Commitments and contingencies (Tables)

6 Months Ended

Jun. 30, 2023

Commitments and contingencies

Schedule of Changes in Accrued Environmental Remediation and Related Costs

	Amount
	(In thousands)
Balance at the beginning of the period	$	92,358
Additions charged to expense, net		65
Payments, net		(1,064)
Balance at the end of the period	$	91,359
Amounts recognized in the Condensed Consolidated
Balance Sheet at the end of the period:
Current liability	$	1,850
Noncurrent liability		89,509
Balance at the end of the period	$	91,359