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Description of Business and Basis of Presentation (tables)
 3 Months Ended
Mar. 31, 2014
Accounting Policies [Abstract]  
Assets Table
As of March 31, 2014, WES’s assets and investments accounted for under the equity method consisted of the following:
 
 
Owned and
Operated
 
Operated
Interests
 
Non-Operated
Interests
 
Equity Interests
Natural gas gathering systems
 
13

 
1

 
5

 
2

NGL gathering systems
 
—

 
—

 
—

 
2

Natural gas treating facilities
 
8

 
—

 
—

 
1

Natural gas processing facilities
 
8

 
3

 
—

 
2

NGL pipelines
 
3

 
—

 
—

 
2

Natural gas pipelines
 
3

 
—

 
—

 
—

Oil pipeline
 
—

 
—

 
—

 
1
Equity-Method Investments Table
The following table presents the activity of WES’s equity investments in Fort Union, White Cliffs, Rendezvous, the Mont Belvieu JV, TEG, TEP and FRP:
 
Equity Investments
thousands
Fort 
Union
 
White
Cliffs
 
Rendezvous
 
Mont
Belvieu JV
 
TEG
 
TEP
 
FRP
Balance at December 31, 2013
$
25,172

 
$
35,039

 
$
60,928

 
$
122,480

 
$
16,649

 
$
197,731

 
$
135,401

Investment earnings (loss), net of amortization
1,501

 
2,227

 
244

 
7,124

 
192

 
(874
)
 
(1,163
)
Contributions
—

 
2,500

 
—

 
(1,919
)
 
352

 
187

 
20,992

Capitalized interest
—

 
—

 
—

 
—

 
—

 
—

 
857

Distributions
(1,016
)
 
(2,082
)
 
(729
)
 
(6,200
)
 
(242
)
 
—

 
—

Distributions in excess of cumulative earnings (1)
—

 
(581
)
 
(859
)
 
—

 
(163
)
 
(541
)
 
—

Balance at March 31, 2014
$
25,657

 
$
37,103

 
$
59,584

 
$
121,485

 
$
16,788

 
$
196,503

 
$
156,087

                                                                                                                                                                                   
(1) 
Distributions in excess of cumulative earnings, classified as investing cash flows in the consolidated statements of cash flows, is calculated on an individual investment basis.