Stock Option Activity (Detail) - $ / shares	6 Months Ended	12 Months Ended
	Sep. 30, 2015	Mar. 31, 2015
Shares
Beginning balance	776,500
Granted	0
Cancelled	0
Exercised	0
Expired	0
Forfeited	0
Ending balance	776,500	776,500
Vested and exercisable	675,431
Weighted Average Per Share Exercise Price
Beginning balance	$ 4.69
Ending balance	4.69	$ 4.69
Vested and exercisable	$ 2.39
Weighted Average Remaining Life (Years)
Balance	7 years 2 months 12 days	7 years 4 months 24 days
Vested and exercisable	5 years
Weighted Average Per Share Intrinsic Value
Beginning Balance	$ 1.50
Ending balance	6.16	$ 1.50
Vested and exercisable	$ 4.67