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

Income taxes - Disclosure of income taxes (Details)

v3.19.1
Income taxes - Disclosure of income taxes (Details) - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Non-capital losses carried forward $ 163,144 $ 117,232
Federal investment tax credits 1,926 1,409
SRED amounts 3,732 $ 0
Tax Year 2029 [Member]    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Non-capital losses carried forward 3,294  
Federal investment tax credits 30  
Tax Year 2030 [Member]    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Non-capital losses carried forward 2,341  
Federal investment tax credits 50  
Tax Year 2031 [Member]    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Non-capital losses carried forward 1,786  
Federal investment tax credits 280  
Tax Year 2032 [Member]    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Non-capital losses carried forward 7,425  
Federal investment tax credits 184  
Tax Year 2033 [Member]    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Non-capital losses carried forward 5,325  
Federal investment tax credits 75  
Tax Year 2034 [Member]    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Non-capital losses carried forward 13,032  
Federal investment tax credits 131  
Tax Year 2035 [Member]    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Non-capital losses carried forward 18,749  
Federal investment tax credits 203  
Tax Year 2036 [Member]    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Non-capital losses carried forward 21,140  
Federal investment tax credits 206  
Tax Year 2037 [Member]    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Non-capital losses carried forward 42,316  
Federal investment tax credits 353  
Tax Year 2038 [Member]    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Non-capital losses carried forward 47,736  
Federal investment tax credits $ 414