Summary of Significant Accounting Policies (Details 1) - shares	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Potentially dilute securities excluded from calculation	1,781,170	1,583,351
Convertible preferred stock [Member]
Potentially dilute securities excluded from calculation	2,926	2,926
Warrants to purchase common stock [Member]
Potentially dilute securities excluded from calculation	1,249,754	1,251,709
Options to purchase common stock [Member]
Potentially dilute securities excluded from calculation	528,490	328,716