Note 5 - Notes Payable - Amounts Recorded in Other Expense (Details) - USD ($)	3 Months Ended	9 Months Ended
	Dec. 31, 2018	Dec. 31, 2018
Total		$ 3,140,925
Other Expense [Member]
Prepaid royalties expensed during the quarter	$ 1,530,000	1,530,000
Promissory note issued to Pacific Leaf, due on or before November 30, 2018		500,000
600,000 shares common stock issued to Pacific Leaf		131,000
Long-term note payable and accrued interest terminated		(20,075)
Total non-cash expense		2,140,925
Cash payments made in August 2018		$ 1,000,000