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Stockholders' Equity (Details 2) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2019
Jun. 30, 2018
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]        
Stock-based compensation expense     $ 896,186 $ 792,600
Cost of revenue [Member]        
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]        
Stock-based compensation expense $ 363 $ 651 724 1,341
Sales and marketing expense [Member]        
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]        
Stock-based compensation expense 45 971 90 2,221
Product development expense [Member]        
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]        
Stock-based compensation expense 10,065 12,873 99,809 19,260
General and administrative expense [Member]        
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]        
Stock-based compensation expense 247,814 203,518 424,815 399,030
Total stock compensation expense [Member]        
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]        
Stock-based compensation expense $ 258,287 $ 218,013 $ 525,438 $ 421,852