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Segments - Summary of Long-lived Assets (Net) Attributable to Operations Geographical Segment (Details) - USD ($)
Dec. 31, 2017
Dec. 31, 2016
Long-lived assets net $ 13,618,655 $ 13,196,060
United States [Member]    
Long-lived assets net 13,613,043 13,174,461
Foreign Countries [Member]    
Long-lived assets net $ 5,612 $ 21,599