Retirement Plans (Tables)

3 Months Ended

Apr. 03, 2022

Defined Benefit Pension Plans

Net Periodic Pension and Postretirement Benefit Costs

For the three months ended April 3, 2022 and April 4, 2021, Teradyne’s net periodic pension cost was comprised of the following:

	For the Three Months Ended
	April 3, 2022						April 4, 2021
	United States			Foreign			United States			Foreign
	(in thousands)
Service cost	$	397		$	206		$	453		$	243
Interest cost		1,222			118			1,100			87
Expected return on plan assets		(732	)		(20	)		(936	)		(16	)
Total net periodic pension cost	$	887		$	304		$	617		$	314

Postretirement Benefit Plans

Net Periodic Pension and Postretirement Benefit Costs

For the three months ended April 3, 2022 and April 4, 2021, Teradyne’s net periodic postretirement benefit cost was comprised of the following:

	For the Three Months Ended
	April 3, 2022			April 4, 2021
	(in thousands)
Service cost	$	17		$	16
Interest cost		44			44
Amortization of prior service credit		(2	)		(2	)
Total net periodic postretirement benefit cost	$	59		$	58