Property And Equipment

12 Months Ended

Dec. 31, 2022

Property, Plant and Equipment [Abstract]

PROPERTY AND EQUIPMENT

6. PROPERTY AND EQUIPMENT.

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

	December 31,
	2022			2021
Facilities and plant equipment	$	386,932		$	364,039
Land		3,687			4,072
Other equipment, vehicles and furniture		9,876			7,656
Construction in progress		37,538			22,505
		438,033			398,272
Accumulated depreciation		(198,964	)		(175,722	)
	$	239,069		$	222,550

Depreciation expense was $24,528,000, $23,292,000 and $30,268,000 for the years ended December 31, 2022, 2021 and 2020, respectively.

The Company capitalized interest of $720,000, $628,000 and $224,000 for the years ended December 31, 2022, 2021 and 2020, respectively, related to its capital investment activities.