Loans and Allowance for Loan Losses - Changes in allowance (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Changes in the allowance
Beginning Balance	$ 31,572	$ 34,246	$ 23,924
Provision for loan losses		(3,500)	10,900
Loan charge-offs	(1,549)	(1,922)	(5,368)
Loan recoveries	1,123	2,748	4,790
Ending Balance	31,146	31,572	34,246
Unallocated
Changes in the allowance
Beginning Balance	1,180	1,378	2,192
Provision for loan losses	(912)	(198)	(814)
Ending Balance	268	1,180	1,378
Commercial
Changes in the allowance
Beginning Balance	22,084	24,968	19,261
Provision for loan losses	1,933	(3,600)	6,372
Loan charge-offs	(1,396)	(1,766)	(5,114)
Loan recoveries	671	2,482	4,449
Ending Balance	23,292	22,084	24,968
Commercial \| Commercial and industrial
Changes in the allowance
Beginning Balance	8,925	10,205	12,270
Provision for loan losses	1,168	(1,710)	(2,168)
Loan charge-offs	(1,396)	(1,230)	(4,249)
Loan recoveries	461	1,660	4,352
Ending Balance	9,158	8,925	10,205
Commercial \| Real estate construction
Changes in the allowance
Beginning Balance	783	658	303
Provision for loan losses	587	125	355
Loan recoveries	76
Ending Balance	1,446	783	658
Commercial \| Commercial real estate
Changes in the allowance
Beginning Balance	12,376	14,105	6,688
Provision for loan losses	178	(2,015)	8,185
Loan charge-offs		(536)	(865)
Loan recoveries	134	822	97
Ending Balance	12,688	12,376	14,105
Consumer
Changes in the allowance
Beginning Balance	8,308	7,900	2,471
Provision for loan losses	(1,021)	298	5,342
Loan charge-offs	(153)	(156)	(254)
Loan recoveries	452	266	341
Ending Balance	7,586	8,308	7,900
Consumer \| Residential \| Real estate first mortgage
Changes in the allowance
Beginning Balance	6,532	5,774	1,448
Provision for loan losses	(763)	758	4,321
Loan recoveries			5
Ending Balance	5,769	6,532	5,774
Consumer \| Residential \| Real estate junior lien
Changes in the allowance
Beginning Balance	1,295	1,373	671
Provision for loan losses	(288)	(201)	507
Loan charge-offs			(12)
Loan recoveries	282	123	207
Ending Balance	1,289	1,295	1,373
Consumer \| Other revolving and installment
Changes in the allowance
Beginning Balance	481	753	352
Provision for loan losses	30	(259)	514
Loan charge-offs	(153)	(156)	(242)
Loan recoveries	170	143	129
Ending Balance	$ 528	$ 481	$ 753

Amount of increase in allowance for credit loss on accounts receivable, from recovery.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 13
-Subparagraph (e)
-URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447

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- Definition

Amount of loans and leases that have been written off from both loan receivables and allowance reserve for credit loss.

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- Definition

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

+ References

No definition available.

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- Definition

Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section S99
-Paragraph 4
-Subparagraph (SAB Topic 6.L.1)
-URI https://asc.fasb.org/extlink&oid=122038336&loc=d3e74567-122707

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (g)
-URI https://asc.fasb.org/extlink&oid=123577603&loc=SL6953423-111524

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
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-Section 50
-Paragraph 2
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-URI https://asc.fasb.org/extlink&oid=121614798&loc=d3e15032-111544

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
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-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (c)(1)
-URI https://asc.fasb.org/extlink&oid=123577603&loc=SL6953423-111524

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- Definition

Amount of expense related loan transactions, lease transactions, credit loss from transactions other than loan and lease transactions, and other loss based on assessment of uncollectability from the counterparty to reduce the account to their net realizable value.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
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-URI https://asc.fasb.org/extlink&oid=123577603&loc=SL6953423-111524

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 220
-Section S99
-Paragraph 1
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-URI https://asc.fasb.org/extlink&oid=120399700&loc=SL114874048-224260

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