Stockholder's Equity - Summary of Stock Option Activity (Details) - $ / shares	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Equity [Abstract]
Number of Options Outstanding, Beginning Balance	173,750	36,667
Number of Options Outstanding, Granted	243,667	142,500
Number of Options Outstanding, Exercised	(9,260)
Number of Options Outstanding, Canceled	(39,151)	(5,417)
Number of Options Outstanding, Ending Balance	369,006	173,750
Number of Options Exercisable, Ending Balance	151,282
Weighted- Average Exercise Price Options Outstanding, Beginning Balance	$ 9.25	$ 38.59
Weighted- Average Exercise Price Options Outstanding, Granted	4.34	5.48
Weighted- Average Exercise Price Options Outstanding, Exercised	5.40
Weighted- Average Exercise Price Options Outstanding, Canceled	5.39	108.69
Weighted- Average Exercise Price Options Outstanding, Ending Balance	6.47	9.25
Weighted- Average Exercise Price Options Exercisable, Ending Balance	$ 9.47