v3.25.1
Note 4 - Loans and Allowance for Credit Losses - Summary of Collateral Types (Details) - USD ($)
$ in Thousands
Mar. 31, 2025
Dec. 31, 2024
Mar. 31, 2024
Dec. 31, 2023
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss $ 4,085,483 $ 3,992,534    
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest 61,929 59,929 $ 36,584 $ 35,843
Real Estate [Member]        
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 49,080 52,356    
Equipment [Member]        
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 652 927    
Collateral, Other [Member]        
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 10 289    
Collateral Pledged [Member]        
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 49,742 53,572    
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest 5,410 5,636    
Commercial Borrower [Member]        
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 2,881,103 2,787,277    
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest 52,448 50,130 28,610 27,971
Commercial Borrower [Member] | Real Estate [Member]        
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 38,131 40,691    
Commercial Borrower [Member] | Equipment [Member]        
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 652 927    
Commercial Borrower [Member] | Collateral, Other [Member]        
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 0 0    
Commercial Borrower [Member] | Collateral Pledged [Member]        
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 38,783 41,618    
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest 5,377 4,997    
Commercial Borrower [Member] | Commercial Portfolio Segment [Member]        
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 658,446 666,727    
Commercial Borrower [Member] | Commercial Portfolio Segment [Member] | Real Estate [Member]        
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 2,885 2,885    
Commercial Borrower [Member] | Commercial Portfolio Segment [Member] | Equipment [Member]        
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 0 275    
Commercial Borrower [Member] | Commercial Portfolio Segment [Member] | Collateral, Other [Member]        
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 0 0    
Commercial Borrower [Member] | Commercial Portfolio Segment [Member] | Collateral Pledged [Member]        
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 2,885 3,160    
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest 0 4    
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, Allowance for Credit Loss, Excluding Accrued Interest 42,972 40,732 18,635 18,086
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, Allowance for Credit Loss, Excluding Accrued Interest 18,369 16,277 5,922 6,135
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, Allowance for Credit Loss, Excluding Accrued Interest 4,749 4,716 2,148 1,776
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, Allowance for Credit Loss, Excluding Accrued Interest 16,342 16,513 8,105 7,726
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, Allowance for Credit Loss, Excluding Accrued Interest 3,512 3,226 2,460 2,449
Commercial Borrower [Member] | Commercial Real Estate Portfolio Segment [Member] | Real Estate [Member]        
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 34,647 37,197    
Commercial Borrower [Member] | Commercial Real Estate Portfolio Segment [Member] | Real Estate [Member] | Construction, Land, and Development [Member]        
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 32,711 30,044    
Commercial Borrower [Member] | Commercial Real Estate Portfolio Segment [Member] | Real Estate [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] | Real Estate [Member] | Non-Owner Occupied [Member]        
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 0 5,217    
Commercial Borrower [Member] | Commercial Real Estate Portfolio Segment [Member] | Real Estate [Member] | Owner Occupied Loans [Member]        
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 1,936 1,936    
Commercial Borrower [Member] | Commercial Real Estate Portfolio Segment [Member] | Equipment [Member]        
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 0 0    
Commercial Borrower [Member] | Commercial Real Estate Portfolio Segment [Member] | Equipment [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] | Equipment [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] | Equipment [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] | Equipment [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] | Collateral, Other [Member]        
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 0 0    
Commercial Borrower [Member] | Commercial Real Estate Portfolio Segment [Member] | Collateral, Other [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] | Collateral, Other [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] | Collateral, Other [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] | Collateral, Other [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] | Collateral Pledged [Member]        
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 34,647 37,197    
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest 4,993 4,993    
Commercial Borrower [Member] | Commercial Real Estate Portfolio Segment [Member] | Collateral Pledged [Member] | Construction, Land, and Development [Member]        
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 32,711 30,044    
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest 4,984 4,984    
Commercial Borrower [Member] | Commercial Real Estate Portfolio Segment [Member] | Collateral Pledged [Member] | Multifamily Loan [Member]        
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 0 0    
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest 0 0    
Commercial Borrower [Member] | Commercial Real Estate Portfolio Segment [Member] | Collateral Pledged [Member] | Non-Owner Occupied [Member]        
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 0 5,217    
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest 0 0    
Commercial Borrower [Member] | Commercial Real Estate Portfolio Segment [Member] | Collateral Pledged [Member] | Owner Occupied Loans [Member]        
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 1,936 1,936    
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest 9 9    
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, Allowance for Credit Loss, Excluding Accrued Interest 1,516 1,228 467 180
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, Allowance for Credit Loss, Excluding Accrued Interest 603 597 248 96
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, Allowance for Credit Loss, Excluding Accrued Interest 913 631 219 84
Commercial Borrower [Member] | Agricultural Real Estate Portfolio Segment [Member] | Real Estate [Member]        
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 599 609    
Commercial Borrower [Member] | Agricultural Real Estate Portfolio Segment [Member] | Real Estate [Member] | Land [Member]        
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 599 609    
Commercial Borrower [Member] | Agricultural Real Estate Portfolio Segment [Member] | Real Estate [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] | Equipment [Member]        
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 652 652    
Commercial Borrower [Member] | Agricultural Real Estate Portfolio Segment [Member] | Equipment [Member] | Land [Member]        
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 0 0    
Commercial Borrower [Member] | Agricultural Real Estate Portfolio Segment [Member] | Equipment [Member] | Production Loans [Member]        
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 652 652    
Commercial Borrower [Member] | Agricultural Real Estate Portfolio Segment [Member] | Collateral, Other [Member]        
