Quarterly report pursuant to Section 13 or 15(d)

Liquidity (Details Textual)

v3.20.2
Liquidity (Details Textual) - USD ($)
1 Months Ended
May 30, 2020
Apr. 30, 2020
Dec. 31, 2019
Nov. 30, 2019
Aug. 31, 2019
Jun. 30, 2020
Jun. 30, 2019
Dec. 31, 2018
Liquidity (Textual)                
Cash and cash equivalents     $ 1,625,671     $ 16,112,907 $ 173,902 $ 1,368,395
Cash backlog           $ 17.3    
Net proceeds of offering $ 15,596,141 $ 1,522,339 $ 2,117,948          
Net proceeds of approximately       $ 326,250 $ 1,136,014