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

Financial Instruments - Additional Information (Detail)

v3.20.1
Financial Instruments - Additional Information (Detail)
 12 Months Ended
Dec. 31, 2018
USD ($)
Dec. 31, 2018
CAD ($)
Dec. 31, 2017
USD ($)
Dec. 31, 2016
USD ($)
Disclosure of nature and extent of risks arising from financial instruments [line items]        
Cash and cash equivalents $ 11,471,243   $ 26,130,493 $ 4,339,911
Accounts payable and accrued liabilities 6,447,888   2,218,352  
Warrant liability $ 11,250,167   17,849,460 $ 2,365,691
Changes in sensitivity interest rate 1.00% 1.00%    
Annual net loss changes due to interest rate effect $ 113,711   257,762  
5% strengthening of US Dollar against Canadian Dollar [member]        
Disclosure of nature and extent of risks arising from financial instruments [line items]        
Profit of (Loss) 192,059   888,913  
CDN Current assets [member] | 5% strengthening of US Dollar against Canadian Dollar [member]        
Disclosure of nature and extent of risks arising from financial instruments [line items]        
Strengthening of currency against current assets   $ 277,228 509,371  
Profit of (Loss) (10,155)   (20,301)  
CDN Accounts payable and accrued liability [member] | 5% strengthening of US Dollar against Canadian Dollar [member]        
Disclosure of nature and extent of risks arising from financial instruments [line items]        
Strengthening of currency against accounts payable and accrued liabilities 5,520,457   22,813,047  
Profit of (Loss) 202,214   $ 909,214  
Transition Adjustments [member]        
Disclosure of nature and extent of risks arising from financial instruments [line items]        
Expected incremental funding $ 45,000,000