Commitments and Contingencies (Tables)

6 Months Ended

Jun. 30, 2017

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 six months of 2017 are as follows:

	Amount
	(In thousands)
Balance at the beginning of the period	$	116,658
Additions charged to expense, net		3,147
Payments, net		(646	)
Balance at the end of the period	$	119,159
Amounts recognized in the Condensed Consolidated
Balance Sheet at the end of the period:
Current liability	$	13,101
Noncurrent liability		106,058
Balance at the end of the period	$	119,159