Note 8 - Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($)	Mar. 31, 2022	Mar. 31, 2021
Stock based compensation	$ 3,144,084	$ 3,131,344
Net operating loss carryforward	10,816,588	10,460,788
Impairment of long-lived assets	0	975,461
Depreciation and Amortization expense	(1,369)	(458,938)
Other temporary items	(209,714)	(220,795)
Other temporary items	209,714	220,795
Total deferred tax assets	13,749,589	14,329,450
Less valuation allowance	(13,749,589)	(14,329,450)
Net deferred tax asset	$ 0	$ 0