Note 11 - Warrant Liability (Details Textual) - USD ($)	3 Months Ended		12 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Mar. 31, 2022	Mar. 31, 2021	Jul. 02, 2022	Jul. 31, 2021	Jul. 02, 2021
Warrant Liability, Current	$ 0		$ 182,161
Warrant Liability, Current	0		(182,161)
Net Income (Loss) Attributable to Parent, Total	38,666	$ 30,672		$ 30,672
Revision of Prior Period, Error Correction, Adjustment [Member]
Warrant Liability, Current			(182,000)
Additional Paid in Capital, Total			288,000
Warrant Liability, Current			182,000
Prepaid Expense, Current, Total	$ 181,000
Net Income (Loss) Attributable to Parent, Total			75,000
Consulting Agreement [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)							3,500,000
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)							$ 0.17
Class of Warrant or Right, Exercisable Period (Month)							12 months
Warrant Liability, Current			182,000			$ 288,000
Warrant Liability, Current			$ (182,000)			$ (288,000)
Consulting Agreement [Member] | Subsequent Event [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)					$ 0.20
Class of Warrant or Right, Exercisable Period (Month)					12 months