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Note 4 - Loans and Allowance for Credit Losses - Schedule of Loans Past Due (Details) - USD ($) $ in Thousands | Mar. 31, 2025 | Dec. 31, 2024
--- | --- | ---
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | $ 4,085,483 | $ 3,992,534
Financing Receivable, Excluding Accrued Interest, Nonaccrual | 50,517 | 54,433
Financial Asset, Not Past Due [Member] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 4,021,967 | 3,924,341
Financial Asset, 30 to 59 Days Past Due [Member] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 12,789 | 3,987
Financial Asset, 60 to 89 Days Past Due [Member] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 210 | 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 | 2,881,103 | 2,787,277
Financing Receivable, Excluding Accrued Interest, Nonaccrual | 38,934 | 41,757
Commercial Borrower [Member] | Financial Asset, Not Past Due [Member] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 2,830,942 | 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 | 11,047 | 1,215
Commercial Borrower [Member] | Financial Asset, 60 to 89 Days Past Due [Member] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 180 | 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 | 658,446 | 666,727
Financing Receivable, Excluding Accrued Interest, Nonaccrual | 2,955 | 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 | 646,332 | 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 | 9,159 | 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 | 2,089,523 | 1,996,243
Financing Receivable, Excluding Accrued Interest, Nonaccrual | 34,728 | 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 | 360,024 | 294,677
Financing Receivable, Excluding Accrued Interest, Nonaccrual | 32,711 | 30,044
Commercial Borrower [Member] | Commercial Real Estate Portfolio Segment [Member] | Multifamily Loan [Member] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 353,060 | 363,123
Financing Receivable, Excluding Accrued Interest, Nonaccrual | 0 | 0
Commercial Borrower [Member] | Commercial Real Estate Portfolio Segment [Member] | Non-Owner Occupied [Member] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 951,559 | 967,025
Financing Receivable, Excluding Accrued Interest, Nonaccrual | 0 | 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 | 424,880 | 371,418
Financing Receivable, Excluding Accrued Interest, Nonaccrual | 2,017 | 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 | 2,053,324 | 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 | 327,138 | 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 | 353,060 | 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 | 951,559 | 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 | 421,567 | 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 | 1,471 | 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 | 175 | 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 | 1,296 | 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 | 0 | 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 | 0 | 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 | 133,134 | 124,307
Financing Receivable, Excluding Accrued Interest, Nonaccrual | 1,251 | 1,261
Commercial Borrower [Member] | Agricultural Real Estate Portfolio Segment [Member] | Land [Member] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 68,894 | 61,299
Financing Receivable, Excluding Accrued Interest, Nonaccrual | 599 | 609
Commercial Borrower [Member] | Agricultural Real Estate Portfolio Segment [Member] | Production Loans [Member] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 64,240 | 63,008
Financing Receivable, Excluding Accrued Interest, Nonaccrual | 652 | 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 | 131,286 | 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 | 68,115 | 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 | 63,171 | 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 | 417 | 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 | 417 | 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 | 180 | 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 | 180 | 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 | 1,165,427 | 1,161,135
Financing Receivable, Excluding Accrued Interest, Nonaccrual | 11,509 | 12,338
Consumer Borrower [Member] | Residential Portfolio Segment [Member] | Real Estate, First Lien [Member] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 907,534 | 921,019
Financing Receivable, Excluding Accrued Interest, Nonaccrual | 2,533 | 2,988
Consumer Borrower [Member] | Residential Portfolio Segment [Member] | Construction Loans [Member] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 38,553 | 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 | 175,600 | 162,509
Financing Receivable, Excluding Accrued Interest, Nonaccrual | 1,391 | 1,460
Consumer Borrower [Member] | Residential Portfolio Segment [Member] | Real Estate, Junior Lien [Member] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 43,740 | 44,060
Financing Receivable, Excluding Accrued Interest, Nonaccrual | 2,905 | 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 | 1,152,238 | 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 | 903,810 | 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 | 33,873 | 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 | 173,919 | 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 | 40,636 | 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 | 1,669 | 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 | 1,191 | 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 | 290 | 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 | 188 | 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 | 11 | 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 | 0 | 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 | 0 | 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 | 11 | 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 | 1,204,380 | 1,205,257
Financing Receivable, Excluding Accrued Interest, Nonaccrual | 11,583 | 12,676
Consumer Borrower [Member] | Consumer Portfolio Segment [Member] | Consumer, Other [Member] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 38,953 | 44,122
Financing Receivable, Excluding Accrued Interest, Nonaccrual | 74 | 338
Consumer Borrower [Member] | Consumer Portfolio Segment [Member] | Financial Asset, Not Past Due [Member] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 1,191,025 | 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 | 38,787 | 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 | 1,742 | 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 | 73 | 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 | 30 | 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 | 19 | 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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