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PROPERTY, PLANT AND EQUIPMENT, NET
 12 Months Ended
Dec. 31, 2017
Property, Plant and Equipment [Abstract]  
PROPERTY, PLANT AND EQUIPMENT, NET
PROPERTY, PLANT AND EQUIPMENT, NET
Property, plant and equipment, net consisted of the following: 
 
 
December 31,
2017
 
December 31,
2016
Land
 
$
253,105

 
$
253,110

Process units, pipelines and equipment
 
2,799,360

 
2,504,008

Buildings and leasehold improvements
 
50,001

 
49,020

Computers, furniture and fixtures
 
105,921

 
81,780

Construction in progress
 
167,460

 
289,338

 
 
3,375,847

 
3,177,256

Less—Accumulated depreciation
 
(570,457
)
 
(448,557
)
Total property, plant and equipment, net
 
$
2,805,390

 
$
2,728,699


Depreciation expense for the years ended December 31, 2017, 2016 and 2015 was $123,257, $104,293 and $88,474, respectively. The Company capitalized $5,937 and $8,333 in interest during 2017 and 2016, respectively, in connection with construction in progress.