Equity, Stock Plan and Warrants - Summary of Changes in Stock Options Outstanding (Details) - $ / shares	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Stockholders' Equity Note [Abstract]
Options Outstanding and expected to vest, Beginning Balance	1,941,194
Options Granted	418,000
Options Forfeited or expired	(156,253)
Options Exercised	(3,050)	(12,500)
Options Outstanding and expected to vest, Ending Balance	2,199,891
Options Vested and exercisable	1,536,078
Weighted Average Exercise Price Outstanding and expected to vest, Beginning Balance	$ 6.54
Weighted Average Exercise Price Granted	1.39
Weighted Average Exercise Price Forfeited or expired	9.36
Weighted Average Exercise Price Exercised	1.23
Weighted Average Exercise Price Outstanding and expected to vest, Ending Balance	5.37
Weighted Average Exercise Price Vested and exercisable	$ 7.02