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Equity-Based Compensation (Tables)
9 Months Ended
Sep. 30, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Schedule of Stock Option Activity

Stock option activity for employees:

 

    Number of Options     Weighted Average Exercise
Price
    Weighted Average Remaining Contractual Term (Years)     Aggregate Intrinsic
Value
 
Outstanding January 1, 2017     836,256     $ 16.82       4.47     $  
Granted     584,795       0.50              
Forfeited     (208,382 )     34.09              
Outstanding September 30, 2017     1,212,669     $ 5.98       7.14     $  
Vested and expected to vest September 30, 2017     1,212,669     $ 5.98       7.14     $  
Exercisable September 30, 2017     747,788     $ 8.25       4.96     $  

 

Stock option activity for non-employees:

 

    Number of Options     Weighted Average Exercise
Price
    Weighted Average Remaining Contractual Term (Years)     Aggregate Intrinsic
Value
 
Outstanding January 1, 2017     271,500     $ 10.41       4.66     $  
Granted     605,877       0.42              
Exercised                        
Forfeited     (40,313 )     19.67              
Outstanding September 30, 2017     837,065     $ 2.73       6.93     $  
Vested and expected to vest September 30, 2017     837,065     $ 2.73       6.93     $  
Exercisable September 30, 2017     278,775     $ 7.34       5.00     $  

Schedule of Unvested Stock Option Activity

Unvested stock option activity for employees:

 

    Number of Options     Weighted Average Exercise
Price
    Average Remaining Contractual Term (Years)     Aggregate Intrinsic
Value
 
Outstanding January 1, 2017     90,625     $ 1.72       9.33     $  
Granted     584,795       0.50              
Vested     (210,539 )     1.05              
Forfeited                        
Outstanding September 30, 2017     464,881     $ 0.49       9.86     $  

 

Unvested stock option activity for non-employees:

 

    Number of Options     Weighted Average Exercise
Price
    Weighted Average Remaining Contractual Term (Years)    

Aggregate Intrinsic

Value

 
Outstanding January 1, 2017     26,389     $ 1.65       8.61     $  
Granted     605,877       0.42              
Vested     (71,198 )     0.82              
Forfeited     (2,778 )     1.56              
Outstanding September 30, 2017     558,290     $ 0.42       7.82     $