Retirement Plans (Tables)

6 Months Ended

Jun. 28, 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
	June 28, 2014									June 29, 2013
	Domestic Plans			Foreign Plans			OPEB Plans			Domestic Plans			Foreign Plans			OPEB Plans
Net periodic benefit cost:
Service cost	$	323		$	606		$	3		$	268		$	704		$	3
Interest cost	788			924			49			721			945			49
Expected return on assets	(1,018		)	(1,095		)	—			(887		)	(979		)	—
Amortization of unrecognized:
Prior service costs (credits)	3			5			(2		)	—			5			—
Cumulative actuarial net loss (gains)	—			14			(11		)	49			131			2
Net periodic benefit cost	$	96		$	454		$	39		$	151		$	806		$	54

	Six Months Ended
	June 28, 2014									June 29, 2013
	Domestic Plans			Foreign Plans			OPEB Plans			Domestic Plans			Foreign Plans			OPEB Plans
Net periodic benefit cost:
Service cost	$	645		$	1,197		$	6		$	535		$	1,421		$	7
Interest cost	1,576			1,827			98			1,442			1,907			99
Expected return on assets	(2,036		)	(2,164		)	—			(1,774		)	(1,976		)	—
Amortization of unrecognized:
Prior service costs (credits)	6			10			(4		)	—			10			—
Cumulative actuarial net loss (gains)	—			28			(22		)	98			264			4
Net periodic benefit cost	$	191		$	898		$	78		$	301		$	1,626		$	110