Annual report pursuant to Section 13 and 15(d)

Significant Accounting Policies (Schedule of Potentially Dilutive Securities) (Details)

v3.21.1
Significant Accounting Policies (Schedule of Potentially Dilutive Securities) (Details) - shares
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Potentially dilutive securities 8,565,018 8,308,821
Warrants [Member]    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Potentially dilutive securities 5,402,670 5,405,669
Stock Options [Member]    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Potentially dilutive securities 1,141,675 1,241,675
Preferred Class A [Member]    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Potentially dilutive securities 250,000 250,000
Restricted Stock Awards [Member]    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Potentially dilutive securities 302,114 299,060
Restricted Stock Units [Member]    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Potentially dilutive securities 1,468,559 1,112,417