Quarterly report pursuant to Section 13 or 15(d)

Summary of Shareholders Equity Warrants Outstanding (Details)

v3.21.1
Summary of Shareholders Equity Warrants Outstanding (Details) - shares
 3 Months Ended 12 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Dec. 31, 2020
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]      
Shares Outstanding, beginning 1,328,000 [1] 5,397,000 5,397,000
Shares Issued  
Shares Exercised (2,000) [2]   (2,576,000)
Shares Tendered  
Shares Outstanding, ending   (1,493,000)
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding, Number, Ending Balance 1,326,000 [3]   1,328,000 [1]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 34,339,000 33,037,000  
Stock Options [Member]      
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]      
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 22,890,000 20,562,000  
Preferred Stock and Accrued Dividend Upon Conversion [Member]      
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]      
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 10,123,000 9,104,000  
Warrant [Member]      
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]      
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 1,326,000 3,371,000  
[1] Weighted average exercise price for outstanding warrants is $0.55.
[2] Converted into approximately 1 thousand shares of commons stock.
[3] Weighted average exercise price for outstanding warrants is $0.54.