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Property and Equipment - Schedule of Property and Equipment (Details) - USD ($)
Sep. 30, 2019
Dec. 31, 2018
Gross property and equipment $ 8,877,871 $ 9,424,004
Less: Accumulated depreciation (8,607,120) (9,080,311)
Net property and equipment 270,751 343,693
Equipment [Member]    
Gross property and equipment 6,389,366 6,739,939
Leasehold Improvements [Member]    
Gross property and equipment $ 2,488,505 $ 2,684,065