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Summary of Significant Accounting Policies - Narrative (Details)
$ in Thousands
 12 Months Ended
Jun. 01, 2023
USD ($)
board_seat
Dec. 31, 2024
USD ($)
Dec. 31, 2023
USD ($)
Dec. 31, 2022
USD ($)
Basis Of Presentation [Line Items]        
Settlement of acquired debt   $ 0 $ 31,109 $ 0
Restricted cash   $ 34,600 $ 69,700  
Loan agreement, repayment performance, reasonable period of time   6 months   6 months
Troubled debt restructurings, extension of the maturity, term       1 year
Short-term deferrals, term       12 months
Financing receivable, allowance for credit losses, period beyond a reasonable forecast can be made   2 years    
Financing receivable, allowance for credit losses, historical rates period   1 year    
Award requisite service period   3 years    
Investment Program, Proportional Amortization Method, Elected, Income Tax Credit and Other Income Tax Benefit, before Amortization, Statement of Income or Comprehensive Income [Extensible Enumeration]   Income tax expense Income tax expense Income tax expense
Investment Program, Proportional Amortization Method, Applied, Amortization Expense, Statement of Income or Comprehensive Income [Extensible Enumeration]   Income tax expense Income tax expense Income tax expense
Investment Program, Proportional Amortization Method, Applied, Amortization Expense, Statement of Cash Flows [Extensible Enumeration]   Increase (decrease) in other liabilities, Increase (Decrease) in Prepaid Expense and Other Assets Increase (decrease) in other liabilities, Increase (Decrease) in Prepaid Expense and Other Assets Increase (decrease) in other liabilities, Increase (Decrease) in Prepaid Expense and Other Assets
Investment Program, Proportional Amortization Method, Elected, Income Tax Credit and Other Income Tax Benefit, before Amortization, Statement of Cash Flows [Extensible Enumeration]   Increase (decrease) in other liabilities, Increase (Decrease) in Prepaid Expense and Other Assets Increase (decrease) in other liabilities, Increase (Decrease) in Prepaid Expense and Other Assets Increase (decrease) in other liabilities, Increase (Decrease) in Prepaid Expense and Other Assets
LIHTC tax credits and other tax benefits   $ 80,800 $ 81,600 $ 37,500
LIHTC amortization expense   $ 60,700 63,900 $ 30,300
CDI        
Basis Of Presentation [Line Items]        
Finite-lived intangible asset, useful life   10 years    
Other non-interest expense        
Basis Of Presentation [Line Items]        
Fair value adjustment on derivative   $ 8,700 $ 3,900  
Minimum        
Basis Of Presentation [Line Items]        
Other intangible assets, useful life   5 years    
Minimum | Buildings and improvements        
Basis Of Presentation [Line Items]        
Premises and equipment, useful life   10 years    
Minimum | Furniture, equipment and software        
Basis Of Presentation [Line Items]        
Premises and equipment, useful life   3 years    
Minimum | Software and Software Development Costs        
Basis Of Presentation [Line Items]        
Premises and equipment, useful life   3 years    
Maximum        
Basis Of Presentation [Line Items]        
Other intangible assets, useful life   10 years    
Maximum | Buildings and improvements        
Basis Of Presentation [Line Items]        
Premises and equipment, useful life   40 years    
Maximum | Furniture, equipment and software        
Basis Of Presentation [Line Items]        
Premises and equipment, useful life   10 years    
Maximum | Software and Software Development Costs        
Basis Of Presentation [Line Items]        
Premises and equipment, useful life   7 years    
Qualpay        
Basis Of Presentation [Line Items]        
Percentage of business acquired (as a percent) 60.00%      
Number of seats on the board of directors acquired | board_seat 3      
Total number of seats on the board of directors of the acquiree | board_seat 5      
Cash paid $ 7,000      
Settlement of acquired debt $ 31,100      
Qualpay | Minimum        
Basis Of Presentation [Line Items]        
Other intangible assets, useful life   5 years    
Qualpay | Maximum        
Basis Of Presentation [Line Items]        
Other intangible assets, useful life   8 years