v3.26.1
Note 7 - Other Borrowings (Details Textual) - USD ($)
$ in Thousands
Dec. 24, 2025
Jan. 14, 2022
Dec. 15, 2021
Jun. 30, 2026
Dec. 31, 2025
Long-Term Federal Home Loan Bank Advances       $ 305,322 $ 326,221
Line of Credit Facility, Maximum Borrowing Capacity       1,160,000  
Line of Credit Facility, Remaining Borrowing Capacity       847,000  
Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration]     Secured Overnight Financing Rate (SOFR) [Member]    
Subordinated Notes [Member]          
Subordinated Debt, Principal Amount   $ 15,000 $ 75,000    
Subordinated Borrowing, Interest Rate     3.25%    
Subordinated Borrowing, Redemption Price, Percentage of Principal Amount     100.00%    
Debt Instrument, Basis Spread on Variable Rate     2.12%    
Proceeds Injected, Increase to Equity Capital From Issuance of Subordinated Long-term Debt   $ 15,000 $ 70,000    
Term Note [Member]          
Debt Instrument, Face Amount $ 30,000        
Debt Instrument, Interest Rate, Stated Percentage 1.70%        
Debt Instrument, Periodic Payment, Principal $ 2,500        
Term Note [Member] | Minimum [Member]          
Debt Instrument, Basis Spread on Variable Rate 0.00%        
Federal Home Loan Bank of Indianapolis [Member] | Bullet Advances [member]          
Long-Term Federal Home Loan Bank Advances       $ 280,000 $ 300,000
Federal Home Loan Bank of Indianapolis [Member] | Bullet Advances [member] | Minimum [Member]          
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Interest Rate at Period End       0.95% 0.90%
Federal Home Loan Bank of Indianapolis [Member] | Bullet Advances [member] | Maximum [Member]          
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Interest Rate at Period End       4.50% 4.50%
Federal Home Loan Bank of Indianapolis [Member] | Bullet Advances [member] | Weighted Average [Member]          
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Interest Rate at Period End       3.41% 3.27%
Federal Home Loan Bank of Indianapolis [Member] | Amortizing Advances [Member]          
Long-Term Federal Home Loan Bank Advances       $ 25,300 $ 26,200
Federal Home Loan Bank of Indianapolis [Member] | Amortizing Advances [Member] | Weighted Average [Member]          
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Interest Rate at Period End       2.52% 2.52%