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Other comprehensive income (loss) (Tables) | 9 Months Ended
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Sep. 30, 2024
Other comprehensive income (loss) |
Schedule of components of accumulated other comprehensive (loss) | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
(Dollars in thousands) |  | ​ | September 30, 2024 |  | ​ | December 31, 2023 |
Net unrealized loss on investment securities available for sale | ​ | $ | (38,784) | ​ | $ | (51,527) | ​
Income tax benefit | ​ |  | (8,482) | ​ |  | (11,270) | ​
Net of income taxes | ​ |  | (30,302) | ​ |  | (40,257) | ​
Benefit plan adjustments | ​ |  | (4,370) | ​ |  | (4,370) | ​
Income tax benefit | ​ |  | (956) | ​ |  | (956) | ​
Net of income taxes | ​ |  | (3,414) | ​ |  | (3,414) | ​
Derivative adjustments | ​ |  | (1,056) | ​ |  | (871) | ​
Income tax benefit | ​ |  | (231) | ​ |  | (191) | ​
Net of income taxes | ​ |  | (825) | ​ |  | (680) | ​
Accumulated other comprehensive loss | ​ | $ | (34,541) | ​ | $ | (44,351) | ​
​

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