Annual report pursuant to Section 13 and 15(d)

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

v3.6.0.2
Shareholders' Equity and Capital Stock - o/s options (Details) - $ / shares
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Outstanding Stock Options        
Exercise price $ 0.63 $ 0.88 $ 1.12 $ 1.19
Number of options, Outstanding 9,748,934 9,974,407 8,468,614 9,273,659
Weighted- average remaining contractual life (years), Outstanding 3 years      
Number of options, Exercisable 6,278,230      
Weighted- average remaining contractual life (years), Exercisable 2 years      
Stock Option Exercise Price Range Three [Member]        
Outstanding Stock Options        
Exercise price $ 0.68      
Number of options, Outstanding 822,659      
Weighted- average remaining contractual life (years), Outstanding 0 years      
Number of options, Exercisable 822,659      
Weighted- average remaining contractual life (years), Exercisable 0 years      
Expiry Jan. 12, 2017      
Stock Option Exercise Price Range Four [Member]        
Outstanding Stock Options        
Exercise price $ 1.04      
Number of options, Outstanding 200,000      
Weighted- average remaining contractual life (years), Outstanding 1 month 6 days      
Number of options, Exercisable 200,000      
Weighted- average remaining contractual life (years), Exercisable 1 month 6 days      
Expiry Feb. 01, 2017      
Stock Option Exercise Price Range Five [Member]        
Outstanding Stock Options        
Exercise price $ 0.88      
Number of options, Outstanding 100,000      
Weighted- average remaining contractual life (years), Outstanding 2 months 12 days      
Number of options, Exercisable 100,000      
Weighted- average remaining contractual life (years), Exercisable 2 months 12 days      
Expiry Mar. 01, 2017      
Stock Option Exercise Price Range Six [Member]        
Outstanding Stock Options        
Exercise price $ 0.57      
Number of options, Outstanding 1,129,448      
Weighted- average remaining contractual life (years), Outstanding 10 months 24 days      
Number of options, Exercisable 1,129,448      
Weighted- average remaining contractual life (years), Exercisable 10 months 24 days      
Expiry Dec. 07, 2017      
Stock Option Exercise Price Range Seven [Member]        
Outstanding Stock Options        
Exercise price $ 0.57      
Number of options, Outstanding 510,324      
Weighted- average remaining contractual life (years), Outstanding 1 year 3 months 18 days      
Number of options, Exercisable 510,324      
Weighted- average remaining contractual life (years), Exercisable 1 year 3 months 18 days      
Expiry Apr. 25, 2018      
Stock Option Exercise Price Range Eight [Member]        
Outstanding Stock Options        
Exercise price $ 0.92      
Number of options, Outstanding 100,000      
Weighted- average remaining contractual life (years), Outstanding 1 year 7 months 6 days      
Number of options, Exercisable 100,000      
Weighted- average remaining contractual life (years), Exercisable 1 year 7 months 6 days      
Expiry Aug. 01, 2018      
Stock Option Exercise Price Range Nine [Member]        
Outstanding Stock Options        
Exercise price $ 0.89      
Number of options, Outstanding 794,443      
Weighted- average remaining contractual life (years), Outstanding 2 years      
Number of options, Exercisable 794,443      
Weighted- average remaining contractual life (years), Exercisable 2 years      
Expiry Dec. 27, 2018      
Stock Option Exercise Price Range Ten [Member]        
Outstanding Stock Options        
Exercise price $ 1.25      
Number of options, Outstanding 100,000      
Weighted- average remaining contractual life (years), Outstanding 2 years 2 months 12 days      
Number of options, Exercisable 100,000      
Weighted- average remaining contractual life (years), Exercisable 2 years 2 months 12 days      
Expiry Mar. 31, 2019      
Stock Option Exercise Price Range Eleven [Member]        
Outstanding Stock Options        
Exercise price $ 0.76      
Number of options, Outstanding 837,228      
Weighted- average remaining contractual life (years), Outstanding 2 years 10 months 24 days      
Number of options, Exercisable 837,228      
Weighted- average remaining contractual life (years), Exercisable 2 years 10 months 24 days      
Expiry Dec. 12, 2019      
Stock Option Exercise Price Range Twelve [Member]        
Outstanding Stock Options        
Exercise price $ 0.85      
Number of options, Outstanding 200,000      
Weighted- average remaining contractual life (years), Outstanding 3 years 4 months 24 days      
Number of options, Exercisable 200,000      
Weighted- average remaining contractual life (years), Exercisable 3 years 4 months 24 days      
Expiry May 29, 2020      
Stock Option Exercise Price Range Thirteen [Member]        
Outstanding Stock Options        
Exercise price $ 0.64      
Number of options, Outstanding 709,262      
Weighted- average remaining contractual life (years), Outstanding 3 years 7 months 6 days      
Number of options, Exercisable 539,036      
Weighted- average remaining contractual life (years), Exercisable 3 years 7 months 6 days      
Expiry Aug. 17, 2020      
Stock Option Exercise Price Range Fourteen [Member]        
Outstanding Stock Options        
Exercise price $ 0.60      
Number of options, Outstanding 1,183,028      
Weighted- average remaining contractual life (years), Outstanding 3 years 10 months 24 days      
Number of options, Exercisable 638,837      
Weighted- average remaining contractual life (years), Exercisable 3 years 10 months 24 days      
Expiry Dec. 11, 2020      
Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Outstanding, Number Sixteen member        
Outstanding Stock Options        
Exercise price $ 0.54      
Number of options, Outstanding 3,062,542      
Weighted- average remaining contractual life (years), Outstanding 5 years      
Number of options, Exercisable 306,255      
Weighted- average remaining contractual life (years), Exercisable 5 years      
Expiry Dec. 16, 2021