Stock-Based Compensation (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Stock-Based Compensation
Total stock-based compensation expense	$ 503,555	$ 913,275	$ 1,361,964	$ 1,735,078
Cost of revenue
Stock-Based Compensation
Total stock-based compensation expense	70,000	57,144	207,498	152,574
General and administrative
Stock-Based Compensation
Total stock-based compensation expense	312,042	699,196	795,280	1,149,371
Sales and marketing
Stock-Based Compensation
Total stock-based compensation expense	82,994	122,282	244,887	342,775
Research and development
Stock-Based Compensation
Total stock-based compensation expense	$ 38,519	$ 34,653	$ 114,299	$ 90,358