Commitments and Contingencies (Tables)

9 Months Ended

Sep. 30, 2018

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 2018 are as follows:

	Amount
	(In thousands)
Balance at the beginning of the period	$	111,909
Additions charged to expense, net		2,671
Payments, net		(3,098	)
Balance at the end of the period	$	111,482
Amounts recognized in the Condensed Consolidated
Balance Sheet at the end of the period:
Current liability	$	17,762
Noncurrent liability		93,720
Balance at the end of the period	$	111,482