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Note C - Loans and Allowance for Loan Losses - Loans Individually Evaluated for Impairment (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Allowance for Loan Losses Allocated | $ 807 | $ 98 | $ 94
Unpaid principal balance | 17,454 | 14,376 | 19,917
Recorded investment | 17,135 | 12,618 | 18,108
Average impaired loans | 15,153 | 11,067 | 15,958
Interest income recognized | 1,288 | 748 | 855
Cash basis interest recognized | 1,288 | 748 | 855
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate Owner Occupied [Member] |  |  |
Unpaid principal balance - with allowance recorded | 2,030 |  |
Recorded investment - with allowance recorded | 2,030 |  |
Allowance for Loan Losses Allocated | 385 |  |
Average impaired loans - with allowance recorded | 1,375 |  |
Interest income recognized - with allowance recorded | 197 |  |
Cash basis interest recognized - with allowance recorded | 197 |  |
Unpaid principal balance - with no allowance recorded | 1,778 | 2,527 | 3,427
Recorded investment - with no allowance recorded | 1,778 |  | 3,427
Average impaired loans - with no allowance recorded | 1,902 | 2,475 | 2,456
Interest income recognized - with no allowance recorded | 113 | 141 | 184
Cash basis interest recognized - with no allowance recorded | 113 | 141 | 184
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate Nonowner Occupied [Member] |  |  |
Unpaid principal balance - with allowance recorded |  | 362 | 372
Recorded investment - with allowance recorded |  | 362 | 372
Allowance for Loan Losses Allocated |  | 98 | 94
Average impaired loans - with allowance recorded |  | 367 | 378
Interest income recognized - with allowance recorded |  | 15 | 17
Cash basis interest recognized - with allowance recorded |  | 15 | 17
Unpaid principal balance - with no allowance recorded | 7,492 | 2,368 | 4,989
Recorded investment - with no allowance recorded | 7,492 | 946 | 3,534
Average impaired loans - with no allowance recorded | 6,160 | 1,912 | 3,521
Interest income recognized - with no allowance recorded | 477 | 57 | 81
Cash basis interest recognized - with no allowance recorded | 477 | 57 | 81
Commercial Real Estate Portfolio Segment [Member] | Construction Loans [Member] |  |  |
Unpaid principal balance - with no allowance recorded | 319 | 336 | 352
Recorded investment - with no allowance recorded |  |  |
Average impaired loans - with no allowance recorded |  |  |
Interest income recognized - with no allowance recorded | 20 | 20 | 19
Cash basis interest recognized - with no allowance recorded | 20 | 20 | 19
Commercial and Industrial Portfolio Segment [Member] |  |  |
Unpaid principal balance - with allowance recorded | 4,861 |  |
Recorded investment - with allowance recorded | 4,861 |  |
Allowance for Loan Losses Allocated | 303 |  |
Average impaired loans - with allowance recorded | 4,796 |  |
Interest income recognized - with allowance recorded | 319 |  |
Cash basis interest recognized - with allowance recorded | 319 |  |
Unpaid principal balance - with no allowance recorded | 49 | 7,116 | 9,154
Recorded investment - with no allowance recorded | 49 |  | 9,154
Average impaired loans - with no allowance recorded | 300 | 5,802 | 8,544
Interest income recognized - with no allowance recorded | 111 | 414 | 481
Cash basis interest recognized - with no allowance recorded | 111 | 414 | 481
Residential Portfolio Segment [Member] |  |  |
Unpaid principal balance - with no allowance recorded | 438 | 1,667 | 1,420
Recorded investment - with no allowance recorded | 438 |  | 1,420
Average impaired loans - with no allowance recorded | 453 | 511 | 851
Interest income recognized - with no allowance recorded | 23 | 101 | 66
Cash basis interest recognized - with no allowance recorded | 23 | $ 101 | 66
Consumer Portfolio Segment [Member] | Automobile Loan [Member] |  |  |
Unpaid principal balance - with allowance recorded | 8 |  |
Recorded investment - with allowance recorded | 8 |  |
Allowance for Loan Losses Allocated | 8 |  |
Average impaired loans - with allowance recorded | 2 |  |
Interest income recognized - with allowance recorded |  |  |
Cash basis interest recognized - with allowance recorded |  |  |
Consumer Portfolio Segment [Member] | Other Consumer Loans [Member] |  |  |
Unpaid principal balance - with allowance recorded | 111 |  |
Recorded investment - with allowance recorded | 111 |  |
Allowance for Loan Losses Allocated | 111 |  |
Average impaired loans - with allowance recorded | 22 |  |
Interest income recognized - with allowance recorded | 9 |  |
Cash basis interest recognized - with allowance recorded | 9 |  |
Consumer Portfolio Segment [Member] | Home Equity Loan [Member] |  |  |
Unpaid principal balance - with no allowance recorded | 368 |  | 203
Recorded investment - with no allowance recorded | 368 |  | 201
Average impaired loans - with no allowance recorded | 143 |  | 208
Interest income recognized - with no allowance recorded | 19 |  | 7
Cash basis interest recognized - with no allowance recorded | $ 19 |  | $ 7

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