Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity - Additional Information (Detail)

v3.20.4
Stockholders' Equity - Additional Information (Detail)
1 Months Ended 3 Months Ended 6 Months Ended 9 Months Ended 12 Months Ended
Aug. 16, 2019
USD ($)
$ / shares
shares
Sep. 30, 2014
$ / shares
shares
Dec. 31, 2020
USD ($)
$ / shares
shares
Sep. 30, 2020
shares
Dec. 31, 2019
USD ($)
$ / shares
shares
Sep. 30, 2019
USD ($)
shares
Dec. 31, 2020
USD ($)
$ / shares
shares
Dec. 31, 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            
Preferred stock, par value | $ / shares     $ 0.001       $ 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     25,868,000       25,868,000       11,458,000    
Warrants exercised for cash | $             $ 1,180,000 $ 27,000          
Shares issued for services | $         $ 3,000 $ 5,000              
Accumulated stock option exercises             35,000            
Number of options granted             4,999,000            
Total compensation expense | $     $ 2,125,000   160,000   $ 2,530,000 211,000          
Stock options exercisable     1,221       1,221            
Accelerated vested of stock option             279,675            
Accelerated expense | $             $ 53,455,000            
Stock option exercise price | $ / shares     $ 0.61       $ 0.61            
Number of stock options outstanding     6,487       6,487            
Stock options [Member]                          
Class Of Stock [Line Items]                          
Aggregate intrinsic value of stock options outstanding | $     $ 789,343   39,198   $ 789,343 39,198          
Aggregate intrinsic value of stock options exercisable | $     571,657   $ 7,472   571,657 7,472          
Unrecognized compensation expense | $     $ 5,700       $ 5,700            
Unrecognized compensation expense, term             2 years 9 months            
Aggregate intrinsic value of unvested stock options | $             $ 217,686 $ 31,726          
Weighted average contractual term             9 years 7 months 20 days 9 years 6 months 7 days          
2017 Omnibus Incentive Plan [Member]                          
Class Of Stock [Line Items]                          
Number of shares available under the plan                         6,700,000
Common stock, shares outstanding     142,375       142,375            
Common stock, shares issued | $             $ 6,344,334,000            
Common stock issued under the 2017 Plan             178,291            
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            
Stock options [Member]                          
Class Of Stock [Line Items]                          
Accumulated stock option exercises             35            
Number of options granted             4,999,000            
Stock option exercise price | $ / shares             $ 0.61            
Number of options forfeited             14,000            
Number of stock options outstanding     6,487,000       6,487,000       1,559,000    
Stock options [Member] | CA$ $20.00 Exercise Price                          
Class Of Stock [Line Items]                          
Stock option exercise price | $ / shares     $ 15.70       $ 15.70            
Number of stock options outstanding     2,500       2,500            
Common stock                          
Class Of Stock [Line Items]                          
Series B preferred stock dividend, shares     3,000 4,000 4,000 4,000              
Conversion of Series B preferred stock to common stock, shares     10,000     6,000              
Issued warrants to underwriters 4,895,000                        
Warrants exercise price | $ / shares $ 0.001                        
Shares issued for services, shares         5,000 7,000 0 11,672          
Shares issued for services | $             $ 0 $ 8,187          
Pre-Funded Warrants                          
Class Of Stock [Line Items]                          
Issued warrants to underwriters 2,655,000                        
Warrants exercise price | $ / shares         $ 0.01     $ 0.01          
Issued warrants to underwriters         2,655,000     2,655,000          
Warrants exercised for cash | $               $ 26,550,000          
2020 Investor Warrant [Member]                          
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 | Series C Agent Warrants [Member]                          
Class Of Stock [Line Items]                          
Fair value disclosure | $     $ 3,300,000       $ 3,300,000            
Warrants outstanding, term     4 years       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       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       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 | Series C Agent Warrants [Member]                          
Class Of Stock [Line Items]                          
Warrants outstanding, measurement input     0.27       0.27            
Measurement Input, Price Volatility | Minimum | Placement Agent | Series C Agent Warrants [Member]                          
Class Of Stock [Line Items]                          
Warrants outstanding, measurement input     95.2       95.2            
Measurement Input, Price Volatility | Maximum | Placement Agent | Series C Agent Warrants [Member]                          
Class Of Stock [Line Items]                          
Warrants outstanding, measurement input     95.8       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 | $     $ 23,670,000       $ 23,670,000            
Deferred financing costs | $                     $ 84,944    
Preferred stock, shares outstanding     23,670       23,670       0    
Conversion of Series C preferred stock to common stock shares     20,348,764       20,348,764       0    
Preferred Stock, shares issued     24,000       24,000       0    
Preferred Stock Series C | Placement Agent | Series C 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       $ 1.16            
Series C-2 Preferred Shares [Member]                          
Class Of Stock [Line Items]                          
Conversion price | $ / shares     1.214       1.214            
Series C-3 Preferred Shares [Member]                          
Class Of Stock [Line Items]                          
Conversion price | $ / shares     $ 1.15       $ 1.15            
Preferred Stock Series B                          
Class Of Stock [Line Items]                          
Conversion price | $ / shares                       $ 32.00  
Liquidation value | $     $ 4,900,000       $ 4,900,000       $ 5,200,000    
Shares issued of common stock for services                       902,238  
Preferred stock, shares outstanding     610,238       610,238       648,613    
Conversion of Series C preferred stock to common stock shares                       0.25  
Purchase price of shares | $ / shares                       $ 8.00  
Bid price | $ / shares                       $ 80.00  
Final closing date                       5 years  
Conversion of preferred stock to common stock date                       Apr. 29, 2021  
Preferred stock, rate of dividend                       9.00%  
Direct increase in accumulated deficit | $     $ 4,453   $ 2,552   $ 9,633 $ 4,598          
Conversion of Series B preferred stock to common stock, shares             152,580       162,177    
Preferred Stock, shares issued     610,000       610,000       649,000    
Common stock                          
Class Of Stock [Line Items]                          
Series B preferred stock dividend, shares     3,479   3,700   7,179 7,400          
Preferred Stock Series A                          
Class Of Stock [Line Items]                          
Liquidation value | $     $ 278,530       $ 278,530       $ 278,530    
Preferred stock, shares outstanding     279,000       279,000       279,000    
Preferred stock, rate of dividend   3.00%                      
Preferred Stock, shares issued     279,000       279,000       279,000    
Change in preferred stock | $     $ 0   $ 0   $ 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       $ 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       $ 1,000            
Issuance, shares             2,504            
Underwriting Offering | 2020 Investor Warrant [Member]                          
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       $ 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%