Loans and Allowance for Loan Losses - Summary of charge-offs (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2023	Mar. 31, 2022
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Write-off, by Origination Year [Abstract]
Current period gross charge-off, 2023	$ (16)
Current period gross charge-off, 2022	(2)
Current period gross charge-off, 2019	(162)
Current period gross charge-off, Prior	(77)
Current period gross charge-off, Total	(257)	$ (45)
Commercial
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Write-off, by Origination Year [Abstract]
Current period gross charge-off, 2023	(16)
Current period gross charge-off, 2019	(159)
Current period gross charge-off, Total	(175)	(27)
Commercial \| Commercial and industrial
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Write-off, by Origination Year [Abstract]
Current period gross charge-off, 2023	(16)
Current period gross charge-off, 2019	(159)
Current period gross charge-off, Total	(175)	(27)
Consumer
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Write-off, by Origination Year [Abstract]
Current period gross charge-off, 2022	(2)
Current period gross charge-off, 2019	(3)
Current period gross charge-off, Prior	(77)
Current period gross charge-off, Total	(82)	(18)
Consumer \| Other revolving and installment
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Write-off, by Origination Year [Abstract]
Current period gross charge-off, 2022	(2)
Current period gross charge-off, 2019	(3)
Current period gross charge-off, Total	(5)	$ (18)
Consumer \| Real estate junior lien \| Residential
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Write-off, by Origination Year [Abstract]
Current period gross charge-off, Prior	(77)
Current period gross charge-off, Total	$ (77)

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- Definition

Amount, excluding accrued interest, of write off of financing receivable originated more than five years before current fiscal year. Excludes net investment in lease.

+ References

No definition available.

+ Details

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- Definition

Amount, excluding accrued interest, of write off of financing receivable originated four years before current fiscal year. Excludes net investment in lease.

+ References

No definition available.

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- Definition

Amount, excluding accrued interest, of write off of financing receivable originated in current fiscal year. Excludes net investment in lease.

+ References

No definition available.

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- Definition

Amount, excluding accrued interest, of write off of financing receivable originated in fiscal year before current fiscal year. Excludes net investment in lease.

+ References

No definition available.

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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
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 13
-Subparagraph (d)
-URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447

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