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Employee and Consultant Equity-Based Compensation - 2012 Omnibus Equity Incentive Plan (Details) - shares
1 Months Ended 12 Months Ended
May 31, 2014
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Options exercised (shares)   158,743 124,884    
Outstanding (shares)   6,857,124 6,167,170 5,628,726  
2012 Omnibus Equity Incentive Plan | Stock Option          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Options available (shares) 5,677,500 2,096,762     1,677,500
Additional shares authorized (shares) 4,000,000        
Expiration period   10 years      
Options exercised (shares)   200,557      
Outstanding (shares)   3,380,181      
Restricted new grants (shares)     200,000    
2012 Omnibus Equity Incentive Plan | Stock Option | Vesting terms (i), cliff vesting          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Vesting period   1 year      
2012 Omnibus Equity Incentive Plan | Stock Option | Vesting terms (ii), monthly vesting          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Vesting period   1 year      
2012 Omnibus Equity Incentive Plan | Stock Option | Vesting terms (iv), annual vesting          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Vesting period   5 years      
2012 Omnibus Equity Incentive Plan | Stock Option | Vesting terms (iv), two years after grant date          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Vesting period   2 years      
Vesting percentage   40.00%      
2012 Omnibus Equity Incentive Plan | Stock Option | Vesting terms (iv), monthly over next three years          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Vesting period   3 years      
Vesting percentage   60.00%