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Capital Stock (Details 2) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]        
Share-based Compensation $ 692 $ 472 $ 1,272 $ 919
Weighted Average Number Diluted Shares Outstanding Adjustment [Abstract]        
Basic 33,569,180 32,045,314 33,240,467 31,946,654
Weighted Average Number Diluted Shares Outstanding Adjustment 1,456,470 900,618 0 988,801
Diluted 35,025,650 32,945,932 33,240,467 32,935,455
Cost of Sales [Member]        
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]        
Share-based Compensation $ 15 $ 30 $ 36 $ 58
Research and Development Expense [Member]        
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]        
Share-based Compensation 22 12 45 20
Selling and Marketing Expense [Member]        
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]        
Share-based Compensation 107 74 194 144
General and Administrative Expense [Member]        
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]        
Share-based Compensation $ 548 $ 356 $ 997 $ 697