Balance Sheet Details - Intangible Assets (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	$ 74,716	$ 78,001
Less accumulated amortization	(53,100)	(47,742)
Intangible assets, net	$ 21,616	30,259
Developed product technology [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated useful lives	1 year
Finite-lived intangible assets, gross	$ 21,633	22,526
Distribution rights [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated useful lives	4 years
Finite-lived intangible assets, gross	$ 2,100	2,095
Intellectual property [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	$ 1,004	1,004
License agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated useful lives	1 year
Finite-lived intangible assets, gross	$ 16,714	16,716
Core technology [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated useful lives	4 years
Finite-lived intangible assets, gross	$ 4,086	4,554
Trademarks and trade names [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated useful lives	2 years
Finite-lived intangible assets, gross	$ 3,245	3,559
Customer-related [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated useful lives	9 years
Finite-lived intangible assets, gross	$ 19,169	20,493
Distribution network [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated useful lives	5 years
Finite-lived intangible assets, gross	$ 4,027	4,027
Physician Education Programs [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	2,513	2,802
Supply agreement [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	$ 225	$ 225