Intangible Assets (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Dec. 31, 2016
Acquired Intangible Assets by Major Class [Line Items]
Trademarks, net	$ 2,608	$ 2,608
Amortized Intangible Assets, Gross Carrying Amount	76,575	76,575
Amortized Intangible Assets, Accumulated Amortization	(45,599)	(43,464)
Amortized Intangible Assets, Net Amount	$ 30,976	33,111
Licenses
Acquired Intangible Assets by Major Class [Line Items]
Weighted Useful Lives (Years)	5 years 9 months 22 days
Amortized Intangible Assets, Gross Carrying Amount	$ 20,130	20,130
Amortized Intangible Assets, Accumulated Amortization	(17,535)	(17,248)
Amortized Intangible Assets, Net Amount	$ 2,595	2,882
Product Lines
Acquired Intangible Assets by Major Class [Line Items]
Weighted Useful Lives (Years)	7 years 6 months
Amortized Intangible Assets, Gross Carrying Amount	$ 50,093	50,093
Amortized Intangible Assets, Accumulated Amortization	(22,236)	(20,634)
Amortized Intangible Assets, Net Amount	$ 27,857	29,459
Customer relationships
Acquired Intangible Assets by Major Class [Line Items]
Weighted Useful Lives (Years)	4 years 10 months 24 days
Amortized Intangible Assets, Gross Carrying Amount	$ 3,152	3,152
Amortized Intangible Assets, Accumulated Amortization	(2,841)	(2,755)
Amortized Intangible Assets, Net Amount	$ 311	397
Trade Name
Acquired Intangible Assets by Major Class [Line Items]
Weighted Useful Lives (Years)	5 years
Amortized Intangible Assets, Gross Carrying Amount	$ 3,000	3,000
Amortized Intangible Assets, Accumulated Amortization	(2,800)	(2,650)
Amortized Intangible Assets, Net Amount	$ 200	350
Non-compete agreements
Acquired Intangible Assets by Major Class [Line Items]
Weighted Useful Lives (Years)	5 years
Amortized Intangible Assets, Gross Carrying Amount	$ 200	200
Amortized Intangible Assets, Accumulated Amortization	(187)	(177)
Amortized Intangible Assets, Net Amount	$ 13	$ 23