Amount of Shares of Common Stock Reserved (Detail) - shares	Sep. 30, 2016	Mar. 31, 2016
Stock Option Outstanding [Line Items]
Common stock issued and outstanding	6,033,518
Warrants outstanding	1,891,166	2,091,166
Stock options outstanding	1,025,656	1,064,150
Preferred stock outstanding	1,666,666
Common stock reserved for future issuance	10,617,006