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Loss Per Common Share (Details Textual) - shares	3 Months Ended				6 Months Ended
Loss Per Common Share (Details Textual) - shares	Jun. 30, 2019	Mar. 31, 2019	Jun. 30, 2018	Mar. 31, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018	Dec. 31, 2017
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (shares)	2,662,666,000	4,406,206		327,500
Contingent Restricted Stock Units (RSUs)
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (shares)					242,338	1,308,781
Convertible Preferred Stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Shares outstanding (shares)	145,000,000			95,000,000	145,000,000		95,000,000
Series 4 Convertible Preferred Stock \| Convertible Preferred Stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (shares)			327,500,000		4,406,206,000	1,594,761,000
Shares outstanding (shares)	145,000				145,000			95,000
Convertible preferred stock, common shares issuable upon conversion (shares)	25,621,189				25,621,189		10,544,708
Series 6 Convertible Preferred Stock \| Convertible Preferred Stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Shares outstanding (shares)	50,000				50,000
Convertible preferred stock, common shares issuable upon conversion (shares)	10,238,533				10,238,533