Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity - Additional Information (Detail)

v3.20.2
Stockholders' Equity - Additional Information (Detail)
1 Months Ended 3 Months Ended 9 Months Ended 12 Months Ended
Aug. 16, 2019
USD ($)
$ / shares
shares
Sep. 30, 2014
$ / shares
shares
Sep. 30, 2020
USD ($)
$ / shares
shares
Sep. 30, 2019
USD ($)
$ / shares
shares
Aug. 19, 2021
shares
Jun. 26, 2021
shares
Jun. 30, 2020
USD ($)
$ / shares
shares
Jun. 30, 2016
$ / shares
shares
Aug. 14, 2020
shares
Class Of Stock [Line Items]                  
Deemed dividend recognized on beneficial conversion features of Series C Preferred stock issuance | $     $ 3,181,000            
Net proceeds from private placement | $     $ 21,600,000            
Convertible preferred stock     0       25,000    
Preferred stock, par value | $ / shares     $ 0.001       $ 0.001    
Underwritten public offering, description     the Company closed on the sale of (i) 4,895,000 shares of its common stock, par value $0.001 per share (the “Common Stock”), (ii) pre-funded warrants (“PFW”) to purchase an aggregate of 2,655,000 shares of Common Stock and (iii) common warrants to purchase an aggregate of 7,762,500 shares of Common Stock (“2020 Investor Warrants”), including 800,000 shares of Common Stock and 2020 Investor Warrants to purchase an aggregate of 1,012,500 shares of Common Stock sold pursuant to a partial exercise by the underwriters of the underwriters’ option to purchase additional securities, in the Company’s underwritten public offering (the “Offering”). Each share of Common Stock or PFW, as applicable, was sold together with a 2020 Investor Warrant to purchase one share of Common Stock at a combined effective price to the public of $1.00 per share of Common Stock and accompanying 2020 Investor Warrant.            
Common stock, shares issued     24,466,000       11,458,000    
Warrants exercised for cash | $     $ 994,000 $ 26,000          
Shares issued for services | $       5,000          
Number of options granted     4,999,000            
Total compensation expense | $     $ 405,000 $ 51,000          
Stock options exercisable     828            
2017 Omnibus Incentive Plan [Member]                  
Class Of Stock [Line Items]                  
Number of shares available under the plan                 6,700,000
Common stock, shares outstanding     164,235            
Common stock, shares issued | $     $ 6,379,334,000            
Common stock issued under the 2017 Plan     156,431            
Percentage of fully diluted shares of common stock     8.00%            
Number of options granted     222,584   155,734 66,850      
Previous grants during the period     250,000            
Common stock                  
Class Of Stock [Line Items]                  
Series B preferred stock dividend, shares     4,000 4,000          
Conversion of Series B preferred stock to common stock, shares       6,000          
Issued warrants to underwriters 4,895,000                
Warrants exercise price | $ / shares $ 0.001                
Shares issued for services, shares     0 6,925          
Shares issued for services | $     $ 0 $ 4,843          
Pre-Funded Warrants                  
Class Of Stock [Line Items]                  
Issued warrants to underwriters 2,655,000                
Warrants exercise price | $ / shares       $ 0.01          
Issued warrants to underwriters       2,655,000          
Warrants exercised for cash | $       $ 26,550,000          
2020 Investor Warrant                  
Class Of Stock [Line Items]                  
Issued warrants to underwriters 7,762,500                
Common stock, shares issued 800,000                
Warrants To Purchase Common Stock1 1,012,500                
Underwriting discounts and commissions amount | $ $ 6,582,966,000                
Expiry date Aug. 16, 2024                
Placement Agent | 2020 Agent Warrants [Member]                  
Class Of Stock [Line Items]                  
Fair value disclosure | $     $ 3,300,000            
Warrants outstanding, term     4 years            
Director | 2017 Omnibus Incentive Plan [Member]                  
Class Of Stock [Line Items]                  
Total compensation expense | $     $ 319,376,000            
Subject to Stockholder Approval | 2017 Omnibus Incentive Plan [Member] | Group Two                  
Class Of Stock [Line Items]                  
Stock options exercisable     250,000            
Executive Officers and Directors | 2017 Omnibus Incentive Plan [Member]                  
Class Of Stock [Line Items]                  
Number of options granted     4,758,687,000            
Number of options expected to vest     4,278,687,000            
Stock option vesting description     Of the total granted, 4,278,687 stock options vest as to 1/6 on the six month anniversary of the grant date with the remaining portion vesting in equal monthly installments over a period of 30 months commencing on the seven month anniversary of the grant date. Of the total stock options granted to executive officers and directors, 480,000 vest in 12 equal monthly installments beginning on October 15, 2020. All of the stock options granted have a 10-year term and are subject to cancellation upon the grantees’ termination of service for the Company, with certain exceptions            
Stock option term     10 years            
Executive Officers and Directors | 2017 Omnibus Incentive Plan [Member] | Exercise Price of 1.70                  
Class Of Stock [Line Items]                  
Number of options granted     4,698,687,000            
Stock option exercise price | $ / shares     $ 1.70            
Executive Officers and Directors | 2017 Omnibus Incentive Plan [Member] | Exercise Price of 1.355                  
Class Of Stock [Line Items]                  
Stock option exercise price | $ / shares     $ 1.355            
Number of options forfeited     60,000,000            
Minimum | Director | 2017 Omnibus Incentive Plan [Member]                  
Class Of Stock [Line Items]                  
Exercise period     90 days            
Maximum | Director | 2017 Omnibus Incentive Plan [Member]                  
Class Of Stock [Line Items]                  
