Valuation and Qualifying Accounts (Detail) (Allowance for doubtful accounts receivable and cash discounts (deducted from related asset account), USD $)	12 Months Ended
	Mar. 31, 2015		Mar. 31, 2014
Allowance for doubtful accounts receivable and cash discounts (deducted from related asset account)
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period	$ 27,276		$ 37,276
Additions, Charged to Costs and Expenses	4,306		12,363
Additions, Charged to Other Accounts- Describe	484,451	[1]	541,556	[1]
Deductions- Describe	488,757	[2]	563,919	[2]
Balance at End of Period	$ 27,276		$ 27,276

[1] (A) Cash discounts allowed on sales and charged against revenue.

[2] (B) Accounts receivable written off and cash discounts allowed on sales.