Employee Benefit Plans

3 Months Ended

Feb. 28, 2016

Compensation and Retirement Disclosure [Abstract]

EMPLOYEE BENEFIT PLANS

EMPLOYEE BENEFIT PLANS

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
	February 28, 2016			March 1, 2015			February 28, 2016			March 1, 2015
	(Dollars in thousands)
Net periodic benefit cost:
Service cost	$	2,058		$	2,128		$	50		$	63
Interest cost(1)	9,472			11,840			806			1,147
Expected return on plan assets	(12,134		)	(12,717		)	—			—
Amortization of prior service benefit	(15		)	(16		)	—			—
Amortization of actuarial loss	3,007			3,160			742			1,128
Curtailment loss	—			335			—			—
Net periodic benefit cost	2,388			4,730			1,598			2,338
Changes in accumulated other comprehensive loss:
Actuarial loss	152			—			—			—
Amortization of prior service benefit	15			16			—			—
Amortization of actuarial loss	(3,007		)	(3,160		)	(742		)	(1,128		)
Curtailment loss	—			(335		)	—			—
Total recognized in accumulated other comprehensive loss	(2,840		)	(3,479		)	(742		)	(1,128		)
Total recognized in net periodic benefit cost and accumulated other comprehensive loss	$	(452	)	$	1,251		$	856		$	1,210

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(1) The decrease in interest cost is primarily due to the election made at the end of 2015 to adopt the spot-rate approach to determine the interest cost component of pension and postretirement expense.