Benefit Obligations (Tables)

3 Months Ended

Mar. 31, 2013

Defined Benefit Pension Plans And Defined Benefit Postretirement Plans Disclosure [Abstract]

Components of Net Periodic Benefit Cost

The following table summarizes the components of the net periodic benefit cost:

	Three Months Ended
	March 31, 2013						April 1, 2012
	Pension Benefits			Post-retirement Benefits			Pension Benefits			Post-retirement Benefits
	(In thousands)
Service cost	$	123		$	25		$	109		$	25
Interest cost		14,270			600			15,252			650
Expected return on plan assets		(16,581	)		(875	)		(17,023	)		(1,050	)
Amortization of net actuarial loss, prior service cost and transition asset		4,669			375			3,469			500
Total benefit cost	$	2,481		$	125		$	1,807		$	125