XML 81 R58.htm IDEA: XBRL DOCUMENT v3.25.0.1
Note 2 - Investment Securities (Details)
$ in Thousands
 3 Months Ended 12 Months Ended
Mar. 31, 2023
USD ($)
Dec. 31, 2024
USD ($)
item
security
state
location
issuer
Dec. 31, 2023
USD ($)
state
issuer
location
Dec. 31, 2022
USD ($)
Debt Securities, Available-for-Sale, Unrealized Loss Position [Line Items]        
Sale of securities portfolio       $ 111,400
Number of securities | security   671    
Aggregate losses of securities (as a percent)   9.73%    
Available-for-sale, unrealized loss positions, qualitative disclosure, number of positions | security   548    
Available-for-sale, unrealized loss positions, qualitative disclosure, number of positions, greater than or equal to one year | security   447    
Securities trading, at fair value   $ 83,529 $ 22,369  
Recognized trading gain (loss)   $ 1,600 0  
Number of charters owning municipal securities | item   4    
Public deposits and derivative liabilities        
Debt Securities, Available-for-Sale, Unrealized Loss Position [Line Items]        
Investment securities pledged   $ 188,200 117,800  
Asset Pledged as Collateral [Member] | First loss support to Freddie Mac in conjunction with the M-series securitization        
Debt Securities, Available-for-Sale, Unrealized Loss Position [Line Items]        
Interest rate swaps collateralized by investment securities   $ 74,000 $ 16,200  
General Obligation Bonds        
Debt Securities, Available-for-Sale, Unrealized Loss Position [Line Items]        
Number of issuers | issuer   79 82  
Other investments   $ 103,500 $ 99,400  
Number of states holding investments | state   18 18  
General Obligation Bonds | Aggregate Fair Value Exceeding 5 Million        
Debt Securities, Available-for-Sale, Unrealized Loss Position [Line Items]        
Number of states holding investments | state   9 8  
General Obligation Bonds | Aggregate Fair Value Exceeding 5 Million | Minimum        
Debt Securities, Available-for-Sale, Unrealized Loss Position [Line Items]        
Other investments   $ 5,000 $ 5,000  
Revenue Bonds        
Debt Securities, Available-for-Sale, Unrealized Loss Position [Line Items]        
Number of issuers | issuer   165 169  
Other investments   $ 828,000 $ 750,800  
Number of states holding investments | state   31 31  
Revenue Bonds | Aggregate Fair Value Exceeding 5 Million        
Debt Securities, Available-for-Sale, Unrealized Loss Position [Line Items]        
Number of states holding investments | state   13 15  
Revenue Bonds | Aggregate Fair Value Exceeding 5 Million | Minimum        
Debt Securities, Available-for-Sale, Unrealized Loss Position [Line Items]        
Other investments   $ 5,000 $ 5,000  
Revenue Bonds | Aggregate Book Or Market Value Exceeded 5% of The Company Equity        
Debt Securities, Available-for-Sale, Unrealized Loss Position [Line Items]        
Number of issuers | issuer   3    
Percentage threshold   5.00% 5.00%  
Revenue Bonds | Aggregate Book Or Market Value Exceeded 5% of The Company Equity | Ohio        
Debt Securities, Available-for-Sale, Unrealized Loss Position [Line Items]        
Number of issuers   2 2  
Revenue Bonds | Aggregate Book Or Market Value Exceeded 5% of The Company Equity | Wisconsin        
Debt Securities, Available-for-Sale, Unrealized Loss Position [Line Items]        
Number of issuers | location     1  
Corporate securities        
Debt Securities, Available-for-Sale, Unrealized Loss Position [Line Items]        
Provision for credit loss expense $ 989 $ (445) $ 989