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Note 4 - Loans Receivable - Individually Evaluated Impaired Loans (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019
Impaired Financing Receivable, Related Allowance | $ 1,800,000 | $ 166,000
Total, recorded investment | 11,800,000 | 7,200,000
Total, related allowance | 1,800,000 | 166,000
Residential Portfolio Segment [Member] |  |
With no related allowance recorded, recorded investment | 1,895,000 | 2,140,000
With no related allowance recorded, unpaid principal balance | 3,228,000 | 3,555,000
With no related allowance recorded, average recorded investment | 2,028,000 | 1,960,000
With no related allowance recorded, interest income recognized | 115,000 | 85,000
With an allowance recorded, recorded investment | 270,000 | 83,000
With an allowance recorded, unpaid principal balance | 314,000 | 83,000
Impaired Financing Receivable, Related Allowance | 173,000 | 10,000
With an allowance recorded, average recorded investment | 174,000 | 143,000
With an allowance recorded, interest income recognized | 6,000 | 3,000
Total, recorded investment | 2,165,000 | 2,223,000
Total, unpaid principal balance | 3,542,000 | 3,638,000
Total, average recorded investment | 2,202,000 | 2,103,000
Total, interest income recognized | 121,000 | 88,000
Total, related allowance | 173,000 | 10,000
Home Equity Portfolio Segment [Member] |  |
With no related allowance recorded, recorded investment | 352,000 | 429,000
With no related allowance recorded, unpaid principal balance | 363,000 | 451,000
With no related allowance recorded, average recorded investment | 373,000 | 380,000
With no related allowance recorded, interest income recognized | 16,000 | 10,000
With an allowance recorded, recorded investment | 1,000 | 8,000
With an allowance recorded, unpaid principal balance | 9,000 | 8,000
Impaired Financing Receivable, Related Allowance | 1,000 | 4,000
With an allowance recorded, average recorded investment | 5,000 | 50,000
With an allowance recorded, interest income recognized | 0 | 0
Total, recorded investment | 353,000 | 437,000
Total, unpaid principal balance | 372,000 | 459,000
Total, average recorded investment | 378,000 | 430,000
Total, interest income recognized | 16,000 | 10,000
Total, related allowance | 1,000 | 4,000
Commercial Real Estate Portfolio Segment [Member] |  |
With no related allowance recorded, recorded investment | 1,177,000 | 1,547,000
With no related allowance recorded, unpaid principal balance | 1,761,000 | 2,141,000
With no related allowance recorded, average recorded investment | 1,305,000 | 1,578,000
With no related allowance recorded, interest income recognized | 80,000 | 52,000
With an allowance recorded, recorded investment | 5,164,000 | 18,000
With an allowance recorded, unpaid principal balance | 5,164,000 | 18,000
Impaired Financing Receivable, Related Allowance | 1,089,000 | 0
With an allowance recorded, average recorded investment | 2,109,000 | 382,000
With an allowance recorded, interest income recognized | 16,000 | 0
Total, recorded investment | 6,341,000 | 1,565,000
Total, unpaid principal balance | 6,925,000 | 2,159,000
Total, average recorded investment | 3,414,000 | 1,960,000
Total, interest income recognized | 96,000 | 52,000
Total, related allowance | 1,089,000 | 0
Construction and Land Development Portfolio Segment [Member] |  |
With no related allowance recorded, recorded investment | 0 | 0
With no related allowance recorded, unpaid principal balance | 0 | 0
With no related allowance recorded, average recorded investment | 0 | 0
With no related allowance recorded, interest income recognized | 0 | 0
With an allowance recorded, recorded investment | 0 | 0
With an allowance recorded, unpaid principal balance | 0 | 0
Impaired Financing Receivable, Related Allowance | 0 | 0
With an allowance recorded, average recorded investment | 0 | 0
With an allowance recorded, interest income recognized | 0 | 0
Total, recorded investment | 0 | 0
Total, unpaid principal balance | 0 | 0
Total, average recorded investment | 0 | 0
Total, interest income recognized | 0 | 0
Total, related allowance | 0 | 0
Multifamily Portfolio Segment [Member] |  |
With no related allowance recorded, recorded investment | 716,000 | 802,000
With no related allowance recorded, unpaid principal balance | 798,000 | 884,000
With no related allowance recorded, average recorded investment | 763,000 | 581,000
With no related allowance recorded, interest income recognized | 42,000 | 20,000
With an allowance recorded, recorded investment | 0 | 0
With an allowance recorded, unpaid principal balance | 0 | 0
Impaired Financing Receivable, Related Allowance | 0 | 0
