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Stockholders' Equity (Details) - Equity Incentive Plan of 2009 [Member] - shares
6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Date established Jun. 24, 2009  
Number of shares authorized (shares) 15,000,000  
Number of options granted (shares) 800,000 855,000
Consultants [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Award requisite service period 10 years