Annual report pursuant to Section 13 and 15(d)

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

v3.3.1.900
Shareholders' Equity and Capital Stock - o/s options (Details) - USD ($)
$ / shares in Units, $ in Thousands
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Outstanding Stock Options        
Exercise price $ 0.88 $ 1.12 $ 1.19 $ 1.32
Number of options, Outstanding 9,974,407 8,468,614 9,273,659 8,511,722
Weighted- average remaining contractual life (years), Outstanding 2 years 4 months 24 days      
Aggregate Intrinsic Value, Outstanding $ 217      
Number of options, Exercisable 7,484,229      
Weighted- average remaining contractual life (years), Exercisable 1 year 8 months 12 days      
Aggregate Intrinsic Value, Exercisable $ 142      
Stock Option Exercise Price Range One [Member]        
Outstanding Stock Options        
Exercise price $ 2.07      
Number of options, Outstanding 1,172,648      
Weighted- average remaining contractual life (years), Outstanding 1 month 6 days      
Number of options, Exercisable 1,172,648      
Weighted- average remaining contractual life (years), Exercisable 1 month 6 days      
Expiry Jan. 28, 2016      
Stock Option Exercise Price Range Two [Member]        
Outstanding Stock Options        
Exercise price $ 1.13      
Number of options, Outstanding 545,000      
Weighted- average remaining contractual life (years), Outstanding 6 months      
Number of options, Exercisable 545,000      
Weighted- average remaining contractual life (years), Exercisable 6 months      
Expiry Jul. 07, 2016      
Stock Option Exercise Price Range Three [Member]        
Outstanding Stock Options        
Exercise price $ 0.85      
Number of options, Outstanding 615,238      
Weighted- average remaining contractual life (years), Outstanding 8 months 12 days      
Number of options, Exercisable 615,238      
Weighted- average remaining contractual life (years), Exercisable 8 months 12 days      
Expiry Sep. 09, 2016      
Stock Option Exercise Price Range Four [Member]        
Outstanding Stock Options        
Exercise price $ 0.84      
Number of options, Outstanding 200,000      
Weighted- average remaining contractual life (years), Outstanding 9 months 18 days      
Number of options, Exercisable 200,000      
Weighted- average remaining contractual life (years), Exercisable 9 months 18 days      
Expiry Oct. 24, 2016      
Stock Option Exercise Price Range Five [Member]        
Outstanding Stock Options        
Exercise price $ 0.66      
Number of options, Outstanding 897,769      
Weighted- average remaining contractual life (years), Outstanding 1 year      
Number of options, Exercisable 897,769      
Weighted- average remaining contractual life (years), Exercisable 1 year      
Expiry Jan. 12, 2017      
Stock Option Exercise Price Range Six [Member]        
Outstanding Stock Options        
Exercise price $ 1.00      
Number of options, Outstanding 200,000      
Weighted- average remaining contractual life (years), Outstanding 1 year 1 month 6 days      
Number of options, Exercisable 200,000      
Weighted- average remaining contractual life (years), Exercisable 1 year 1 month 6 days      
Expiry Feb. 01, 2017      
Stock Option Exercise Price Range Seven [Member]        
Outstanding Stock Options        
Exercise price $ 0.85      
Number of options, Outstanding 100,000      
Weighted- average remaining contractual life (years), Outstanding 1 year 2 months 12 days      
Number of options, Exercisable 100,000      
Weighted- average remaining contractual life (years), Exercisable 1 year 2 months 12 days      
Expiry Mar. 01, 2017      
Stock Option Exercise Price Range Eight [Member]        
Outstanding Stock Options        
Exercise price $ 0.55      
Number of options, Outstanding 1,243,265      
Weighted- average remaining contractual life (years), Outstanding 1 year 10 months 24 days      
Aggregate Intrinsic Value, Outstanding $ 96      
Number of options, Exercisable 1,243,265      
