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           Shareholders' Equity and Capital Stock (Tables)
  
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        12 Months Ended | 
      
      
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           Dec. 31, 2013 
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        | Stockholders' Equity Note [Abstract] | 
         
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        | Schedule of Share-based Compensation, Stock Options, Activity | 
                          Activity with respect to stock options is  summarized as follows:
        
           |         |           |           |           |           |      Weighted-    |          |         |           |           |           |           |      average    |          |         |           |           |      Options    |           |      exercise price    |          |         |           |           |      #    |           |      $    |          |    Outstanding, December 31, 2010    |           |           |      5,665,568    |           |      1.79    |          |    Granted    |           |           |      3,162,098    |           |      2.07    |          |    Exercised    |           |           |      (1,677,432)    |           |      2.02    |          |    Forfeited    |           |           |      (241,332)    |           |      2.14    |          |    Expired    |           |           |      (495,000)    |           |      2.59    |          |    Outstanding, December 31, 2011    |           |           |      6,413,902    |           |      1.75    |          |    Granted    |           |           |      3,114,207    |           |      0.87    |          |    Exercised    |           |           |      (88,473)    |           |      0.85    |          |    Forfeited    |           |           |      (145,414)    |           |      1.99    |          |    Expired    |           |           |      (782,500)    |           |      3.25    |          |    Outstanding, December 31, 2012    |           |           |      8,511,722    |           |      1.32    |          |    Granted    |           |           |      1,876,670    |           |      1.07    |          |    Exercised    |           |           |      (377,927)    |           |      0.79    |          |    Forfeited    |           |           |      (31,806)    |           |      0.78    |          |    Expired    |           |           |      (705,000)    |           |      1.69    |          |    Outstanding, December 31, 2013    |           |           |      9,273,659    |           |      1.19    |                     
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        | Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range | 
                               As of December 31, 2013, outstanding  stock options are as follows:
                   |         |           |      Options outstanding    |           |      Options exercisable    |           |           |          |         |           |           |           |      Weighted-    |           |           |           |           |           |      Weighted-    |           |           |           |           |          |         |           |           |           |      average    |           |      Aggregate    |           |           |           |      average    |           |      Aggregate    |           |           |          |    Exercise    |           |           |           |      remaining    |           |      Intrinsic    |           |           |           |      remaining    |           |      Intrinsic    |           |           |          |    price    |           |      Number    |           |      contractual    |           |      Value    |           |      Number    |           |      contractual    |           |      Value    |           |           |          |    $    |           |      of options    |           |      life (years)    |           |      $    |           |      of options    |           |      life (years)    |           |      $    |           |      Expiry    |          |         |           |           |           |           |           |           |           |           |           |           |           |           |           |           |          |    0.66    |           |      145,909    |           |      0.1    |           |      101    |           |      145,909    |           |      0.1    |           |      101    |           |      February 9, 2014    |          |    0.84    |           |      776,257    |           |      0.7    |           |      396    |           |      776,257    |           |      0.7    |           |      396    |           |      September 2, 2014    |          |    0.76    |           |      554,074    |           |      1.2    |           |      327    |           |      554,074    |           |      1.2    |           |      327    |           |      March 5, 2015    |          |    2.68    |           |      1,318,293    |           |      2.1    |           |      -    |           |      1,318,293    |           |      2.1    |           |      -    |           |      January 28, 2016    |          |    1.47    |           |      645,000    |           |      2.5    |           |      -    |           |      645,000    |           |      2.5    |           |      -    |           |      July 7, 2016    |          |    1.09    |           |      759,809    |           |      2.7    |           |      198    |           |      759,809    |           |      2.7    |           |      198    |           |      September 9, 2016    |          |    1.08    |           |      200,000    |           |      2.8    |           |      54    |           |      200,000    |           |      2.8    |           |      54    |           |      October 24, 2016    |          |    0.85    |           |      1,110,871    |           |      3.0    |           |      555    |           |      1,110,871    |           |      3.0    |           |      555    |           |      January 12, 2017    |          |    1.30    |           |      200,000    |           |      3.1    |           |      10    |           |      200,000    |           |      3.1    |           |      10    |           |      February 1, 2017    |          |    1.10    |           |      100,000    |           |      3.2    |           |      25    |           |      100,000    |           |      3.2    |           |      25    |           |      March 1, 2017    |          |    0.71    |           |      1,594,312    |           |      3.9    |           |      1,020    |           |      860,928    |           |      3.9    |           |      551    |           |      December 7, 2017    |          |    0.72    |           |      673,791    |           |      4.3    |           |      424    |           |      215,613    |           |      4.3    |           |      136    |           |      April 25, 2018    |          |    1.16    |           |      100,000    |           |      4.6    |           |      19    |           |      32,000    |           |      4.6    |           |      6    |           |      August 1, 2018    |          |    1.12    |           |      1,095,343    |           |      5.0    |           |      252    |           |      109,537    |           |      5.0    |           |      25    |           |      December 27, 2018    |          |         |           |           |           |           |           |           |           |           |           |           |           |           |           |           |          |    1.19    |           |      9,273,659    |           |      3.0    |           |      3,381    |           |      7,028,291    |           |      2.5    |           |      2,384    |                     
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        | Schedule of Share-based Compensation, Restricted Stock Units Award Activity | 
                          Activity with respect to RSUs is summarized as  follows:
                 |         |           |           |           |      Weighted    |           |          |         |           |           |           |      average grant    |           |          |         |           |      RSUs    |           |      date fair    value    |           |          |         |           |      #    |           |      $    |           |          |    Unvested, December 31, 2010    |           |      -    |           |      -    |           |          |    Granted    |           |      355,662    |           |      2.90    |           |          |    Forfeited    |           |      (79,297)    |           |      2.90    |           |          |    Unvested, December 31, 2011    |           |      276,365    |           |      2.87    |           |          |    Granted    |           |      703,572    |           |      0.91    |           |          |    Vested    |           |      (136,789)    |           |      2.87    |           |          |    Forfeited    |           |      (16,723)    |           |      1.66    |           |          |    Unvested, December 31, 2012    |           |      826,425    |           |      1.15    |           |          |    Granted    |           |      273,834    |           |      1.23    |           |          |    Vested    |           |      (402,581)    |           |      1.89    |           |          |    Forfeited    |           |      (6,068)    |           |      0.78    |           |          |    Unvested, December 31, 2013    |           |      691,610    |           |      0.96    |                     
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        | Schedule Of Share-Based Compensation, Shares Authorized Under Restricted Stock Units, By Grant Date | 
                          As of December 31, 2013, outstanding RSUs are as  follows: 
        
