Annual reports filed by certain Canadian issuers pursuant to Section 15(d) and Rule 15d-4

Financial Instruments - Additional Information (Detail)

v3.19.1
Financial Instruments - Additional Information (Detail) - USD ($)
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
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%    
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