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Income Taxes - Schedule of Reconciliation of the Differences Between Taxes Computed Using the Statutory Federal Income Tax Rate and Actual Income Tax Expense (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Amount      
Income tax expense using the statutory Federal income tax rate of 21% on income before taxes $ 234,866 $ 198,889 $ 177,467
State taxes, net of federal tax benefit 54,151 48,039 42,027
Tax-exempt interest, net of interest expense disallowance (5,266) (5,338) (5,348)
Income earned on bank owned life insurance (1,304) (1,139) (1,013)
Excess tax benefits on share based compensation (3,179) (3,621) (2,314)
Meals, entertainment and related expenses 2,900 2,823 2,439
FDIC insurance expense 9,319 8,602 7,713
Non-deductible compensation expense 2,822 2,587 2,147
Tax benefits related to tax credits, net (5,820) (4,636) (3,950)
Foreign tax effects 5,333 6,187 3,378
Other, net 741 (349) (91)
Total income tax expense $ 294,563 $ 252,044 $ 222,455
Percent      
Income tax expense using the statutory Federal income tax rate of 21% on income before taxes 21.00% 21.00% 21.00%
State taxes, net of federal tax benefit 4.80% 5.10% 5.00%
Tax-exempt interest, net of interest expense disallowance (0.50%) (0.60%) (0.60%)
Income earned on bank owned life insurance (0.10%) (0.10%) (0.10%)
Excess tax benefits on share based compensation (0.30%) (0.40%) (0.30%)
Meals, entertainment and related expenses 0.30% 0.30% 0.30%
FDIC insurance expense 0.80% 0.90% 0.90%
Non-deductible compensation expense 0.20% 0.30% 0.30%
Tax benefits related to tax credits, net (0.50%) (0.50%) (0.50%)
Foreign tax effects 0.50% 0.70% 0.40%
Other, net 0.10% (0.10%) (0.10%)
Income tax expense 26.30% 26.60% 26.30%