Summary of Significant Accounting Policies (Schedule of Potentially Dilutive Common Stock Equivalents) (Details) - shares	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total potentially dilutive common stock equivalents	21,444,574	17,769,230	21,560,226	17,769,230
Options [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total potentially dilutive common stock equivalents	4,843,468	5,142,448	4,959,120	5,142,448
Warrants [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total potentially dilutive common stock equivalents	9,055,773	5,081,449	9,055,773	5,081,449
Series B Convertible Preferred Stock [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total potentially dilutive common stock equivalents	7,545,333	7,545,333	7,545,333	7,545,333