XML 42 R39.htm IDEA: XBRL DOCUMENT v3.19.3
Property and Equipment (Details Textual) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Property and Equipment (Textual)        
Depreciation and amortization expense $ 530,520 $ 490,483 $ 1,647,290 $ 1,387,150