Income Taxes - Variation of Provision for Income Taxes from Statutory U.S. Federal Income Tax Rate (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Income taxes computed at the statutory U.S. federal income tax rate	$ 52,949	$ 61,543	$ 83,884
State income taxes, net of federal tax benefit	7,133	6,326	4,529
Tax liabilities (no longer required) required	(2,002)	1,908	1,254
Valuation allowance	1,699	240	4,636
Manufacturing exemption	0	0	(5,143)
Tax credit refunds, net	(3,493)	(3,415)	(2,797)
Foreign earnings taxed at other than 21%, 21% and 35%, respectively	3,741	7,851	(3,840)
Deferred tax rate changes	92	(1,947)	(114,163)
Other	(1,797)	(3,199)	1,662
Provision (benefit) for income taxes	$ 58,322	$ 69,307	$ (29,978)
Effective tax rate	23.10%	23.60%	(12.50%)