Income tax provision (benefit) (Detail) - USD ($)	12 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Current:
Federal	$ (9,979)	$ 147,945
State	66,678	67,769
Current Income Tax Expense (Benefit)	56,699	215,714
Deferred:
Federal	(81,277)	(36,390)
State	(46,459)	(15,532)
Deferred Income Tax Expense (Benefit)	(127,736)	(51,922)
(Benefit) provision for income taxes	$ (71,037)	$ 163,792