v3.26.1
Note 9 - Fair Value Measurements - Schedule of Schedule of Financial Assets and Liabilities on a Recurring and Non-recurring Basis (Details) - Fair Value, Inputs, Level 3 [Member]
Jun. 30, 2026
Dec. 31, 2025
Minimum [Member] | Interest Rate Lock Commitments [Member] | Fair Value, Recurring [Member] | Valuation, Market Approach [Member] | Pull-through Expectations Rate [Member]    
Interest rate lock commitments with customers 0.80  
Minimum [Member] | Individual Forward Sale Commitments With Investors [Member] | Fair Value, Recurring [Member] | Valuation, Market Approach [Member] | Pull-through Expectations Rate [Member]    
Interest rate lock commitments with customers 0.80  
Minimum [Member] | Collateral Dependent Loans [Member] | Fair Value, Nonrecurring [Member] | Fair Value of Underlying Collateral [Member] | Measurement Input, Discount Rate [Member]    
Collateral dependent loans 0  
Minimum [Member] | Mortgage Servicing Rights [Member] | Fair Value, Nonrecurring [Member] | Industry Sources [Member] | Measurement Input, Prepayment Rate [Member]    
Collateral dependent loans 0  
Maximum [Member] | Interest Rate Lock Commitments [Member] | Fair Value, Recurring [Member] | Valuation, Market Approach [Member] | Pull-through Expectations Rate [Member]    
Interest rate lock commitments with customers 0.99  
Maximum [Member] | Individual Forward Sale Commitments With Investors [Member] | Fair Value, Recurring [Member] | Valuation, Market Approach [Member] | Pull-through Expectations Rate [Member]    
Interest rate lock commitments with customers 0.99  
Maximum [Member] | Collateral Dependent Loans [Member] | Fair Value, Nonrecurring [Member] | Fair Value of Underlying Collateral [Member] | Measurement Input, Discount Rate [Member]    
Collateral dependent loans 0.25  
Maximum [Member] | Mortgage Servicing Rights [Member] | Fair Value, Nonrecurring [Member] | Industry Sources [Member] | Measurement Input, Prepayment Rate [Member]    
Collateral dependent loans 0.50  
Weighted Average [Member] | Interest Rate Lock Commitments [Member] | Fair Value, Recurring [Member] | Valuation, Market Approach [Member] | Pull-through Expectations Rate [Member]    
Interest rate lock commitments with customers 0.94 0.937
Weighted Average [Member] | Individual Forward Sale Commitments With Investors [Member] | Fair Value, Recurring [Member] | Valuation, Market Approach [Member] | Pull-through Expectations Rate [Member]    
Interest rate lock commitments with customers 0.94 0.937
Weighted Average [Member] | Collateral Dependent Loans [Member] | Fair Value, Nonrecurring [Member] | Fair Value of Underlying Collateral [Member] | Measurement Input, Discount Rate [Member]    
Collateral dependent loans 0.15 0
Weighted Average [Member] | Mortgage Servicing Rights [Member] | Fair Value, Nonrecurring [Member] | Industry Sources [Member] | Measurement Input, Prepayment Rate [Member]    
Collateral dependent loans 0.079 0.085