Stockholders' Equity (Details)	6 Months Ended
	Jun. 30, 2019 USD ($) $ / shares shares
Stockholders' Equity Note [Abstract]
Stock options outstanding, beginning | shares	302,772
Stock options granted | shares	99,072
Stock options forfeited | shares	(21,448)
Stock options outstanding, ending | shares	380,396
Weighted average exercise price outstanding, beginning | $ / shares	$ 18.30
Weighted average exercise price granted | $ / shares	2.32
Weighted average exercise price forfeited | $ / shares	13.09
Weighted average exercise price outstanding, ending | $ / shares	$ 14.43
Weighted average remaining contractual life, beginning	7 years 2 months 12 days
Weighted average remaining contractual life, ending	7 years 4 months 6 days
Aggregate intrinsic value outstanding, beginning | $	$ 0
Aggregate intrinsic value outstanding, ending | $	$ 0