Other comprehensive income (loss) (Activity in Accumulated Other Comprehensive Income) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
AOCI Attributable to Parent, Net of Tax [Roll Forward]
BALANCE	$ 466,796	$ 443,399	$ 459,886	$ 432,452
BALANCE	472,465	444,847	472,465	444,847
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-sale, Parent [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
BALANCE	(26,122)	(27,478)	(23,818)	(33,616)
Other comprehensive income (loss)	1,482	(5,654)	(822)	484
Net other comprehensive income (loss) during period	1,482	(5,654)	(822)	484
BALANCE	(24,640)	(33,132)	(24,640)	(33,132)
AOCI, Available-for-Sale Securities Transfer to Held-to-Maturity [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
BALANCE	(606)	(712)	(632)	(742)
Reclassification of amounts included in net income	24	28	50	58
Net other comprehensive income (loss) during period	24	28	50	58
BALANCE	(582)	(684)	(582)	(684)
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
BALANCE	(691)	(430)	(1,060)	(966)
Other comprehensive income (loss)	68	(837)	466	(306)
Reclassification of amounts included in net income	(38)	66	(67)	71
Net other comprehensive income (loss) during period	30	(771)	399	(235)
BALANCE	(661)	(1,201)	(661)	(1,201)
AOCI Attributable to Parent [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
BALANCE	(27,425)	(28,620)	(25,907)	(35,324)
Other comprehensive income (loss)	1,536	(6,491)	(58)	178
Reclassification of amounts included in net income	91	94	167	129
Net other comprehensive income (loss) during period	1,627	(6,397)	109	307
BALANCE	(25,798)	$ (35,017)	(25,798)	$ (35,017)
AOCI, Derivative Qualifying as Hedge, Excluded Component, Parent [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
BALANCE	(6)		(397)
Other comprehensive income (loss)	(14)		298
Reclassification of amounts included in net income	105		184
Net other comprehensive income (loss) during period	91		482
BALANCE	$ 85		$ 85