Pension Plans (Tables)

3 Months Ended

Mar. 31, 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 March 31,
	2022		2021
	(In thousands)
Service cost	$	5,418	$	6,787
Interest cost	1,258		1,242
Expected return on plan assets	(1,493)		(1,429)
Recognized actuarial loss	13		31
Net periodic pension cost	$	5,196	$	6,631

Summary of defined contribution expense

The following table summarizes our defined contribution expense:

	For the Three Months Ended March 31,
	2022		2021
	(In thousands)
Defined contribution expense	$	7,948	$	6,756