Subsequent Events - Additional Information (Detail) - USD ($)				3 Months Ended	9 Months Ended
	Oct. 23, 2015	Oct. 06, 2015	Sep. 04, 2015	Dec. 31, 2015	Sep. 30, 2015
Subsequent Event [Line Items]
Amount outstanding under the Revolving Credit Facility					$ 75,000,000
Subsequent Event [Member] | BioMarin Pharmaceutical Inc. [Member]
Subsequent Event [Line Items]
Business acquisition agreement date		Oct. 06, 2015
Revolving Credit Facility [Member]
Subsequent Event [Line Items]
Line of credit facility, maximum borrowing capacity			$ 75,000,000
Debt instrument term			1 year		6 months
Interest rate spread on base rate, description					(a) the LIBOR rate, plus an applicable margin ranging from 1.75% to 2.50% per annum, based upon the secured leverage ratio (as defined in the Credit Agreement), or (b) the prime lending rate, plus an applicable margin ranging from 0.75% to 1.50% per annum, based upon the senior secured net leverage ratio (as defined in the Credit Agreement)
Revolving Credit Facility [Member] | LIBOR [Member] | Minimum [Member]
Subsequent Event [Line Items]
Interest rate spread on base rate			1.75%
Revolving Credit Facility [Member] | LIBOR [Member] | Maximum [Member]
Subsequent Event [Line Items]
Interest rate spread on base rate			2.50%
Revolving Credit Facility [Member] | Prime Rate [Member] | Minimum [Member]
Subsequent Event [Line Items]
Interest rate spread on base rate			0.75%
Revolving Credit Facility [Member] | Prime Rate [Member] | Maximum [Member]
Subsequent Event [Line Items]
Interest rate spread on base rate			1.50%
Revolving Credit Facility [Member] | Multicurrency Sub-facility [Member]
Subsequent Event [Line Items]
Line of credit facility, maximum borrowing capacity			$ 20,000,000
Revolving Credit Facility [Member] | Letter of Credit Sub-Facility [Member]
Subsequent Event [Line Items]
Line of credit facility, maximum borrowing capacity			10,000,000
Revolving Credit Facility [Member] | Swing Line Loan Sub-facility [Member]
Subsequent Event [Line Items]
Line of credit facility, maximum borrowing capacity			$ 100,000
Revolving Credit Facility [Member] | Subsequent Event [Member]
Subsequent Event [Line Items]
Line of credit facility, maximum borrowing capacity	$ 300,000,000
Debt instrument term	5 years
Interest rate spread on base rate, description	(a) the LIBOR rate, plus an applicable margin ranging from 1.75% to 2.50% per annum, based upon the secured leverage ratio (as defined in the Credit Agreement) or (b) the prime lending rate, plus an applicable margin ranging from 0.75% to 1.50% per annum, based upon the senior secured net leverage ratio (as defined in the Credit Agreement)
Amount outstanding under the Revolving Credit Facility	$ 75,000,000
Repayment of outstanding credit facility	$ 75,000,000
Revolving Credit Facility [Member] | Subsequent Event [Member] | LIBOR [Member] | Minimum [Member]
Subsequent Event [Line Items]
Interest rate spread on base rate	1.75%
Revolving Credit Facility [Member] | Subsequent Event [Member] | LIBOR [Member] | Maximum [Member]
Subsequent Event [Line Items]
Interest rate spread on base rate	2.50%
Revolving Credit Facility [Member] | Subsequent Event [Member] | Prime Rate [Member] | Minimum [Member]
Subsequent Event [Line Items]
Interest rate spread on base rate	0.75%
Revolving Credit Facility [Member] | Subsequent Event [Member] | Prime Rate [Member] | Maximum [Member]
Subsequent Event [Line Items]
Interest rate spread on base rate	1.50%
Revolving Credit Facility [Member] | Subsequent Event [Member] | Multicurrency Sub-facility [Member]
Subsequent Event [Line Items]
Line of credit facility, maximum borrowing capacity	$ 50,000,000
Revolving Credit Facility [Member] | Subsequent Event [Member] | Letter of Credit Sub-Facility [Member]
Subsequent Event [Line Items]
Line of credit facility, maximum borrowing capacity	20,000,000
Revolving Credit Facility [Member] | Subsequent Event [Member] | Swing Line Loan Sub-facility [Member]
Subsequent Event [Line Items]
Line of credit facility, maximum borrowing capacity	$ 10,000,000
Credit Agreement [Member]
Subsequent Event [Line Items]
Obligations under credit agreement, description					(i) all tangible and intangible assets of the Loan Parties, except for certain customary excluded assets, and (ii) all of the capital stock owned by the Loan Parties thereunder (limited, in the case of the stock of certain non-U.S. subsidiaries of the Company, to 65% of the capital stock of such subsidiaries).
Credit Agreement [Member] | Subsequent Event [Member]
Subsequent Event [Line Items]
Obligations under credit agreement, description	(i) all tangible and intangible assets of the Loan Parties, except for certain customary excluded assets, and (ii) all of the capital stock owned by the Loan Parties thereunder (limited, in the case of the stock of certain non-U.S. subsidiaries of the Company and Domestic Foreign Holding Companies, to 65% of the capital stock of such subsidiaries).
Defined Regulatory and Sales-Based Milestones [Member] | Subsequent Event [Member] | BioMarin Pharmaceutical Inc. [Member]
Subsequent Event [Line Items]
Business acquisition maximum contingent consideration		$ 160,000,000
Scenario, Forecast [Member] | BioMarin Pharmaceutical Inc. [Member]
Subsequent Event [Line Items]
Business acquisition upfront cash payments				$ 410,000,000