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Performance Awards (Tables)
 3 Months Ended
Mar. 31, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Schedule of Performance Activity
The following table summarizes performance awards granted under the 2014 EIP in November 2017, 2016 and 2015: 
Grant Date
 
Grant Amount
 
Adjustments
 
Forfeitures
 
Payments
 
Adjusted Award Value at
March 31, 2018
 
Vesting Schedule
 
Remaining Periods (in Months) to Vesting
November 2015
 
$
1,487

 
$
627

 
$
(197
)
 
$
—

 
$
1,917

 
October 2018
 
7
November 2016
 
1,434

 
(46
)
 
(37
)
 
—

 
1,351

 
October 2019
 
19
November 2017
 
1,584

 
(91
)
 
—

 
—

 
1,493

 
October 2020
 
31
 
 
$
4,505

 
$
490

 
$
(234
)
 
$
—

 
$
4,761