Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity - Summary of information about warrants outstanding (Details)

v3.21.1
Stockholders' Equity - Summary of information about warrants outstanding (Details) - $ / shares
3 Months Ended 6 Months Ended
Oct. 08, 2020
Nov. 30, 2020
Feb. 28, 2021
Exercise price (in dollars per share)     $ 3.21
October 2020 Common Warrants      
Warrants Outstanding 200,000   2,300,000
Weighted average Life of Outstanding Warrants in years     4 years 7 months 6 days
Exercise price (in dollars per share)     $ 3.30
October 2020 Underwriter Warrants      
Warrants Outstanding     200,000
Weighted average Life of Outstanding Warrants in years     4 years 7 months 6 days
Exercise price (in dollars per share)     $ 3.30
May 2020 Common Warrants      
Warrants Outstanding     1,277,580
Weighted average Life of Outstanding Warrants in years     4 years 2 months 12 days
Exercise price (in dollars per share)     $ 5.40
May 2020 Underwriter Warrants      
Warrants Outstanding     111,108
Weighted average Life of Outstanding Warrants in years     4 years 2 months 12 days
Exercise price (in dollars per share)     $ 5.40
March 2020 Exchange Warrants      
Warrants Outstanding     423,669
Weighted average Life of Outstanding Warrants in years     4 years 7 months 6 days
Exercise price (in dollars per share)     $ 10.17
Amended March 2019 Warrants      
Warrants Outstanding     66,288
Weighted average Life of Outstanding Warrants in years     3 years
Exercise price (in dollars per share)     $ 40.00
March 2019 Services Warrants      
Warrants Outstanding     3,366
Weighted average Life of Outstanding Warrants in years     3 years
Exercise price (in dollars per share)     $ 70.00
June 2018 Warrants      
Warrants Outstanding     6,276
Weighted average Life of Outstanding Warrants in years     2 years 9 months 18 days
Exercise price (in dollars per share)     $ 40.00
June 2018 Services Warrants      
Warrants Outstanding     5,422
Weighted average Life of Outstanding Warrants in years     2 years 9 months 18 days
Exercise price (in dollars per share)     $ 99.60
2017 PIPE Warrants      
Warrants Outstanding     2,500
Weighted average Life of Outstanding Warrants in years     1 year 3 months 18 days
Exercise price (in dollars per share)     $ 276.00
Warrant [Member]      
Warrants Outstanding   4,396,209  
Weighted average Life of Outstanding Warrants in years   4 years 6 months  
Exercise price (in dollars per share)     $ 5.51