Balance Sheet Details - Intangible Assets (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Finite-Lived Intangible Assets [Line Items]
Developed product technology	$ 23,253	$ 22,875
Intellectual property	1,004	1,004
License agreements	17,423	14,297
Core technology	4,940	3,489
In-process technology		1,680
Trademarks and trade names	3,796	3,671
Customer-related	19,221	15,476
Distribution network	3,906	1,614
Physician education programs	3,039	2,972
Supply agreement	225	225
Intangible assets, Gross	81,088	71,834
Less accumulated amortization	(34,232)	(24,690)
Intangible assets, net	46,856	47,144
In-process technology [Member]
Finite-Lived Intangible Assets [Line Items]
Indefinite life of intangible asset	Indefinite
Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated useful lives	1 year
Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated useful lives	15 years
Developed product technology [Member] | Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated useful lives	5 years
Developed product technology [Member] | Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated useful lives	8 years
Distribution rights [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated useful lives	3 years
Distribution rights	$ 4,281	$ 4,531
Intellectual property [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated useful lives	5 years
License agreements [Member] | Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated useful lives	1 year
License agreements [Member] | Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated useful lives	7 years
Core technology [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated useful lives	10 years
Corporate trademarks [Member] | Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated useful lives	5 years
Corporate trademarks [Member] | Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated useful lives	9 years
Customer-related [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated useful lives	15 years
Distribution network [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated useful lives	10 years
Physician education programs [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated useful lives	10 years
Supply agreement [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated useful lives	10 years