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Equity Based Compensation (Tables)
12 Months Ended
Dec. 31, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Schedule of Share-based Compensation, Phantom Units Award Activity [Table Text Block]
A summary of our unit award activity for the twelve months ended December 31, 2012 is set forth below:

 
 
Number of Phantom Units
 
Weighted-Average Grant Price
Non-vested
December 31, 2011

 

Granted
 
494,883

 
$
22.65

Vested
 

 

Forfeited
 

 

Non-vested
December 31, 2012
494,883

 
$
22.65