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Note 10 - Income Tax Benefit - Components of Income Tax (Provision) Benefit (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017
Federal | $ 1,873,248 | $ 1,851,821
State | 683,290 | 392,695
Total | 2,556,538 | 2,244,516
Federal | 29,152 | 337,841
State | 10,634 | 71,642
Total | 39,786 | 409,483
Total Income Tax Benefit Before Valuation Allowance and Change in Tax Laws | 2,596,324 | 2,653,999
Change in tax laws |  | (837,223)
Valuation allowance | (2,596,324) | (1,816,776)
Total Income Tax Benefit |  |
Net operating loss carryforward | 5,967,884 | 3,371,560
Less valuation allowance | (5,967,884) | (3,371,560)
Total Deferred Tax Assets |  |

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