Amount of Shares of Common Stock Reserved (Detail) - shares	Sep. 30, 2017	Mar. 31, 2017
Stock Option Outstanding [Line Items]
For warrants outstanding	1,951,166	1,970,166
For stock options outstanding	1,212,350	1,165,350
For debt outstanding and accrued interest	514,093
For preferred stock issued and outstanding	1,666,666
Total	5,344,275