Quarterly report pursuant to Section 13 or 15(d)

Note 11 - Commitments and Contingencies (Details Textual)

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Note 11 - Commitments and Contingencies (Details Textual) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Operating Leases, Rent Expense, Net $ 688,031 $ 903,771 $ 2,114,118 $ 2,510,782