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Loss Per Common Share (Details Textual) - shares	3 Months Ended		9 Months Ended
Loss Per Common Share (Details Textual) - shares	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (shares)	1,524,218	0	1,524,218	0
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)	1,015,637			1,443,921
Series 4 Convertible Preferred Stock \| Convertible Preferred Stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Shares outstanding (shares)	95,000		95,000		95,000
Convertible preferred stock, shares issued upon conversion (shares)	10,755,602	9,936,514	10,755,602	9,936,514