v3.26.1
Note 4 - Allowance for Credit Losses on Loans - Modified Loans (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Modified in period $ 6,156 $ 5,375
Modified in period, percentage 0.28% 0.29%
Extended Maturity [Member]    
Modified in period $ 6,156 $ 5,375
Term extension (Month) 11 months 3 days 5 months 6 days
Payment Delay and Extended Maturity [Member]    
Modified in period $ 0 $ 0
Interest rate Reduction and Payment Delay [Member]    
Modified in period 0 0
Interest Rate Reduction, Payment Delay, and Term Extension [Member]    
Modified in period 0 0
Principal Forgiveness, Interest Rate Reduction, Payment Delay, and Term Extension [Member]    
Modified in period 0 0
Commercial and Industrial Portfolio Segment [Member]    
Modified in period $ 6,156 $ 5,375
Modified in period, percentage 0.59% 0.67%
Commercial and Industrial Portfolio Segment [Member] | Extended Maturity [Member]    
Modified in period $ 6,156 $ 5,375
Term extension (Month) 11 months 3 days 5 months 6 days
Commercial and Industrial Portfolio Segment [Member] | Payment Delay and Extended Maturity [Member]    
Modified in period $ 0 $ 0
Commercial and Industrial Portfolio Segment [Member] | Interest rate Reduction and Payment Delay [Member]    
Modified in period 0 0
Commercial and Industrial Portfolio Segment [Member] | Interest Rate Reduction, Payment Delay, and Term Extension [Member]    
Modified in period 0 0
Commercial and Industrial Portfolio Segment [Member] | Principal Forgiveness, Interest Rate Reduction, Payment Delay, and Term Extension [Member]    
Modified in period 0 0
Construction Portfolio Segment [Member]    
Modified in period $ 0 $ 0
Modified in period, percentage 0.00% 0.00%
Construction Portfolio Segment [Member] | Extended Maturity [Member]    
Modified in period $ 0 $ 0
Construction Portfolio Segment [Member] | Payment Delay and Extended Maturity [Member]    
Modified in period 0 0
Construction Portfolio Segment [Member] | Interest rate Reduction and Payment Delay [Member]    
Modified in period 0 0
Construction Portfolio Segment [Member] | Interest Rate Reduction, Payment Delay, and Term Extension [Member]    
Modified in period 0 0
Construction Portfolio Segment [Member] | Principal Forgiveness, Interest Rate Reduction, Payment Delay, and Term Extension [Member]    
Modified in period 0 0
Residential Portfolio Segment [Member]    
Modified in period $ 0 $ 0
Modified in period, percentage 0.00% 0.00%
Residential Portfolio Segment [Member] | Extended Maturity [Member]    
Modified in period $ 0 $ 0
Residential Portfolio Segment [Member] | Payment Delay and Extended Maturity [Member]    
Modified in period 0 0
Residential Portfolio Segment [Member] | Interest rate Reduction and Payment Delay [Member]    
Modified in period 0 0
Residential Portfolio Segment [Member] | Interest Rate Reduction, Payment Delay, and Term Extension [Member]    
Modified in period 0 0
Residential Portfolio Segment [Member] | Principal Forgiveness, Interest Rate Reduction, Payment Delay, and Term Extension [Member]    
Modified in period 0 0
Commercial Real Estate Portfolio Segment [Member]    
Modified in period $ 0 $ 0
Modified in period, percentage 0.00% 0.00%
Commercial Real Estate Portfolio Segment [Member] | Extended Maturity [Member]    
Modified in period $ 0 $ 0
Commercial Real Estate Portfolio Segment [Member] | Payment Delay and Extended Maturity [Member]    
Modified in period 0 0
Commercial Real Estate Portfolio Segment [Member] | Interest rate Reduction and Payment Delay [Member]    
Modified in period 0 0
Commercial Real Estate Portfolio Segment [Member] | Interest Rate Reduction, Payment Delay, and Term Extension [Member]    
Modified in period 0 0
Commercial Real Estate Portfolio Segment [Member] | Principal Forgiveness, Interest Rate Reduction, Payment Delay, and Term Extension [Member]    
Modified in period 0 0
Consumer Portfolio Segment [Member]    
Modified in period $ 0 $ 0
Modified in period, percentage 0.00% 0.00%
Consumer Portfolio Segment [Member] | Extended Maturity [Member]    
Modified in period $ 0 $ 0
Consumer Portfolio Segment [Member] | Payment Delay and Extended Maturity [Member]    
Modified in period 0 0
Consumer Portfolio Segment [Member] | Interest rate Reduction and Payment Delay [Member]    
Modified in period 0 0
Consumer Portfolio Segment [Member] | Interest Rate Reduction, Payment Delay, and Term Extension [Member]    
Modified in period 0 0
Consumer Portfolio Segment [Member] | Principal Forgiveness, Interest Rate Reduction, Payment Delay, and Term Extension [Member]    
Modified in period $ 0 $ 0