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Summary of Significant Accounting Policies - Additional Information (Details) - USD ($)
9 Months Ended
Sep. 30, 2019
Dec. 31, 2018
Accounting Policies [Abstract]    
Accounts receivable, net of allowances $ 1,959,885 $ 3,605,411
Contract assets 1,100,000 1,200,000
Deferred revenue $ 8,219,558 $ 9,366,490
Revenue expected to be recognized during next 12 months 61.00%