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Note 10 - Income Taxes - Effect Income Tax Rate Reconciliation (Details)
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Federal tax benefit at statutory rate 21.00% 21.00%
Change in valuation allowance 6.50% (21.00%)
Section 382 limitation (24.10%) 0.00%
Other non-deductible expenses 0.00% (1.00%)
Stock based compensation 0.00% 0.00%
Other (3.40%) 1.00%
Total 0.00% 0.00%