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Income Taxes - Schedule of Income (Loss) Before Income Tax Expense (Benefit) (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Amount      
Federal income tax at statutory rate $ 47,118 $ 69,455 $ 61,173
State income tax, net of federal benefit 9,831 16,447 9,184
Tax-exempt interest, net of disallowance (769) (769) (650)
Bank-owned life insurance (2,129) 1,286 (3,084)
Tax credits, net of basis reduction (19,902) (11,199) (8,644)
Equity-based compensation (1,888) (679) (2,293)
Non-deductible executive compensation 2,868 1,872 2,074
FDIC premium limitation 2,440 1,604 268
Unrecognized tax benefits 4,993 (785) 3,633
Other 342 3,365 1,602
Income tax expense $ 42,904 $ 80,597 $ 63,263
% of pretax income      
Federal income tax at statutory rate 21.00% 21.00% 21.00%
State income tax, net of federal benefit 4.38% 4.97% 3.15%
Tax-exempt interest, net of disallowance (0.34%) (0.23%) (0.22%)
Bank-owned life insurance (0.95%) 0.39% (1.06%)
Tax credits, net of basis reduction (8.87%) (3.39%) (2.97%)
Equity-based compensation (0.84%) (0.21%) (0.79%)
Non-deductible executive compensation 1.28% 0.57% 0.71%
FDIC premium limitation 1.09% 0.49% 0.09%
Unrecognized tax benefits 2.23% (0.24%) 1.25%
Other 0.14% 1.02% 0.56%
Effective income tax rate 19.12% 24.37% 21.72%