Property, Plant and Equipment

12 Months Ended

Dec. 31, 2023

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment

3. Property, Plant and Equipment

	Range of useful	December 31,
	lives in years	2023		2022
		(In Thousands)
Machinery, equipment and automotive (1)	3 - 25	$	1,324,323	$	1,283,429
Buildings and improvements	15 - 30		38,086		38,021
Land improvements	20 - 35		8,692		8,384
Furniture, fixtures and store equipment	3 - 30		2,726		2,438
Construction in progress	N/A		41,086		28,029
Capital spare parts	N/A		21,256		22,300
Land	N/A		4,567		4,567
			1,440,736		1,387,168
Less accumulated depreciation and amortization			605,438		538,507
		$	835,298	$	848,661

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(1) Machinery, equipment and automotive primarily includes the categories of property and equipment and estimated useful lives as follows: processing plants and plant infrastructure (15-25 years); certain processing plant components (3-10 years); and trucks, automobiles, trailers, and other rolling stock (4-7 years).