Quarterly report pursuant to Section 13 or 15(d)

Condensed Consolidated Balance Sheets (Parenthetical) (Unaudited)

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Condensed Consolidated Balance Sheets (Parenthetical) (Unaudited) - USD ($)
Mar. 31, 2019
Dec. 31, 2018
Statement of Financial Position [Abstract]    
Accounts receivable, net of allowance $ 602,711 $ 657,513