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Pension and Other Postretirement Plans (Tables)
 12 Months Ended
Dec. 03, 2016
Compensation and Retirement Disclosure [Abstract]  
Schedule of net funded status
The following tables show reconciliations of the changes in benefit obligations and plan assets for our pension plans and other postretirement benefits plan as of November 30, 2016 and 2015.  The accrued pension benefit obligation includes an unfunded benefit obligation of $2,000 and $2,041 as of November 30, 2016 and 2015, respectively, related to the Company’s U.S. combined nonqualified plans.

 
Pension Benefits
 
Other Postretirement Benefits
 
2016
 
2015
 
2016
 
2015
Change in benefit obligation
 
 
 
 
 
 
 
Benefit obligation at beginning of year
$
195,516

 
$
204,982

 
$
341

 
$
397

Currency translation
(1,711
)
 
(450
)
 
—

 
—

Service cost
1,481

 
1,905

 
—

 
—

Interest cost
6,197

 
7,676

 
8

 
12

Plan participants' contributions
15

 
18

 
—

 
—

Curtailment
—

 
(2,193
)
 
—

 
—

Actuarial (gains) losses
5,915

 
(8,209
)
 
(64
)
 
(78
)
Benefits paid
(8,514
)
 
(8,213
)
 
(38
)
 
(180
)
Retiree contributions
—

 
—

 
47

 
190

Benefit obligation at end of year
$
198,899

 
$
195,516

 
$
294

 
$
341

 
 
 
 
 
 
 
 

 
Pension Benefits
 
Other Postretirement Benefits
 
2016
 
2015
 
2016
 
2015
Change in plan assets
 

 
 

 
 

 
 

Fair value of plan assets at beginning of year
$
164,488

 
$
172,280

 
$
—

 
$
—

Currency translation
(1,656
)
 
(428
)
 
—

 
—

Actual return on plan assets
7,621

 
343

 
—

 
—

Employer contributions
277

 
488

 
38

 
180

Plan participants' contributions
15

 
18

 
—

 
—

Benefits paid
(8,514
)
 
(8,213
)
 
(38
)
 
(180
)
Fair value of plan assets at end of year
$
162,231

 
$
164,488

 
$
—

 
$
—

Funded status
$
(36,668
)
 
$
(31,028
)
 
$
(294
)
 
$
(341
)
 
 
 
 
 
 
 
 
Accumulated benefit obligation at end of year
$
195,257

 
$
191,849

 
n/a
 
n/a
 
 
 
 
 
 
 
 
Assumptions:
 

 
 

 
 

 
 

Discount rate - benefit obligations - qualified plans
3.80%
 
4.00%
 
3.25%
 
3.25%
Discount rate - service cost - qualified plans
3.47%
 
4.00%
 
n/a
 
3.25%
Discount rate - interest cost - qualified plans
3.23%
 
4.00%
 
2.53%
 
3.25%
Discount rate - benefit obligations - nonqualified plans
3.38%
 
3.25%
 
n/a
 
n/a
Discount rate - service cost - nonqualified plans
2.32%
 
3.25%
 
n/a
 
n/a
Discount rate - interest cost - nonqualified plans
2.67%
 
3.25%
 
n/a
 
n/a
Rate of compensation increase - qualified plans
4.00%
 
4.00%
 
n/a
 
n/a
Rate of compensation increase - nonqualified plans
4.00%
 
4.00%
 
n/a
 
n/a
Measurement date
11/30/2016
 
11/30/2015
 
11/30/2016
 
11/30/2015
Schedule of amounts recognized in balance sheet
 
Pension Benefits
 
Other Postretirement Benefits
 
2016
 
2015
 
2016
 
2015
Amounts recognized in the Consolidated Balance Sheets as of November 30
 
 
 
 
 
 
 
Accounts payable and accrued liabilities
$
(157
)
 
$
(159
)
 
$
(40
)
 
$
(47
)
Long-term pension and postretirement healthcare benefits liabilities
(36,511
)
 
