Annual report pursuant to Section 13 and 15(d)

Shareholders' Equity - Warrants (Details)

v3.21.1
Shareholders' Equity - Warrants (Details) - USD ($)
12 Months Ended
Jul. 29, 2019
May 02, 2019
Nov. 27, 2018
Jan. 30, 2021
Feb. 01, 2020
Feb. 02, 2019
Oct. 31, 2020
Class of Warrant or Right [Line Items]              
Warrants issued       1,714,120      
Warrants exercisable       1,714,120      
Warrant exercise period   5 years   5 years      
Exercise Price (Per Share)       $ 0.001     $ 2.66
Warrants issued     150,000        
Award Vesting Period       3 years 3 years 3 years  
Warrants Granted September 2016 [Member]              
Class of Warrant or Right [Line Items]              
Warrants issued       297,616      
Warrants exercisable       297,616      
Exercise Price (Per Share)       $ 29.00      
Expiration Date       Sep. 19, 2021      
Warrants Granted November 2016 [Member]              
Class of Warrant or Right [Line Items]              
Warrants issued       33,386      
Warrants exercisable       33,386      
Exercise Price (Per Share)       $ 30.00      
Expiration Date       Nov. 10, 2021      
Warrants Granted January 2017 [Member]              
Class of Warrant or Right [Line Items]              
Warrants issued       48,930      
Warrants exercisable       48,930      
Exercise Price (Per Share)       $ 17.60      
Expiration Date       Jan. 23, 2022      
Warrants Granted March 2017 [Member]              
Class of Warrant or Right [Line Items]              
Warrants issued       5,000      
Warrants exercisable       5,000      
Exercise Price (Per Share)       $ 19.20      
Expiration Date       Mar. 16, 2022      
Warrants Granted May 2019 [Member]              
Class of Warrant or Right [Line Items]              
Warrants issued       349,998      
Warrants exercisable       349,998      
Exercise Price (Per Share)       $ 15.00      
Expiration Date       May 02, 2024      
Warrants Granted November 2018 [Member]              
Class of Warrant or Right [Line Items]              
Total grant date fair value     $ 441,000        
Award Vesting Period     3 years        
Warrant shares forfeited 150,000            
Warrants Granted April 2020 [Member]              
Class of Warrant or Right [Line Items]              
Warrants issued       367,197      
Warrants exercisable       367,197      
Exercise Price (Per Share)       $ 2.66      
Expiration Date       Apr. 14, 2025      
Warrants Granted May 2020 [Member]              
Class of Warrant or Right [Line Items]              
Warrants issued       122,398      
Warrants exercisable       122,398      
Exercise Price (Per Share)       $ 2.66      
Expiration Date       Apr. 14, 2025      
Warrants Granted June 2020 [Member]              
Class of Warrant or Right [Line Items]              
Warrants issued       122,399      
Warrants exercisable       122,399      
Exercise Price (Per Share)       $ 2.66      
Expiration Date       Apr. 14, 2025      
Warrants Granted June 12, 2020 [Member]              
Class of Warrant or Right [Line Items]              
Warrants issued       122,398      
Warrants exercisable       122,398      
Exercise Price (Per Share)       $ 2.66      
Expiration Date       Apr. 14, 2025      
Warrants Granted July 2020 [Member]              
Class of Warrant or Right [Line Items]              
Warrants issued       244,798      
Warrants exercisable       244,798      
Exercise Price (Per Share)       $ 2.66      
Expiration Date       Apr. 14, 2025