Annual report [Section 13 and 15(d), not S-K Item 405]

Note 3 - Loans - Summary of Collateral Types (Details)

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Note 3 - Loans - Summary of Collateral Types (Details) - USD ($)
$ in Thousands
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Financing receivable, gross $ 12,605,836 $ 11,658,829    
Financing Receivable, Allowance for Credit Loss 164,458 153,317 $ 146,297 $ 116,660
Consumer 164,458 153,317 146,297 116,660
Real Estate [Member]        
Financing receivable, gross 64,678 54,005    
Collateral, Accounts Receivable [Member]        
Financing receivable, gross 1,721 7,240    
Equipment [Member]        
Financing receivable, gross 7,558 2,126    
Collateral, Other [Member]        
Financing receivable, gross 45,338 25,692    
Collateral Pledged [Member]        
Financing receivable, gross 119,295 89,063    
Financing Receivable, Allowance for Credit Loss 23,628 18,326    
Consumer 23,628 18,326    
Commercial Real Estate Portfolio Segment [Member]        
Financing receivable, gross 2,869,894 2,823,986    
Commercial Real Estate Portfolio Segment [Member] | Real Estate [Member]        
Financing receivable, gross 18,901 20,266    
Commercial Real Estate Portfolio Segment [Member] | Collateral, Accounts Receivable [Member]        
Financing receivable, gross 1,721 7,240    
Commercial Real Estate Portfolio Segment [Member] | Equipment [Member]        
Financing receivable, gross 7,449 2,126    
Commercial Real Estate Portfolio Segment [Member] | Collateral, Other [Member]        
Financing receivable, gross 42,684 24,016    
Commercial Real Estate Portfolio Segment [Member] | Collateral Pledged [Member]        
Financing receivable, gross 70,755 53,648    
Financing Receivable, Allowance for Credit Loss 17,615 16,189    
Consumer 17,615 16,189    
Real Estate Portfolio Segment[Member]        
Financing receivable, gross 8,173,009 7,251,447    
Real Estate Portfolio Segment[Member] | Construction Loans [Member]        
Financing receivable, gross 1,489,306 1,519,619    
Financing Receivable, Allowance for Credit Loss 38,597 44,658 42,889 26,994
Consumer 38,597 44,658 42,889 26,994
Real Estate Portfolio Segment[Member] | Owner Occupied Commercial [Member]        
Financing receivable, gross 2,547,143 2,257,163    
Financing Receivable, Allowance for Credit Loss 22,302 17,702 16,843 16,204
Consumer 22,302 17,702 16,843 16,204
Real Estate Portfolio Segment[Member] | One to Four Family [Member]        
Financing receivable, gross 1,444,623 1,249,938    
Financing Receivable, Allowance for Credit Loss 14,096 12,029 12,219 6,978
Consumer 14,096 12,029 12,219 6,978
Real Estate Portfolio Segment[Member] | Non-owner Occupied Commercial [Member]        
Financing receivable, gross 4,181,243 3,744,346    
Financing Receivable, Allowance for Credit Loss 31,328 25,395 29,590 22,647
Consumer 31,328 25,395 29,590 22,647
Real Estate Portfolio Segment[Member] | Other Mortgages [Member]        
Financing receivable, gross 8,173,009      
Real Estate Portfolio Segment[Member] | Real Estate [Member] | Construction Loans [Member]        
Financing receivable, gross 2,590 145    
Real Estate Portfolio Segment[Member] | Real Estate [Member] | Owner Occupied Commercial [Member]        
Financing receivable, gross 24,935 12,038    
Real Estate Portfolio Segment[Member] | Real Estate [Member] | One to Four Family [Member]        
Financing receivable, gross 3,719 15,694    
Real Estate Portfolio Segment[Member] | Real Estate [Member] | Non-owner Occupied Commercial [Member]        
Financing receivable, gross 14,533 5,862    
Real Estate Portfolio Segment[Member] | Real Estate [Member] | Other Mortgages [Member]        
Financing receivable, gross 43,187 33,594    
Real Estate Portfolio Segment[Member] | Collateral, Accounts Receivable [Member] | Construction Loans [Member]        
Financing receivable, gross 0 0    
Real Estate Portfolio Segment[Member] | Collateral, Accounts Receivable [Member] | Owner Occupied Commercial [Member]        
