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Allowance for Loan Losses - Investment in impaired loans and related interest income (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Average loan balance:
Average investment in impaired loans	$ 2,112	$ 2,428	$ 2,131	$ 1,903
Interest income recognized:
Interest income recognized on a cash basis on impaired loans	0	1		13
Commercial | Commercial.
Average loan balance:
Average investment in impaired loans	2,107	2,420	2,126	1,895
Interest income recognized:
Interest income recognized on a cash basis on impaired loans	0	1		13
Commercial | Commercial loans secured by Non-Owner Occupied real estate
Average loan balance:
Average investment in impaired loans	5	8	5	8
Interest income recognized:
Interest income recognized on a cash basis on impaired loans	$ 0	$ 0	$ 0	$ 0

X

- Definition

Average amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (c)(1)
-URI https://asc.fasb.org/extlink&oid=123577603&loc=d3e5212-111524

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 17
-URI https://asc.fasb.org/extlink&oid=123577603&loc=d3e5258-111524

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of interest income recognized on a cash-basis method of accounting that the financing receivables (with related allowance for credit losses and without a related allowance for credit losses) were impaired.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (c)(3)
-URI https://asc.fasb.org/extlink&oid=123577603&loc=d3e5212-111524

+ Details

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Period Type:	duration

X

- References

No definition available.

+ Details

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- Details

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- Details

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