v3.26.1
Securities - Additional Information (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Dec. 31, 2025
Debt and Equity Securities, FV-NI [Line Items]      
Debt securities held-to-maturity fair value $ 345,440   $ 348,122
Acquired securities under merger combination 90,700    
Sale of securities to pay down wholesale funding 78,900    
Net increase from security transaction 11,800    
Allowance for credit loss $ 0 $ 0  
US Treasury Securities [Member] | AA or Better [Member]      
Debt and Equity Securities, FV-NI [Line Items]      
Debt Securities, Percent 100.00%    
US States and Political Subdivisions Debt Securities [Member]      
Debt and Equity Securities, FV-NI [Line Items]      
Debt securities held-to-maturity fair value $ 172,787   174,395
US States and Political Subdivisions Debt Securities [Member] | A Rated [Member]      
Debt and Equity Securities, FV-NI [Line Items]      
Debt Securities, Percent 10.00%    
US States and Political Subdivisions Debt Securities [Member] | AA or Better [Member]      
Debt and Equity Securities, FV-NI [Line Items]      
Debt Securities, Percent 85.00%    
US States and Political Subdivisions Debt Securities [Member] | Unrated [Member]      
Debt and Equity Securities, FV-NI [Line Items]      
Debt Securities, Percent 5.00%    
Collateralized Mortgage-Backed Securities [Member]      
Debt and Equity Securities, FV-NI [Line Items]      
Debt securities held-to-maturity fair value $ 149,667   $ 151,105
Collateralized Mortgage-Backed Securities [Member] | AA [Member]      
Debt and Equity Securities, FV-NI [Line Items]      
Debt Securities, Percent 48.00%    
Collateralized Mortgage-Backed Securities [Member] | AAA [Member]      
Debt and Equity Securities, FV-NI [Line Items]      
Debt Securities, Percent 39.00%    
Collateralized Mortgage-Backed Securities [Member] | Unrated [Member]      
Debt and Equity Securities, FV-NI [Line Items]      
Debt Securities, Percent 13.00%    
Reclassified From Available-for-sale Securities [Member]      
Debt and Equity Securities, FV-NI [Line Items]      
Debt securities held-to-maturity fair value $ 428,400    
OCI, Debt Securities, Available-for-Sale, Transfer to Held-to-Maturity, Adjustment from AOCI for Amortization of Gain (Loss), after Tax 2,700    
OCI, Debt Securities, Available-for-Sale, Transfer to Held-to-Maturity, Adjustment from AOCI Unamortized, After Tax $ 1,700