Financing receivable, gross 0 0    
Real Estate Portfolio Segment[Member] | Collateral, Accounts Receivable [Member] | One to Four Family [Member]        
Financing receivable, gross 0 0    
Real Estate Portfolio Segment[Member] | Collateral, Accounts Receivable [Member] | Non-owner Occupied Commercial [Member]        
Financing receivable, gross 0 0    
Real Estate Portfolio Segment[Member] | Collateral, Accounts Receivable [Member] | Other Mortgages [Member]        
Financing receivable, gross 0 0    
Real Estate Portfolio Segment[Member] | Equipment [Member] | Construction Loans [Member]        
Financing receivable, gross 0 0    
Real Estate Portfolio Segment[Member] | Equipment [Member] | Owner Occupied Commercial [Member]        
Financing receivable, gross 0 0    
Real Estate Portfolio Segment[Member] | Equipment [Member] | One to Four Family [Member]        
Financing receivable, gross 109 0    
Real Estate Portfolio Segment[Member] | Equipment [Member] | Non-owner Occupied Commercial [Member]        
Financing receivable, gross 0 0    
Real Estate Portfolio Segment[Member] | Equipment [Member] | Other Mortgages [Member]        
Financing receivable, gross 109 0    
Real Estate Portfolio Segment[Member] | Collateral, Other [Member] | Construction Loans [Member]        
Financing receivable, gross 946 978    
Real Estate Portfolio Segment[Member] | Collateral, Other [Member] | Owner Occupied Commercial [Member]        
Financing receivable, gross 78 698    
Real Estate Portfolio Segment[Member] | Collateral, Other [Member] | One to Four Family [Member]        
Financing receivable, gross 0 0    
Real Estate Portfolio Segment[Member] | Collateral, Other [Member] | Non-owner Occupied Commercial [Member]        
Financing receivable, gross 875 0    
Real Estate Portfolio Segment[Member] | Collateral, Other [Member] | Other Mortgages [Member]        
Financing receivable, gross 953 698    
Real Estate Portfolio Segment[Member] | Collateral Pledged [Member] | Construction Loans [Member]        
Financing receivable, gross 3,536 1,123    
Financing Receivable, Allowance for Credit Loss 0 1    
Consumer 0 1    
Real Estate Portfolio Segment[Member] | Collateral Pledged [Member] | Owner Occupied Commercial [Member]        
Financing receivable, gross 25,013 12,736    
Financing Receivable, Allowance for Credit Loss 2,890 475    
Consumer 2,890 475    
Real Estate Portfolio Segment[Member] | Collateral Pledged [Member] | One to Four Family [Member]        
Financing receivable, gross 3,828 15,694    
Financing Receivable, Allowance for Credit Loss 287 1,058    
Consumer 287 1,058    
Real Estate Portfolio Segment[Member] | Collateral Pledged [Member] | Non-owner Occupied Commercial [Member]        
Financing receivable, gross 15,408 5,862    
Financing Receivable, Allowance for Credit Loss 2,081 603    
Consumer 2,081 603    
Real Estate Portfolio Segment[Member] | Collateral Pledged [Member] | Other Mortgages [Member]        
Financing receivable, gross 44,249 34,291    
Financing Receivable, Allowance for Credit Loss 5,258 2,136    
Consumer 5,258 2,136    
Consumer Portfolio Segment [Member]        
Financing receivable, gross 73,627 63,777    
Financing Receivable, Allowance for Credit Loss 2,805 1,412 1,926 1,968
Consumer 2,805 $ 1,412 $ 1,926 $ 1,968
Consumer Portfolio Segment [Member] | Real Estate [Member]        
Financing receivable, gross 0      
Consumer Portfolio Segment [Member] | Collateral, Accounts Receivable [Member]        
Financing receivable, gross 0      
Consumer Portfolio Segment [Member] | Equipment [Member]        
Financing receivable, gross 0      
Consumer Portfolio Segment [Member] | Collateral, Other [Member]        
Financing receivable, gross 755      
Consumer Portfolio Segment [Member] | Collateral Pledged [Member]        
Financing receivable, gross 755      
Financing Receivable, Allowance for Credit Loss 755      
Consumer $ 755