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Note 4 - Loans and Allowance for Credit Losses - Schedule of Loans Past Due (Details) - USD ($) $ in Thousands | Sep. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | $ 4,102,075 | $ 3,992,534
Financing Receivable, Excluding Accrued Interest, Nonaccrual | 59,644 | 54,433
Financial Asset, Not Past Due [Member] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 4,035,075 | 3,924,341
Financial Asset, 30 to 59 Days Past Due [Member] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 2,883 | 3,987
Financial Asset, 60 to 89 Days Past Due [Member] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 4,473 | 1,320
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 0 | 8,453
Commercial Borrower [Member] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 2,856,720 | 2,787,277
Financing Receivable, Excluding Accrued Interest, Nonaccrual | 48,616 | 41,757
Commercial Borrower [Member] | Financial Asset, Not Past Due [Member] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 2,802,494 | 2,735,772
Commercial Borrower [Member] | Financial Asset, 30 to 59 Days Past Due [Member] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 1,637 | 1,215
Commercial Borrower [Member] | Financial Asset, 60 to 89 Days Past Due [Member] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 3,973 | 133
Commercial Borrower [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 0 | 8,400
Commercial Borrower [Member] | Commercial Portfolio Segment [Member] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 702,135 | 666,727
Financing Receivable, Excluding Accrued Interest, Nonaccrual | 12,190 | 3,218
Commercial Borrower [Member] | Commercial Portfolio Segment [Member] | Financial Asset, Not Past Due [Member] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 689,204 | 654,073
Commercial Borrower [Member] | Commercial Portfolio Segment [Member] | Financial Asset, 30 to 59 Days Past Due [Member] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 741 | 903
Commercial Borrower [Member] | Commercial Portfolio Segment [Member] | Financial Asset, 60 to 89 Days Past Due [Member] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 0 | 133
Commercial Borrower [Member] | Commercial Portfolio Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 0 | 8,400
Commercial Borrower [Member] | Commercial Real Estate Portfolio Segment [Member] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 2,025,634 | 1,996,243
Financing Receivable, Excluding Accrued Interest, Nonaccrual | 35,186 | 37,278
Commercial Borrower [Member] | Commercial Real Estate Portfolio Segment [Member] | Construction, Land, and Development [Member] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 349,768 | 294,677
Financing Receivable, Excluding Accrued Interest, Nonaccrual | 31,315 | 30,044
Commercial Borrower [Member] | Commercial Real Estate Portfolio Segment [Member] | Multifamily Loan [Member] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 374,761 | 363,123
Financing Receivable, Excluding Accrued Interest, Nonaccrual | 761 | 0
Commercial Borrower [Member] | Commercial Real Estate Portfolio Segment [Member] | Non-Owner Occupied [Member] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 865,785 | 967,025
Financing Receivable, Excluding Accrued Interest, Nonaccrual | 1,693 | 5,217
Commercial Borrower [Member] | Commercial Real Estate Portfolio Segment [Member] | Owner Occupied Loans [Member] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 435,320 | 371,418
Financing Receivable, Excluding Accrued Interest, Nonaccrual | 1,417 | 2,017
Commercial Borrower [Member] | Commercial Real Estate Portfolio Segment [Member] | Financial Asset, Not Past Due [Member] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 1,985,908 | 1,958,740
Commercial Borrower [Member] | Commercial Real Estate Portfolio Segment [Member] | Financial Asset, Not Past Due [Member] | Construction, Land, and Development [Member] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 318,453 | 264,633
Commercial Borrower [Member] | Commercial Real Estate Portfolio Segment [Member] | Financial Asset, Not Past Due [Member] | Multifamily Loan [Member] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 370,027 | 363,123
Commercial Borrower [Member] | Commercial Real Estate Portfolio Segment [Member] | Financial Asset, Not Past Due [Member] | Non-Owner Occupied [Member] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 864,092 | 961,808
Commercial Borrower [Member] | Commercial Real Estate Portfolio Segment [Member] | Financial Asset, Not Past Due [Member] | Owner Occupied Loans [Member] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 433,336 | 369,176
Commercial Borrower [Member] | Commercial Real Estate Portfolio Segment [Member] | Financial Asset, 30 to 59 Days Past Due [Member] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 567 | 225
Commercial Borrower [Member] | Commercial Real Estate Portfolio Segment [Member] | Financial Asset, 30 to 59 Days Past Due [Member] | Construction, Land, and Development [Member] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 0 | 0
Commercial Borrower [Member] | Commercial Real Estate Portfolio Segment [Member] | Financial Asset, 30 to 59 Days Past Due [Member] | Multifamily Loan [Member] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 0 | 0
Commercial Borrower [Member] | Commercial Real Estate Portfolio Segment [Member] | Financial Asset, 30 to 59 Days Past Due [Member] | Non-Owner Occupied [Member] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 0 | 0
Commercial Borrower [Member] | Commercial Real Estate Portfolio Segment [Member] | Financial Asset, 30 to 59 Days Past Due [Member] | Owner Occupied Loans [Member] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 567 | 225
Commercial Borrower [Member] | Commercial Real Estate Portfolio Segment [Member] | Financial Asset, 60 to 89 Days Past Due [Member] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 3,973 | 0