(30,869
)
 
(254
)
 
(294
)
Funded status
$
(36,668
)
 
$
(31,028
)
 
$
(294
)
 
$
(341
)
 
 
 
 
 
 
 
 
Accumulated other comprehensive loss, pre-tax
$
62,974

 
$
58,137

 
$
(1,060
)
 
$
(1,214
)
 
 
 
 
 
 
 
 
Amounts recognized in Accumulated Other Comprehensive Loss, as of November 30
 

 
 

 
 

 
 

Unrecognized net actuarial loss (gain)
$
62,974

 
$
58,136

 
$
(832
)
 
$
(864
)
Unrecognized net prior service credit
—

 
1

 
(228
)
 
(350
)
Accumulated other comprehensive loss, pre-tax
62,974

 
58,137

 
(1,060
)
 
(1,214
)
Deferred taxes
(23,127
)
 
(21,380
)
 
364

 
423

Accumulated other comprehensive loss, after-tax
$
39,847

 
$
36,757

 
$
(696
)
 
$
(791
)
Schedule of defined benefit plan amounts recognized in other comprehensive income (loss)
The amounts affecting Accumulated other comprehensive loss for the years ended November 30, 2016 and 2015 are as follows:
 
Pension Benefits
 
Other Postretirement Benefits
 
2016
 
2015
 
2016
 
2015
Amortization of prior service (cost) credit, net of tax of $0, $(2) and $(42), $(43), respectively
$
(1
)
 
$
—

 
$
81

 
$
79

Amortization of actuarial (losses) gains, net of tax of $1,401, $1,351 and $(32), $(30), respectively
(2,485
)
 
(2,324
)
 
62

 
57

Current year actuarial losses (gains), net of tax of $(3,159), $(1,081) and $21, $27, respectively
5,498

 
1,827

 
(40
)
 
(51
)
Curtailment gain, net of tax of $0, $797 and $0, $0, respectively
—

 
(1,396
)
 
—

 
—

Effect of change in deferred tax rate
41

 
150

 
(8
)
 
(6
)
Total
$
3,053

 
$
(1,743
)
 
$
95

 
$
79
Schedule of allocation of plan assets
As of the November 30 measurement dates, the fair values of actual pension asset allocations were as follows:
 
2016
 
2015
Equity securities
41.7
%
 
40.3
%
Fixed income securities
57.9
%
 
59.2
%
Cash and cash equivalents
0.4
%
 
0.5
%
 
100.0
%
 
100.0
%
Schedule of fair value, assets and liabilities measured on recurring basis
 The following table summarizes the fair value of the pension plans’ assets.
 
Fair Value Measurements at Reporting Date
 
Total
 
Level 1
 
Level 2
 
Level 3
November 30, 2016
 
 
 
 
 
 
 
U.S. equity securities funds
$
37,600

 
$
37,600

 
$
—

 
$
—

Non-U.S. equity securities funds
30,055

 
30,055

 
—

 
—

Fixed income securities funds
93,949

 
93,949

 
—

 
—

Cash and equivalents funds
627

 
627

 
—

 
—

Fair value of plan assets
$
162,231

 
$
162,231

 
$
—

 
$
—


 
Fair Value Measurements at Reporting Date
 
Total
 
Level 1
 
Level 2
 
Level 3
November 30, 2015
 
 
 
 
 
 
 
U.S. equity securities funds
$
45,744

 
$
45,744

 
$
—

 
$
—

Non-U.S. equity securities funds
20,466

 
20,466

 
—

 
—

Fixed income securities funds
97,373

 
97,373

 
—

 
—

Cash and equivalents funds
625

 
625

 
—

 
—

Total
$
164,208

 
$
164,208

 
$
—

 
$
—

Other items to reconcile to fair value of plan assets
280

 
 

 
 

 
 

Fair value of plan assets
$
164,488

 
 

 
 

 
 
Schedule of net benefit costs
The components of net periodic benefit cost for pensions are shown below.  Net periodic benefit cost is based on assumptions determined at the prior year-end measurement date.  Increases in the liability due to changes in plan benefits are recognized in the net periodic benefit costs through straight-line amortization over the average remaining service period of employees expected to receive benefits.

