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Summary of Significant Accounting Policies (Details)
$ in Thousands
 1 Months Ended 12 Months Ended
Jun. 01, 2023
USD ($)
board_seat
Dec. 31, 2025
USD ($)
Dec. 31, 2025
USD ($)
Dec. 31, 2024
USD ($)
Dec. 31, 2023
USD ($)
Basis Of Presentation [Line Items]          
Settlement of acquired debt     $ 0 $ 0 $ 31,109
Restricted cash   $ 21,200 $ 21,200 34,600  
Loan agreement, repayment performance, reasonable period of time     6 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    
Early surrender of BOLI policies   220,200 $ 220,247 0 $ 0
Surrender of BOLI policies   $ 14,227 $ 14,227 $ 0  
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, 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
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
LIHTC tax credits and other tax benefits     $ 130,700 $ 80,800 $ 81,600
LIHTC amortization expense     96,300 60,700 $ 63,900
Other non-interest expense          
Basis Of Presentation [Line Items]          
Fair value adjustment on derivative     $ 8,100 $ 8,700  
Core Deposits          
Basis Of Presentation [Line Items]          
Finite-lived intangible asset, useful life   10 years 10 years    
Minimum          
Basis Of Presentation [Line Items]          
Other intangible assets, useful life     5 years    
Minimum | Buildings and improvements          
Basis Of Presentation [Line Items]          
Useful life   10 years 10 years    
Minimum | Furniture, equipment and software          
Basis Of Presentation [Line Items]          
Useful life   3 years 3 years    
Minimum | Software and Software Development Costs          
Basis Of Presentation [Line Items]          
Useful life   3 years 3 years    
Maximum          
Basis Of Presentation [Line Items]          
Other intangible assets, useful life     10 years    
Maximum | Buildings and improvements          
Basis Of Presentation [Line Items]          
Useful life   40 years 40 years    
Maximum | Furniture, equipment and software          
Basis Of Presentation [Line Items]          
Useful life   10 years 10 years    
Maximum | Software and Software Development Costs          
Basis Of Presentation [Line Items]          
Useful life   7 years 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