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Stock-Based Compensation (Details) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2019
Jun. 30, 2018
Stock-Based Compensation        
Total stock-based compensation expense $ 468,436 $ 442,081 $ 850,789 $ 858,408
Cost of revenue        
Stock-Based Compensation        
Total stock-based compensation expense 58,319 69,239 120,843 137,498
General and administrative        
Stock-Based Compensation        
Total stock-based compensation expense 303,375 256,466 523,080 483,237
Sales and marketing        
Stock-Based Compensation        
Total stock-based compensation expense 87,168 78,277 169,299 161,893
Research and development        
Stock-Based Compensation        
Total stock-based compensation expense $ 19,574 $ 38,099 $ 37,567 $ 75,780