Stockholder's Equity - Summary of Warrant Activity (Details)	12 Months Ended
	Dec. 31, 2018 USD ($) $ / shares shares
Equity [Abstract]
Warrants Outstanding, Beginning Balance | shares	2,623,077
Warrants Outstanding, Granted | shares	510,000
Warrants Outstanding, Exercised | shares	(2,015,620)
Warrants Outstanding, Forfeited and Cancelled | shares	(34,022)
Warrants Outstanding, Ending Balance | shares	1,083,435
Warrants Outstanding Weighted Average Remaining Life, Beginning Balance	3 years 7 months 13 days
Warrants Outstanding Weighted Average Remaining Life, Granted	4 years 5 months 20 days
Warrants Outstanding Weighted Average Remaining Life, Forfeited and Cancelled	4 years 2 months 30 days
Warrants Outstanding Weighted Average Remaining Life, Ending Balance	1 year 15 days
Warrants Outstanding Weighted Average Exercise Price, Beginning Balance	$ 5.96
Warrants Outstanding Weighted Average Exercise Price, Granted	5.42
Warrants Outstanding Weighted Average Exercise Price, Exercised	5.36
Warrants Outstanding Weighted Average Exercise Price, Forfeited and Cancelled	5.40
Warrants Outstanding Weighted Average Exercise Price, Ending Balance	$ 6.83
Warrants Outstanding Aggregate Intrinsic Value, Beginning Balance | $	$ 54,880
Warrants Outstanding Aggregate Intrinsic Value, Granted	$ 387,600
Warrants Outstanding Aggregate Intrinsic Value, Ending Balance | $