Weighted- average remaining contractual life (years), Exercisable 1 year 10 months 24 days      
Aggregate Intrinsic Value, Exercisable $ 96      
Expiry Dec. 07, 2017      
Stock Option Exercise Price Range Nine [Member]        
Outstanding Stock Options        
Exercise price $ 0.56      
Number of options, Outstanding 559,358      
Weighted- average remaining contractual life (years), Outstanding 2 years 3 months 18 days      
Aggregate Intrinsic Value, Outstanding $ 38      
Number of options, Exercisable 559,358      
Weighted- average remaining contractual life (years), Exercisable 2 years 3 months 18 days      
Aggregate Intrinsic Value, Exercisable $ 38      
Expiry Apr. 25, 2018      
Stock Option Exercise Price Range Ten [Member]        
Outstanding Stock Options        
Exercise price $ 0.90      
Number of options, Outstanding 100,000      
Weighted- average remaining contractual life (years), Outstanding 2 years 7 months 6 days      
Number of options, Exercisable 100,000      
Weighted- average remaining contractual life (years), Exercisable 2 years 7 months 6 days      
Expiry Aug. 01, 2018      
Stock Option Exercise Price Range Eleven [Member]        
Outstanding Stock Options        
Exercise price $ 0.87      
Number of options, Outstanding 904,164      
Weighted- average remaining contractual life (years), Outstanding 3 years      
Number of options, Exercisable 904,164      
Weighted- average remaining contractual life (years), Exercisable 3 years      
Expiry Dec. 27, 2018      
Stock Option Exercise Price Range Twelve [Member]        
Outstanding Stock Options        
Exercise price $ 1.21      
Number of options, Outstanding 100,000      
Weighted- average remaining contractual life (years), Outstanding 3 years 2 months 12 days      
Number of options, Exercisable 100,000      
Weighted- average remaining contractual life (years), Exercisable 3 years 2 months 12 days      
Expiry Mar. 31, 2019      
Stock Option Exercise Price Range Thirteen [Member]        
Outstanding Stock Options        
Exercise price $ 0.74      
Number of options, Outstanding 970,971      
Weighted- average remaining contractual life (years), Outstanding 3 years 10 months 24 days      
Number of options, Exercisable 564,382      
Weighted- average remaining contractual life (years), Exercisable 3 years 10 months 24 days      
Expiry Dec. 12, 2019      
Stock Option Exercise Price Range Fourteen [Member]        
Outstanding Stock Options        
Exercise price $ 0.82      
Number of options, Outstanding 200,000      
Weighted- average remaining contractual life (years), Outstanding 4 years 4 months 24 days      
Number of options, Exercisable 64,000      
Weighted- average remaining contractual life (years), Exercisable 4 years 4 months 24 days      
Expiry May 29, 2020      
Share-Based Compensation Arrangement By Share-Based Payment Award, Options Outstanding Number 15 Member        
Outstanding Stock Options        
Exercise price $ 0.62      
Number of options, Outstanding 824,296      
Weighted- average remaining contractual life (years), Outstanding 4 years 7 months 6 days      
Aggregate Intrinsic Value, Outstanding $ 14      
Number of options, Exercisable 84,235      
Weighted- average remaining contractual life (years), Exercisable 4 years 7 months 6 days      
Aggregate Intrinsic Value, Exercisable $ 1      
Expiry Aug. 17, 2020      
Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Outstanding, Number Sixteen member        
Outstanding Stock Options        
Exercise price $ 0.58      
Number of options, Outstanding 1,341,698      
Weighted- average remaining contractual life (years), Outstanding 4 years 10 months 24 days      
Aggregate Intrinsic Value, Outstanding $ 69      
Number of options, Exercisable 134,170      
Weighted- average remaining contractual life (years), Exercisable 4 years 10 months 24 days      
Aggregate Intrinsic Value, Exercisable $ 7      
Expiry Dec. 11, 2020