Basis of Presentation, Summary of Significant Accounting Policies (Schedule of Antidilutive Securities) (Details) - shares	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Shares not included in the computation of EPS	2,711,274	5,114,955
Warrants to purchase common stock [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Shares not included in the computation of EPS	2,061,770	3,574,257
Option to purchase common stock [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Shares not included in the computation of EPS	12,000	12,000
Unvested restricted stock awards [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Shares not included in the computation of EPS	633,305	1,524,499
Convertible Preferred Stock Series B [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Shares not included in the computation of EPS	4,199	4,199