v3.26.1
Securities - Additional Information (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Debt and Equity Securities, FV-NI [Line Items]          
Debt securities held-to-maturity fair value $ 344,826   $ 344,826   $ 348,122
Acquired securities under merger combination 90,700   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 $ 0 $ 0  
US Treasury Securities [Member] | AA or Better [Member]          
Debt and Equity Securities, FV-NI [Line Items]          
Debt Securities, Percent 100.00%   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 $ 172,706   $ 172,706   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%   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%   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%   5.00%    
Collateralized Mortgage-Backed Securities [Member]          
Debt and Equity Securities, FV-NI [Line Items]          
Debt securities held-to-maturity fair value $ 148,358   $ 148,358   $ 151,105
Collateralized Mortgage-Backed Securities [Member] | AA [Member]          
Debt and Equity Securities, FV-NI [Line Items]          
Debt Securities, Percent 47.00%   47.00%    
Collateralized Mortgage-Backed Securities [Member] | AAA [Member]          
Debt and Equity Securities, FV-NI [Line Items]          
Debt Securities, Percent 38.00%   38.00%    
Collateralized Mortgage-Backed Securities [Member] | Unrated [Member]          
Debt and Equity Securities, FV-NI [Line Items]          
Debt Securities, Percent 15.00%   15.00%    
Reclassified From Available-for-sale Securities [Member]          
Debt and Equity Securities, FV-NI [Line Items]          
Debt securities held-to-maturity fair value $ 428,400   $ 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     $ 1,600