Note 6 - Related-party Transactions (Details)	3 Months Ended
	Jun. 30, 2018 USD ($) $ / shares shares
Private placement units sold to related parties	250,000
Options issued to director, McDowell
Options issued directors	100,000
Options issued to director, Mathewson
Options issued directors	100,000
Private Placement Unites Sold to Related Parties
Private placement units sold to related parties, value | $	$ 20,000
Private placement units sold to related parties, additional	625,000
Private placement units sold to related parties, additional, value | $	$ 50,000
Private placement units, price per unit | $ / shares	$ 0.08