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Property, Plant and Equipment
12 Months Ended
Dec. 31, 2018
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment Property, Plant and Equipment
Property, plant and equipment, at cost, consist of the following (in thousands):
 
 
December 31,
 
 
2018
 
2017
 
 
 
 
 
Land
 
$
4,458

 
$
4,440

Building and building improvements
 
3,695

 
2,804

Pipelines, tanks and terminals
 
410,154

 
314,251

Asset retirement obligation assets
 
2,073

 
2,073

Other equipment
 
15,838

 
14,650

Construction in process
 
16,528

 
28,961

 
 
452,746

 
367,179

Less: accumulated depreciation
 
(140,184
)
 
(112,111
)
 
 
$
312,562

 
$
255,068


Property, plant and equipment, accumulated depreciation and depreciation expense by reporting segment as of and for the years ended December 31, 2018 and 2017 are as follows (in thousands):
 
 
As of and For the Year Ended December 31, 2018
 
 
Pipelines and Transportation
 
Wholesale Marketing and Terminalling
 
Consolidated
Property, plant and equipment
 
$
361,702

 
$
91,044

 
$
452,746

Less: accumulated depreciation
 
(106,971
)
 
(33,213
)
 
(140,184
)
Property, plant and equipment, net
 
$
254,731

 
$
57,831

 
$
312,562

Depreciation expense
 
$
21,115

 
$
4,786

 
$
25,901


 
 
As of and For the Year Ended December 31, 2017
 
 
Pipelines and Transportation
 
Wholesale Marketing and Terminalling
 
Consolidated
Property, plant and equipment
 
$
300,134

 
$
67,045

 
$
367,179

Less: Accumulated depreciation
 
(84,435
)
 
(27,676
)
 
(112,111
)
Property, plant and equipment, net
 
$
215,699

 
$
39,369

 
$
255,068

Depreciation expense
 
$
17,268

 
$
3,583

 
$
20,851