Quarterly report [Sections 13 or 15(d)]

Note 5 - Loans - Summary of Collateral Types (Details)

v3.25.1
Note 5 - Loans - Summary of Collateral Types (Details) - USD ($)
$ in Thousands
Mar. 31, 2025
Dec. 31, 2024
Mar. 31, 2024
Dec. 31, 2023
Financing Receivable, before Allowance for Credit Loss $ 12,886,831 $ 12,605,836    
Financing Receivable, Allowance for Credit Loss 165,034 164,458 $ 155,892 $ 153,317
Commercial Real Estate Portfolio Segment [Member]        
Financing Receivable, before Allowance for Credit Loss 2,924,533 2,869,894    
Commercial Real Estate Portfolio Segment [Member] | Commercial, Financial, and Agricultural Loans [Member]        
Financing Receivable, Allowance for Credit Loss 52,518 55,330 51,022 52,121
Real Estate Portfolio Segment[Member]        
Financing Receivable, before Allowance for Credit Loss 8,297,574 8,173,009    
Real Estate Portfolio Segment[Member] | Construction Loans [Member]        
Financing Receivable, before Allowance for Credit Loss 1,599,410 1,489,306    
Financing Receivable, Allowance for Credit Loss 41,809 38,597 45,689 44,658
Real Estate Portfolio Segment[Member] | Owner Occupied Commercial [Member]        
Financing Receivable, before Allowance for Credit Loss 2,543,819 2,547,143    
Financing Receivable, Allowance for Credit Loss 21,330 22,302 18,391 17,702
Real Estate Portfolio Segment[Member] | One to Four Family [Member]        
Financing Receivable, before Allowance for Credit Loss 1,494,189 1,444,623    
Financing Receivable, Allowance for Credit Loss 15,246 14,096 12,994 12,029
Real Estate Portfolio Segment[Member] | Non-owner Occupied Commercial [Member]        
Financing Receivable, before Allowance for Credit Loss 4,259,566 4,181,243    
Financing Receivable, Allowance for Credit Loss 31,853 31,328 26,255 25,395
Consumer Portfolio Segment [Member]        
Financing Receivable, before Allowance for Credit Loss 65,314 73,627    
Financing Receivable, Allowance for Credit Loss 2,278 2,805 $ 1,541 $ 1,412
Real Estate [Member]        
Financing Receivable, before Allowance for Credit Loss 60,847 64,678    
Real Estate [Member] | Commercial Real Estate Portfolio Segment [Member] | Commercial, Financial, and Agricultural Loans [Member]        
Financing Receivable, before Allowance for Credit Loss 30,859 18,901    
Real Estate [Member] | Real Estate Portfolio Segment[Member]        
Financing Receivable, before Allowance for Credit Loss 22,044 43,187    
Real Estate [Member] | Real Estate Portfolio Segment[Member] | Construction Loans [Member]        
Financing Receivable, before Allowance for Credit Loss 7,944 2,590    
Real Estate [Member] | Real Estate Portfolio Segment[Member] | Owner Occupied Commercial [Member]        
Financing Receivable, before Allowance for Credit Loss 12,443 24,935    
Real Estate [Member] | Real Estate Portfolio Segment[Member] | One to Four Family [Member]        
Financing Receivable, before Allowance for Credit Loss 5,166 3,719    
Real Estate [Member] | Real Estate Portfolio Segment[Member] | Non-owner Occupied Commercial [Member]        
Financing Receivable, before Allowance for Credit Loss 4,435 14,533    
Real Estate [Member] | Consumer Portfolio Segment [Member]        
Financing Receivable, before Allowance for Credit Loss 0 0    
Collateral, Accounts Receivable [Member]        
Financing Receivable, before Allowance for Credit Loss 1,656 1,721    
Collateral, Accounts Receivable [Member] | Commercial Real Estate Portfolio Segment [Member] | Commercial, Financial, and Agricultural Loans [Member]        
Financing Receivable, before Allowance for Credit Loss 1,656 1,721    
Collateral, Accounts Receivable [Member] | Real Estate Portfolio Segment[Member]        
Financing Receivable, before Allowance for Credit Loss 0 0    
Collateral, Accounts Receivable [Member] | Real Estate Portfolio Segment[Member] | Construction Loans [Member]        
Financing Receivable, before Allowance for Credit Loss 0 0    
Collateral, Accounts Receivable [Member] | Real Estate Portfolio Segment[Member] | Owner Occupied Commercial [Member]        
Financing Receivable, before Allowance for Credit Loss 0 0    
Collateral, Accounts Receivable [Member] | Real Estate Portfolio Segment[Member] | One to Four Family [Member]        
Financing Receivable, before Allowance for Credit Loss 0 0    
Collateral, Accounts Receivable [Member] | Real Estate Portfolio Segment[Member] | Non-owner Occupied Commercial [Member]        
Financing Receivable, before Allowance for Credit Loss 0 0    
