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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, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Recorded Investment with no related allowance recorded | $ 572 | $ 3,958 | $ 2,728
Unpaid Principal Balance with no related allowance recorded | 694 | 4,969 | 3,398
Average Recorded Investment with no related allowance recorded | 2,555 | 2,404 | 1,165
Interest Income Recognized with no related allowance recorded | 5 | 19 | 53
Recorded Investment with an allowance recorded | 4,861 | 3,893 | 3,194
Unpaid Principal Balance with an allowance recorded | 4,943 | 3,986 | 3,323
Related Allowance | 503 | 431 | 355
Average Recorded Investment with an allowance recorded | 4,736 | 3,506 | 3,983
Interest Income Recognized with an allowance recorded | 218 | 134 | 116
Recorded Investment | 5,433 | 7,851 | 5,922
Unpaid Principal Balance | 5,637 | 8,955 | 6,721
Average Recorded Investment | 7,291 | 5,910 | 5,148
Interest Income Recognized with an allowance recorded | 223 | 153 | 169
Agricultural [Member] |  |  |
Recorded Investment with no related allowance recorded | 314 | 348 | 545
Unpaid Principal Balance with no related allowance recorded | 428 | 434 | 545
Average Recorded Investment with no related allowance recorded | 598 | 329 | 146
Interest Income Recognized with no related allowance recorded | 0 | 0 | 10
Recorded Investment with an allowance recorded | 2,302 | 0 | 379
Unpaid Principal Balance with an allowance recorded | 2,302 | 0 | 439
Related Allowance | 251 | 0 | 103
Average Recorded Investment with an allowance recorded | 1,873 | 152 | 388
Interest Income Recognized with an allowance recorded | 139 | 0 | 0
Recorded Investment | 2,616 | 348 | 924
Unpaid Principal Balance | 2,730 | 434 | 984
Average Recorded Investment | 2,471 | 481 | 534
Interest Income Recognized with an allowance recorded | 139 | 0 | 10
Commercial and Industrial [Member] |  |  |
Recorded Investment with no related allowance recorded | 0 | 1,516 | 259
Unpaid Principal Balance with no related allowance recorded | 0 | 1,629 | 340
Average Recorded Investment with no related allowance recorded | 596 | 464 | 104
Interest Income Recognized with no related allowance recorded | 0 | 2 | 9
Recorded Investment with an allowance recorded | 339 | 147 | 0
Unpaid Principal Balance with an allowance recorded | 363 | 147 | 0
Related Allowance | 95 | 19 | 0
Average Recorded Investment with an allowance recorded | 226 | 111 | 86
Interest Income Recognized with an allowance recorded | 5 | 12 | 1
Recorded Investment | 339 | 1,663 | 259
Unpaid Principal Balance | 363 | 1,776 | 340
Average Recorded Investment | 822 | 575 | 190
Interest Income Recognized with an allowance recorded | 5 | 14 | 10
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 | 1 | 0
Interest Income Recognized with no related allowance recorded | 0 | 0 | 0
Recorded Investment with an allowance recorded | 14 | 8 | 17
Unpaid Principal Balance with an allowance recorded | 15 | 8 | 18
Related Allowance | 2 | 1 | 4
Average Recorded Investment with an allowance recorded | 4 | 16 | 48
Interest Income Recognized with an allowance recorded | 0 | 0 | 0
Recorded Investment | 14 | 8 | 17
Unpaid Principal Balance | 15 | 8 | 18
Average Recorded Investment | 4 | 17 | 48
Interest Income Recognized with an allowance recorded | 0 | 0 | 0
Construction Real Estate [Member] |  |  |
Recorded Investment with no related allowance recorded | 0 | 80 | 0
Unpaid Principal Balance with no related allowance recorded | 0 | 80 | 0
Average Recorded Investment with no related allowance recorded | 16 | 16 | 0
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 | 80 | 0
Unpaid Principal Balance | 0 | 80 | 0
Average Recorded Investment | 16 | 16 | 0
Interest Income Recognized with an allowance recorded | 0 | 0 | 0
Commercial Real Estate Portfolio Segment [Member] |  |  |
Recorded Investment with no related allowance recorded | 94 | 1,852 | 1,882
Unpaid Principal Balance with no related allowance recorded | 94 | 2,664 | 2,471
Average Recorded Investment with no related allowance recorded | 1,117 | 1,495 | 782
Interest Income Recognized with no related allowance recorded | 5 | 14 | 30
Recorded Investment with an allowance recorded | 179 | 1,180 | 406
Unpaid Principal Balance with an allowance recorded | 179 | 1,180 | 406
Related Allowance | 9 | 157 | 13
Average Recorded Investment with an allowance recorded | 456 | 897 | 975
Interest Income Recognized with an allowance recorded | 10 | 35 | 32
Recorded Investment | 273 | 3,032 | 2,288
Unpaid Principal Balance | 273 | 3,844 | 2,877
Average Recorded Investment | 1,573 | 2,392 | 1,757
Interest Income Recognized with an allowance recorded | 15 | 49 | 62
Residential Portfolio Segment [Member] |  |  |
Recorded Investment with no related allowance recorded | 164 | 162 | 42
Unpaid Principal Balance with no related allowance recorded | 172 | 162 | 42
Average Recorded Investment with no related allowance recorded | 228 | 99 | 133
Interest Income Recognized with no related allowance recorded | 0 | 3 | 4
Recorded Investment with an allowance recorded | 2,027 | 2,558 | 2,392
Unpaid Principal Balance with an allowance recorded | 2,084 | 2,651 | 2,460
Related Allowance | 146 | 254 | 235
Average Recorded Investment with an allowance recorded | 2,177 | 2,330 | 2,486
Interest Income Recognized with an allowance recorded | 64 | 87 | 83
Recorded Investment | 2,191 | 2,720 | 2,434
Unpaid Principal Balance | 2,256 | 2,813 | 2,502
Average Recorded Investment | 2,405 | 2,429 | 2,619
Interest Income Recognized with an allowance recorded | $ 64 | $ 90 | $ 87

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