Stockholders' Equity / (Deficit) - Summary of Options Under Employee Stock Option Plan (Details) - Stock Options [Member]	3 Months Ended
	Mar. 31, 2019 USD ($) $ / shares shares
Number of Shares Outstanding, Beginning Balance	16,667
Number of Shares, issued
Number of Shares Outstanding, Ending Balance	16,667
Number of Shares, Options exercisable, Ending Balance	16,667
Weighted Average Exercise Price, Beginning Balance | $ / shares	$ 28.20
Weighted Average Exercise Price, Ending Balance | $ / shares	28.20
Weighted Average Exercise Price Options exercisable, Ending Balance | $ / shares	$ 28.20
Total intrinsic Value, Beginning Balance | $
Total intrinsic Value, Ending Balance | $
Total intrinsic Value Options exercisable, Ending Balance | $
Weighted average Remaining contractual Life (in years), Beginning Balance	9 years 1 month 6 days
Weighted average Remaining contractual Life (in years), Ending Balance	8 years 9 months 18 days
Weighted average Remaining contractual Life (in years) Options exercisable, Ending Balance	8 years 9 months 18 days