Other comprehensive income (loss) (Activity in Accumulated Other Comprehensive Income) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
AOCI Attributable to Parent, Net of Tax [Roll Forward]
BALANCE	$ 459,886	$ 432,452
BALANCE	466,796	443,399
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-sale, Parent [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
BALANCE	(23,818)	(33,616)
Other comprehensive income (loss)	(2,304)	6,138
Net other comprehensive income (loss) during period	(2,304)	6,138
BALANCE	(26,122)	(27,478)
AOCI, Available-for-Sale Securities Transfer to Held-to-Maturity [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
BALANCE	(632)	(742)
Reclassification of amounts included in net income	26	30
Net other comprehensive income (loss) during period	26	30
BALANCE	(606)	(712)
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
BALANCE	(1,060)	(966)
Other comprehensive income (loss)	341	536
Reclassification of amounts included in net income	28
Net other comprehensive income (loss) during period	369	536
BALANCE	(691)	(430)
AOCI Attributable to Parent [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
BALANCE	(25,907)	(35,324)
Other comprehensive income (loss)	(1,651)	6,674
Reclassification of amounts included in net income	133	30
Net other comprehensive income (loss) during period	(1,518)	6,704
BALANCE	(27,425)	$ (28,620)
AOCI, Derivative Qualifying as Hedge, Excluded Component, Parent [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
BALANCE	(397)
Other comprehensive income (loss)	312
Reclassification of amounts included in net income	79
Net other comprehensive income (loss) during period	391
BALANCE	$ (6)