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Share Capital (Schedule of Share Captial) (Details)
 12 Months Ended
Dec. 31, 2017
USD ($)
shares
Dec. 31, 2016
USD ($)
shares
Disclosure of classes of share capital [line items]    
Outstanding, options, beginning | shares   3,105,355
Outstanding, options, Weighted average exercise price, beginning | $   $ 3.66
Stock Options Clase of Share Capital [member]    
Disclosure of classes of share capital [line items]    
Outstanding, options, beginning | shares 844,993  
Exercised, options | shares (307,160) (2,236,861)
Granted, options | shares 617,694  
Forfeited, options | shares   (23,501)
Outstanding, options, ending | shares 1,155,527 844,993
Exercisable, options | shares 537,833 459,578
Outstanding, options, Weighted average exercise price, beginning | $ $ 4.19  
Exercised, options, Weighted average exercise price | $ 3.39 $ 3.45
Forfeited, options, Weighted average exercise price | $   4.79
Granted, options, Weighted average exercise price | $ 6.35  
Outstanding, options, Weighted average exercise price, ending | $ 5.56 4.19
Exercisable, options, Weighted average exercise price | $ $ 4.64 $ 3.68
Warrants Clase of Share Capital [member]    
Disclosure of classes of share capital [line items]    
Outstanding, other than options, beginning | shares 582,977  
Exercised, other than options | shares 238,515 931,700
Granted, other than options | shares   1,514,677
Outstanding, other than options, ending | shares 344,462 582,977
Weighted average, beginning, other units | $ $ 6.01  
Weighted average, granted, other units | $   $ 6.01
Weighted average, exercised, other units | $ 6.01 6.01
Weighted average, ending, other units | $ $ 6.01 $ 6.01