Revenue, Credit Concentrations and Geographic Information - Additional Information (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2019 USD ($) Segment Customer	Dec. 31, 2018 USD ($) Customer
Concentration Risk And Geographic Information [Line Items]
Number of operating business segment | Segment	1
Accounts receivable, net	$ 377,404	$ 342,633
Customer
Concentration Risk And Geographic Information [Line Items]
Accounts receivable, net	$ 60,200	$ 73,900
Accounts Receivable Balance
Concentration Risk And Geographic Information [Line Items]
Number of customers accounted for balance in accounts receivable | Customer	2	2
Geographic Concentration Risk | Net Product Revenue | Minimum
Concentration Risk And Geographic Information [Line Items]
Concentration risk, percentage	10.00%
Credit Concentration Risk | Accounts Receivable Balance | Customer One
Concentration Risk And Geographic Information [Line Items]
Concentration risk, percentage	24.00%	30.00%
Credit Concentration Risk | Accounts Receivable Balance | Customer Two
Concentration Risk And Geographic Information [Line Items]
Concentration risk, percentage	16.00%	16.00%