Quarterly report pursuant to Section 13 or 15(d)

Note 11 - Income Taxes (Details Textual)

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Note 11 - Income Taxes (Details Textual) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Income Tax Expense (Benefit), Total $ 5,951 $ 2,583 $ (57,404) $ 43,192