12 Retirement Plans

The Company sponsors various retirement plans. The Company adopted new accounting guidance which requires that an employer disaggregate the service cost component from other components of net benefit cost. As a result of the adoption of this standard, the components of net periodic benefit cost other than the service cost component are included in other income in the consolidated statements of operations and all previous periods have been adjusted accordingly. The summary of the components of net periodic pension costs for the plans for the three and nine months ended September 29, 2018 and September 30, 2017 is as follows (in thousands):


	Three Months Ended
	September 29, 2018									September 30, 2017
	U.S.			U.S. Retiree			Non-U.S.			U.S.			U.S. Retiree			Non-U.S.
	Pension			Healthcare			Pension			Pension			Healthcare			Pension
	Plans			Plan			Plans			Plans			Plan			Plans
Service cost	$	142		$	142		$	1,311		$	113		$	137		$	1,311
Interest cost		1,622			159			406			1,707			155			386
Expected return on plan assets		(1,708	)		(177	)		(486	)		(2,574	)		(146	)		(434	)
Net amortization:
Prior service credit		—			(4	)		(30	)		—			—			(47	)
Net actuarial loss		771			—			167			693			—			248

Net periodic pension cost (benefit)	$	827		$	120		$	1,368		$	(61	)	$	146		$	1,464


	Nine Months Ended
	September 29, 2018									September 30, 2017
	U.S.			U.S. Retiree			Non-U.S.			U.S.			U.S. Retiree			Non-U.S.
	Pension			Healthcare			Pension			Pension			Healthcare			Pension
	Plans			Plan			Plans			Plans			Plan			Plans
Service cost	$	426		$	425		$	4,024		$	338		$	410		$	3,802
Interest cost		4,868			477			1,250			5,122			464			1,112
Expected return on plan assets		(5,123	)		(530	)		(1,442	)		(7,724	)		(440	)		(1,250	)
Net amortization:
Prior service credit		—			(14	)		(93	)		—			—			(140	)
Net actuarial loss		2,312			—			515			2,078			—			714

Net periodic pension cost (benefit)	$	2,483		$	358		$	4,254		$	(186	)	$	434		$	4,238

In 2018, the Company’s board of directors approved the termination of its frozen U.S. defined benefit pension plans. The Company anticipates that it will take three to six months to settle all of these plans’ obligations and, during this timeframe, the Company may incur pension accounting charges in connection with the termination of these plans.

During the three and nine months ended September 29, 2018, the Company contributed $5 million to the non-U.S. pension plans. During fiscal year 2018, the Company expects to contribute a total of approximately $5 million to $10 million to the Company’s defined benefit plans for all plans, excluding its U.S. defined benefit pension plans.