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Income Taxes - Schedule of Income (Loss) Before Income Tax Expense (Benefit) (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Amount      
Federal income tax at statutory rate $ 69,455 $ 61,173 $ 92,654
State income tax, net of federal benefit 16,447 9,184 16,863
Tax-exempt interest, net of disallowance (769) (650) (670)
Bank-owned life insurance 1,286 (3,084) (1,927)
Tax credits, net of basis reduction (11,199) (8,644) (11,284)
Equity-based compensation (679) (2,293) (8,237)
Non-deductible executive compensation 1,872 2,074 3,195
FDIC premium limitation 1,604 268 285
Recorded basis difference in foreign subsidiaries 0 0 (4,217)
Unrecognized tax benefits (785) 3,633 0
Other 3,365 1,602 278
Income tax expense $ 80,597 $ 63,263 $ 86,940
% of pretax income      
Federal income tax at statutory rate 21.00% 21.00% 21.00%
State income tax, net of federal benefit 4.97% 3.15% 3.82%
Tax-exempt interest, net of disallowance (0.23%) (0.22%) (0.15%)
Bank-owned life insurance 0.39% (1.06%) (0.44%)
Tax credits, net of basis reduction (3.39%) (2.97%) (2.92%)
Equity-based compensation (0.21%) (0.79%) (1.87%)
Non-deductible executive compensation 0.57% 0.71% 0.72%
FDIC premium limitation 0.49% 0.09% 0.06%
Recorded basis difference in foreign subsidiaries 0.00% 0.00% (1.00%)
Unrecognized tax benefits (0.24%) 1.25% 0.00%
Other 1.02% 0.56% 0.48%
Effective income tax rate 24.37% 21.72% 19.70%