Workers Compensation Expense (Tables)

6 Months Ended

Jun. 30, 2018

Workers’ compensation expense consists of the following components:



	Three Months Ended June 30,				Six Months Ended June 30,
	2018		2017		2018		2017
	(In thousands)
Self-insured occupational disease benefits:
Service cost	$	1,860	$	1,559	$	3,720	$	3,117
Interest cost⁽¹⁾	1,194		1,168		2,389		2,337
Total occupational disease	$	3,054	$	2,727	$	6,109	$	5,454
Traumatic injury claims and assessments	2,188		2,532		5,199		5,410
Total workers’ compensation expense	$	5,242	$	5,259	$	11,308	$	10,864

(1) In accordance with the adoption of ASU 2017-07, “Compensation-Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost,” these costs are recorded within Nonoperating expenses in the Condensed Consolidated Income Statements on the line item “Non-service related pension and postretirement benefit costs.” For additional information about the adoption of the standard, see Note 2, “Accounting Policies” in the Condensed Consolidated Financial Statements.