Note 7 - Income Taxes (Tables)

12 Months Ended

Dec. 31, 2021

Notes Tables

Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]

	2021			2020
Statutory US Federal tax rate		21.0	%		21.0	%
Permanent differences:
State income taxes, net of Federal benefit		8.8	%		7.0	%
Stock compensation		-0.4	%		-0.3	%
Other		-0.1	%		-0.1	%
Temporary differences		-7.9	%		-8.1	%
Valuation allowance		-21.4	%		-19.6	%
Total		0.0	%		0.0	%

Schedule of Deferred Tax Assets and Liabilities [Table Text Block]

	2021			2020
Deferred tax asset attributable to:
Net operating loss carryover	$	15,321,000		$	8,990,000
Stock-based compensation		2,193,000			1,395,000
Other		(279,000	)		501,000
Valuation allowance		(17,235,000	)		(10,886,000	)
Net deferred tax asset	$	—		$	—