Stock-Based Compensation - Schedule of Stock Option Awards and Restricted Stock Grants (Details)	6 Months Ended
	Jun. 30, 2018 USD ($) $ / shares shares
Weighted average contractual terms of equity awards (in years), equity awards, outstanding, ending balance	9 years 7 months 6 days
Weighted average contractual terms of equity awards (in years), equity awards exercisable, ending balance	9 years 7 months 6 days
Stock Options [Member]
Equity awards, outstanding, beginning balance | shares	703,442
Equity awards granted | shares	2,440,000
Vested and issued | shares
Equity awards forfeited, cancelled or expired | shares	(113,701)
Equity awards, outstanding, ending balance | shares	3,029,741
Aggregate intrinsic value of outstanding awards, ending balance | $	$ 1,913,490
Equity awards exercisable, ending balance | shares	1,657,820
Aggregate intrinsic value of awards exercisable, ending balance | $	$ 983,522
Weighted average exercise price, equity awards, outstanding, beginning balance | $ / shares	$ 10.34
Weighted average exercise price, equity awards granted | $ / shares	2.22
Weighted average exercise price, vested and issued | $ / shares
Weighted average exercise price, equity awards forfeited, cancelled or expired | $ / shares	40.23
Weighted average exercise price, equity awards, outstanding, ending balance | $ / shares	4.48
Weighted average exercise price, equity awards exercisable, ending balance | $ / shares	$ 2.95
Restricted Stock Awards [Member]
Non-vested restricted stock outstanding, equity awards, outstanding, beginning balance | shares
Non-vested restricted stock outstanding, equity awards granted | shares	11,000
Non-vested restricted stock outstanding, vested and issued | shares	(6,000)
Non-vested restricted stock outstanding, equity awards forfeited, cancelled or expired | shares
Non-vested restricted stock outstanding, equity awards, outstanding, ending balance | shares	5,000
Non-vested restricted stock outstanding, aggregate intrinsic value of outstanding awards, ending balance | $	$ 1,700
Weighted average grant date fair value, equity awards, outstanding, beginning balance | $ / shares
Weighted average grant date fair value, equity awards granted | $ / shares	2.64
Weighted average grant date fair value, vested and issued | $ / shares	2.64
Weighted average grant date fair value, equity awards forfeited, cancelled or expired | $ / shares
Weighted average grant date fair value, equity awards, outstanding, ending balance | $ / shares	$ 2.61