Annual report pursuant to Section 13 and 15(d)

Warrants - Summary of Warrant Activity (Details)

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Warrants - Summary of Warrant Activity (Details) - shares
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Number of warrants outstanding, beginning 3,588,000  
Number of warrants outstanding, ending 2,263,000 3,588,000
Warrants [Member]    
Number of warrants outstanding, beginning 243,000 243,000
Number of warrants exercised
Number of warrants granted
Number of warrants expired
Number of warrants outstanding, ending 243,000 243,000
May 2018 Warrants [Member] | Equity [Member]    
Number of warrants outstanding, beginning 84,000 84,000
Number of warrants exercised
Number of warrants granted
Number of warrants expired
Number of warrants outstanding, ending 84,000 84,000
Warrant expiration date Oct. 27, 2022 Oct. 27, 2022
October 2013 Warrants [Member] | Liabilities [Member]    
Number of warrants outstanding, beginning 26,000 26,000
Number of warrants exercised
Number of warrants granted
Number of warrants expired
Number of warrants outstanding, ending 26,000 26,000
Warrant expiration date Oct. 24, 2023 Oct. 24, 2023
January 2014 Warrants [Member] | Liabilities [Member]    
Number of warrants outstanding, beginning 133,000 133,000
Number of warrants exercised
Number of warrants granted
Number of warrants expired
Number of warrants outstanding, ending 133,000 133,000
Warrant expiration date Jan. 16, 2024 Jan. 16, 2024