Income Taxes - Summary of Variations Between the Effective and Statutory U.S. Federal Income Tax Rates (Detail) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Federal income tax provision at statutory tax rate		$ 36,233	$ 35,924	$ 26,439
State income tax provision, less applicable federal tax benefit	[1]	2,184	2,956	367
Foreign income taxed at different rates		2,356	1,964	623
U.S. taxation of foreign earnings	[2]	(134)	4,134	2,349
Unrecognized tax benefits		1,775	1,454	2,954
Prior years return to provision true-up	[3]	(3,314)	(588)	(1,740)
Stock based compensation, excess tax benefits		(1,287)	(1,816)	(1,633)
U.S. tax credits	[4]	(2,692)	(1,831)	(6,412)
Non-deductible expenses and other items, net		(479)	1,214	(149)
Total		$ 34,642	$ 43,411	$ 22,798
Percentage of Federal income tax provision at statutory tax rate		21.00%	21.00%	21.00%
Percentage of state income tax provision, less applicable federal tax benefit	[1]	1.30%	1.70%	0.30%
Percentage of Foreign income taxed at different rates		1.40%	1.10%	0.50%
Percentage of U.S. taxation of foreign earnings	[2]	(0.10%)	2.40%	1.90%
Percentage of Unrecognized tax benefits		1.00%	0.80%	2.30%
Percentage of Prior years return to provision true-up		(1.90%)	(0.30%)	(1.40%)
Percentage of stock based compensation, excess tax benefits		(0.70%)	(1.10%)	(1.30%)
Percentage of U.S. tax credits	[4]	(1.60%)	(1.10%)	(5.10%)
Non-deductible expenses and other items, net		(0.30%)	0.90%	(0.10%)
Percentage of Total income tax provision		20.10%	25.40%	18.10%

[1] For 2019, amount includes incremental state research credits for the tax years 2015 - 2019 that were identified as part of a research and development tax credit study.

[2] Includes cost of global intangible low-taxed income (GILTI) in 2021, 2020 and 2019 plus other taxes paid or withheld on cash repatriated from foreign countries in 2021, 2020 and 2019. For 2021, includes the benefit of separate limitation loss foreign tax credit attributes, related to prior years, that were utilized in 2021.

[3] For 2021, amount resulted from a higher federal research credit, higher foreign-derived intangible income (FDII), and lower GILTI related to the 2020 tax year.

[4] For 2019, amount includes incremental federal research credits for 2015 - 2019 that were identified as part of a research and development tax credit study. Also includes a federal tax rate change due to the classification of certain 2016 and 2017 depreciable fixed assets as deductible research costs.