Quarterly report pursuant to Section 13 or 15(d)

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

v3.23.3
Note 5 - Loans - Summary of Collateral Types (Details) - USD ($)
Sep. 30, 2023
Jun. 30, 2023
Dec. 31, 2022
Sep. 30, 2022
Jun. 30, 2022
Dec. 31, 2021
Financing receivable, gross $ 11,641,130,000   $ 11,687,968,000 [1]      
Financing Receivable, Allowance for Credit Loss 152,247,000 $ 152,272,000 146,297,000 [1] $ 140,967,000 $ 128,387,000 $ 116,660,000
Commercial Real Estate Portfolio Segment [Member]            
Financing receivable, gross 2,890,535,000   3,145,317,000      
Real Estate Portfolio Segment[Member]            
Financing receivable, gross 7,173,907,000   6,943,861,000      
Real Estate Portfolio Segment[Member] | Construction Loans [Member]            
Financing receivable, gross 1,509,937,000   1,532,388,000      
Financing Receivable, Allowance for Credit Loss 38,023,000 40,443,000 42,889,000 40,016,000 35,992,000 26,994,000
Real Estate Portfolio Segment[Member] | Owner Occupied Commercial [Member]            
Financing receivable, gross 2,237,684,000   2,199,280,000      
Real Estate Portfolio Segment[Member] | One to Four Family [Member]            
Financing receivable, gross 1,170,099,000   1,146,831,000      
Real Estate Portfolio Segment[Member] | Other Mortgages [Member]            
Financing receivable, gross 3,766,124,000   3,597,750,000      
Consumer Portfolio Segment [Member]            
Financing receivable, gross 66,751,000   66,402,000      
Financing Receivable, Allowance for Credit Loss 1,989,000 $ 2,127,000 $ 1,926,000 $ 2,074,000 $ 1,992,000 $ 1,968,000
Real Estate [Member]            
Financing receivable, gross 49,563,000          
Real Estate [Member] | Commercial Real Estate Portfolio Segment [Member]            
Financing receivable, gross 20,457,000          
Real Estate [Member] | Real Estate Portfolio Segment[Member]            
Financing receivable, gross 28,906,000          
Real Estate [Member] | Real Estate Portfolio Segment[Member] | Construction Loans [Member]            
Financing receivable, gross 200,000          
Real Estate [Member] | Real Estate Portfolio Segment[Member] | Owner Occupied Commercial [Member]            
Financing receivable, gross 12,029,000          
Real Estate [Member] | Real Estate Portfolio Segment[Member] | One to Four Family [Member]            
Financing receivable, gross 10,933,000          
Real Estate [Member] | Real Estate Portfolio Segment[Member] | Other Mortgages [Member]            
Financing receivable, gross 5,944,000          
Real Estate [Member] | Consumer Portfolio Segment [Member]            
Financing receivable, gross 0          
Collateral, Accounts Receivable [Member]            
Financing receivable, gross 10,686,000          
Collateral, Accounts Receivable [Member] | Commercial Real Estate Portfolio Segment [Member]            
Financing receivable, gross 10,686,000          
Collateral, Accounts Receivable [Member] | Real Estate Portfolio Segment[Member]            
Financing receivable, gross 0          
Collateral, Accounts Receivable [Member] | Real Estate Portfolio Segment[Member] | Construction Loans [Member]            
Financing receivable, gross 0          
Collateral, Accounts Receivable [Member] | Real Estate Portfolio Segment[Member] | Owner Occupied Commercial [Member]            
Financing receivable, gross 0          
Collateral, Accounts Receivable [Member] | Real Estate Portfolio Segment[Member] | One to Four Family [Member]            
Financing receivable, gross 0          
Collateral, Accounts Receivable [Member] | Real Estate Portfolio Segment[Member] | Other Mortgages [Member]            
Financing receivable, gross 0          
Collateral, Accounts Receivable [Member] | Consumer Portfolio Segment [Member]            
Financing receivable, gross 0          
Equipment [Member]            
Financing receivable, gross 830,000          
Equipment [Member] | Commercial Real Estate Portfolio Segment [Member]            
Financing receivable, gross 830,000          
Equipment [Member] | Real Estate Portfolio Segment[Member]            
Financing receivable, gross 0          
Equipment [Member] | Real Estate Portfolio Segment[Member] | Construction Loans [Member]            
Financing receivable, gross 0          
Equipment [Member] | Real Estate Portfolio Segment[Member] | Owner Occupied Commercial [Member]            
Financing receivable, gross 0          
Equipment [Member] | Real Estate Portfolio Segment[Member] | One to Four Family [Member]            
Financing receivable, gross 0          
Equipment [Member] | Real Estate Portfolio Segment[Member] | Other Mortgages [Member]            
Financing receivable, gross 0          
Equipment [Member] | Consumer Portfolio Segment [Member]            
Financing receivable, gross 0          
Collateral, Other [Member]            
Financing receivable, gross 25,620,000          
Collateral, Other [Member] | Commercial Real Estate Portfolio Segment [Member]            
Financing receivable, gross 23,917,000          
Collateral, Other [Member] | Real Estate Portfolio Segment[Member]            
Financing receivable, gross 709,000          
Collateral, Other [Member] | Real Estate Portfolio Segment[Member] | Construction Loans [Member]            
Financing receivable, gross 994,000          
Collateral, Other [Member] | Real Estate Portfolio Segment[Member] | Owner Occupied Commercial [Member]            
Financing receivable, gross 709,000          
Collateral, Other [Member] | Real Estate Portfolio Segment[Member] | One to Four Family [Member]            
Financing receivable, gross 0          
Collateral, Other [Member] | Real Estate Portfolio Segment[Member] | Other Mortgages [Member]            
Financing receivable, gross 0          
Collateral, Other [Member] | Consumer Portfolio Segment [Member]            
Financing receivable, gross 0          
Collateral Pledged [Member]            
Financing receivable, gross 86,699,000          
Financing Receivable, Allowance for Credit Loss 17,129,000          
Collateral Pledged [Member] | Commercial Real Estate Portfolio Segment [Member]            
Financing receivable, gross 55,890,000          
Financing Receivable, Allowance for Credit Loss 15,025,000          
Collateral Pledged [Member] | Real Estate Portfolio Segment[Member]            
Financing receivable, gross 29,615,000          
Financing Receivable, Allowance for Credit Loss 2,014,000          
Collateral Pledged [Member] | Real Estate Portfolio Segment[Member] | Construction Loans [Member]            
Financing receivable, gross 1,194,000          
Financing Receivable, Allowance for Credit Loss 90,000          
Collateral Pledged [Member] | Real Estate Portfolio Segment[Member] | Owner Occupied Commercial [Member]            
Financing receivable, gross 12,738,000          
Financing Receivable, Allowance for Credit Loss 1,530          
Collateral Pledged [Member] | Real Estate Portfolio Segment[Member] | One to Four Family [Member]            
Financing receivable, gross 10,933,000          
Financing Receivable, Allowance for Credit Loss 73,000          
Collateral Pledged [Member] | Real Estate Portfolio Segment[Member] | Other Mortgages [Member]            
Financing receivable, gross 5,944,000          
Financing Receivable, Allowance for Credit Loss 411,000          
Collateral Pledged [Member] | Consumer Portfolio Segment [Member]            
Financing receivable, gross 0          
Financing Receivable, Allowance for Credit Loss $ 0          
[1] derived from audited financial statements.