Quarterly report pursuant to Section 13 or 15(d)

Note 5 - Loans (Details Textual)

v3.22.2.2
Note 5 - Loans (Details Textual)
3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2022
USD ($)
Sep. 30, 2021
USD ($)
Sep. 30, 2022
USD ($)
Sep. 30, 2021
USD ($)
Dec. 31, 2021
USD ($)
Jun. 30, 2021
USD ($)
May 28, 2021
USD ($)
Number of Loans Funded, Payroll Protection Plan             7,400
Amount of Loans Funded, Payment Protection Plan             $ 1,500,000,000
Provision for Loan and Lease Losses $ 15,603,000 $ 5,963,000 $ 30,472,000 $ 23,066,000      
Loans and Leases Receivable, Gross 11,278,614,000   11,278,614,000   $ 9,532,934,000    
Allowance for Loan and Lease Losses, Unfunded Commitments     1,900,000   1,300,000    
Financing Receivable, Credit Loss, Expense (Reversal) 15,603,000 5,963,000 30,472,000 23,066,000      
Financing Receivable, Troubled Debt Restructuring 2,000,000.0   2,000,000.0   2,600,000 $ 2,900,000  
Financing Receivable, Modifications, Recorded Investment, Accruing Interest $ 236,000 $ 437,000 $ 236,000 $ 437,000 431,000    
Financing Receivable, Troubled Debt Restructuring, Subsequent Default, Number of Contracts 0 0 0 0      
Paycheck Protection Program (PPP) Loans [Member]              
Financing Receivable, Unamortized Loan Cost (Fee) and Purchase Premium (Discount), Total $ 138,000   $ 138,000   7,200,000    
Provision for Loan and Lease Losses 400,000 $ 5,200,000 7,600,000 $ 22,300,000      
Loans and Leases Receivable, Gross 7,200,000   7,200,000   $ 230,200,000    
Unfunded Loan Commitment [Member]              
Financing Receivable, Credit Loss, Expense (Reversal) $ 329,000 $ 300,000 $ 629,000 $ 800,000