License and Development Agreements - Collegium License and Development Agreement - Additional Information (Detail) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2016	Jan. 31, 2012
Revenue Recognition, Milestone Method [Line Items]
Non-refundable payment received		$ 30.0
Payment receivable on achievement of potential sales milestones	$ 55.0
Collegium License and Development Agreement [Member]
Revenue Recognition, Milestone Method [Line Items]
Non-refundable payment received	$ 2.5
Execution term of license agreement	30 days
Payment receivable upon first commercial sale	$ 4.0
Payment receivable on achievement of potential sales milestones	$ 17.0