Quarterly report pursuant to Section 13 or 15(d)

Liquidity (Details Textual)

v3.21.2
Liquidity (Details Textual) - USD ($)
1 Months Ended
May 30, 2020
Apr. 30, 2020
Jun. 30, 2021
Dec. 31, 2020
Jun. 30, 2020
Dec. 31, 2019
Liquidity (Textual)            
Cash and cash equivalents     $ 2,323,599 $ 13,010,356 $ 16,112,907 $ 1,625,671
Cash backlog     $ 21,000,000      
Net proceeds of offering $ 15,596,141 $ 1,522,339