Note 4 - Loans, Allowance for Loan Losses and Other Real Estate Owned - Troubled Debt Restructurings (Details) $ in Thousands	3 Months Ended	12 Months Ended
Mar. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Number of Contracts	3	3
Pre-Modification Carrying Value	$ 3,026	$ 3,026
Period-End Carrying Value	1,952	1,965
Period-End Individual Impairment Allowance	$ 0	$ 0
Commercial Real Estate Portfolio Segment [Member]
Number of Contracts	2	2
Pre-Modification Carrying Value	$ 2,785	$ 2,785
Period-End Carrying Value	1,782	1,793
Period-End Individual Impairment Allowance	$ 0	$ 0
Residential Portfolio Segment [Member]
Number of Contracts	1	1
Pre-Modification Carrying Value	$ 241	$ 241
Period-End Carrying Value	170	172
Period-End Individual Impairment Allowance	$ 0	$ 0

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

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- Definition

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

+ References

+ Details

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- Definition

Amount of financing receivable modified as troubled debt restructuring.

+ 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

Reference 2: 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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- References

No definition available.

+ Details

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