Quarterly report pursuant to Section 13 or 15(d)

Shareholders' Equity - Public Offering and Private Placement Securities Purchase Agreements (Details)

v3.20.2
Shareholders' Equity - Public Offering and Private Placement Securities Purchase Agreements (Details) - USD ($)
3 Months Ended 6 Months Ended 9 Months Ended
Aug. 28, 2020
Apr. 16, 2020
May 02, 2019
Oct. 31, 2020
Aug. 01, 2020
Aug. 01, 2020
Oct. 31, 2020
Nov. 02, 2019
Securities Purchase Agreements [Line Items]                
Common stock issued, Shares 2,760,000   800,000     1,836,314    
Proceeds from issuance of common stock $ 15,833,000           $ 20,043,000 $ 6,000,000
Warrants issued       1,714,120     1,714,120  
Warrant exercise price per share       $ 0.001     $ 0.001  
Gross proceeds from private placement issuance   $ 1,500,000 $ 6,000,000   $ 2,500,000 $ 4,000,000    
Securities issuance costs     $ 175,000     $ 190,000    
Price per share of common stock $ 6.25   $ 7.50          
Warrant exercise period     5 years       5 years  
Standstill Provision, Duration of Agreement     2 years          
Vendor exclusivity agreement, Duration of contract     5 years          
Market value of warrants on the grant date     $ 193,000          
Blocker Provision, Maximum Ownership Percentage of Outstanding Common Stock   19.999%            
Exercise of warrants, Shares       114,698        
Warrants Granted April Through July 2020 - Excluding Fully-Paid Warrants [Member]                
Securities Purchase Agreements [Line Items]                
Warrants issued         979,190 979,190    
Warrant exercise price per share       $ 2.66     $ 2.66  
Expiration date of warrants       Apr. 14, 2025     Apr. 14, 2025  
Warrant [Member]                
Securities Purchase Agreements [Line Items]                
Warrant exercise price per share     $ 15.00          
Warrants issued     350,000          
Warrants Granted July 2020 - Fully-Paid [Member]                
Securities Purchase Agreements [Line Items]                
Warrants issued         114,698 114,698    
Warrant exercise price per share         $ 0.001 $ 0.001    
Over-Allotment Option [Member]                
Securities Purchase Agreements [Line Items]                
Common stock issued, Shares 360,000