Note 3 - Loans and Allowance for Credit Losses - Troubled Debt Restructurings (Details) $ in Thousands	12 Months Ended
Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Number of Contracts	3	7
Pre-Modification Carrying Value	$ 3,026	$ 8,608
Period-End Carrying Value	1,965	6,221
Period-End Individual Impairment Allowance	$ 0	$ 0
Commercial Real Estate Portfolio Segment [Member]
Number of Contracts	2	6
Pre-Modification Carrying Value	$ 2,785	$ 8,367
Period-End Carrying Value	1,793	6,040
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	172	181
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 http://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 http://asc.fasb.org/extlink&oid=121585226&loc=d3e18845-111554

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- References

No definition available.

+ Details

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