Note 2 - Summary of Significant Accounting Policies (Details Textual) - USD ($)	12 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2014
Furniture and Fixtures [Member]
Property, Plant and Equipment, Useful Life	5 years
Leasehold Improvements [Member]
Property, Plant and Equipment, Useful Life	5 years
Machinery and Equipment [Member]
Property, Plant and Equipment, Useful Life	5 years
Other than Temporary Impairment Losses, Investments, Available-for-sale Securities	$ 0	$ 0	$ 0
Allowance for Doubtful Accounts Receivable, Write-offs	0	0	0
Provision for Doubtful Accounts	0	0	0
Shipping, Handling and Transportation Costs	$ 20,721	$ 12,771	$ 15,542
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	6,000	4,000	4,000
Impairment of Long-Lived Assets Held-for-use	$ 0	$ 0	$ 0
Product Warranty Term	1 year