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Note 5 - Loans Receivable and Credit Disclosures - Credit Risk Profile by Internally Assigned Grade (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Loan and lease receivable other than consumer and residential | $ 918,967 | $ 840,545
Pass [Member] |  |
Loan and lease receivable other than consumer and residential | 679,429 | 699,777
Watch [Member] |  |
Loan and lease receivable other than consumer and residential | 163,297 | 100,206
Special Mention [Member] |  |
Loan and lease receivable other than consumer and residential | 23,980 | 4,581
Substandard [Member] |  |
Loan and lease receivable other than consumer and residential | 38,373 | 32,401
Substandard Impaired [Member] |  |
Loan and lease receivable other than consumer and residential | 13,888 | 3,580
Construction Real Estate [Member] |  |
Loan and lease receivable other than consumer and residential | 45,497 | 47,895
Construction Real Estate [Member] | Pass [Member] |  |
Loan and lease receivable other than consumer and residential | 39,980 | 41,073
Construction Real Estate [Member] | Watch [Member] |  |
Loan and lease receivable other than consumer and residential | 5,350 | 6,822
Construction Real Estate [Member] | Special Mention [Member] |  |
Loan and lease receivable other than consumer and residential | 0 | 0
Construction Real Estate [Member] | Substandard [Member] |  |
Loan and lease receivable other than consumer and residential | 0 | 0
Construction Real Estate [Member] | Substandard Impaired [Member] |  |
Loan and lease receivable other than consumer and residential | 167 | 0
Commercial Real Estate Portfolio Segment [Member] |  |
Loan and lease receivable other than consumer and residential | 496,357 | 435,850
Commercial Real Estate Portfolio Segment [Member] | Pass [Member] |  |
Loan and lease receivable other than consumer and residential | 346,591 | 387,274
Commercial Real Estate Portfolio Segment [Member] | Watch [Member] |  |
Loan and lease receivable other than consumer and residential | 88,113 | 29,209
Commercial Real Estate Portfolio Segment [Member] | Special Mention [Member] |  |
Loan and lease receivable other than consumer and residential | 23,753 | 4,581
Commercial Real Estate Portfolio Segment [Member] | Substandard [Member] |  |
Loan and lease receivable other than consumer and residential | 27,642 | 14,703
Commercial Real Estate Portfolio Segment [Member] | Substandard Impaired [Member] |  |
Loan and lease receivable other than consumer and residential | 10,258 | 83
Agriculture Real Estate [Member] |  |
Loan and lease receivable other than consumer and residential | 151,992 | 160,771
Agriculture Real Estate [Member] | Pass [Member] |  |
Loan and lease receivable other than consumer and residential | 110,925 | 118,692
Agriculture Real Estate [Member] | Watch [Member] |  |
Loan and lease receivable other than consumer and residential | 33,144 | 32,780
Agriculture Real Estate [Member] | Special Mention [Member] |  |
Loan and lease receivable other than consumer and residential | 175 | 0
Agriculture Real Estate [Member] | Substandard [Member] |  |
Loan and lease receivable other than consumer and residential | 6,084 | 9,215
Agriculture Real Estate [Member] | Substandard Impaired [Member] |  |
Loan and lease receivable other than consumer and residential | 1,664 | 84
Commercial Portfolio Segment [Member] |  |
Loan and lease receivable other than consumer and residential | 122,535 | 84,084
Commercial Portfolio Segment [Member] | Pass [Member] |  |
Loan and lease receivable other than consumer and residential | 101,858 | 62,655
Commercial Portfolio Segment [Member] | Watch [Member] |  |
Loan and lease receivable other than consumer and residential | 15,897 | 16,147
Commercial Portfolio Segment [Member] | Special Mention [Member] |  |
Loan and lease receivable other than consumer and residential | 52 | 0
Commercial Portfolio Segment [Member] | Substandard [Member] |  |
Loan and lease receivable other than consumer and residential | 3,788 | 4,820
Commercial Portfolio Segment [Member] | Substandard Impaired [Member] |  |
Loan and lease receivable other than consumer and residential | 940 | 462
Agriculture [Member] |  |
Loan and lease receivable other than consumer and residential | 102,586 | 111,945
Agriculture [Member] | Pass [Member] |  |
Loan and lease receivable other than consumer and residential | 80,075 | 90,083
Agriculture [Member] | Watch [Member] |  |
Loan and lease receivable other than consumer and residential | 20,793 | 15,248
Agriculture [Member] | Special Mention [Member] |  |
Loan and lease receivable other than consumer and residential | 0 | 0
Agriculture [Member] | Substandard [Member] |  |
Loan and lease receivable other than consumer and residential | 859 | 3,663
Agriculture [Member] | Substandard Impaired [Member] |  |
Loan and lease receivable other than consumer and residential | $ 859 | $ 2,951

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