Employee Benefit Plans (Tables)

3 Months Ended

Mar. 01, 2015

Compensation and Retirement Disclosure [Abstract]

Schedule of defined benefit plans disclosures

The following table summarizes the components of net periodic benefit cost and the changes recognized in “Accumulated other comprehensive loss” for the Company’s defined benefit pension plans and postretirement benefit plans:

	Pension Benefits						Postretirement Benefits
	Three Months Ended						Three Months Ended
	March 1, 2015			February 23, 2014			March 1, 2015			February 23, 2014
	(Dollars in thousands)
Net periodic benefit cost:
Service cost	$	2,128		$	2,159		$	63		$	68
Interest cost	11,840			13,761			1,147			1,338
Expected return on plan assets	(12,717		)	(13,843		)	—			—
Amortization of prior service benefit	(16		)	(17		)	—			(1		)
Amortization of actuarial loss	3,160			2,696			1,128			989
Curtailment loss	335			232			—			700
Net settlement loss	—			60			—			—
Net periodic benefit cost	4,730			5,048			2,338			3,094
Changes in accumulated other comprehensive loss:
Amortization of prior service benefit	16			17			—			1
Amortization of actuarial loss	(3,160		)	(2,696		)	(1,128		)	(989		)
Curtailment loss	(335		)	—			—			—
Net settlement loss	—			(25		)	—			—
Total recognized in accumulated other comprehensive loss	(3,479		)	(2,704		)	(1,128		)	(988		)
Total recognized in net periodic benefit cost and accumulated other comprehensive loss	$	1,251		$	2,344		$	1,210		$	2,106