Loss Per Share (Details) - shares	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	43,333,808	3,855,308	43,333,808	3,855,308
Common Stock Options [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	575,597	490,541	575,597	490,541
Shares issuable upon conversion of Series E Preferred Stock (not including dividends)
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	16,171,200	0	16,171,200	0
Shares potentially issuable upon conversion of May 2018 convertible notes (assuming $0.375 price)
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	7,416,667	0	7,416,667	0
Shares potentially issuable upon conversion of April 2017 convertible notes (assuming $1.00 floor price)
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	0	305,000	0	305,000
Shares potentially issuable upon conversion of May 2017 convertible notes (assuming $1.00 floor price)
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	0	2,344,354	0	2,344,354
Warrant [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	19,170,344	715,413	19,170,344	715,413