Note 5 - Loans - Troubled Debt Restructuring (Details) $ in Thousands	12 Months Ended
Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
No. of Contracts	15	5	5
Pre-Modification Outstanding Recorded Investment	$ 11,980	$ 2,153	$ 5,417
Post-Modification Outstanding Recorded Investment	11,946	2,153	5,417
Specific Reserve	427	0	0
Charge-offs	$ 0	$ 0	$ 0
Commercial Portfolio Segment [Member]
No. of Contracts	4	3	5
Pre-Modification Outstanding Recorded Investment	$ 6,115	$ 2,150	$ 5,417
Post-Modification Outstanding Recorded Investment	6,115	2,150	5,417
Specific Reserve	427	0	0
Charge-offs	$ 0	$ 0	$ 0
Commercial Mortgage Loans [Member]
No. of Contracts	3
Pre-Modification Outstanding Recorded Investment	$ 3,676
Post-Modification Outstanding Recorded Investment	3,669
Specific Reserve	0
Charge-offs	$ 0
Residential Mortgage and Equity Lines Portfolio Segment [Member]
No. of Contracts	8	2
Pre-Modification Outstanding Recorded Investment	$ 2,189	$ 3
Post-Modification Outstanding Recorded Investment	2,162	3
Specific Reserve	0	0
Charge-offs	$ 0	$ 0

Reflects the amount of the specific reserve related to a troubled debt restructuring.

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- Definition

Number of financing receivables that have been modified by troubled debt restructurings.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI https://asc.fasb.org/extlink&oid=123577603&loc=SL6953676-111524

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Amount, after troubled debt restructuring, of modified financing receivable.

+ References

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- Definition

Amount, before troubled debt restructuring, of financing receivable to be modified.

+ References

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- Definition

Reflects the amount of the write-down related to a troubled debt restructuring.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 40
-Section 50
-Paragraph 4
-URI https://asc.fasb.org/extlink&oid=121585226&loc=d3e18845-111554

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