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Employee Benefit Plans
 3 Months Ended
Feb. 24, 2013
Compensation and Retirement Disclosure [Abstract]  
EMPLOYEE BENEFIT PLANS
EMPLOYEE BENEFIT PLANS
The following table summarizes the components of net periodic benefit cost (income) 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 24,
2013
 
February 26,
2012
 
February 24,
2013
 
February 26,
2012
 
(Dollars in thousands)
Net periodic benefit cost (income):
 
 
 
 
 
 
 
Service cost
$
2,281

 
$
2,247

 
$
94

 
$
99

Interest cost
13,066

 
14,413

 
1,239

 
1,659

Expected return on plan assets
(14,014
)
 
(13,009
)
 
—

 
—

Amortization of prior service benefit
(20
)
 
(20
)
 
(122
)
 
(4,089
)
Amortization of actuarial loss
4,218

 
3,142

 
1,691

 
1,289

Curtailment gain
—

 
(773
)
 
—

 
—

Net settlement loss
45

 
107

 
—

 
—

Net periodic benefit cost (income)
5,576

 
6,107

 
2,902

 
(1,042
)
Changes in accumulated other comprehensive loss:
 
 
 
 
 
 
 
Actuarial gain
—

 
(4
)
 
—

 
—

Amortization of prior service benefit
20

 
20

 
122

 
4,089

Amortization of actuarial loss
(4,218
)
 
(3,142
)
 
(1,691
)
 
(1,289
)
Curtailment loss
(440
)
 
(1
)
 
—

 
—

Net settlement loss
—

 
(51
)
 
—

 
—

Total recognized in accumulated other comprehensive loss
(4,638
)
 
(3,178
)
 
(1,569
)
 
2,800

Total recognized in net periodic benefit cost (income) and accumulated other comprehensive loss
$
938

 
$
2,929

 
$
1,333

 
$
1,758