Note 4 - Loans - Impaired Loans (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Recorded investment with no related allowance recorded	$ 10,144	$ 9,111
Unpaid principal balance with no related allowance recorded	12,273	11,053
Recorded investment with related allowance recorded	982	1,288
Unpaid principal balance with related allowance recorded	983	1,289
Related allowance	270	324
Recorded investment	11,126	10,399
Unpaid principle balance	13,256	12,342
Commercial Portfolio Segment [Member]
Recorded investment with no related allowance recorded	52	94
Unpaid principal balance with no related allowance recorded	215	251
Recorded investment with related allowance recorded	547	562
Unpaid principal balance with related allowance recorded	547	563
Related allowance	137	159
Recorded investment	599	656
Unpaid principle balance	762	814
Commercial Real Estate Portfolio Segment [Member]
Related allowance	0	0
Recorded investment	4,709	3,103
Unpaid principle balance	4,854	3,103
Commercial Real Estate Portfolio Segment [Member] \| Commercial Non-owner Occupied [Member]
Recorded investment with no related allowance recorded	1,062	3,103
Unpaid principal balance with no related allowance recorded	1,097	3,103
Commercial Real Estate Portfolio Segment [Member] \| Commercial Owner Occupied Loan [Member]
Recorded investment with no related allowance recorded	3,647
Unpaid principal balance with no related allowance recorded	3,757
Residential Portfolio Segment [Member]
Related allowance	123	154
Recorded investment	5,781	6,600
Unpaid principle balance	7,602	8,385
Residential Portfolio Segment [Member] \| Real Estate Loan [Member] \| Individual Tax Identification Number Loan [Member]
Recorded investment with no related allowance recorded	5,203	5,723
Unpaid principal balance with no related allowance recorded	6,896	7,386
Recorded investment with related allowance recorded	177	455
Unpaid principal balance with related allowance recorded	177	455
Related allowance	13	38
Residential Portfolio Segment [Member] \| Real Estate Loan [Member] \| Mortgage Receivable [Member]
Recorded investment with no related allowance recorded	180	191
Unpaid principal balance with no related allowance recorded	308	313
Residential Portfolio Segment [Member] \| Home Equity Loan [Member]
Recorded investment with no related allowance recorded		231
Unpaid principal balance with no related allowance recorded		231
Recorded investment with related allowance recorded	221
Unpaid principal balance with related allowance recorded	221
Related allowance	110
Consumer Portfolio Segment [Member]
Recorded investment with related allowance recorded	37	40
Unpaid principal balance with related allowance recorded	38	40
Related allowance	10	11
Recorded investment	37	40
Unpaid principle balance	$ 38	$ 40

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

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-Name Accounting Standards Codification
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