Pension and Other Postretirement Benefits (Tables)

3 Months Ended

Mar. 30, 2014

Net Benefit Cost of Pension and Postretirement Benefit Plans

Net benefit cost of pension and postretirement benefit plans consisted of the following:

	Pension Three Months Ended						Other Postretirement Benefits Three Months Ended
	March 30, 2014			March 31, 2013			March 30, 2014		March 31, 2013
	(Dollars in thousands)
Service cost	$	450		$	465		$	138	$	164
Interest cost		4,483			4,139			597		999
Expected return on plan assets		(6,260	)		(5,770	)		—		—
Net amortization and deferral		1,071			1,410			26		730
Net benefit cost	$	(256	)	$	244		$	761	$	1,893