Commercial Borrower [Member] | Commercial Real Estate Portfolio Segment [Member] | Financial Asset, 60 to 89 Days Past Due [Member] | Construction, Land, and Development [Member] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 0 | 0
Commercial Borrower [Member] | Commercial Real Estate Portfolio Segment [Member] | Financial Asset, 60 to 89 Days Past Due [Member] | Multifamily Loan [Member] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 3,973 | 0
Commercial Borrower [Member] | Commercial Real Estate Portfolio Segment [Member] | Financial Asset, 60 to 89 Days Past Due [Member] | Non-Owner Occupied [Member] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 0 | 0
Commercial Borrower [Member] | Commercial Real Estate Portfolio Segment [Member] | Financial Asset, 60 to 89 Days Past Due [Member] | Owner Occupied Loans [Member] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 0 | 0
Commercial Borrower [Member] | Commercial Real Estate Portfolio Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 0 | 0
Commercial Borrower [Member] | Commercial Real Estate Portfolio Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Construction, Land, and Development [Member] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 0 | 0
Commercial Borrower [Member] | Commercial Real Estate Portfolio Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Multifamily Loan [Member] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 0 | 0
Commercial Borrower [Member] | Commercial Real Estate Portfolio Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Non-Owner Occupied [Member] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 0 | 0
Commercial Borrower [Member] | Commercial Real Estate Portfolio Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Owner Occupied Loans [Member] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 0 | 0
Commercial Borrower [Member] | Agricultural Real Estate Portfolio Segment [Member] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 128,951 | 124,307
Financing Receivable, Excluding Accrued Interest, Nonaccrual | 1,240 | 1,261
Commercial Borrower [Member] | Agricultural Real Estate Portfolio Segment [Member] | Land [Member] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 65,900 | 61,299
Financing Receivable, Excluding Accrued Interest, Nonaccrual | 702 | 609
Commercial Borrower [Member] | Agricultural Real Estate Portfolio Segment [Member] | Production Loans [Member] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 63,051 | 63,008
Financing Receivable, Excluding Accrued Interest, Nonaccrual | 538 | 652
Commercial Borrower [Member] | Agricultural Real Estate Portfolio Segment [Member] | Financial Asset, Not Past Due [Member] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 127,382 | 122,959
Commercial Borrower [Member] | Agricultural Real Estate Portfolio Segment [Member] | Financial Asset, Not Past Due [Member] | Land [Member] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 65,198 | 60,690
Commercial Borrower [Member] | Agricultural Real Estate Portfolio Segment [Member] | Financial Asset, Not Past Due [Member] | Production Loans [Member] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 62,184 | 62,269
Commercial Borrower [Member] | Agricultural Real Estate Portfolio Segment [Member] | Financial Asset, 30 to 59 Days Past Due [Member] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 329 | 87
Commercial Borrower [Member] | Agricultural Real Estate Portfolio Segment [Member] | Financial Asset, 30 to 59 Days Past Due [Member] | Land [Member] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 0 | 0
Commercial Borrower [Member] | Agricultural Real Estate Portfolio Segment [Member] | Financial Asset, 30 to 59 Days Past Due [Member] | Production Loans [Member] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 329 | 87
Commercial Borrower [Member] | Agricultural Real Estate Portfolio Segment [Member] | Financial Asset, 60 to 89 Days Past Due [Member] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 0 | 0
Commercial Borrower [Member] | Agricultural Real Estate Portfolio Segment [Member] | Financial Asset, 60 to 89 Days Past Due [Member] | Land [Member] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 0 | 0
Commercial Borrower [Member] | Agricultural Real Estate Portfolio Segment [Member] | Financial Asset, 60 to 89 Days Past Due [Member] | Production Loans [Member] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 0 | 0
Commercial Borrower [Member] | Agricultural Real Estate Portfolio Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 0 | 0
Commercial Borrower [Member] | Agricultural Real Estate Portfolio Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Land [Member] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 0 | 0
Commercial Borrower [Member] | Agricultural Real Estate Portfolio Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Production Loans [Member] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 0 | 0
Consumer Borrower [Member] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 1,205,257
Consumer Borrower [Member] | Residential Portfolio Segment [Member] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 1,203,641 | 1,161,135
Financing Receivable, Excluding Accrued Interest, Nonaccrual | 10,971 | 12,338
Consumer Borrower [Member] | Residential Portfolio Segment [Member] | Real Estate, First Lien [Member] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 894,402 | 921,019
Financing Receivable, Excluding Accrued Interest, Nonaccrual | 2,687 | 2,988
Consumer Borrower [Member] | Residential Portfolio Segment [Member] | Construction Loans [Member] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 34,124 | 33,547
Financing Receivable, Excluding Accrued Interest, Nonaccrual | 4,680 | 4,680
Consumer Borrower [Member] | Residential Portfolio Segment [Member] | Home Equity Loan [Member] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 234,681 | 162,509
Financing Receivable, Excluding Accrued Interest, Nonaccrual | 1,213 | 1,460
Consumer Borrower [Member] | Residential Portfolio Segment [Member] | Real Estate, Junior Lien [Member] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 40,434 | 44,060
