Accrued Expenses - Schedule of Accrued Expenses (Detail) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Payables and Accruals [Abstract]
Accrued bonuses	$ 15,903	$ 23,595
Accrued payroll and severance	23,189	23,718
Accrued taxes	78,771	70,350
Accrued commissions/rebates	81,450	77,430
Other	83,368	80,418
Total	$ 282,681	$ 275,511