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Note 4 - Loans Receivables and Allowance for Loan and Lease Losses - Impaired Loans (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Impaired loans, related allowance | $ 2,300 | $ 1,400 |
Impaired loans, recorded investment | 23,800 | 24,400 |
With no allowance recorded, average recorded investment | 14,900 | 12,783 | $ 19,123
With no allowance recorded, interest income recognized | 182 | 193 | 279
With allowance recorded, average recorded investment | 11,642 | 8,934 | 3,572
With allowance recorded, interest income recognized | 220 | 42 | 415
Impaired Loans, Average recorded investment | 26,542 | 21,717 | 22,695
Impaired Loans, interest income recognized | 402 | 235 | 694
Business Activities Loans [Member] |  |  |
Impaired loans with no related allowance recorded, recorded investment | 10,820 | 15,453 |
Impaired loans with no related allowance recorded, unpaid principal balance | 11,820 | 16,692 |
Impaired loans with a related allowance recorded, recorded investment | 12,982 | 8,930 |
Impaired loans with a related allowance recorded, unpaid principal balance | 13,416 | 8,930 |
Impaired loans, related allowance | 2,299 | 1,412 |
Impaired loans, recorded investment | 23,802 | 24,383 |
Impaired loans, unpaid principal balance | 25,236 | 25,622 |
Commercial Real Estate Portfolio Segment [Member] |  |  |
With no allowance recorded, average recorded investment | 7,636 | 5,859 | 9,829
With no allowance recorded, interest income recognized | 103 | 39 | 95
With allowance recorded, average recorded investment | 8,869 | 8,861 | 888
With allowance recorded, interest income recognized | 66 | 35 | 415
Impaired Loans, Average recorded investment | 16,505 | 14,720 | 10,717
Impaired Loans, interest income recognized | 169 | 74 | 510
Commercial Real Estate Portfolio Segment [Member] | Business Activities Loans [Member] |  |  |
Impaired loans with no related allowance recorded, recorded investment | 6,820 | 5,723 |
Impaired loans with no related allowance recorded, unpaid principal balance | 7,776 | 6,644 |
Impaired loans with a related allowance recorded, recorded investment | 8,884 | 8,811 |
Impaired loans with a related allowance recorded, unpaid principal balance | 8,811 | 8,811 |
Impaired loans, related allowance | 1,567 | 1,398 |
Impaired loans, recorded investment | 15,704 | 14,534 |
Impaired loans, unpaid principal balance | 16,587 | 15,455 |
Residential Portfolio Segment [Member] |  |  |
With no allowance recorded, average recorded investment | 4,014 | 3,681 | 2,531
With no allowance recorded, interest income recognized | 51 | 28 | 104
With allowance recorded, average recorded investment | 428 | 34 | 952
With allowance recorded, interest income recognized | 21 | 7 | 0
Impaired Loans, Average recorded investment | 4,442 | 3,715 | 3,483
Impaired Loans, interest income recognized | 72 | 35 | 104
Residential Portfolio Segment [Member] | Business Activities Loans [Member] |  |  |
Impaired loans with no related allowance recorded, recorded investment | 2,847 | 3,853 |
Impaired loans with no related allowance recorded, unpaid principal balance | 2,763 | 3,900 |
Impaired loans with a related allowance recorded, recorded investment | 461 | 109 |
Impaired loans with a related allowance recorded, unpaid principal balance | 488 | 109 |
Impaired loans, related allowance | 8 | 4 |
Impaired loans, recorded investment | 3,308 | 3,962 |
Impaired loans, unpaid principal balance | 3,251 | 4,009 |
Commercial Portfolio Segment [Member] |  |  |
With no allowance recorded, average recorded investment | 2,548 | 2,111 | 1,800
With no allowance recorded, interest income recognized | 12 | 79 | 45
With allowance recorded, average recorded investment | 2,239 | 0 | 1,714
With allowance recorded, interest income recognized | 126 | 0 | 0
Impaired Loans, Average recorded investment | 4,787 | 2,111 | 3,514
Impaired Loans, interest income recognized | 138 | 79 | 45
Commercial Portfolio Segment [Member] | Business Activities Loans [Member] |  |  |
Impaired loans with no related allowance recorded, recorded investment | 630 | 4,700 |
Impaired loans with no related allowance recorded, unpaid principal balance | 758 | 4,816 |
Impaired loans with a related allowance recorded, recorded investment | 3,471 | 0 |
Impaired loans with a related allowance recorded, unpaid principal balance | 3,916 | 0 |
Impaired loans, related allowance | 723 | 0 |
Impaired loans, recorded investment | 4,101 | 4,700 |
Impaired loans, unpaid principal balance | 4,674 | 4,816 |
Consumer Portfolio Segment [Member] |  |  |
With no allowance recorded, average recorded investment | 702 | 1,132 | 901
With no allowance recorded, interest income recognized | 16 | 47 | 35
With allowance recorded, average recorded investment | 106 | 39 | 18
With allowance recorded, interest income recognized | 7 | 0 | 0
Impaired Loans, Average recorded investment | 808 | 1,171 | 919
Impaired Loans, interest income recognized | 23 | 47 | 35
Consumer Portfolio Segment [Member] | Business Activities Loans [Member] |  |  |
Impaired loans with no related allowance recorded, recorded investment | 523 | 1,177 |
Impaired loans with no related allowance recorded, unpaid principal balance | 523 | 1,332 |
Impaired loans with a related allowance recorded, recorded investment | 166 | 10 |
Impaired loans with a related allowance recorded, unpaid principal balance | 201 | 10 |
Impaired loans, related allowance | 1 | 10 |
Impaired loans, recorded investment | 689 | 1,187 |
Impaired loans, unpaid principal balance | 724 | 1,342 |
Construction Portfolio Segment [Member] |  |  |
With no allowance recorded, average recorded investment | 0 | 0 | 4,062
With no allowance recorded, interest income recognized | 0 | 0 | 0
Impaired Loans, Average recorded investment | 0 | 0 | 4,062
Impaired Loans, interest income recognized | $ 0 | $ 0 | $ 0

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