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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, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
AOCI Attributable to Parent, Net of Tax [Roll Forward]
BALANCE	$ 420,427	$ 373,393	$ 429,430	$ 357,168
BALANCE	414,711	424,720	414,711	424,720
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-sale, Parent [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
BALANCE	(23,526)	2,051	25	2,968
Other comprehensive income (loss)	(14,942)	210	(38,493)	(707)
Reclassification of amounts included in net income		(33)		(33)
Net other comprehensive income (loss) during period	(14,942)	177	(38,493)	(740)
BALANCE	(38,468)	2,228	(38,468)	2,228
AOCI, Available-for-Sale Securities Transfer to Held-to-Maturity [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
BALANCE	(804)		665
Other comprehensive income (loss)			(1,490)
Reclassification of amounts included in net income	31		52
Net other comprehensive income (loss) during period	31		(1,438)
BALANCE	(773)		(773)
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Other comprehensive income (loss)	(1,317)		(1,317)
Net other comprehensive income (loss) during period	(1,317)		(1,317)
BALANCE	(1,317)		(1,317)
AOCI Attributable to Parent [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
BALANCE	(24,648)	2,338	1,443	2,183
Other comprehensive income (loss)	(16,190)	254	(42,302)	409
Reclassification of amounts included in net income	31	(33)	52	(33)
Net other comprehensive income (loss) during period	(16,159)	221	(42,250)	376
BALANCE	(40,807)	2,559	(40,807)	2,559
AOCI, Derivative Qualifying as Hedge, Excluded Component, Parent [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
BALANCE	(318)	287	753	(785)
Other comprehensive income (loss)	69	44	(1,002)	1,116
Net other comprehensive income (loss) during period	69	44	(1,002)	1,116
BALANCE	$ (249)	$ 331	$ (249)	$ 331

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Amount after tax, before reclassification adjustments, of other comprehensive income (loss), attributable to parent.

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Amount after tax of other comprehensive income (loss) attributable to parent entity.

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Amount after tax of reclassification adjustments of other comprehensive income (loss) attributable to parent.

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Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity.

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