Annual report pursuant to Section 13 and 15(d)

Shareholders' Equity and Capital Stock - o/s warrants (Details)

v3.10.0.1
Shareholders' Equity and Capital Stock - o/s warrants (Details) - $ / shares
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Class of Warrant or Right        
Exercise price $ 1.00 $ 0.97 $ 1.02 $ 1.71
Number of warrants 13,062,878 5,844,567 5,844,567 8,224,112
$0.91 [Member]        
Class of Warrant or Right        
Exercise price $ 1.00      
Number of warrants 13,062,878      
Remaining contractual life (years) 2 years 8 months 12 days      
Expiry Sep. 25, 2021      
$0.95 [Member]        
Class of Warrant or Right        
Exercise price $ 1.00      
Number of warrants 13,062,878      
Remaining contractual life (years) 2 years 8 months 12 days