Note 4 - Loans - Troubled Debt Restructuring (Details) $ in Thousands	12 Months Ended
Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)
No. of Contracts	5	5	24
Pre-Modification Outstanding Recorded Investment	$ 2,153	$ 5,417	$ 25,979
Post-Modification Outstanding Recorded Investment	2,153	5,417	21,916
Specific Reserve	0	0	2,190
Charge-offs	$ 0	$ 0	$ 4,063
Commercial Portfolio Segment [Member]
No. of Contracts	3	5	23
Pre-Modification Outstanding Recorded Investment	$ 2,150	$ 5,417	$ 25,937
Post-Modification Outstanding Recorded Investment	2,150	5,417	21,874
Specific Reserve	0	0	2,190
Charge-offs	$ 0	$ 0	$ 4,063
Residential Mortgage and Equity Lines Portfolio Segment [Member]
No. of Contracts	2		1
Pre-Modification Outstanding Recorded Investment	$ 3		$ 42
Post-Modification Outstanding Recorded Investment	3		42
Specific Reserve	0		0
Charge-offs	$ 0		$ 0

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

No definition available.

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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 http://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 http://asc.fasb.org/extlink&oid=121585226&loc=d3e18845-111554

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