v3.26.1
Investment Securities (Narrative) (Details)
 3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2026
USD ($)
Security
Jun. 30, 2025
USD ($)
Jun. 30, 2026
USD ($)
Security
Jun. 30, 2025
USD ($)
Dec. 31, 2025
USD ($)
Security
Jan. 01, 2025
shares
Schedule of Investments [Line Items]            
Number of securities in unrealized losses less than twelve months category | Security 11   11   0  
Number of securities in unrealized losses twelve months or more category | Security 152   152   164  
Number of securities in unrealized losses | Security 163   163   164  
Fair value in an unrealized loss position $ 52,713,000   $ 52,713,000   $ 55,016,000  
Available for sale securities sold 0 $ 0 0 $ 0    
Accrued interest receivable on available-for-sale debt securities $ 239,000   $ 239,000   $ 248,000  
Financing Receivable, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration] Interest Receivable   Interest Receivable   Interest Receivable  
Proceeds from sale of shares         $ 223,000,000  
Equity Securities [Member]            
Schedule of Investments [Line Items]            
Available for sale securities sold $ 0 0 $ 0 0    
Federal Home Loan Mortgage Corporation [Member] | Equity Securities [Member]            
Schedule of Investments [Line Items]            
Equity securities common stock shares owned | shares           22,368
Unrealized gain on equity securities   $ 65,000,000   $ 111,000,000    
Municipal Bonds [Member]            
Schedule of Investments [Line Items]            
Fair value in an unrealized loss position $ 32,430,000   $ 32,430,000   $ 32,794,000  
Municipal Bonds [Member] | Securities Pledged As Collateral Agreement With Federal Reserve Bank [Member]            
Schedule of Investments [Line Items]            
Investment owned balance, positions | Security 0   0   0  
Municipal Bonds [Member] | Securities Pledged As Collateral Agreement With Federal Home Loan Bank of New YorK [Member]            
Schedule of Investments [Line Items]            
Investment owned balance, positions | Security 0   0   0  
Municipal Bonds [Member] | Securities Pledged As Collateral For Customer Deposits [Member]            
Schedule of Investments [Line Items]            
Investment owned balance, positions | Security 17   17   16  
Investment owned, at cost $ 5,100,000   $ 5,100,000   $ 4,700,000  
Investment owned, at fair value $ 4,100,000   $ 4,100,000   $ 3,600,000