           |         |           |           |           |      Weighted-    |           |           |           |          |         |           |           |           |      average    |           |      Aggregate    |           |          |         |           |      Number of    |           |      remaining    |           |      Intrinsic    |           |          |         |           |      unvested    |           |      amortization    |           |      Value    |           |          |    Grant date    |           |      options    |           |      life (years)    |           |      $    |           |          |    January 12, 2012    |           |      144,309    |           |      0.12    |           |      195    |           |          |    December 7, 2012    |           |      273,467    |           |      1.02    |           |      369    |           |          |    December 27, 2013    |           |      273,834    |           |      2.07    |           |      370    |           |          |         |           |           |           |           |           |           |           |          |         |           |      691,610    |           |      1.25    |           |      934    |    |                     
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        | Schedule Of Share-Based Compensation, Warrants, Activity | 
                               Activity with respect to warrants is  summarized as follows:
                 |         |           |           |           |           |      Weighted-    |          |         |           |           |           |           |      average    |          |         |           |           |      Warrants    |           |      exercise price    |          |         |           |           |      #    |           |      $    |          |    Outstanding, December 31, 2010    |           |           |      100,000    |           |      1.12    |          |         |           |           |           |           |           |          |    Outstanding, December 31, 2011    |           |           |      100,000    |           |      1.12    |          |    Granted    |           |           |      50,000    |           |      0.93    |          |         |           |           |           |           |           |          |    Outstanding, December 31, 2012    |           |           |      150,000    |           |      1.06    |          |    Granted    |           |           |      9,774,512    |           |      1.19    |          |    Cancelled    |           |           |      (1,550,400)    |           |      1.17    |          |         |           |           |           |           |           |          |    Outstanding, December 31, 2013    |           |           |      8,374,112    |           |      1.19    |                     
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        | Schedule Of Share-based Compensation Shares Authorized Under Warrants Plans by exercise price range | 
                          As of December 31, 2013, outstanding warrants are  as follows:
                 |         |           |           |           |           |           |      Aggregate    |           |           |           |          |    Exercise    |           |           |           |      Remaining    |           |      Intrinsic    |           |           |           |          |    price    |           |      Number    |           |      contractual    |           |      Value    |           |           |           |          |    $    |           |      of warrants    |           |      life (years)    |           |      $    |           |      Expiry    |           |          |         |           |           |           |           |           |           |           |           |           |          |    0.92    |           |      50,000    |           |      1.7    |           |      21,500    |           |      September 4, 2015    |           |          |    1.12    |           |      100,000    |           |      1.8    |           |      23,000    |           |      November 1, 2015    |           |          |    0.93    |           |      25,000    |           |      2.2    |           |      10,500    |           |      March 5, 2016    |           |          |    1.35    |           |      2,354,545    |           |      3.0    |           |      -    |           |      December 19, 2016    |           |          |    1.12    |           |      4,294,167    |           |      4.5    |           |      987,658    |           |      June 24, 2018    |           |          |    1.17    |           |      1,550,400    |           |      4.7    |           |      279,072    |           |      August 27, 2018    |           |          |         |           |           |           |           |           |           |           |           |           |          |         |           |      8,374,112    |           |      4.7    |           |      1,321,730    |           |           |                     
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        | Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions | 
                        The initial fair value of RSUs, options and  warrants granted during the years ended December 31, 2013, 2012 and  2011 was determined using the Black-Scholes option pricing model  with the following assumptions:                 |         |           |      2013    |           |      2012    |           |      2011    |           |          |         |           |           |           |           |           |           |           |          |    Expected warrant life (years)    |           |      0.16 - 3    |           |      1.5    |           |      -    |           |          |    Expected option life (years)    |           |      3.41-3.51    |           |      3.29-3.37    |           |      3.24-3.28    |           |          |    Expected volatility    |           |      61-66%    |           |      63-78%    |           |      79-82%    |           |          |    Risk-free interest rate    |           |      0.9-1.4%    |           |      1.0-1.3%    |           |      1.3-1.9%    |           |          |    Forfeiture rate (warrants)    |           |      0.0%    |           |      0.0%    |           |      0.0%    |           |          |    Forfeiture rate (options)    |           |      4.2-4.4%    |           |      4.6-4.8%    |           |      4.4-5.1%    |           |          |    Forfeiture rate (RSUs)    |           |      7.7%    |           |      12.5-22.3%    |           |      5.0%    |           |          |    Expected dividend rate    |           |      0%    |           |      0%    |           |      0%    |                     
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