Property, Plant and Equipment (Tables)

12 Months Ended

Dec. 31, 2022

Property, Plant and Equipment

Schedule of property, plant and equipment

December 31,	2022		2021
(in thousands)
Land	$	17,287	$	18,180
Buildings and leasehold improvements		120,506		120,649
Operating equipment		683,027		606,089
Computer software		22,194		22,925
Furniture and fixtures		5,480		6,222
Vehicles		259,933		243,647
Gross property, plant and equipment		1,108,427		1,017,712
Less: accumulated depreciation		(775,334)		(763,304)
Net property, plant and equipment	$	333,093	$	254,408