Intangible Assets - Additional Information (Detail) - USD ($)	3 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Jun. 30, 2016
Finite-Lived Intangible Assets [Line Items]
Amortization expense	$ 183,000	$ 192,000
Intangible assets, net	910,000		$ 1,102,000
Amortization expense per year	$ 728,000
Remaining estimated useful life	1 year 3 months
Durasert [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, net	$ 662,000
Tethadur [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, net	$ 248,000