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Investment Securities (Tables) | 12 Months Ended
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Dec. 31, 2024
Investment Securities |
Schedule of summary of investment securities | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | At December 31, 2024
​ | ​ | ​ | ​ |  | Gross |  | Gross |  | ​ | ​
​ | ​ | Amortized | ​ | Unrealized | ​ | Unrealized | ​ | Fair
(dollars in thousands) | ​ | Cost | ​ | Gains | ​ | Losses | ​ | Value
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Collateralized mortgage obligations | ​ | $ | 14,439 | ​ | $ | 21 | ​ | $ | (2,402) | ​ | $ | 12,058
Agency mortgage-backed securities | ​ |  | 44,252 | ​ |  | — | ​ |  | (5,651) | ​ |  | 38,601
Municipal securities | ​ | ​ | 42,607 | ​ | ​ | 5 | ​ | ​ | (10,201) | ​ | ​ | 32,411
U.S. Government agency securities | ​ | ​ | 31,368 | ​ | ​ | — | ​ | ​ | (7,830) | ​ | ​ | 23,538
Corporate securities | ​ | ​ | 1,500 | ​ | ​ | — | ​ | ​ | (159) | ​ | ​ | 1,341
U.S. Treasury securities | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | —
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Total securities available for sale | ​ | $ | 134,166 | ​ | $ | 26 | ​ | $ | (26,243) | ​ | $ | 107,949
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | At December 31, 2023
​ | ​ | ​ | ​ |  | Gross |  | Gross |  | ​ | ​
​ | ​ | Amortized | ​ | Unrealized | ​ | Unrealized | ​ | Fair
(dollars in thousands) | ​ | Cost | ​ | Gains | ​ | Losses | ​ | Value
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Collateralized mortgage obligations | ​ | $ | 15,962 | ​ | $ | 8 | ​ | $ | (2,309) | ​ | $ | 13,661
Agency mortgage-backed securities | ​ |  | 51,930 | ​ |  | — | ​ |  | (5,816) | ​ |  | 46,114
Municipal securities | ​ | ​ | 42,990 | ​ | ​ | 4 | ​ | ​ | (9,265) | ​ | ​ | 33,729
U.S. Government agency securities | ​ | ​ | 45,406 | ​ | ​ | — | ​ | ​ | (7,712) | ​ | ​ | 37,694
Corporate securities | ​ | ​ | 1,500 | ​ | ​ | — | ​ | ​ | (216) | ​ | ​ | 1,284
U.S. Treasury securities | ​ |  | 6,999 | ​ |  | — | ​ |  | (54) | ​ |  | 6,945
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Total securities available for sale | ​ | $ | 164,787 | ​ | $ | 12 | ​ | $ | (25,372) | ​ | $ | 139,427
​
Schedule of gross unrealized losses and fair value, aggregated by investment category and length of time in continuous unrealized loss position | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | At December 31, 2024
​ | ​ | Less than 12 months | ​ | 12 months or more | ​ | Total
​ |  | Fair |  | Unrealized |  | Fair |  | Unrealized |  | Fair |  | Unrealized
(dollars in thousands) | ​ | Value | ​ | Loss | ​ | Value | ​ | Loss | ​ | Value | ​ | Loss
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Collateralized mortgage obligations | ​ | $ | 118 | ​ | $ | — | ​ | $ | 9,456 | ​ | $ | (2,402) | ​ | $ | 9,574 | ​ | $ | (2,402)
Agency mortgage-backed securities | ​ | ​ | 66 | ​ | ​ | (1) | ​ | ​ | 38,535 | ​ | ​ | (5,650) | ​ | ​ | 38,601 | ​ | ​ | (5,651)
Municipal securities | ​ | ​ | 1,615 | ​ | ​ | (20) | ​ | ​ | 30,291 | ​ | ​ | (10,181) | ​ | ​ | 31,906 | ​ | ​ | (10,201)
U.S. Government agency securities | ​ |  | — | ​ | ​ | ​ | ​ | ​ | 23,538 | ​ | ​ | (7,830) | ​ | ​ | 23,538 | ​ | ​ | (7,830)
Corporate securities | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 1,341 | ​ | ​ | (159) | ​ | ​ | 1,341 | ​ | ​ | (159)
U.S. Treasury securities | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | —
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | $ | 1,799 | ​ | $ | (21) | ​ | $ | 103,161 | ​ | $ | (26,222) | ​ | $ | 104,960 | ​ | $ | (26,243)
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | At December 31, 2023
​ | ​ | Less than 12 months | ​ | 12 months or more | ​ | Total
​ |  | Fair |  | Unrealized |  | Fair |  | Unrealized |  | Fair |  | Unrealized
(dollars in thousands) | ​ | Value | ​ | Loss | ​ | Value | ​ | Loss | ​ | Value | ​ | Loss
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Collateralized mortgage obligations | ​ | $ | 492 | ​ | $ | (1) | ​ | $ | 11,927 | ​ | $ | (2,308) | ​ | $ | 12,419 | ​ | $ | (2,309)
Agency mortgage-backed securities | ​ | ​ | 5 | ​ | ​ | — | ​ | ​ | 46,109 | ​ | ​ | (5,816) | ​ | ​ | 46,114 | ​ | ​ | (5,816)
Municipal securities | ​ | ​ | 2,978 | ​ | ​ | (39) | ​ | ​ | 28,667 | ​ | ​ | (9,226) | ​ | ​ | 31,645 | ​ | ​ | (9,265)
U.S. Government agency securities | ​ |  | 220 | ​ | ​ | (1) | ​ | ​ | 37,474 | ​ | ​ | (7,711) | ​ | ​ | 37,694 | ​ | ​ | (7,712)
Corporate securities | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 1,284 | ​ | ​ | (216) | ​ | ​ | 1,284 | ​ | ​ | (216)
U.S. Treasury securities | ​ |  | — | ​ |  | — | ​ |  | 6,944 | ​ |  | (54) | ​ |  | 6,944 | ​ |  | (54)
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | $ | 3,695 | ​ | $ | (41) | ​ | $ | 132,405 | ​ | $ | (25,331) | ​ | $ | 136,100 | ​ | $ | (25,372)
Schedule of contractual maturities of investment securities | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | At December 31, 2024
​ | ​ | Amortized | ​ | Fair
(dollars in thousands) |  | Cost |  | Value
​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
Due within one year | ​ | $ | 1,003 | ​ | $ | 1,002
Due over one to five years | ​ |  | 4,012 | ​ |  | 3,640
Due over five to ten years | ​ |  | 16,288 | ​ |  | 13,790
Due over ten years | ​ |  | 54,172 | ​ |  | 38,858
Collateralized mortgage obligations | ​ | ​ | 14,439 | ​ | ​ | 12,058
Agency mortgage-backed securities | ​ |  | 44,252 | ​ |  | 38,601
​ | ​ | ​ | ​ | ​ | ​ | ​
Total securities available for sale | ​ | $ | 134,166 | ​ | $ | 107,949
​

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