Schedule of Accounts Payable and Accrued Liabilities (Detail) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Condensed Financial Information Of Parent Company Only Disclosure [Abstract]
Accounts payable and accrued operating expenses	$ 135,604	$ 191,353
Accrued compensation expense	60,526	109,038
Accrued rebates payable	36,157	34,737
Accrued royalties payable	14,106	15,151
Value added taxes payable	8,178	7,848
Other	17,876	12,378
Total accounts payable and accrued liabilities	$ 272,447	$ 370,505	[1]

[1] December 31, 2016 balances were derived from the audited Consolidated Financial Statements included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2016, filed with the Securities and Exchange Commission (the SEC) on February 27, 2017.