Annual and transition report of foreign private issuers pursuant to Section 13 or 15(d)

Events After Reporting Date - Additional Information (Detail)

v3.20.1
Events After Reporting Date - Additional Information (Detail)
 1 Months Ended 3 Months Ended 12 Months Ended
Mar. 25, 2020
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Jan. 28, 2020
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Jan. 18, 2020
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Jan. 03, 2020
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Dec. 23, 2019
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Aug. 29, 2019
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Mar. 31, 2019
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Mar. 21, 2019
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Aug. 10, 2018
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May 10, 2018
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May 10, 2018
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Apr. 10, 2018
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Apr. 10, 2018
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Dec. 05, 2017
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Dec. 05, 2017
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Jul. 21, 2017
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Jul. 21, 2017
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Jun. 29, 2017
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Jun. 29, 2017
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Mar. 16, 2017
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Mar. 16, 2017
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May 29, 2019
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May 28, 2019
Mar. 31, 2019
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Dec. 31, 2019
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Dec. 31, 2018
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Years
shares
Dec. 31, 2018
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Dec. 31, 2017
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Dec. 31, 2017
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May 29, 2019
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Disclosure of non-adjusting events after reporting period [line items]                                                            
Shares issued | shares                                                   21,675,849   12,686,723    
Amount allocated to common shares                                                       $ 17,392,158    
Cash commission                                                   $ 785,128   $ 598,804    
Number of share options granted in share-based payment arrangement                                                   372,866 372,866 394,830 394,830  
Weighted average remaining contractual life of outstanding share options | Years                                                   4.82        
Weighted average exercise price of share options granted in share-based payment arrangement                                                     $ 11.97   $ 15.60  
Common stock value outstanding                                                   $ 170,502,394   $ 154,016,519    
Stock issuance costs                                                   $ 1,297,668   $ 2,132,238    
Warrant exercised | shares                                                   6,500   1,755,141    
Percentage of common shares reserved for issuance                                                   10.00% 10.00%      
Number of common shares available for issue under stock option plan | shares                                                   1,241,803 1,241,803 677,063 677,063  
Over Allotment Option 1 [member]                                                            
Disclosure of non-adjusting events after reporting period [line items]                                                            
Warrant exercised | shares                                                       1,755,141    
Proceeds from warrant exercised                                                       $ 9,438,577    
Amount reclassed from warrant liability to common stock                                                       $ 7,953,581    
Bloom Burton Securities Inc [member]                                                            
Disclosure of non-adjusting events after reporting period [line items]                                                            
Gross proceeds from offerings                 $ 19,198,935       $ 8,035,941   $ 18,137,800   $ 1,328,871   $ 5,576,357   $ 5,642,537                  
Net proceeds from offering                 $ 17,464,711       7,211,320   16,555,875   1,200,788   4,838,002   5,039,817                  
Exercise price per share | (per share)                 $ 3.20 $ 10.50   $ 10.50   $ 18.00   $ 6.00   $ 6.00                        
Fair value of warrants                 $ 6,297,251 $ 658,387 $ 658,387 $ 4,553,700 4,553,700 $ 5,223,686 5,223,686 $ 575,844 575,844 $ 2,788,274 2,788,274 $ 1,297,810 1,297,810                  
Amount allocated to common shares                 12,901,684   531,469   3,482,241   12,914,114   753,027   2,788,083   4,344,727                  
Cash commission                 $ 1,343,925   $ 76,988   $ 562,516   $ 1,246,185   $ 93,021   $ 382,689   $ 394,316                  
Warrants expiration period                 Aug. 10, 2023   Apr. 10, 2023   Apr. 10, 2023   Dec. 05, 2022   Jun. 29, 2022   Jun. 29, 2022                      
Offering price per share | (per share)                 $ 2.50 $ 9.00   $ 9.00   $ 15.00   $ 4.50   $ 4.50   $ 10.50                    
Sale of offering units | shares                 7,679,574       1,126,664   1,533,333   370,567   1,612,955   715,573                  
Bloom Burton Securities Inc [member] | Over Allotment Option 1 [member]                                                            
Disclosure of non-adjusting events after reporting period [line items]                                                            
Number of warrants to purchase common stock | shares                 537,570   10,928   78,867   105,350   25,940   109,533   50,005                  
Warrants expiration period                 Aug. 10, 2020   Apr. 10, 2020   Apr. 10, 2020   Dec. 05, 2019   Jun. 29, 2019   Jun. 29, 2019   Mar. 16, 2019                  
Common stock price per share | (per share)                 $ 2.50 $ 9.00   $ 9.00   $ 15.00   $ 4.50   $ 4.50   $ 10.50                    
Events After Reporting Period [member]                                                            
Disclosure of non-adjusting events after reporting period [line items]                                                            
Number of share options granted in share-based payment arrangement   25,765                                                        
Weighted average remaining contractual life of outstanding share options | Years   7                                                        
Weighted average exercise price of share options granted in share-based payment arrangement   $ 0.657                                                        
