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Income Taxes - Reconciliation of Statutory Federal Income Tax Rate to Our Effective Rate for Continuing Operations (Detail)
3 Months Ended 9 Months Ended
Sep. 30, 2024
Sep. 30, 2023
Sep. 30, 2024
Sep. 30, 2023
Income Tax Disclosure [Abstract]        
Statutory federal income tax rate 21.00% 21.00% 21.00% 21.00%
State income taxes, net of federal income tax 2.50% 2.60% 2.50% 2.50%
Stock-based compensation windfall benefit (0.10%) (0.10%) (2.20%) (1.00%)
Permanent differences and other 0.40% 0.20% 0.60% 0.30%
Total effective rate for continuing operations 23.80% 23.70% 21.90% 22.80%