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Liquidity (Details Textual) - USD ($)
1 Months Ended
Nov. 30, 2019
Apr. 30, 2019
Sep. 30, 2019
Jun. 30, 2019
Dec. 31, 2018
Oct. 31, 2018
Dec. 31, 2017
Liquidity [Line Items]              
Cash and cash equivalents     $ 1,953   $ 1,368,395 $ 2,913,397 $ 4,870,824
Cash backlog     $ 17,800,000        
Net proceeds   $ 1,136,015          
Bid price, per share       $ 1.00      
Minimum bid price       1.00      
Closing bid price       $ 1.00      
Subsequent Event [Member] | Securities Purchase Agreement [Member]              
Liquidity [Line Items]              
Net proceeds from issuance of debt $ 326,000