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Equity-Based Compensation (Tables)
9 Months Ended
Sep. 30, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Disclosure of Share-based Compensation Arrangements by Share-based Payment Award [Table Text Block]
A summary of our unit award activity for the nine months ended September 30, 2014, is set forth below:
 
Number of Phantom Units
 
Weighted Average
Grant Date
Fair Value
Nonvested at December 31, 2013
10,908

 
$
22.00

Awards granted
281,897

 
28.43

Awards vested

 

Awards forfeited
(13,559
)
 
33.02

Nonvested at September 30, 2014
279,246

 
27.95