Schedule of Accounts Payable and Accrued Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Accounts payable and accrued operating expenses	$ 240,981	$ 207,620
Accrued compensation expense	192,467	149,937
Accrued rebates payable	57,163	43,116
Accrued royalties payable	30,797	19,977
Deferred revenue	13,037	1,467
Value added taxes payable	8,395	7,785
Forward foreign currency exchange contracts	10,448	4,178
Lease liability	10,700
Other	6,633	3,210
Total accounts payable and accrued liabilities	$ 570,621	$ 437,290