Quarterly report pursuant to Section 13 or 15(d)

Shareholders' Equity and Capital Stock (Details Textual)

v2.4.0.8
Shareholders' Equity and Capital Stock (Details Textual)
3 Months Ended 3 Months Ended
Mar. 31, 2014
USD ($)
Mar. 31, 2013
USD ($)
Mar. 31, 2014
CAD
Dec. 31, 2013
Dec. 19, 2013
USD ($)
Mar. 31, 2014
In Money Stock Option [Member]
USD ($)
Mar. 31, 2014
Restricted Stock Units (Rsus) [Member]
USD ($)
Mar. 31, 2014
Stock Options [Member]
USD ($)
Mar. 31, 2014
Four and One-Half Months After Grant [Member]
Mar. 31, 2014
Nine Months After Grant [Member]
Mar. 31, 2014
Thirteen and One-Half Months After Grant [Member]
Mar. 31, 2014
Eighteen Months After Date Of Grant [Member]
Mar. 31, 2014
First Anniversary [Member]
Mar. 31, 2014
Second Anniversary [Member]
Share-Based Compensation Arrangement By Share-Based Payment Award, Award Vesting Percentage 10.00%               22.00% 22.00% 22.00% 24.00%    
Share Price     1.71   $ 1.10                  
Outstanding, December 31, 2009     8,315,737 9,273,659   6,997,444                
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number     6,548,801     5,220,508                
Share-Based Compensation Arrangement By Share-Based Payment Award, Restricted Share Units Vesting Percentage                         50.00% 50.00%
Stock based compensation $ 293,000 $ 365,000                        
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Stock Options           700,000                
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Share-based Awards Other than Options             300,000              
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition           1 year 1 month 6 days 1 year 3 months 18 days              
Proceeds from Stock Options Exercised               800,000            
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value $ 200,000