v3.24.3
Loans and Allowance for Credit Losses on Loans - Loans Held for Investment by Portfolio Segment (Details) - USD ($)
Sep. 30, 2024
Dec. 31, 2023
Sep. 30, 2023
Dec. 31, 2022
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Total $ 22,381,242,000 $ 20,420,816,000    
Unearned income (net of direct origination costs) (87,071,000) (80,258,000)    
Total loans held for investment 22,294,171,000 20,340,558,000    
Allowance for credit losses on loans (273,143,000) (249,973,000) $ (244,902,000) $ (253,469,000)
Loans held for investment, net 22,021,028,000 20,090,585,000    
Loans held for sale 9,022,000 44,105,000    
Interest receivable 114,800,000 118,100,000    
Commercial        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Total 10,967,807,000 10,410,766,000    
Allowance for credit losses on loans (205,471,000) (171,437,000) (168,818,000) (185,303,000)
Loans held for sale 9,022,000 43,399,000    
Mortgage finance        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Total 5,529,659,000 3,978,328,000    
Allowance for credit losses on loans (5,463,000) (4,173,000) (6,307,000) (10,745,000)
Commercial real estate        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Total 5,314,814,000 5,500,774,000    
Allowance for credit losses on loans (59,291,000) (71,829,000) (67,203,000) (54,268,000)
Consumer        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Total 568,962,000 530,948,000    
Allowance for credit losses on loans (2,918,000) (2,534,000) $ (2,574,000) $ (3,153,000)
Mortgage Loans        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Loans held for sale $ 0 $ 706,000