Stockholders' Equity - Schedule of Assumption to Calculate Weighted Average Grant Date Fair Value of Options Grant (Details) - Common Stock - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Class Of Stock [Line Items]
Expected volatility, minimum	45.90%	43.50%
Expected volatility, maximum	47.00%	43.80%
Risk-free interest rate, minimum	2.70%	1.86%
Risk-free interest rate, maximum	3.00%	2.07%
Weighted average grant date fair value per share	$ 1.61	$ 0.0085
Grant date fair value of options vested	$ 536,666	$ 1,546,692
Intrinsic value of options exercised	$ 559,433	$ 946,134
Minimum
Class Of Stock [Line Items]
Expected term (in years)	5 years 4 months 24 days	5 years 3 months 18 days
Maximum
Class Of Stock [Line Items]
Expected term (in years)	5 years 10 months 24 days	5 years 10 months 24 days