Quarterly report pursuant to Section 13 or 15(d)

Note 5 - Loans (Details Textual)

v3.20.1
Note 5 - Loans (Details Textual)
3 Months Ended 12 Months Ended
Mar. 31, 2020
USD ($)
Mar. 31, 2019
USD ($)
Dec. 31, 2019
USD ($)
Dec. 31, 2018
USD ($)
Provision for Loan and Lease Losses, Total $ 85,414,000 $ 70,207,000 $ 76,584,000 [1] $ 68,600,000
Financing Receivable, Number of Payment Deferrals 730      
Financing Receivable, Payment Deferral, Recorded Investment $ 574,700,000      
Financing Receivable, Troubled Debt Restructuring 2,400,000 12,300,000 3,300,000  
Financing Receivable, Modifications, Recorded Investment, Accruing Interest 2,400,000 2,700,000 3,300,000  
Financing Receivables, Impaired, Troubled Debt Restructuring, Write-down $ 223,000 $ 2,600,000 $ 929,000  
Financing Receivable, Troubled Debt Restructuring, Subsequent Default, Number of Contracts 0      
Financing Receivable, Modifications, Number of Contracts 1      
Commercial Portfolio Segment [Member]        
Financing Receivable, Troubled Debt Restructuring $ 350,000      
Financing Receivable, Troubled Debt Restructuring, Subsequent Default, Number of Contracts   2    
Financing Receivable, Troubled Debt Restructuring, Subsequent Default   $ 325,000    
Financing Receivable, Modifications, Number of Contracts 1      
Principal Only Deferrals [Member]        
Financing Receivable, Number of Payment Deferrals 720      
Financing Receivable, Payment Deferral, Recorded Investment $ 547,800,000      
Interest Only Deferral [Member]        
Financing Receivable, Number of Payment Deferrals 5      
Financing Receivable, Payment Deferral, Recorded Investment $ 18,300,000      
Principal and Interest Deferrals [Member]        
Financing Receivable, Number of Payment Deferrals 5      
Financing Receivable, Payment Deferral, Recorded Investment $ 8,600,000      
COVID-19 [Member]        
Provision for Loan and Lease Losses, Total $ 6,700,000      
[1] derived from audited financial statements.