v3.26.1
Investment Securities - Narrative (Details)
$ in Thousands
6 Months Ended
Jun. 30, 2026
USD ($)
security
Jun. 30, 2025
USD ($)
Dec. 31, 2025
USD ($)
security
Investment Securities      
Investment securities total $ 1,400,000   $ 1,200,000
Held-to-maturity securities 758,223   651,732
Debt Securities, Available-for-Sale, Excluding Accrued Interest 585,533   $ 528,639
Available-for-sale securities fair value 145,500    
Purchases of available-for-sale securities 154,341 $ 160,543  
Maturities and paydowns of available-for-sale securities 61,757 74,609  
Sales of available-for-sale securities $ 176,406 0  
Number of securities | security 90   84
Accrued interest receivable from available-for-sale investment securities $ 1,700   $ 1,900
Purchases of held-to-maturity securities 202,218 260,257  
Maturities and paydowns of held-to-maturity securities $ 96,855 $ 76,710  
Number of held-to-maturity securities in unrealized loss positions | security 130   92
Held-to-maturity investment securities pledged as collateral $ 589,600   $ 604,000
Held-to-maturity investment securities held as collateral 0   0
Accrued interest receivable from held-to-maturity investment securities 2,100   1,400
Other securities investments with no contractual maturity      
Investment Securities      
Securities with no stated contractual date, fair value 300    
Securities with no stated contractual date, amortized cost 300    
Vista securities      
Investment Securities      
Sales of available-for-sale securities 176,400    
Asset Pledged as Collateral      
Investment Securities      
Debt Securities, Available-for-Sale, Excluding Accrued Interest 0   0
Asset Pledged as Collateral | Federal Funds Purchased      
Investment Securities      
Debt Securities, Available-for-Sale, Excluding Accrued Interest $ 206,100   $ 102,400