Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity - Additional Information (Detail)

v3.21.1
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
Mar. 31, 2021
USD ($)
$ / shares
shares
Dec. 31, 2020
shares
Sep. 30, 2020
shares
Mar. 31, 2020
USD ($)
$ / shares
shares
Dec. 31, 2019
USD ($)
shares
Sep. 30, 2019
USD ($)
shares
Aug. 19, 2021
shares
Jun. 26, 2021
shares
Mar. 31, 2021
USD ($)
$ / shares
shares
Mar. 31, 2020
USD ($)
$ / shares
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 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 shares of Common Stock and (iii) common warrants to purchase an aggregate of 7,763 shares of Common Stock (“2020 Investor Warrants”), including 800 shares of Common Stock and 2020 Investor Warrants to purchase an aggregate of 1,013 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     31,764,000               31,764,000   11,458,000    
Warrants exercised for cash | $                     $ 4,399,000 $ 27,000      
Shares issued for services | $           $ 4,000 $ 3,000 $ 5,000              
Number of options granted                     4,999,000        
Total compensation expense | $     $ 1,718,000     96,000         $ 4,248,000 307,000      
Stock options exercisable     2,128,000               2,128,000        
Accelerated vested of stock option                     280,000        
Accelerated expense | $                     $ 53,000        
Stock option exercise price | $ / shares     $ 0.61               $ 0.61        
Number of stock options outstanding     6,453,000               6,453,000        
Stock options [Member]                              
Class Of Stock [Line Items]                              
Aggregate intrinsic value of stock options outstanding | $     $ 1,618     0         $ 1,618 0      
Aggregate intrinsic value of stock options exercisable | $     1,044     $ 0         1,044 0      
Unrecognized compensation expense | $     $ 3,959,000               $ 3,959,000        
Unrecognized compensation expense, term                     2 years 6 months        
Aggregate intrinsic value of unvested stock options | $                     $ 573,000 $ 519,000      
Weighted average contractual term                     9 years 4 months 20 days 9 years 2 months 12 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     142,000               142,000        
Common stock, shares issued | $                     $ 6,380,000        
Common stock issued under the 2017 Plan                     178,000        
Percentage of fully diluted shares of common stock                     8.00%        
Number of options granted                 156,000 67,000 223,000        
Previous grants during the period                     250,000        
Stock options [Member]                              
Class Of Stock [Line Items]                              
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     6,453,000               6,453,000   1,559,000    
Stock options [Member] | CA$ $20.00 Exercise Price                              
Class Of Stock [Line Items]                              
Stock option exercise price | $ / shares     $ 15.90               $ 15.90        
Number of stock options outstanding     2,500               2,500        
Common stock                              
Class Of Stock [Line Items]                              
Series B preferred stock dividend, shares     3,000 3,000 4,000 4,000 4,000 4,000              
Conversion of Series B preferred stock to common stock, shares     2,000 10,000       6,000              
Issued warrants to underwriters 4,895,000                            
Warrants exercise price | $ / shares $ 0.001                            
Shares issued for services, shares           9,000 5,000 7,000     0 21,000      
Shares issued for services | $                     $ 0 $ 12,000      
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 | $                       $ 27,000      
2020 Investor Warrant [Member]                              
Class Of Stock [Line Items]                              
Issued warrants to underwriters 7,763,000                            
Common stock, shares issued 800,000                            
Warrants To Purchase Common Stock1 1,013,000                            
Underwriting discounts and commissions amount | $ $ 6,583,000                            
Expiry date Aug. 16, 2024                            
Placement Agent | Series C Agent Warrants [Member]                              
Class Of Stock [Line Items]                              
Fair value disclosure | $     $ 3,287,000               $ 3,287,000        
Warrants outstanding, term     4 years               4 years        
Director | 2017 Omnibus Incentive Plan [Member]                              
Class Of Stock [Line Items]                              
Total compensation expense | $                     $ 319,000        
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                     4,759,000        
Number of options expected to vest     4,279,000               4,279,000        
Stock option vesting description                     Of the total granted, 4,279 options to purchase shares of common stock 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 options to purchase shares of common stock granted to executive officers and directors, 480 vest in 12 equal monthly installments beginning on October 15, 2020.  All of the options to purchase shares of common stock 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                     4,699,000        
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        
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        
Conversion of common stock, shares issued                     21,516        
Deemed dividend recognized on beneficial conversion features of Series C Preferred stock issuance | $                     $ 3,181,000        
Liquidation value | $     $ 20,903               $ 20,903        
Deferred financing costs | $                         $ 85    
Preferred stock, shares outstanding     20,903               20,903   0    
Conversion of Series C preferred stock to common stock shares     17,997               17,997   0    
Preferred Stock, shares issued     21,000               21,000   0    
Preferred Stock Series C | Placement Agent | Series C Agent Warrants [Member]                              
Class Of Stock [Line Items]                              
Conversion of common stock, shares issued                     2,153        
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 | $     $ 4,808,000               $ 4,808,000   $ 5,192,000    
Shares issued of common stock for services                           902  
Preferred stock, shares outstanding     601,000               601,000   649,000    
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 | $     $ 6,000     $ 1,000         $ 15,000 $ 6,000      
Conversion of Series B preferred stock to common stock, shares                     150,000   162,000    
Preferred Stock, shares issued     601,000               601,000   649,000    
Common stock                              
Class Of Stock [Line Items]                              
Series B preferred stock dividend, shares     3,000     4,000         10,000 12,000      
Preferred Stock Series A                              
Class Of Stock [Line Items]                              
Liquidation value | $     $ 279,000               $ 279,000   $ 279,000    
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   279,000                          
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        
Cumulative dividends | $     $ 15,062               $ 15,062        
Total gross proceeds | $                     25,000,000        
Net proceeds from private placement | $                     21,598,000        
Deferred financing costs | $                     $ 3,402,000        
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        
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 377,000                            
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        
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%