Note 4 - Loans, Allowance for Loan Losses/Credit Losses and Other Real Estate Owned - Impaired Loans (Details) $ in Thousands	Dec. 31, 2019 USD ($)
Impaired loans with no related allowance recorded, recorded investment	$ 7,662
Impaired loans with no related allowance recorded, unpaid principal balance	9,140
Impaired loans with an allowance recorded, recorded investment	8,160
Impaired loans with an allowance recorded, unpaid principal balance	8,160
Impaired loans with an allowance recorded, related allowance	2,413
Total impaired loans, recorded investment	15,822
Total impaired loans, unpaid principal balance	17,300
Commercial Portfolio Segment [Member]
Impaired loans with no related allowance recorded, recorded investment	21
Impaired loans with no related allowance recorded, unpaid principal balance	21
Impaired loans with an allowance recorded, recorded investment	8,160
Impaired loans with an allowance recorded, unpaid principal balance	8,160
Impaired loans with an allowance recorded, related allowance	2,413
Commercial Real Estate Portfolio Segment [Member]
Impaired loans with no related allowance recorded, recorded investment	7,408
Impaired loans with no related allowance recorded, unpaid principal balance	8,856
Residential Portfolio Segment [Member]
Impaired loans with no related allowance recorded, recorded investment	190
Impaired loans with no related allowance recorded, unpaid principal balance	220
Consumer Portfolio Segment [Member]
Impaired loans with no related allowance recorded, recorded investment	43
Impaired loans with no related allowance recorded, unpaid principal balance	$ 43

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

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 14A
-Subparagraph (b)
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Amount of allowance for credit losses related to recorded investment.

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
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-Name Accounting Standards Codification
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