Collateral, Accounts Receivable [Member] | Consumer Portfolio Segment [Member]        
Financing Receivable, before Allowance for Credit Loss 0 0    
Equipment [Member]        
Financing Receivable, before Allowance for Credit Loss 7,574 7,558    
Equipment [Member] | Commercial Real Estate Portfolio Segment [Member] | Commercial, Financial, and Agricultural Loans [Member]        
Financing Receivable, before Allowance for Credit Loss 6,642 7,449    
Equipment [Member] | Real Estate Portfolio Segment[Member]        
Financing Receivable, before Allowance for Credit Loss 932 109    
Equipment [Member] | Real Estate Portfolio Segment[Member] | Construction Loans [Member]        
Financing Receivable, before Allowance for Credit Loss 0 0    
Equipment [Member] | Real Estate Portfolio Segment[Member] | Owner Occupied Commercial [Member]        
Financing Receivable, before Allowance for Credit Loss 0 0    
Equipment [Member] | Real Estate Portfolio Segment[Member] | One to Four Family [Member]        
Financing Receivable, before Allowance for Credit Loss 202 109    
Equipment [Member] | Real Estate Portfolio Segment[Member] | Non-owner Occupied Commercial [Member]        
Financing Receivable, before Allowance for Credit Loss 730 0    
Equipment [Member] | Consumer Portfolio Segment [Member]        
Financing Receivable, before Allowance for Credit Loss 0 0    
Collateral, Other [Member]        
Financing Receivable, before Allowance for Credit Loss 41,694 45,338    
Collateral, Other [Member] | Commercial Real Estate Portfolio Segment [Member] | Commercial, Financial, and Agricultural Loans [Member]        
Financing Receivable, before Allowance for Credit Loss 38,199 42,684    
Collateral, Other [Member] | Real Estate Portfolio Segment[Member]        
Financing Receivable, before Allowance for Credit Loss 1,809 953    
Collateral, Other [Member] | Real Estate Portfolio Segment[Member] | Construction Loans [Member]        
Financing Receivable, before Allowance for Credit Loss 1,686 946    
Collateral, Other [Member] | Real Estate Portfolio Segment[Member] | Owner Occupied Commercial [Member]        
Financing Receivable, before Allowance for Credit Loss 70 78    
Collateral, Other [Member] | Real Estate Portfolio Segment[Member] | One to Four Family [Member]        
Financing Receivable, before Allowance for Credit Loss 802 0    
Collateral, Other [Member] | Real Estate Portfolio Segment[Member] | Non-owner Occupied Commercial [Member]        
Financing Receivable, before Allowance for Credit Loss 937 875    
Collateral, Other [Member] | Consumer Portfolio Segment [Member]        
Financing Receivable, before Allowance for Credit Loss 0 755    
Collateral Pledged [Member]        
Financing Receivable, before Allowance for Credit Loss 111,771 119,295    
Financing Receivable, Allowance for Credit Loss 20,495 23,628    
Collateral Pledged [Member] | Commercial Real Estate Portfolio Segment [Member] | Commercial, Financial, and Agricultural Loans [Member]        
Financing Receivable, before Allowance for Credit Loss 77,356 70,755    
Financing Receivable, Allowance for Credit Loss 15,127 17,615    
Collateral Pledged [Member] | Real Estate Portfolio Segment[Member]        
Financing Receivable, before Allowance for Credit Loss 24,785 44,249    
Financing Receivable, Allowance for Credit Loss 4,627 5,258    
Collateral Pledged [Member] | Real Estate Portfolio Segment[Member] | Construction Loans [Member]        
Financing Receivable, before Allowance for Credit Loss 9,630 3,536    
Financing Receivable, Allowance for Credit Loss 741 0    
Collateral Pledged [Member] | Real Estate Portfolio Segment[Member] | Owner Occupied Commercial [Member]        
Financing Receivable, before Allowance for Credit Loss 12,513 25,013    
Financing Receivable, Allowance for Credit Loss 1,723 2,890    
Collateral Pledged [Member] | Real Estate Portfolio Segment[Member] | One to Four Family [Member]        
Financing Receivable, before Allowance for Credit Loss 6,170 3,828    
Financing Receivable, Allowance for Credit Loss 1,581 287    
Collateral Pledged [Member] | Real Estate Portfolio Segment[Member] | Non-owner Occupied Commercial [Member]        
Financing Receivable, before Allowance for Credit Loss 6,102 15,408    
Financing Receivable, Allowance for Credit Loss 1,323 2,081    
Collateral Pledged [Member] | Consumer Portfolio Segment [Member]        
Financing Receivable, before Allowance for Credit Loss 0 755    
Financing Receivable, Allowance for Credit Loss $ 0 $ 755