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Selling, General And Administrative
 3 Months Ended
Mar. 31, 2021
Selling, General and Administrative Expense [Abstract]  
Selling, General And Administrative

The following table summarizes the detail of selling, general and administrative expense for the three-months ended March 31, 2021 and 2020:

 

    Three-Months Ended March 31,  
    2021     2020  
Compensation and related costs   $ 5,981,459     $ 8,180,100  
Advertising and marketing     1,596,304       2,948,155  
Professional fees     1,667,096       842,703  
Technology development and software     403,475       622,144  
General and administrative     3,753,010       5,463,324  
    $ 13,401,344     $ 18,056,426