Quarterly report pursuant to Section 13 or 15(d)

Note 3 - Fair Value Measurements - Activity for Items Measured at Fair Value on a Recurring Basis (Details)

v3.19.3
Note 3 - Fair Value Measurements - Activity for Items Measured at Fair Value on a Recurring Basis (Details) - Stock Purchase Warrants [Member] - USD ($)
9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Balance $ 583,734 $ 3,852,882
Change in fair value - gain (416,796) (1,805,319)
Balance $ 166,938 $ 2,047,563