Pension Plans (Tables)

9 Months Ended

Sep. 30, 2022

Retirement Benefits [Abstract]

Components of net periodic pension cost

The components of net periodic pension cost for these defined benefit pension plans are as follows:

	For the Three Months Ended September 30,				For the Nine Months Ended September 30,
	2022		2021		2022		2021
	(In thousands)
Service cost	$	4,760	$	6,548	$	15,266	$	20,083
Interest cost	1,131		1,199		3,593		3,682
Expected return on plan assets	(1,339)		(1,384)		(4,260)		(4,247)
Recognized actuarial loss	13		32		39		96
Net periodic pension cost	$	4,565	$	6,395	$	14,638	$	19,614

Summary of defined contribution expense

The following table summarizes our defined contribution expense:

	For the Three Months Ended September 30,				For the Nine Months Ended September 30,
	2022		2021		2022		2021
	(In thousands)
Defined contribution expense	$	4,893	$	4,807	$	18,395	$	16,803