With an allowance recorded, average recorded investment | 0 | 0
With an allowance recorded, interest income recognized | 0 | 0
Total, recorded investment | 716,000 | 802,000
Total, unpaid principal balance | 798,000 | 884,000
Total, average recorded investment | 763,000 | 581,000
Total, interest income recognized | 42,000 | 20,000
Total, related allowance | 0 | 0
Farmland Portfolio Segment [Member] |  |
With no related allowance recorded, recorded investment | 0 | 0
With no related allowance recorded, unpaid principal balance | 0 | 0
With no related allowance recorded, average recorded investment |  | 0
With no related allowance recorded, interest income recognized | 0 | 0
With an allowance recorded, recorded investment | 0 | 0
With an allowance recorded, unpaid principal balance | 0 | 0
Impaired Financing Receivable, Related Allowance | 0 | 0
With an allowance recorded, average recorded investment |  | 0
With an allowance recorded, interest income recognized | 0 | 0
Total, recorded investment | 0 | 0
Total, unpaid principal balance | 0 | 0
Total, average recorded investment | 0 | 0
Total, interest income recognized | 0 | 0
Total, related allowance | 0 | 0
Commercial Portfolio Segment [Member] |  |
With no related allowance recorded, recorded investment | 1,497,000 | 1,814,000
With no related allowance recorded, unpaid principal balance | 1,514,000 | 1,906,000
With no related allowance recorded, average recorded investment | 1,591,000 | 1,909,000
With no related allowance recorded, interest income recognized | 80,000 | 81,000
With an allowance recorded, recorded investment | 749,000 | 377,000
With an allowance recorded, unpaid principal balance | 749,000 | 377,000
Impaired Financing Receivable, Related Allowance | 512,000 | 152,000
With an allowance recorded, average recorded investment | 739,000 | 513,000
With an allowance recorded, interest income recognized | 30,000 | 4,000
Total, recorded investment | 2,246,000 | 2,191,000
Total, unpaid principal balance | 2,263,000 | 2,283,000
Total, average recorded investment | 2,330,000 | 2,422,000
Total, interest income recognized | 110,000 | 85,000
Total, related allowance | 512,000 | 152,000
Consumer Portfolio Segment [Member] |  |
With no related allowance recorded, recorded investment | 0 | 0
With no related allowance recorded, unpaid principal balance | 0 | 0
With no related allowance recorded, average recorded investment | 0 | 0
With no related allowance recorded, interest income recognized | 0 | 0
With an allowance recorded, recorded investment | 0 | 0
With an allowance recorded, unpaid principal balance | 0 | 0
Impaired Financing Receivable, Related Allowance | 0 | 0
With an allowance recorded, average recorded investment | 0 | 0
With an allowance recorded, interest income recognized | 0 | 0
Total, recorded investment | 0 | 0
Total, unpaid principal balance | 0 | 0
Total, average recorded investment | 0 | 0
Total, interest income recognized | 0 | 0
Total, related allowance | 0 | 0
Manufactured Homes Portfolio Segment [Member] |  |
With no related allowance recorded, recorded investment | 0 | 0
With no related allowance recorded, unpaid principal balance | 0 | 0
With no related allowance recorded, average recorded investment | 0 | 0
With no related allowance recorded, interest income recognized | 0 | 0
With an allowance recorded, recorded investment | 0 | 0
With an allowance recorded, unpaid principal balance | 0 | 0
Impaired Financing Receivable, Related Allowance | 0 | 0
With an allowance recorded, average recorded investment | 0 | 0
With an allowance recorded, interest income recognized | 0 | 0
Total, recorded investment | 0 | 0
Total, unpaid principal balance | 0 | 0
Total, average recorded investment | 0 | 0
Total, interest income recognized | 0 | 0
Total, related allowance | 0 | 0
Government Portfolio Segment [Member] |  |
With no related allowance recorded, recorded investment | 0 | 0
With no related allowance recorded, unpaid principal balance | 0 | 0
With no related allowance recorded, average recorded investment | 0 | 0
With no related allowance recorded, interest income recognized | 0 | 0
With an allowance recorded, recorded investment | 0 | 0
With an allowance recorded, unpaid principal balance | 0 | 0
Impaired Financing Receivable, Related Allowance | 0 | 0
With an allowance recorded, average recorded investment | 0 | 0
With an allowance recorded, interest income recognized | 0 | 0
Total, recorded investment | 0 | 0
Total, unpaid principal balance | 0 | 0
Total, average recorded investment | 0 | 0
Total, interest income recognized | 0 | 0
Total, related allowance | $ 0 | $ 0

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