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Securities - Narrative (Details) - USD ($)
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Debt Securities, Available-for-sale [Line Items]      
Proceeds from sale of available-for-sale debt securities, including legacy securities $ 1,800,000,000 $ 217,000,000.0  
Gross losses from sale of securities   12,000,000.0  
Unrealized losses on mortgage backed securities of government sponsored entities 150,385,000 211,338,000  
Fair value of securities in unrealized loss position 2,040,898,000 1,696,572,000  
Held-to-maturity securities, allowance for credit loss 0    
Federal home loan bank and federal reserve stock recorded in other assets 135,600,000 77,300,000  
Accrued interest receivable on AFS debt securities 24,500,000 9,200,000  
Accrued interest receivable on HTM debt securities $ 1,000,000.0 $ 1,000,000.0  
Debt Securities, Available-for-Sale, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration] Other assets Other assets  
Debt Securities, Held-to-Maturity, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration] Other assets Other assets  
Asset Pledged as Collateral      
Debt Securities, Available-for-sale [Line Items]      
Fair value of debt securities pledged as collateral $ 1,800,000,000    
Other debt securities      
Debt Securities, Available-for-sale [Line Items]      
Proceeds from sale of available-for-sale debt securities, including legacy securities 19,800,000   $ 91,300,000
Gross losses from sale of securities 1,000,000.0   3,000,000.0
Gross gains from sale of securities     25,000
Unrealized losses on mortgage backed securities of government sponsored entities 576,000    
Fair value of securities in unrealized loss position 132,345,000    
CRA - qualified debt securities      
Debt Securities, Available-for-sale [Line Items]      
Gross losses from sale of securities   $ 100,000  
Gross gains from sale of securities 400,000   42,000
Investment in mutual fund carried at fair value 13,900,000 13,500,000  
U.S. Treasury securities and obligations of U.S. government agencies      
Debt Securities, Available-for-sale [Line Items]      
Unrealized losses on mortgage backed securities of government sponsored entities 451,000 522,000  
Fair value of securities in unrealized loss position 35,778,000 22,885,000  
Allowance for credit losses on AFS debt securities 0    
Mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities      
Debt Securities, Available-for-sale [Line Items]      
Unrealized losses on mortgage backed securities of government sponsored entities 141,300,000    
Fair value of securities in unrealized loss position 1,300,000,000    
Allowance for credit losses on AFS debt securities 0    
Private mortgage-backed securities and collateralized mortgage obligations      
Debt Securities, Available-for-sale [Line Items]      
Unrealized losses on mortgage backed securities of government sponsored entities 5,010,000 8,382,000  
Fair value of securities in unrealized loss position 77,798,000 108,420,000  
Allowance for credit losses on AFS debt securities $ 0    
Average credit support percentage 22.00%    
CLOs      
Debt Securities, Available-for-sale [Line Items]      
Unrealized losses on mortgage backed securities of government sponsored entities $ 512,000 166,000  
Fair value of securities in unrealized loss position 249,934,000 51,006,000  
Allowance for credit losses on AFS debt securities $ 0    
CLOs | Standard & Poor's, AAA Rating      
Debt Securities, Available-for-sale [Line Items]      
Number of positions held, percentage of total 38.00%    
CLOs | Standard & Poor's, AA Rating      
Debt Securities, Available-for-sale [Line Items]      
Number of positions held, percentage of total 24.00%    
Obligations of state and political subdivisions      
Debt Securities, Available-for-sale [Line Items]      
Unrealized losses on mortgage backed securities of government sponsored entities $ 2,520,000 1,449,000  
Fair value of securities in unrealized loss position 249,898,000 $ 5,690,000  
Allowance for credit losses on AFS debt securities $ 0    
Professional Holding Corp.      
Debt Securities, Available-for-sale [Line Items]      
Proceeds from sale of available-for-sale debt securities, including legacy securities     $ 22,100,000