Other comprehensive income (loss) (Activity in Accumulated Other Comprehensive Income) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
AOCI Attributable to Parent, Net of Tax [Roll Forward]
BALANCE	$ 432,452	$ 429,430
BALANCE	443,399	420,042
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-sale, Parent [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
BALANCE	(33,616)	25
Other comprehensive income (loss)	6,138	(15,092)
Net other comprehensive income (loss) during period	6,138	(15,092)
BALANCE	(27,478)	(15,067)
AOCI, Available-for-Sale Securities Transfer to Held-to-Maturity [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
BALANCE	(742)	665
Other comprehensive income (loss)		(1,490)
Reclassification of amounts included in net income	30	(8)
Net other comprehensive income (loss) during period	30	(1,498)
BALANCE	(712)	(833)
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
BALANCE	(966)
Other comprehensive income (loss)	536
Net other comprehensive income (loss) during period	536
BALANCE	(430)
AOCI Attributable to Parent [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
BALANCE	(35,324)	1,443
Other comprehensive income (loss)	6,674	(16,991)
Reclassification of amounts included in net income	30	(8)
Net other comprehensive income (loss) during period	6,704	(16,999)
BALANCE	$ (28,620)	(15,556)
AOCI, Derivative Qualifying as Hedge, Excluded Component, Parent [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
BALANCE		753
Other comprehensive income (loss)		(409)
Net other comprehensive income (loss) during period		(409)
BALANCE		$ 344