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Pension and Other Postretirement Benefits (Tables)
 9 Months Ended
Aug. 27, 2016
Compensation and Retirement Disclosure [Abstract]  
Schedule of components of net periodic benefit costs (income) and company contributions
Components of net periodic benefit cost (income) and Company contributions for these plans were as follows:

 
 
Quarter Ended
 
Nine Months Ended
 
 
August 27,
2016
 
August 29,
2015
 
August 27,
2016
 
August 29,
2015
Pension Benefits:
 
 
 
 
 
 
 
 
Components of net periodic benefit cost (income):
 
 
 
 
 
 
 
 
Service cost
 
$
370

 
$
361

 
$
1,112

 
$
1,430

Interest cost
 
1,554

 
2,020

 
4,673

 
5,767

Expected return on plan assets
 
(2,579
)
 
(2,843
)
 
(7,757
)
 
(8,686
)
Curtailment
 
—

 
1

 
—

 
1

Amortization of unrecognized:
 
 
 
 
 
 
 
 
Prior service cost
 
—

 
(2
)
 
—

 
(4
)
Net actuarial loss
 
953

 
826

 
2,865

 
2,760

Net periodic benefit cost
 
$
298

 
$
363

 
$
893

 
$
1,268

 
 
 
 
 
 
 
 
 
Cash contributions
 
$
89

 
$
101

 
$
168

 
$
354

 
 
 
 
 
 
 
 
 
Postretirement Healthcare Benefits:
 
 
 
 
 
 
 
 
Components of net periodic benefit cost (income):
 
 
 
 
 
 
 
 
Interest cost
 
$
2

 
$
2

 
$
6

 
$
6

Amortization of unrecognized:
 
 
 
 
 
 
 
 
Prior service cost
 
(31
)
 
(31
)
 
(93
)
 
(93
)
Net actuarial gain
 
(23
)
 
(37
)
 
(69
)
 
(111
)
Net periodic benefit income
 
$
(52
)
 
$
(66
)
 
$
(156
)
 
$
(198
)
 
 
 
 
 
 
 
 
 
Cash contributions
 
$
11

 
$
15

 
$
33

 
$
45
Schedule of assumptions used
The actuarial assumptions used in measuring the net periodic benefit cost and plan obligations were as follows:
Qualified plans:
 
 
 
 
Weighted-average assumptions used to determine benefit obligation:
 
 
 
 
Discount rate
 
3.99%
 
3.75%
Rate of compensation increase
 
4.00%
 
4.00%
Weighted-average assumptions used to determine net periodic benefit cost:
 
 
 
 
Discount rate - interest cost
 
3.27%
 
3.75%
Discount rate - service cost
 
4.16%
 
3.75%
Rate of compensation increase
 
4.00%
 
4.00%
Long-term rate of return on plan assets
 
6.50%
 
7.00%
Measurement date
 
11/30/2015
 
11/30/2014
 
 
 
 
 
Nonqualified plans:
 
 
 
 
Weighted-average assumptions used to determine benefit obligation:
 
 
 
 
Discount rate
 
3.35%
 
3.00%
Rate of compensation increase
 
4.00%
 
4.00%
Weighted-average assumptions used to determine net periodic benefit cost:
 
 
 
 
Discount rate - interest cost
 
2.57%
 
3.00%
Discount rate - service cost
 
2.49%
 
3.00%
Rate of compensation increase
 
4.00%
 
4.00%
Measurement date
 
11/30/2015
 
11/30/2014
Schedule of expected contributions in benefit plans
The Company expects to contribute up to the following amounts to its various plans to pay benefits during 2016:

U.S. Qualified Plans
$
—

U.S. Combined Nonqualified Plans
159

Non-U.S. Plan
384

Postretirement Healthcare Benefit Plan
45

Total expected contributions
$
588