Note 6 - Summary of Stock Option Activity (Details) - $ / shares	9 Months Ended		12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Mar. 31, 2014
Outstanding, beginning of year (in shares)	600,000	5,600,000
Outstanding, beginning of year (in dollars per share)	$ 0.02	$ 0.01
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross	3,000,000
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price	$ 0.20
Exercised (in shares)		(5,000,000)	(5,000,000)
Exercised (in dollars per share)		$ 0.01
Outstanding, end of year (in shares)	3,600,000	600,000	5,600,000
Outstanding, end of year (in dollars per share)	$ 0.17	$ 0.02	$ 0.01
Exercisable, end of year (in shares)	3,600,000	600,000
Exercisable, end of year (in dollars per share)	$ 0.17	$ 0.02