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Property, Plant and Equipment
 12 Months Ended
Dec. 31, 2021
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,
20212020
Land$14,533 $14,533 
Building and building improvements2,742 2,742 
Pipelines, tanks and terminals654,154 606,116 
Asset retirement obligation assets2,073 2,073 
Other equipment30,774 30,803 
Construction in process11,594 36,015 
Property, plant and equipment715,870 692,282 
Less: accumulated depreciation(266,482)(227,470)
Property, plant and equipment, net$449,388 $464,812 
Property, plant and equipment, accumulated depreciation and depreciation expense for the pipelines and transportation and wholesale marketing and terminalling reportable segments as of and for the years ended December 31, 2021 and 2020 are as follows (in thousands):
As of and For the Year Ended December 31, 2021
Pipelines and TransportationWholesale Marketing and TerminallingConsolidated
Property, plant and equipment$595,031 $120,839 $715,870 
Less: accumulated depreciation(205,825)(60,657)(266,482)
Property, plant and equipment, net$389,206 $60,182 $449,388 
Depreciation expense$30,982 $11,788 $42,770 
As of and For the Year Ended December 31, 2020
Pipelines and TransportationWholesale Marketing and TerminallingConsolidated
Property, plant and equipment$580,631 $111,651 $692,282 
Less: Accumulated depreciation(176,020)(51,450)(227,470)
Property, plant and equipment, net$404,611 $60,201 $464,812 
Depreciation expense$27,682 $8,049 $35,731