Properties And Equipment (Tables)

12 Months Ended

Dec. 31, 2020

Properties And Equipment [Abstract]

Schedule Of Properties And Equipment

		December 31,
		2020		2019
Land	$	9,385	$	8,360
Buildings and building improvements		117,419		109,404
Transportation equipment		68,379		41,897
Machinery and equipment		129,835		123,102
Computer software		62,138		57,508
Furniture and fixtures		78,507		79,792
Projects under development		15,537		25,840
Total properties and equipment		481,200		445,903
Less accumulated depreciation		(293,380)		(270,140)
Net properties and equipment	$	187,820	$	175,763