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Equity-Based Compensation (Tables)
9 Months Ended
Sep. 30, 2016
Employees [Member]  
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]  
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, 2016     893,771     $ 18.96       4.02     $  
Granted     185,417       1.58              
Forfeited     (227,259 )     5.75              
Outstanding September 30, 2016     851,929     $ 18.70       4.05     $  
Vested and expected to vest September 30, 2016     851,929     $ 18.70       4.05     $  
Exercisable September 30, 2016     714,950     $ 18.60       2.87     $
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, 2016     27,777     $ 3.48       7.82     $  
Granted     185,417       1.58              
Vested     (76,215 )     2.10                
Forfeited                        
Outstanding September 30, 2016     136,979     $ 1.67       9.35     $  
Non-Employees [Member]  
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]  
Schedule of stock option activity

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, 2016     275,250     $ 15.48       4.31     $  
Granted     62,500       1.63              
Exercised                        
Forfeited     (31,667 )     44.79              
Outstanding September 30, 2016     306,083     $ 9.59       5.21     $  
Vested and expected to vest September 30, 2016     306,083     $ 9.59       5.21     $  
Exercisable September 30, 2016     257,819     $ 11.11       4.34     $  
Schedule of unvested stock option activity

Unvested stock option activity for non-employees during the year:

 

 

    Number of
Options
    Weighted
Average
Exercise
Price
    Average
Remaining
Contractual
Term
(Years)
    Aggregate
Intrinsic
Value
 
Outstanding January 1, 2016         $           $  
Granted     62,500       1.63              
Vested     (14,236)       1.63              
Forfeited                        
Outstanding September 30, 2016     48,264     $ 1.63       9.82     $