Stockholders' Equity (Tables)

9 Months Ended

Sep. 30, 2018

Equity [Abstract]

Summary of Warrants Issued and Outstanding

The following table summarizes the warrants issued and outstanding as of September 30, 2018:

	Date of		Exercise		Shares of
Description	Issuance	Expiration	Price		Common Stock
Exercisable warrants
Warrants	09/24/2014	09/24/2019	$	20.00		1,125,005
Warrants	10/20/2014	10/20/2019	$	20.00		87,500
Warrants	3/30/2016	03/30/2021	$	3.88		521,060
Total warrants issued and outstanding						1,733,565

Summary of Stock Option Activity

The following table summarizes the stock option activity for the nine months ended September 30, 2018

	Stock Options
					Weighted-
				Exercise	Average
	Number			Price Per	Exercise Price
	of Shares			Share	Per Share
Outstanding at December 31, 2017		1,389,816		$1.17 — $26.00	$	8.39
Granted		400,000		$2.39  —  $2.47	$	2.39
Canceled/Forfeited		(37,250	)	$2.39 — $23.20	$	5.98
Outstanding at September 30, 2018		1,752,566		$1.17 — $26.00	$	7.07