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Equity Investments
 6 Months Ended
Jun. 30, 2016
Equity Method Investments and Joint Ventures [Abstract]  
Equity Investments
7.  EQUITY INVESTMENTS

The following table presents the activity of WES’s equity investments for the six months ended June 30, 2016:
 
Equity Investments
thousands
Fort
Union
 
White
Cliffs
 
Rendezvous
 
Mont
Belvieu JV
 
TEG
 
TEP
 
FRP
 
Total
Balance at December 31, 2015
$
17,122

 
$
50,439

 
$
50,913

 
$
117,089

 
$
16,283

 
$
194,803

 
$
172,238

 
$
618,887

Investment earnings (loss), net of amortization
(1,360
)
 
7,164

 
949

 
12,686

 
343

 
7,766

 
8,959

 
36,507

Contributions
—

 
441

 
—

 
—

 
—

 
(580
)
 
—

 
(139
)
Distributions
—

 
(6,873
)
 
(1,364
)
 
(12,303
)
 
(354
)
 
(7,892
)
 
(9,733
)
 
(38,519
)
Distributions in excess of cumulative earnings (1)
(3,354
)
 
(2,100
)
 
(1,541
)
 
(172
)
 
(188
)
 
(2,918
)
 
(338
)
 
(10,611
)
Balance at June 30, 2016
$
12,408

 
$
49,071

 
$
48,957

 
$
117,300

 
$
16,084

 
$
191,179

 
$
171,126

 
$
606,125

(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.

During the six months ended June 30, 2016, an impairment loss was recognized by the managing partner of Fort Union. WES’s 14.81% share of the impairment loss was $3.0 million, which was recorded in Equity income, net – affiliates in the consolidated statements of operations.