Stockholder's Equity - Summary of Warrant Activity (Details)	12 Months Ended
	Dec. 31, 2017 USD ($) $ / shares shares
Equity [Abstract]
Warrants Outstanding, Beginning Balance | shares	846,765
Warrants Outstanding, Granted | shares	1,892,019
Warrants Outstanding, Exercised | shares	(40,834)
Warrants Outstanding, Forfeited and Cancelled | shares	(74,873)
Warrants Outstanding, Ending Balance | shares	2,623,077
Warrants Outstanding Weighted Average Remaining Life, Beginning Balance	2 years 9 months 7 days
Warrants Outstanding Weighted Average Remaining Life, Granted	4 years 2 months 27 days
Warrants Outstanding Weighted Average Remaining Life, Exercised	2 years
Warrants Outstanding Weighted Average Remaining Life, Forfeited and Cancelled	2 years
Warrants Outstanding Weighted Average Remaining Life, Ending Balance	3 years 7 months 13 days
Warrants Outstanding Weighted Average Exercise Price, Beginning Balance	$ 6.48
Warrants Outstanding Weighted Average Exercise Price, Granted	5.73
Warrants Outstanding Weighted Average Exercise Price, Exercised	3.90
Warrants Outstanding Weighted Average Exercise Price, Forfeited and Cancelled	6.00
Warrants Outstanding Weighted Average Exercise Price, Ending Balance	$ 5.96
Warrants Outstanding Aggregate Intrinsic Value, Beginning Balance | $	$ 0
Warrants Outstanding Aggregate Intrinsic Value, Granted	$ 54,880
Warrants Outstanding Aggregate Intrinsic Value, Ending Balance | $	$ 54,880