Retirement Plans (Tables)

6 Months Ended

Jul. 05, 2015

Postretirement Benefit Plans

Net Periodic Pension and Postretirement Benefit Income Costs

For the three and six months ended July 5, 2015 and June 29, 2014, Teradyne’s net periodic pension cost was comprised of the following:

	For the Three Months Ended
	July 5, 2015						June 29, 2014
	United States			Foreign			United States			Foreign
	(in thousands)
Service cost	$	615		$	263		$	563		$	248
Interest cost		3,289			385			3,223			509
Expected return on plan assets		(3,634	)		(215	)		(3,125	)		(259	)
Amortization of prior service cost		34			—			34			—
Actuarial (gain) loss		(3	)		—			362			—
Total net periodic pension cost	$	301		$	433		$	1,057		$	498

	For the Six Months Ended
	July 5, 2015						June 29, 2014
	United States			Foreign			United States			Foreign
	(in thousands)
Service cost	$	1,231		$	510		$	1,109		$	498
Interest cost		6,571			744			6,438			1,014
Expected return on plan assets		(7,259	)		(410	)		(6,250	)		(475	)
Amortization of prior service cost		67			—			67			—
Actuarial (gain) loss		(3	)		—			362			—
Total net periodic pension cost	$	607		$	844		$	1,726		$	1,037

Defined Benefit Pension Plans

Net Periodic Pension and Postretirement Benefit Income Costs

For the three and six months ended July 5, 2015 and June 29, 2014, Teradyne’s net periodic postretirement benefit income was comprised of the following:

	For the Three Months Ended						For the Six Months Ended
	July 5, 2015			June 29, 2014			July 5, 2015			June 29, 2014
	(in thousands)
Service cost	$	12		$	17		$	24		$	29
Interest cost		59			82			118			168
Amortization of prior service benefit		(150	)		(150	)		(299	)		(299	)
Actuarial gain		(19	)		(247	)		(19	)		(247	)
Total net periodic post-retirement benefit	$	(98	)	$	(298	)	$	(176	)	$	(349	)