Other License Agreements and Acquired Product Rights - Additional Information (Detail) - TTY License and Supply Agreement [Member] - USD ($) $ in Thousands			3 Months Ended	6 Months Ended
	Feb. 04, 2016	Oct. 07, 2010	Sep. 30, 2013	Jun. 30, 2016
Other License Agreements And Acquired Product Rights [Line Items]
Upfront payment		$ 300
Milestone payments		$ 1,300
Term of the agreement				15 years
Milestone payment received	$ 240		$ 300	$ 240