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Acquisitions (Tables)
 9 Months Ended
Sep. 30, 2017
Acquisitions [Abstract]  
Summary of the Allocation of the Relative Fair Value Assigned to Asset Groups
The following table summarizes the allocation of the relative fair value assigned to the asset groups for the Big Spring Pipeline (in thousands):

Property, plant and equipment
 
$
6,443

Intangible assets (1)
 
2,560

     Total
 
$
9,003


(1) Intangible assets acquired represent rights-of-way assets with indefinite useful lives. Rights-of-way assets are not subject to amortization.