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Loans, net and allowance for credit losses - Changes in Allowance for Loan Losses Account by Major Classification of Loans (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Allowance for loan losses:
Beginning Balance	$ 41,776	$ 21,895
Charge-offs	(1,233)	(108)
Recoveries	311	102
(Credits) provisions	200	708
Ending balance	41,054	22,597
Commercial
Allowance for loan losses:
Beginning Balance	6,004	2,272
Charge-offs	(157)	(5)
Recoveries	13	55
(Credits) provisions	562	(35)
Ending balance	6,422	2,287
Municipal
Allowance for loan losses:
Beginning Balance	1,072	788
(Credits) provisions	177	(90)
Ending balance	1,249	698
Commercial real estate
Allowance for loan losses:
Beginning Balance	21,804	14,153
(Credits) provisions	(943)	317
Ending balance	20,861	14,470
Residential real estate
Allowance for loan losses:
Beginning Balance	4,924	3,782
Charge-offs	(92)
Recoveries	1	2
(Credits) provisions	236	474
Ending balance	5,069	4,258
Consumer
Allowance for loan losses:
Beginning Balance	2,540	900
Charge-offs	(387)	(103)
Recoveries	173	45
(Credits) provisions	(45)	42
Ending balance	2,281	$ 884
Equipment Financing
Allowance for loan losses:
Beginning Balance	5,432
Charge-offs	(597)
Recoveries	124
(Credits) provisions	213
Ending balance	$ 5,172

X

- Definition

Amount excluding accrued interest, of allowance for credit loss on financing receivable. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479344/326-20-45-1

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- Definition

Amount, excluding accrued interest, of increase in allowance for credit loss on financing receivable from recovery. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (e)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-13

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- Definition

Amount, excluding accrued interest, of decrease in allowance for credit loss on financing receivable from writeoff. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-6

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-13

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- Definition

Amount, excluding accrued interest, of credit loss expense (reversal of expense) on financing receivable. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-13

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