Annual report pursuant to Section 13 and 15(d)

Shareholders' Equity and Capital Stock (Details Textual)

v2.4.0.8
Shareholders' Equity and Capital Stock (Details Textual)
 1 Months Ended 0 Months Ended 1 Months Ended 12 Months Ended 12 Months Ended 12 Months Ended
Dec. 18, 2013
USD ($)
Mar. 05, 2013
Dec. 19, 2013
Aug. 31, 2013
Jun. 24, 2013
Jun. 30, 2013
Apr. 30, 2013
USD ($)
Feb. 23, 2012
USD ($)
Dec. 31, 2013
USD ($)
Dec. 31, 2012
USD ($)
Dec. 31, 2011
USD ($)
Dec. 31, 2013
CAD
Dec. 31, 2012
CAD
Jan. 31, 2012
CAD
Dec. 31, 2010
Dec. 31, 2013
In Money Stock Option [Member]
USD ($)
Dec. 31, 2013
Restricted Stock Units (Rsus) [Member]
Dec. 31, 2003
Restricted Stock Units (Rsus) [Member]
USD ($)
Dec. 31, 2013
Stock Options [Member]
USD ($)
Dec. 31, 2012
Stock Options [Member]
USD ($)
Dec. 31, 2011
Stock Options [Member]
USD ($)
Dec. 31, 2013
Four and One-Half Months After Grant [Member]
Dec. 31, 2013
Nine Months After Grant [Member]
Dec. 31, 2013
Thirteen and One-Half Months After Grant [Member]
Dec. 31, 2013
Eighteen Months After Date Of Grant [Member]
Dec. 31, 2013
First Anniversary [Member]
Dec. 31, 2013
Second Anniversary [Member]
Sale of Stock, Price Per Share               $ 1.00                                      
Common shares and warrants issued for cash, net of issue costs               $ 17,300,000                                      
Share-Based Compensation Arrangement By Share-Based Payment Award, Award Vesting Percentage                 10.00%                         22.00% 22.00% 22.00% 24.00%    
Share Price $ 1.10                     1.44                              
Outstanding, December 31, 2009                 9,273,659 8,511,722 6,413,902       5,665,568 7,310,366                      
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number                 7,028,291             5,064,998                      
Share-Based Compensation Arrangement By Share-Based Payment Award, Restricted Share Units Vesting Percentage                                                   50.00% 50.00%
Stock based compensation                 1,153,000 2,410,000 2,479,000                                
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Stock Options                               800,000                      
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Share-based Awards Other than Options                                   400,000                  
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition                               1 year 2 months 12 days 1 year 8 months 12 days                    
Proceeds from Stock Options Exercised                                     300,000 100,000 5,200,000            
Allocated Share-based Compensation Expense                 100,000                                    
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Exercise Price                       1.20 0.76 0.91                          
Foreign Currency Cash And Cash Equivalents At Carrying Value                 100,000                                    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value                 1,000,000                                    
Common Stock Shares Issued In Exchange Of Restricted Shares Units                 338,451 120,359                                  
Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Exercises In Period                 377,927 88,473 1,677,432                                
Stock Issued During Period Value Issued For Royalty Interest             763,000   763,000                                    
Stock Issued During Period, Shares, New Issues 4,709,089             17,250,000                                      
Proceeds from Issuance of Private Placement 5,100,000                                                    
Payments Of Stock Issuance Costs $ 200,000             $ 1,000,000 $ 238,000 $ 1,003,000 $ 0                                
Class Of Warrant Or Right Issued Number   25,000 2,354,545 3,100,800 4,294,167 4,294,167                                          
Class Of Warrant Or Right, Exercise Price Of Warrants Or Rights     1.35 1.25 1.20 1.20     1.19 1.06 1.12       1.12                        
Class Of Warrant Or Right Cancelled Number       1,550,400