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 0 0    
Commercial Borrower [Member] | Agricultural Real Estate Portfolio Segment [Member] | Collateral, Other [Member] | Land [Member]        
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 0 0    
Commercial Borrower [Member] | Agricultural Real Estate Portfolio Segment [Member] | Collateral, Other [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] | Collateral Pledged [Member]        
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 1,251 1,261    
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest 384 0    
Commercial Borrower [Member] | Agricultural Real Estate Portfolio Segment [Member] | Collateral Pledged [Member] | Land [Member]        
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 599 609    
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest 0 0    
Commercial Borrower [Member] | Agricultural Real Estate Portfolio Segment [Member] | Collateral Pledged [Member] | Production Loans [Member]        
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 652 652    
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest 384 0    
Consumer Borrower [Member]        
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss   1,205,257    
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest 9,481 9,799 7,974 7,872
Consumer Borrower [Member] | Commercial Portfolio Segment [Member]        
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest 7,960 8,170 9,508 9,705
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, Allowance for Credit Loss, Excluding Accrued Interest 9,128 9,359 7,789 7,671
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, Allowance for Credit Loss, Excluding Accrued Interest 7,042 6,921 6,151 6,087
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, Allowance for Credit Loss, Excluding Accrued Interest 467 357 489 485
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, Allowance for Credit Loss, Excluding Accrued Interest 1,180 1,339 865 835
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, Allowance for Credit Loss, Excluding Accrued Interest 439 742 284 264
Consumer Borrower [Member] | Residential Portfolio Segment [Member] | Real Estate [Member]        
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 10,949 11,665    
Consumer Borrower [Member] | Residential Portfolio Segment [Member] | Real Estate [Member] | Real Estate, First Lien [Member]        
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 2,195 2,514    
Consumer Borrower [Member] | Residential Portfolio Segment [Member] | Real Estate [Member] | Construction Loans [Member]        
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 4,680 4,680    
Consumer Borrower [Member] | Residential Portfolio Segment [Member] | Real Estate [Member] | Home Equity Loan [Member]        
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 1,270 1,366    
Consumer Borrower [Member] | Residential Portfolio Segment [Member] | Real Estate [Member] | Real Estate, Junior Lien [Member]        
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 2,804 3,105    
Consumer Borrower [Member] | Residential Portfolio Segment [Member] | Equipment [Member]        
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 0 0    
Consumer Borrower [Member] | Residential Portfolio Segment [Member] | Equipment [Member] | Real Estate, First Lien [Member]        
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 0 0    
Consumer Borrower [Member] | Residential Portfolio Segment [Member] | Equipment [Member] | Construction Loans [Member]        
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 0 0    
Consumer Borrower [Member] | Residential Portfolio Segment [Member] | Equipment [Member] | Home Equity Loan [Member]        
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 0 0    
Consumer Borrower [Member] | Residential Portfolio Segment [Member] | Equipment [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] | Collateral, Other [Member]        
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 0 0    
Consumer Borrower [Member] | Residential Portfolio Segment [Member] | Collateral, Other [Member] | Real Estate, First Lien [Member]        
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 0 0    
Consumer Borrower [Member] | Residential Portfolio Segment [Member] | Collateral, Other [Member] | Construction Loans [Member]        
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 0 0    
Consumer Borrower [Member] | Residential Portfolio Segment [Member] | Collateral, Other [Member] | Home Equity Loan [Member]        
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 0 0    
Consumer Borrower [Member] | Residential Portfolio Segment [Member] | Collateral, Other [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] | Collateral Pledged [Member]        
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 10,949 11,665    
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest 30 589    
Consumer Borrower [Member] | Residential Portfolio Segment [Member] | Collateral Pledged [Member] | Real Estate, First Lien [Member]        
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 2,195 2,514    
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest 0 7    
Consumer Borrower [Member] | Residential Portfolio Segment [Member] | Collateral Pledged [Member] | Construction Loans [Member]        
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 4,680 4,680    
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest 0 0    
Consumer Borrower [Member] | Residential Portfolio Segment [Member] | Collateral Pledged [Member] | Home Equity Loan [Member]        
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 1,270 1,366    
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest 0 252    
Consumer Borrower [Member] | Residential Portfolio Segment [Member] | Collateral Pledged [Member] | Real Estate, Junior Lien [Member]        
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 2,804 3,105    
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest 30 330    
Consumer Borrower [Member] | Consumer Portfolio Segment [Member]        
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 1,204,380 1,205,257    
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, Allowance for Credit Loss, Excluding Accrued Interest 353 440 $ 185 $ 201
Consumer Borrower [Member] | Consumer Portfolio Segment [Member] | Real Estate [Member]        
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 10,949 11,665    
Consumer Borrower [Member] | Consumer Portfolio Segment [Member] | Real Estate [Member] | Consumer, Other [Member]        
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 0 0    
Consumer Borrower [Member] | Consumer Portfolio Segment [Member] | Equipment [Member]        
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 0 0    
Consumer Borrower [Member] | Consumer Portfolio Segment [Member] | Equipment [Member] | Consumer, Other [Member]        
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 0 0    
Consumer Borrower [Member] | Consumer Portfolio Segment [Member] | Collateral, Other [Member]        
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 10 289    
Consumer Borrower [Member] | Consumer Portfolio Segment [Member] | Collateral, Other [Member] | Consumer, Other [Member]        
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 10 289    
Consumer Borrower [Member] | Consumer Portfolio Segment [Member] | Collateral Pledged [Member]        
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 10,959 11,954    
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest 33 639    
Consumer Borrower [Member] | Consumer Portfolio Segment [Member] | Collateral Pledged [Member] | Consumer, Other [Member]        
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 10 289    
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest $ 3 $ 50