Property And Equipment (Tables)

12 Months Ended

Dec. 31, 2020

Property And Equipment [Abstract]

Schedule Of Components Of Property And Equipment

The components of property and equipment are as follows (in thousands):

	December 31,
	2020		2019
Plant equipment	$	940,363	$	911,097
Buildings and improvements		170,813		168,309
Land and improvements		86,909		92,321
Railroad track and equipment		34,637		34,404
Construction-in-progress		48,378		60,262
Computer hardware and software		20,477		19,368
Office furniture and equipment		3,797		3,716
Leasehold improvements and other		26,510		24,471
Total property and equipment		1,331,884		1,313,948
Less: accumulated depreciation and amortization		(530,194)		(486,677)
Property and equipment, net	$	801,690	$	827,271