Property, Plant and Equipment

12 Months Ended

Dec. 31, 2022

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment

7. PROPERTY, PLANT AND EQUIPMENT

Property, plant and equipment consist of the following as of December 31 (in thousands):

	2022			2021
Machinery and equipment	$	529,975		$	471,667
Building and improvements		120,116			101,609
Forklifts and tractors		24,516			18,584
Computer equipment		16,182			15,022
Furniture and fixtures		6,180			2,283
Construction in process		161,035			87,700
Land		24,886			22,911
Total property, plant and equipment		882,890			719,776
Accumulated depreciation		(292,998	)		(259,411	)
Total property, plant and equipment, net	$	589,892		$	460,365

The Company had construction in process as of December 31, 2022 of approximately $161 million. The Company expects that substantially all of the above noted construction in process will be completed and put into service in the year ending December 31, 2025.

Depreciation expense for the years ended December 31, 2022, 2021, and 2020, totaled $43.9 million, $35.5 million, and $17.5 million, respectively.