Financing Receivable, Excluding Accrued Interest, Nonaccrual | 2,391 | 3,210
Consumer Borrower [Member] | Residential Portfolio Segment [Member] | Financial Asset, Not Past Due [Member] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 1,191,311 | 1,144,918
Consumer Borrower [Member] | Residential Portfolio Segment [Member] | Financial Asset, Not Past Due [Member] | Real Estate, First Lien [Member] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 890,793 | 915,167
Consumer Borrower [Member] | Residential Portfolio Segment [Member] | Financial Asset, Not Past Due [Member] | Construction Loans [Member] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 29,444 | 28,867
Consumer Borrower [Member] | Residential Portfolio Segment [Member] | Financial Asset, Not Past Due [Member] | Home Equity Loan [Member] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 233,127 | 160,430
Consumer Borrower [Member] | Residential Portfolio Segment [Member] | Financial Asset, Not Past Due [Member] | Real Estate, Junior Lien [Member] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 37,947 | 40,454
Consumer Borrower [Member] | Residential Portfolio Segment [Member] | Financial Asset, 30 to 59 Days Past Due [Member] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 1,213 | 2,669
Consumer Borrower [Member] | Residential Portfolio Segment [Member] | Financial Asset, 30 to 59 Days Past Due [Member] | Real Estate, First Lien [Member] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 797 | 2,104
Consumer Borrower [Member] | Residential Portfolio Segment [Member] | Financial Asset, 30 to 59 Days Past Due [Member] | Construction Loans [Member] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 0 | 0
Consumer Borrower [Member] | Residential Portfolio Segment [Member] | Financial Asset, 30 to 59 Days Past Due [Member] | Home Equity Loan [Member] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 320 | 169
Consumer Borrower [Member] | Residential Portfolio Segment [Member] | Financial Asset, 30 to 59 Days Past Due [Member] | Real Estate, Junior Lien [Member] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 96 | 396
Consumer Borrower [Member] | Residential Portfolio Segment [Member] | Financial Asset, 60 to 89 Days Past Due [Member] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 146 | 1,157
Consumer Borrower [Member] | Residential Portfolio Segment [Member] | Financial Asset, 60 to 89 Days Past Due [Member] | Real Estate, First Lien [Member] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 125 | 707
Consumer Borrower [Member] | Residential Portfolio Segment [Member] | Financial Asset, 60 to 89 Days Past Due [Member] | Construction Loans [Member] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 0 | 0
Consumer Borrower [Member] | Residential Portfolio Segment [Member] | Financial Asset, 60 to 89 Days Past Due [Member] | Home Equity Loan [Member] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 21 | 450
Consumer Borrower [Member] | Residential Portfolio Segment [Member] | Financial Asset, 60 to 89 Days Past Due [Member] | Real Estate, Junior Lien [Member] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 0 | 0
Consumer Borrower [Member] | Residential Portfolio Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 0 | 53
Consumer Borrower [Member] | Residential Portfolio Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Real Estate, First Lien [Member] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 0 | 53
Consumer Borrower [Member] | Residential Portfolio Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Construction Loans [Member] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 0 | 0
Consumer Borrower [Member] | Residential Portfolio Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Home Equity Loan [Member] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 0 | 0
Consumer Borrower [Member] | Residential Portfolio Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Real Estate, Junior Lien [Member] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 0 | 0
Consumer Borrower [Member] | Consumer Portfolio Segment [Member] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 1,245,355 | 1,205,257
Financing Receivable, Excluding Accrued Interest, Nonaccrual | 11,028 | 12,676
Consumer Borrower [Member] | Consumer Portfolio Segment [Member] | Consumer, Other [Member] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 41,714 | 44,122
Financing Receivable, Excluding Accrued Interest, Nonaccrual | 57 | 338
Consumer Borrower [Member] | Consumer Portfolio Segment [Member] | Financial Asset, Not Past Due [Member] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 1,232,581 | 1,188,569
Consumer Borrower [Member] | Consumer Portfolio Segment [Member] | Financial Asset, Not Past Due [Member] | Consumer, Other [Member] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 41,270 | 43,651
Consumer Borrower [Member] | Consumer Portfolio Segment [Member] | Financial Asset, 30 to 59 Days Past Due [Member] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 1,246 | 2,772
Consumer Borrower [Member] | Consumer Portfolio Segment [Member] | Financial Asset, 30 to 59 Days Past Due [Member] | Consumer, Other [Member] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 33 | 103
Consumer Borrower [Member] | Consumer Portfolio Segment [Member] | Financial Asset, 60 to 89 Days Past Due [Member] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 500 | 1,187
Consumer Borrower [Member] | Consumer Portfolio Segment [Member] | Financial Asset, 60 to 89 Days Past Due [Member] | Consumer, Other [Member] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 354 | 30
Consumer Borrower [Member] | Consumer Portfolio Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 0 | 53
Consumer Borrower [Member] | Consumer Portfolio Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Consumer, Other [Member] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | $ 0 | $ 0

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