XML 64 R55.htm IDEA: XBRL DOCUMENT v3.21.1
Common Stock, and Warrants With-Down Round Protection - Schedule of Stock Grants, by Exercise Price Range (Details)
12 Months Ended
Dec. 31, 2020
$ / shares
shares
Outstanding Balance 1,693,071
Exercisable 1,667,863
Exercise Price One [Member]  
Exercise price | $ / shares $ 4.50
Outstanding Balance 1,298,859
Exercisable 1,273,651
Weighted average remaining contractual life (years) 6 years 6 months 14 days
Exercise Price Two [Member]  
Exercise price | $ / shares $ 6.25
Outstanding Balance 344,212
Exercisable 344,212
Weighted average remaining contractual life (years) 1 year 2 months 8 days
Exercise Price Four [Member]  
Exercise price | $ / shares $ 7.75
Outstanding Balance 50,000
Exercisable 50,000
Weighted average remaining contractual life (years) 6 years 3 months 4 days