Number of common shares available for issue under stock option plan | shares                                                 5,986,152 1,241,803 1,241,803      
Events After Reporting Period [member] | Over Allotment Option 1 [member]                                                            
Disclosure of non-adjusting events after reporting period [line items]                                                            
Warrant exercised | shares             1,018,506                                 1,018,506            
Proceeds from warrant exercised                                               $ 3,259,219            
Amount reclassed from warrant liability to common stock                                               3,742,824            
Events After Reporting Period [member] | Before Amendment [Member]                                                            
Disclosure of non-adjusting events after reporting period [line items]                                                            
Percentage of common shares reserved for issuance                                             10.00%              
Events After Reporting Period [member] | After Amendment [Member]                                                            
Disclosure of non-adjusting events after reporting period [line items]                                                            
Percentage of common shares reserved for issuance                                           15.00%                
Events After Reporting Period [member] | Amendment [Member]                                                            
Disclosure of non-adjusting events after reporting period [line items]                                                            
Exercise prices/option                                           $ 3.40               $ 4.54
Events After Reporting Period [member] | Institutional Investors [member]                                                            
Disclosure of non-adjusting events after reporting period [line items]                                                            
Shares issued | shares 7,000,000                                                          
Gross proceeds from offerings $ 1,200,000                                                          
Share price | $ / shares $ 0.17                                                          
Number of warrants to purchase common stock | shares 3,500,000                                                          
Net proceeds from offering $ 885,000                                                          
Exercise price per share | $ / shares $ 0.19                                                          
Warrants expiration period 5 years                                                          
Fair value of warrants $ 618,100                                                          
Amount allocated to common shares $ 571,900                                                          
Events After Reporting Period [member] | Wainwright [Member]                                                            
Disclosure of non-adjusting events after reporting period [line items]                                                            
Number of warrants to purchase common stock | shares 490,000                                                          
Exercise price per share | $ / shares $ 0.2125                                                          
Cash commission $ 83,300                                                          
Warrants expiration period Mar. 25, 2025                                                          
Events After Reporting Period [member] | Cambridge Design Partnership Limited [Member]                                                            
Disclosure of non-adjusting events after reporting period [line items]                                                            
Common stock shares issued for consideration other than cash | shares       501,148                                                    
Price per share | $ / shares       $ 0.50                                                    
Common stock value outstanding       $ 250,574                                                    
Events After Reporting Period [member] | Aspire Capital Fund LLC [Member] | Aspire Agreement [Member]                                                            
Disclosure of non-adjusting events after reporting period [line items]                                                            
Shares issued | shares     4,408,048   973,000 1,777,325                                     7,784,444          
Gross proceeds from offerings           $ 3,000,000                                                
Cash commission           417,113                                                
Capital Issued Commitments         $ 35,000,000 $ 35,000,000                                                
Common stock shares issued value     $ 2,071,930   423,440                                       $ 5,304,531          
Stock issuance costs         $ 35,122                                                  
Total number of shares issued | shares           639,837                                                
Offering price per share | $ / shares           $ 1.6879                                                
Events After Reporting Period [member] | Bloom Burton Securities Inc [member]                                                            
Disclosure of non-adjusting events after reporting period [line items]                                                            
Gross proceeds from offerings             $ 28,750,000                                              
Net proceeds from offering             $ 25,426,744                                              
Exercise price per share | $ / shares             $ 4.00                                              
Fair value of warrants             $ 15,897,059                                 $ 15,897,059            
Amount allocated to common shares             12,852,941                                              
Cash commission             $ 2,012,500                                              
Warrants expiration period             Mar. 24, 2024                                              
Offering price per share | $ / shares             $ 3.40                                              
Sale of offering units | shares             8,455,882                                              
Events After Reporting Period [member] | Bloom Burton Securities Inc [member] | Over Allotment Option 1 [member]                                                            
Disclosure of non-adjusting events after reporting period [line items]                                                            
Number of warrants to purchase common stock | shares               591,911                                            
Fair value of warrants               $ 864,190                                            
Warrants expiration period               Mar. 21, 2021                                            
Common stock price per share | $ / shares               $ 3.40