ | Value | ​ | Losses | ​ | Securities
U.S. Treasury | ​ | $ | — | ​ | $ | — | ​ | — | ​ | $ | 148,584 | ​ | $ | (1,482) | ​ | 4 | ​ | $ | 148,584 | ​ | $ | (1,482) | ​ | 4
U.S. Government-sponsored enterprises (GSEs) | ​ | ​ | — | ​ | ​ | — | ​ | — | ​ | ​ | 42,194 | ​ | ​ | (7,143) | ​ | 13 | ​ | ​ | 42,194 | ​ | ​ | (7,143) | ​ | 13
Municipal securities | ​ |  | — | ​ |  | — | ​ | — | ​ |  | 46,500 | ​ |  | (6,178) | ​ | 35 | ​ |  | 46,500 | ​ |  | (6,178) | ​ | 35
Mortgage-backed securities (GSEs) | ​ |  | — | ​ |  | — | ​ | — | ​ |  | 25,258 | ​ |  | (3,895) | ​ | 5 | ​ |  | 25,258 | ​ |  | (3,895) | ​ | 5
Total | ​ | $ | — | ​ | $ | — | ​ | — | ​ | $ | 262,536 | ​ | $ | (18,698) | ​ | 57 | ​ | $ | 262,536 | ​ | $ | (18,698) | ​ | 57
Schedule of Other Investments | The following is the amortized cost and carrying value of other investments (in thousands):
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31, | ​ | December 31,
​ |  | 2024 |  | 2023
Federal Reserve Bank stock | ​ | $ | 9,045 |  | $ | 9,526
Federal Home Loan Bank stock | ​ |  | 5,345 |  | ​ | 3,786
First National Bankers Bank stock | ​ |  | 350 |  | ​ | 350
Total | ​ | $ | 14,740 | ​ | $ | 13,662
​

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