Postretirement benefits

6 Months Ended

Jun. 30, 2023

Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Abstract]

Postretirement benefits

We have historically provided certain health care benefits for eligible retired U.S. employees. In addition to our retiree health care plan, we also have a U.S. supplemental executive retirement plan. Further information regarding our postretirement benefit plans can be found under the caption “Note 12: Postretirement Benefits” in the Notes to Consolidated Financial Statements appearing in the 2022 Form 10-K.

Postretirement benefit income is included in other income on the consolidated statements of comprehensive income and consisted of the following components:

	Quarter Ended June 30,				Six Months Ended June 30,
(in thousands)	2023		2022		2023		2022
Interest cost	$	496	$	280	$	993	$	561
Expected return on plan assets	(1,830)		(1,866)		(3,660)		(3,731)
Amortization of prior service credit	(355)		(355)		(711)		(711)
Amortization of net actuarial losses	568		225		1,137		450
Net periodic benefit income	$	(1,121)	$	(1,716)	$	(2,241)	$	(3,431)