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Held to Maturity Debt Securities - Narrative (Details)
 12 Months Ended
Dec. 31, 2025
USD ($)
numberOfPosition
Dec. 31, 2024
USD ($)
numberOfPosition
Dec. 31, 2023
USD ($)
Schedule of Held-to-maturity Securities [Line Items]      
Accrued interest on held to maturity debt securities $ 2,600,000 $ 2,900,000  
Debt Securities, Held-to-Maturity, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration] Accrued interest receivable Accrued interest receivable  
Held to maturity securities at carrying value $ 240,700,000 $ 269,600,000  
Recognized gain on calls of securities held to maturity portfolio 27,000 0 $ 45,000
Recognized loss on calls of securities held to maturity portfolio 0 1,200 15,000
Proceeds from calls of held to maturity securities 11,700,000 5,500,000 11,600,000
Sales of securities from held to maturity debt securities $ 0 $ 0 $ 0
Number of securities in an unrealized loss position | numberOfPosition 221 512  
AAA      
Schedule of Held-to-maturity Securities [Line Items]      
Total portfolio (as a percent) 17.00%    
AA      
Schedule of Held-to-maturity Securities [Line Items]      
Total portfolio (as a percent) 71.00%    
A      
Schedule of Held-to-maturity Securities [Line Items]      
Total portfolio (as a percent) 8.00%    
Fitch, A Rating Or Not Rated      
Schedule of Held-to-maturity Securities [Line Items]      
Total portfolio (as a percent) 4.00%