Income Taxes - Reconciliation of Statutory U.S. Federal Rate and Tax Effective Rates (Detail)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Income Tax Disclosure [Abstract]
Statutory federal income tax rate	21.00%	21.00%	21.00%
State income tax, net of federal benefit	3.00%	3.60%	3.60%
State credit carryforwards	(0.20%)	1.20%	(0.80%)
U.S. federal R&D tax credit	(1.80%)	(1.80%)	(1.80%)
Non-deductible equity compensation	1.10%	1.10%	0.90%
Excess benefit of equity compensation	(3.20%)	(4.80%)	(4.90%)
Employee compensation limitation	3.40%	3.70%	3.40%
Global Intangible Low Taxed Income (GILTI)	0.10%	0.10%	0.20%
Foreign-derived intangible income (FDII) deduction	(3.60%)	(3.30%)	(3.10%)
Foreign operations	(2.90%)	0.50%	(0.70%)
Tax contingencies	(0.30%)	(1.30%)	(0.30%)
Other permanent differences	0.70%	(0.30%)	(0.60%)
Change in valuation allowance	0.10%	(1.30%)	0.70%
Income taxes	17.40%	18.40%	17.60%