PROPERTY, PLANT AND EQUIPMENT, NET

12 Months Ended

Dec. 31, 2018

Property, Plant and Equipment [Abstract]

Property, plant and equipment, net consisted of the following:



	December 31, 2018			December 31, 2017
Land	$	351,536		$	352,812
Process units, pipelines and equipment	3,741,133			3,414,372
Buildings and leasehold improvements	58,211			51,915
Computers, furniture and fixtures	126,929			110,968
Construction in progress	328,111			172,270
	4,605,920			4,102,337
Less—Accumulated depreciation	(785,028		)	(623,124		)
Total property, plant and equipment, net	$	3,820,892		$	3,479,213

Depreciation expense for the years ended December 31, 2018, 2017 and 2016 was $162,174, $146,978 and $116,629, respectively. The Company capitalized $9,469 and $7,156 in interest during 2018 and 2017, respectively, in connection with construction in progress.

Torrance Land Sale

On August 2018, the Company closed on a third-party sale of a parcel of real property acquired as part of the Torrance Refinery, but not part of the refinery itself. The sale resulted in a gain of $43,761 included within (Gain) loss on sale of assets within the Consolidated Statements of Operations.