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Performance Awards - Schedule of Performance Activity (Details) - USD ($)
$ in Thousands
9 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]    
Unrecognized Compensation $ 2,100  
Performance Awards    
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]    
Unrecognized Compensation 1,362 $ 1,200
2014 EIP | Performance Awards    
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]    
Grant Amount 5,008  
Forfeitures/ Adjustments (1,826)  
Payments 0  
Grant value 3,182  
2014 EIP | November 2014 | Performance Awards    
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]    
Grant Amount 2,087  
Forfeitures/ Adjustments (1,592)  
Payments 0  
Grant value 495  
Unrecognized Compensation $ 0  
Remaining Periods (in Months) to Vesting 1 month  
2014 EIP | November 2015 | Performance Awards    
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]    
Grant Amount $ 1,487  
Forfeitures/ Adjustments (197)  
Payments 0  
Grant value 1,290  
Unrecognized Compensation $ 430  
Remaining Periods (in Months) to Vesting 13 months  
2014 EIP | November 2016 | Performance Awards    
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]    
Grant Amount $ 1,434  
Forfeitures/ Adjustments (37)  
Payments 0  
Grant value 1,397  
Unrecognized Compensation $ 932  
Remaining Periods (in Months) to Vesting 25 months