Retirement Plans (Tables)

9 Months Ended

Sep. 27, 2014

Compensation and Retirement Disclosure [Abstract]

Components of defined pension plan costs

Components of net periodic benefit cost for the Company’s defined benefit pension plans and OPEB plans are as follows (in thousands):

	Quarters Ended
	September 27, 2014									September 28, 2013
	Domestic Plans			Foreign Plans			OPEB Plans			Domestic Plans			Foreign Plans			OPEB Plans
Net periodic benefit cost:
Service cost	$	322		$	597		$	4		$	239		$	698		$	2
Interest cost	788			911			49			735			937			39
Expected return on assets	(1,017		)	(1,079		)	—			(887		)	(970		)	—
Amortization of unrecognized:
Prior service costs (credits)	3			4			(2		)	—			5			—
Cumulative actuarial net loss (gains)	—			14			(11		)	82			130			(10		)
Net periodic benefit cost	$	96		$	447		$	40		$	169		$	800		$	31

	Nine Months Ended
	September 27, 2014									September 28, 2013
	Domestic Plans			Foreign Plans			OPEB Plans			Domestic Plans			Foreign Plans			OPEB Plans
Net periodic benefit cost:
Service cost	$	967		$	1,794		$	10		$	774		$	2,119		$	9
Interest cost	2,364			2,738			147			2,177			2,844			138
Expected return on assets	(3,053		)	(3,243		)	—			(2,661		)	(2,946		)	—
Amortization of unrecognized:
Prior service costs (credits)	9			14			(6		)	—			15			—
Cumulative actuarial net loss (gains)	—			42			(33		)	180			394			(6		)
Net periodic benefit cost	$	287		$	1,345		$	118		$	470		$	2,426		$	141