Commitments and Contingencies (Tables)

9 Months Ended

Sep. 30, 2021

Commitments And Contingencies Disclosure [Abstract]

Changes in Accrued Environmental Remediation and Related Costs

Changes in the accrued environmental remediation and related costs during the first nine months of 2021 are as follows:

	Amount
	(In thousands)
Balance at the beginning of the period	$	93,416
Additions charged to expense, net		569
Payments, net		(995	)
Balance at the end of the period	$	92,990
Amounts recognized in the Condensed Consolidated
Balance Sheet at the end of the period:
Current liability	$	2,583
Noncurrent liability		90,407
Balance at the end of the period	$	92,990