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Related Party Transaction - Additional Information (Detail) - USD ($)
12 Months Ended 13 Months Ended
Oct. 07, 2016
Jan. 31, 2021
Jan. 31, 2020
Jan. 31, 2021
Sep. 30, 2020
Aug. 03, 2020
Aug. 02, 2020
Related Party Transaction [Line Items]              
Maximum number of preferred stock to be issued (in shares)   2,000,000 2,000,000 2,000,000   2,000,000 1,000,000
Common stock, shares authorized (in shares)   40,000,000 40,000,000 40,000,000   40,000,000 20,000,000
Common stock, par value (in usd per share)   $ 0.01 $ 0.01 $ 0.01      
Net proceeds from common stock offering   $ 3,584,000 $ 0        
Ladenburg Thalmann & Co. Inc.              
Related Party Transaction [Line Items]              
Common stock, shares authorized (in shares)         5,000,000    
Common stock, par value (in usd per share)         $ 0.01    
Former CEO              
Related Party Transaction [Line Items]              
Interest rate on obligation payable to related party   4.00%          
Outstanding obligation payable to related party, current   $ 968,000   $ 968,000      
Series A Preferred Stock - $1.00 par value per share | Ladenburg Thalmann & Co. Inc.              
Related Party Transaction [Line Items]              
Maximum number of preferred stock to be issued (in shares) 500,000       500,000    
Percentage of compensation fees to be paid 2.00%            
Stock issued during period (in shares)   44,186   994,046      
Preferred stock issued from at the market sale of stock program (as a percent)   100.00%          
Gross proceeds from preferred stock   $ 1,000,000.0          
Equity distribution compensation expenses   20,408          
Net proceeds from preferred stock   1,000,000.0          
Series A Preferred Stock - $1.00 par value per share | Non-Executive Chairman              
Related Party Transaction [Line Items]              
Equity distribution compensation expenses   $ 0          
Common Stock | Ladenburg Thalmann & Co. Inc.              
Related Party Transaction [Line Items]              
Stock issued during period (in shares)   1,584,556          
Equity distribution compensation expenses   $ 79,307          
Gross proceeds from common stock   4,000,000.0          
Net proceeds from common stock offering   3,600,000          
Common Stock | Non-Executive Chairman              
Related Party Transaction [Line Items]              
Equity distribution compensation expenses   $ 0