Stockholders' Equity (Details 2) - USD ($)	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Stock-based compensation expense
Total stock based compensation expense	$ 2,811,108	$ 711,741
Research and Development Expense
Stock-based compensation expense
Total stock based compensation expense	398,741	289,197
Cost of Revenue
Stock-based compensation expense
Total stock based compensation expense	18,297	26,706
Selling and Marketing Expense
Stock-based compensation expense
Total stock based compensation expense	578,721	80,488
General and Administrative Expense
Stock-based compensation expense
Total stock based compensation expense	$ 1,815,349	$ 315,350