PROPERTY AND EQUIPMENT.

12 Months Ended

Dec. 31, 2019

Property, Plant and Equipment [Abstract]

PROPERTY AND EQUIPMENT

5. PROPERTY AND EQUIPMENT.

Property and equipment consisted of the following (in thousands):

	December 31,
	2019			2018
Facilities and plant equipment	$	495,513		$	621,909
Land		7,219			8,970
Other equipment, vehicles and furniture		11,229			11,812
Construction in progress		15,793			30,312
		529,754			673,003
Accumulated depreciation		(197,228	)		(190,346	)
	$	332,526		$	482,657

Depreciation expense was $40,931,000 and $40,849,000 for the years ended December 31, 2019 and 2018, respectively.

For the year ended December 31, 2019 and 2018, the Company capitalized interest of $563,000 and $1,170,000, respectively, related to its capital investment activities.