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Note 3 - Loans and Allowance for Loan Losses - Impaired Loans by Loan Category (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Recorded Investment with no related allowance recorded | $ 550 | $ 572 | $ 3,958
Unpaid Principal Balance with no related allowance recorded | 595 | 694 | 4,969
Average Recorded Investment with no related allowance recorded | 518 | 2,555 | 2,404
Interest Income Recognized with no related allowance recorded | 1 | 5 | 19
Recorded Investment with an allowance recorded | 2,296 | 4,861 | 3,893
Unpaid Principal Balance with an allowance recorded | 2,330 | 4,943 | 3,986
Related Allowance | 153 | 503 | 431
Average Recorded Investment with an allowance recorded | 3,191 | 4,736 | 3,506
Interest Income Recognized with an allowance recorded | 122 | 218 | 134
Recorded Investment | 2,846 | 5,433 | 7,851
Unpaid Principal Balance | 2,925 | 5,637 | 8,955
Average Recorded Investment | 3,709 | 7,291 | 5,910
Interest Income Recognized with an allowance recorded | 123 | 223 | 153
Agricultural [Member] |  |  |
Recorded Investment with no related allowance recorded | 0 | 314 | 348
Unpaid Principal Balance with no related allowance recorded | 0 | 428 | 434
Average Recorded Investment with no related allowance recorded | 250 | 598 | 329
Interest Income Recognized with no related allowance recorded | 0 | 0 | 0
Recorded Investment with an allowance recorded | 23 | 2,302 | 0
Unpaid Principal Balance with an allowance recorded | 27 | 2,302 | 0
Related Allowance | 2 | 251 | 0
Average Recorded Investment with an allowance recorded | 913 | 1,873 | 152
Interest Income Recognized with an allowance recorded | 2 | 139 | 0
Recorded Investment | 23 | 2,616 | 348
Unpaid Principal Balance | 27 | 2,730 | 434
Average Recorded Investment | 1,163 | 2,471 | 481
Interest Income Recognized with an allowance recorded | 2 | 139 | 0
Commercial and Industrial [Member] |  |  |
Recorded Investment with no related allowance recorded | 0 | 0 | 1,516
Unpaid Principal Balance with no related allowance recorded | 0 | 0 | 1,629
Average Recorded Investment with no related allowance recorded | 18 | 596 | 464
Interest Income Recognized with no related allowance recorded | 0 | 0 | 2
Recorded Investment with an allowance recorded | 177 | 339 | 147
Unpaid Principal Balance with an allowance recorded | 177 | 363 | 147
Related Allowance | 14 | 95 | 19
Average Recorded Investment with an allowance recorded | 209 | 226 | 111
Interest Income Recognized with an allowance recorded | 13 | 5 | 12
Recorded Investment | 177 | 339 | 1,663
Unpaid Principal Balance | 177 | 363 | 1,776
Average Recorded Investment | 227 | 822 | 575
Interest Income Recognized with an allowance recorded | 13 | 5 | 14
Consumer Portfolio Segment [Member] |  |  |
Recorded Investment with no related allowance recorded | 0 | 0 | 0
Unpaid Principal Balance with no related allowance recorded | 0 | 0 | 0
Average Recorded Investment with no related allowance recorded | 0 | 0 | 1
Interest Income Recognized with no related allowance recorded | 0 | 0 | 0
Recorded Investment with an allowance recorded | 7 | 14 | 8
Unpaid Principal Balance with an allowance recorded | 7 | 15 | 8
Related Allowance | 1 | 2 | 1
Average Recorded Investment with an allowance recorded | 14 | 4 | 16
Interest Income Recognized with an allowance recorded | 1 | 0 | 0
Recorded Investment | 7 | 14 | 8
Unpaid Principal Balance | 7 | 15 | 8
Average Recorded Investment | 14 | 4 | 17
Interest Income Recognized with an allowance recorded | 1 | 0 | 0
Construction Real Estate [Member] |  |  |
Recorded Investment with no related allowance recorded | 0 | 0 | 80
Unpaid Principal Balance with no related allowance recorded | 0 | 0 | 80
Average Recorded Investment with no related allowance recorded | 0 | 16 | 16
Interest Income Recognized with no related allowance recorded | 0 | 0 | 0
Recorded Investment with an allowance recorded | 0 | 0 | 0
Unpaid Principal Balance with an allowance recorded | 0 | 0 | 0
Related Allowance | 0 | 0 | 0
Average Recorded Investment with an allowance recorded | 0 | 0 | 0
Interest Income Recognized with an allowance recorded | 0 | 0 | 0
Recorded Investment | 0 | 0 | 80
Unpaid Principal Balance | 0 | 0 | 80
Average Recorded Investment | 0 | 16 | 16
Interest Income Recognized with an allowance recorded | 0 | 0 | 0
Commercial Real Estate Portfolio Segment [Member] |  |  |
Recorded Investment with no related allowance recorded | 0 | 94 | 1,852
Unpaid Principal Balance with no related allowance recorded | 0 | 94 | 2,664
Average Recorded Investment with no related allowance recorded | 19 | 1,117 | 1,495
Interest Income Recognized with no related allowance recorded | 0 | 5 | 14
Recorded Investment with an allowance recorded | 165 | 179 | 1,180
Unpaid Principal Balance with an allowance recorded | 165 | 179 | 1,180
Related Allowance | 5 | 9 | 157
Average Recorded Investment with an allowance recorded | 158 | 456 | 897
Interest Income Recognized with an allowance recorded | 13 | 10 | 35
Recorded Investment | 165 | 273 | 3,032
Unpaid Principal Balance | 165 | 273 | 3,844
Average Recorded Investment | 177 | 1,573 | 2,392
Interest Income Recognized with an allowance recorded | 13 | 15 | 49
Residential Portfolio Segment [Member] |  |  |
Recorded Investment with no related allowance recorded | 550 | 164 | 162
Unpaid Principal Balance with no related allowance recorded | 595 | 172 | 162
Average Recorded Investment with no related allowance recorded | 231 | 228 | 99
Interest Income Recognized with no related allowance recorded | 1 | 0 | 3
Recorded Investment with an allowance recorded | 1,924 | 2,027 | 2,558
Unpaid Principal Balance with an allowance recorded | 1,954 | 2,084 | 2,651
Related Allowance | 131 | 146 | 254
Average Recorded Investment with an allowance recorded | 1,897 | 2,177 | 2,330
Interest Income Recognized with an allowance recorded | 93 | 64 | 87
Recorded Investment | 2,474 | 2,191 | 2,720
Unpaid Principal Balance | 2,549 | 2,256 | 2,813
Average Recorded Investment | 2,128 | 2,405 | 2,429
Interest Income Recognized with an allowance recorded | $ 94 | $ 64 | $ 90

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