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Other comprehensive income (loss) (Activity in Accumulated Other Comprehensive Income) (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |  |  |
BALANCE | $ 472,465 | $ 444,847 | $ 459,886 | $ 432,452
BALANCE | 489,023 | 446,652 | 489,023 | 446,652
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-sale, Parent [Member] |  |  |  |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |  |  |
BALANCE | (24,640) | (33,132) | (23,818) | (33,616)
Other comprehensive income (loss) | 9,043 | (4,325) | 8,221 | (3,841)
Reclassification of amounts included in net income |  | 5,044 |  | 5,044
Net other comprehensive income (loss) during period | 9,043 | 719 | 8,221 | 1,203
BALANCE | (15,597) | (32,413) | (15,597) | (32,413)
AOCI, Available-for-Sale Securities Transfer to Held-to-Maturity [Member] |  |  |  |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |  |  |
BALANCE | (582) | (684) | (632) | (742)
Reclassification of amounts included in net income | 25 | 27 | 75 | 85
Net other comprehensive income (loss) during period | 25 | 27 | 75 | 85
BALANCE | (557) | (657) | (557) | (657)
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member] |  |  |  |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |  |  |
BALANCE | (661) | (1,201) | (1,060) | (966)
Other comprehensive income (loss) | 190 | 115 | 657 | (120)
Reclassification of amounts included in net income | (16) |  | (84) |
Net other comprehensive income (loss) during period | 174 | 115 | 573 | (120)
BALANCE | (487) | (1,086) | (487) | (1,086)
AOCI Attributable to Parent [Member] |  |  |  |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |  |  |
BALANCE | (25,798) | (35,017) | (25,907) | (35,324)
Other comprehensive income (loss) | 8,544 | (4,210) | 8,856 | (3,961)
Reclassification of amounts included in net income | (95) | 5,071 | (298) | 5,129
Net other comprehensive income (loss) during period | 8,449 | 861 | 8,558 | 1,168
BALANCE | (17,349) | $ (34,156) | (17,349) | $ (34,156)
AOCI, Derivative Qualifying as Hedge, Excluded Component, Parent [Member] |  |  |  |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |  |  |
BALANCE | 85 |  | (397) |
Other comprehensive income (loss) | (689) |  | (22) |
Reclassification of amounts included in net income | (104) |  | (289) |
Net other comprehensive income (loss) during period | (793) |  | (311) |
BALANCE | $ (708) |  | $ (708) |

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