Note 11 - Warrant Liability (Details Textual) - USD ($)	3 Months Ended						9 Months Ended		12 Months Ended
	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Dec. 31, 2022	Dec. 31, 2021	Mar. 31, 2022	Jul. 02, 2022	Jul. 31, 2021	Jul. 02, 2021
Warrant Liability, Current	$ 0						$ 0		$ 182,161
Warrant Liability, Current	0						0		(182,161)
Net Income (Loss) Attributable to Parent, Total	$ (93,771)	$ (100,043)	$ 38,666	$ 72,393	$ 37,156	$ 30,672	$ (155,148)	$ 140,221
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)										$ 0.20		$ 0.17
Class of Warrant or Right, Exercisable Period (Month)										12 months		12 months
Warrant Liability, Current									182,000		$ 288,000
Warrant Liability, Current									$ (182,000)		$ (288,000)