Postretirement benefits other than pension (Tables) (Other Postretirement Benefit Plan, Defined Benefit [Member])

3 Months Ended

Mar. 30, 2014

Other Postretirement Benefit Plan, Defined Benefit [Member]

Defined Benefit Plan Disclosure [Line Items]

Postretirement benefit costs for health care and life insurance

Post-retirement benefit costs for health care and life insurance are presented in the following table:

In thousands	Thirteen Weeks Ended
	Mar. 30, 2014			Mar. 31, 2013
Service cost-benefits earned during the period	$	118		$	175
Interest cost on net benefit obligation	1,485			1,525
Amortization of prior service credit	(2,367		)	(2,300		)
Amortization of actuarial loss	208			500
Net periodic post-retirement benefit credit	$	(556	)	$	(100	)