Annual report pursuant to Section 13 and 15(d)

Fair Value Measurements (Details 1)

v3.19.1
Fair Value Measurements (Details 1) - Warrant Liability [Member] - USD ($)
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Beginning balance $ 1,227,786 $ 1,619,287
Additions 241,000 3,917,977
Change in fair value 8,051,196 (4,309,478)
Reclassification to equity at initial public offering (9,310,073) 0
Ending balance $ 209,909 $ 1,227,786