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Shareholders' Equity - Public Offerings and Private Placement Securities Purchase Agreement and Registered Direct Offering (Details) - USD ($)
3 Months Ended 9 Months Ended
Jun. 09, 2021
Feb. 18, 2021
Aug. 28, 2020
Apr. 17, 2020
Apr. 14, 2020
Oct. 31, 2020
Oct. 30, 2021
Oct. 31, 2020
Securities Purchase Agreements [Line Items]                
Common stock issued, Shares 4,830,918 3,289,000 2,760,000   1,836,314      
Price per share of common stock $ 9.00 $ 7.00 $ 6.25          
Warrant exercise price per share             $ 0.001  
Gross proceeds from private placement securities issuance       $ 1,500,000   $ 2,500,000   $ 4,000,000
Securities issuance costs               190,000
Proceeds from issuance of common stock and warrants $ 40,100,000 $ 21,200,000 $ 15,800,000       $ 61,368,000 $ 20,043,000
Blocker Provision, Maximum Ownership Percentage of Outstanding Common Stock         19.999%      
Exercise of warrants, Shares           114,698    
Over-Allotment Option [Member]                
Securities Purchase Agreements [Line Items]                
Common stock issued, Shares   429,000 360,000          
Warrants Granted July 11, 2020 [Member]                
Securities Purchase Agreements [Line Items]                
Warrant exercise price per share             $ 2.66  
Expiration date of warrants             Apr. 14, 2025  
Warrants Granted April Through July2020 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
Warrants Granted July2020 Fully Paid [Member]                
Securities Purchase Agreements [Line Items]                
Warrants issued           114,698   114,698
Warrant exercise price per share           $ 0.001   $ 0.001