Exercise period     1 year            
Measurement Input, Risk Free Interest Rate | Placement Agent | 2020 Agent Warrants [Member]                  
Class Of Stock [Line Items]                  
Warrants outstanding, measurement input     0.27            
Measurement Input, Price Volatility | Minimum | Placement Agent | 2020 Agent Warrants [Member]                  
Class Of Stock [Line Items]                  
Warrants outstanding, measurement input     95.2            
Measurement Input, Price Volatility | Maximum | Placement Agent | 2020 Agent Warrants [Member]                  
Class Of Stock [Line Items]                  
Warrants outstanding, measurement input     95.8            
Preferred Stock Series C                  
Class Of Stock [Line Items]                  
Shares issued of common stock for services     25,028            
Issuance, shares     25,028            
Conversion of common stock, shares issued     21,516,484            
Deemed dividend recognized on beneficial conversion features of Series C Preferred stock issuance | $     $ 3,180,000            
Liquidation value | $     $ 25,028,000            
Deferred financing costs | $             $ 84,944    
Preferred stock, shares outstanding     25,028       0    
Conversion of Series C preferred stock to common stock shares     21,516,484       0    
Preferred Stock, shares issued     25,000       0    
Preferred Stock Series C | Placement Agent | 2020 Agent Warrants [Member]                  
Class Of Stock [Line Items]                  
Conversion of common stock, shares issued     2,152,701            
Shares issued of common stock for services     2,504            
Series C-1 Preferred Shares [Member]                  
Class Of Stock [Line Items]                  
Conversion price | $ / shares     $ 1.16            
Series C-2 Preferred Shares [Member]                  
Class Of Stock [Line Items]                  
Conversion price | $ / shares     1.214            
Series C-3 Preferred Shares [Member]                  
Class Of Stock [Line Items]                  
Conversion price | $ / shares     $ 1.15            
Preferred Stock Series B                  
Class Of Stock [Line Items]                  
Conversion price | $ / shares               $ 32.00  
Liquidation value | $     $ 5,200,000       $ 5,200,000    
Shares issued of common stock for services               902,238  
Preferred stock, shares outstanding     648,613       648,613    
Purchase price of shares | $ / shares               $ 8.00  
Convertible preferred stock               0.25  
Bid price | $ / shares               $ 80.00  
Final closing date               5 years  
Preferred stock, rate of dividend               9.00%  
Direct increase in accumulated deficit | $     $ 5,180       $ 2,046    
Conversion of Series B preferred stock to common stock, shares     162,177       162,177    
Preferred Stock, shares issued     649,000       649,000    
Common stock                  
Class Of Stock [Line Items]                  
Series B preferred stock dividend, shares     3,700       3,700    
Conversion of Series B preferred stock to common stock, shares     0       6,250    
Preferred Stock Series A                  
Class Of Stock [Line Items]                  
Liquidation value | $     $ 278,530       $ 278,530    
Preferred stock, shares outstanding     279,000       279,000    
Preferred stock, rate of dividend   3.00%              
Preferred Stock, shares issued     279,000       279,000    
Change in preferred stock | $     $ 0 $ 0          
Preferred Stock Series A | Exchange Agreement [Member]                  
Class Of Stock [Line Items]                  
Preferred stock, rate of dividend   3.00%              
Preferred Stock, shares issued   278,530              
Preferred stock, par value | $ / shares   $ 1.00              
Private Placement [Member] | Preferred Stock Series C                  
Class Of Stock [Line Items]                  
Shares issued of common stock for services     25,028            
Issuance, shares     25,028            
Cumulative dividends | $     $ 15,061,952            
Total gross proceeds | $     25,000,000            
Net proceeds from private placement | $     21,600,000            
Deferred financing costs | $     $ 3,400,000            
Private Placement [Member] | Series C Preferred Stock Warrants                  
Class Of Stock [Line Items]                  
Shares issued of common stock for services     2,504            
Shares issued, price per share | $ / shares     $ 1,000            
Issuance, shares     2,504            
Underwriting Offering | 2020 Investor Warrant                  
Class Of Stock [Line Items]                  
Warrants exercise price | $ / shares $ 1.15                
Expiry date Aug. 14, 2022                
Issued warrants to underwriters 377,500,000                
Underwriter warrants commencing date Feb. 10, 2020                
Merger Agreement [Member]                  
Class Of Stock [Line Items]                  
Dividend rate     0.00%            
Merger Agreement [Member] | Private Placement [Member] | Preferred Stock Series C                  
Class Of Stock [Line Items]                  
Shares issued of common stock for services     25,028            
Shares issued, price per share | $ / shares     $ 1,000            
Issuance, shares     25,028            
Merger Agreement [Member] | Private Placement [Member] | Preferred Stock Series C | First Anniversary [Member]                  
Class Of Stock [Line Items]                  
Dividend rate     10.00%            
Merger Agreement [Member] | Private Placement [Member] | Preferred Stock Series C | Second Anniversary [Member]                  
Class Of Stock [Line Items]                  
Dividend rate     15.00%            
Merger Agreement [Member] | Private Placement [Member] | Preferred Stock Series C | Third Anniversary [Member]                  
Class Of Stock [Line Items]                  
Dividend rate     20.00%            
Merger Agreement [Member] | Private Placement [Member] | Preferred Stock Series C | Fourth Anniversary [Member]                  
Class Of Stock [Line Items]                  
Dividend rate     25.00%