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Plant and Equipment
 3 Months Ended
Mar. 31, 2016
Property, Plant and Equipment [Abstract]  
Plant and Equipment
Plant and Equipment

The Partnership’s plant and equipment consist of the following (in thousands):
 
March 31,
2016
 
December 31,
2015
 
(Unaudited)
 
 
Plant and equipment at cost
$
77,565

 
$
92,203

Construction in process
1,323

 
1,074

Less accumulated depreciation
(21,444
)
 
(32,038
)
Total plant and equipment, net
$
57,444


$
61,239


Depreciation expense related to the Partnership's plant and equipment totaled $3.4 million and $4.5 million for the three months ended March 31, 2016 and 2015, respectively.