Summary of Significant Accounting Policies (Details 2) - shares	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Potentially dilute securities excluded from calculation	1,781,107	1,581,170
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	1,249,754
Options to purchase common stock [Member]
Potentially dilute securities excluded from calculation	528,427	328,490