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Revenue Recognition - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Apr. 01, 2019	Dec. 31, 2018
Disaggregation Of Revenue [Line Items]
Licensing revenue	$ 35,942	$ 48,548
Type of Revenue [Extensible List]	us-gaap:LicenseMember	us-gaap:LicenseMember
Contract assets, current	$ 4,943			$ 4,802
Contract assets, long term	15,008			14,560
Impairment loss of contract assets	400	$ 0
ASC 606
Disaggregation Of Revenue [Line Items]
Deferred revenue	3,200
ASC 606 \| Other Assets – Current
Disaggregation Of Revenue [Line Items]
Contract assets, current	4,900			4,800
ASC 606 \| Other Assets Noncurrent
Disaggregation Of Revenue [Line Items]
Contract assets, long term	15,000			$ 14,600
Subsequent Event
Disaggregation Of Revenue [Line Items]
Revenue, remaining performance obligation			$ 395,000
International
Disaggregation Of Revenue [Line Items]
Licensing revenue	$ 400	$ 2,000
Type of Revenue [Extensible List]	us-gaap:LicenseMember	us-gaap:LicenseMember
Cost of goods sold	$ 300	$ 1,900
Type of Cost, Good or Service [Extensible List]	us-gaap:SellingGeneralAndAdministrativeExpensesMember	us-gaap:SellingGeneralAndAdministrativeExpensesMember