Retirement Plans (Tables)

9 Months Ended

Oct. 03, 2015

Compensation and Retirement Disclosure [Abstract]

Components of defined pension plan costs

Components of net periodic benefit cost for the Company’s Domestic Plans, Foreign Plans and OPEB Plans are as follows (in thousands):

	Quarters Ended
	October 3, 2015									September 27, 2014
	Domestic Plans			Foreign Plans			OPEB Plans			Domestic Plans			Foreign Plans			OPEB Plans
Service cost	$	330		$	610		$	4		$	322		$	597		$	4
Interest cost	805			753			43			788			911			49
Expected return on assets	(972		)	(893		)	—			(1,017		)	(1,079		)	—
Amortization of unrecognized:
Prior service costs (credits)	2			6			(1		)	3			4			(2		)
Cumulative actuarial net loss (gains)	105			57			(4		)	—			14			(11		)
Net periodic benefit cost	$	270		$	533		$	42		$	96		$	447		$	40

	Nine Months Ended
	October 3, 2015									September 27, 2014
	Domestic Plans			Foreign Plans			OPEB Plans			Domestic Plans			Foreign Plans			OPEB Plans
Service cost	$	992		$	1,900		$	10		$	967		$	1,794		$	10
Interest cost	2,417			2,346			130			2,364			2,738			147
Expected return on assets	(2,918		)	(2,783		)	—			(3,053		)	(3,243		)	—
Amortization of unrecognized:
Prior service costs (credits)	8			17			(5		)	9			14			(6		)
Cumulative actuarial net loss (gains)	313			176			(14		)	—			42			(33		)
Net periodic benefit cost	$	812		$	1,656		$	121		$	287		$	1,345		$	118