Retirement Plans (Tables)

6 Months Ended

Jul. 03, 2022

Defined Benefit Pension Plans

Net Periodic Pension and Postretirement Benefit Costs

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

	For the Three Months Ended
	July 3, 2022						July 4, 2021
	United States			Foreign			United States			Foreign
	(in thousands)
Service cost	$	397		$	180		$	452		$	245
Interest cost		1,221			120			1,096			88
Expected return on plan assets		(732	)		(18	)		(936	)		(17	)
Net actuarial gain		(45	)		—			(400	)		—
Total net periodic pension cost	$	841		$	282		$	212		$	316
	For the Six Months Ended
	July 3, 2022						July 4, 2021
	United States			Foreign			United States			Foreign
	(in thousands)
Service cost	$	794		$	386		$	905		$	491
Interest cost		2,443			238			2,196			175
Expected return on plan assets		(1,463	)		(38	)		(1,872	)		(33	)
Net actuarial gain		(45	)		—			(400	)		—
Total net periodic pension cost	$	1,729		$	586		$	829		$	633

Postretirement Benefit Plans

Net Periodic Pension and Postretirement Benefit Costs

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

	For the Three Months Ended						For the Six Months Ended
	July 3, 2022			July 4, 2021			July 3, 2022			July 4, 2021
	(in thousands)
Service cost	$	15		$	17		$	32		$	33
Interest cost		45			41			88			85
Amortization of prior service credit		(2	)		(2	)		(4	)		(4	)
Net actuarial loss (gain)		54			(228	)		54			(228	)
Total net periodic postretirement benefit cost (credit)	$	112		$	(172	)	$	170		$	(114	)