 
Pension Benefits
 
2016
 
2015
 
2014
Components of net periodic benefit cost
 
 
 
 
 
Service cost
$
1,481

 
$
1,905

 
$
1,990

Interest cost
6,197

 
7,676

 
7,704

Expected return on plan assets
(10,326
)
 
(11,567
)
 
(11,306
)
Settlement costs
—

 
—

 
—

Curtailment
—

 
1

 
—

Amortization of unrecognized:
 
 
 

 
 

Prior service cost
1

 
(4
)
 
(10
)
Net actuarial loss
3,817

 
3,676

 
2,884

Net periodic benefit cost
$
1,170

 
$
1,687

 
$
1,262

 
 
 
 
 
 
Assumptions:
 

 
 

 
 

Discount rate - benefit obligations - qualified plans
3.97%
 
3.75%
 
4.50%
Discount rate - service cost - qualified plans
3.64%
 
3.75%
 
4.50%
Discount rate - interest cost - qualified plans
3.28%
 
3.75%
 
4.50%
Discount rate - benefit obligations - nonqualified plans
3.36%
 
3.00%
 
3.25%
Discount rate - service cost - nonqualified plans
2.49%
 
3.00%
 
3.25%
Discount rate - interest cost - nonqualified plans
2.59%
 
3.00%
 
3.25%
Expected return on plan assets
6.50%
 
7.00%
 
7.50%
Rate of compensation increase - qualified plans
4.00%
 
4.00%
 
4.00%
Rate of compensation increase - nonqualified plans
4.00%
 
4.00%
 
4.00%
Measurement date - qualified plans
11/30/2015
 
11/30/2014
 
11/30/2013
Measurement date - nonqualified plans
11/30/2015
 
11/30/2014
 
11/30/2013
The components of net periodic benefit income for postretirement healthcare benefits are shown below.
 
Other Postretirement Benefits
 
2016
 
2015
 
2014
Components of net periodic benefit income
 
 
 
 
 
Interest cost
$
8

 
$
12

 
$
10

Amortization of unrecognized:
 
 
 

 
 

Prior service cost
(123
)
 
(122
)
 
(122
)
Net actuarial gain
(94
)
 
(87
)
 
(147
)
Net periodic benefit income
$
(209
)
 
$
(197
)
 
$
(259
)
 
 
 
 
 
 
Assumptions:
 
 
 

 
 

Discount rate - benefit obligations
3.29
%
 
3.25
%
 
3.00
%
Discount rate - service cost
n/a
 
n/a
 
n/a
Discount rate - interest cost
2.41
%
 
3.25
%
 
3.00
%
Measurement date
11/30/2015
 
11/30/2014
 
11/30/2013
Schedule of amounts in accumulated other comprehensive income (loss) to be recognized over next fiscal year
The estimated amounts that will be amortized from Accumulated other comprehensive loss at November 30, 2016 into net periodic benefit cost, pre-tax, in fiscal year 2017 are as follows:
 
Pension
Benefits
 
Other
Postretirement
Benefits
Prior service credit
$
—

 
$
(123
)
Actuarial loss (gain)
4,325

 
(96
)
Total
$
4,325

 
$
(219
)
Schedule of expected benefit payments
The expected cash benefit payments from the plans for the next ten fiscal years are as follows:
 
Pension
Benefits
 
Other
Postretirement
Benefits
2017
$
8,941

 
$
39

2018
9,272

 
36

2019
9,610

 
32

2020
9,987

 
29

2021
11,128

 
26

2022-2026
59,972

 
95
Schedule of costs of retirement plans
The Company recognized expense related to these plans for the past three fiscal years as follows:
 
2016
$
7,563

2015
7,171

2014
7,945