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Employee and Retiree Benefits (Tables)
12 Months Ended
Aug. 27, 2016
Compensation and Retirement Disclosure [Abstract]  
Schedule of Amounts Recognized in Balance Sheet [Table Text Block]
Postretirement health care and deferred compensation benefits are as follows:
(In thousands)
August 27, 2016
 
August 29, 2015
Postretirement health care benefit cost
$
6,346

 
$
34,535

Non-qualified deferred compensation
18,003

 
19,508

Executive share option plan liability
3,341

 
4,788

SERP benefit liability
2,681

 
2,649

Executive deferred compensation
389

 
299

Officer stock-based compensation
763

 
242

Total postretirement health care and deferred compensation benefits
31,523

 
62,021

Less current portion(1)
(4,574
)
 
(4,931
)
Long-term postretirement health care and deferred compensation benefits(2)
$
26,949

 
$
57,090


(1) 
Included in current liabilities in the Consolidated Balance Sheets
(2) 
Included in long-term liabilities in the Consolidated Balance Sheets
Schedule of Postretirement Plan Amendments [Table Text Block]
As a result of these amendments, our liability for postretirement health care was reduced as presented in the following table.
Date
 
Plan Amendment
 
Dollar Cap Reduction
 
Liability Reduction (in thousands)
 
Amortization Period (1)
Fiscal 2005
 
Established employer dollar cap
 
 
 
$
40,414

 
11.5
years
January 2012
 
Reduced employer dollar cap
 
10
%
 
4,598

 
7.8
years
January 2013
 
Reduced employer dollar cap
 
10
%
 
4,289

 
7.5
years
January 2014
 
Reduced employer dollar cap
 
10
%
 
3,580

 
7.3
years
January 2015
 
Reduced employer dollar cap
 
10
%
 
3,960

 
7.1
years
January 2016
 
Reduced employer dollar cap for retirees under age 65; discontinued retiree benefits for retirees age 65 and over
 
10
%
 
28,596

 
6.9
years
(1)  Plan amendments are amortized on a straight-line basis over the expected remaining service period of active plan participants.
Schedule of Defined Benefit Plans Disclosures [Table Text Block]
Changes in our postretirement health care liability are as follows:
(In thousands)
August 27, 2016
 
August 29, 2015
Balance at beginning of year
$
34,535

 
$
36,930

Interest cost
327

 
1,382

Service cost
108

 
427

Net benefits paid
(878
)
 
(928
)
Actuarial loss
850

 
684

Plan amendment
(28,596
)
 
(3,960
)
Balance at end of year
$
6,346

 
$
34,535

Schedule of Net Benefit Costs [Table Text Block]
Net periodic postretirement benefit income for the past three fiscal years consisted of the following components:
 
Year Ended
(In thousands)
August 27, 2016
 
August 29, 2015
 
August 30, 2014
Interest cost
$
327

 
$
1,382

 
$
1,540

Service cost
108

 
427

 
393

Amortization of prior service benefit
(7,736
)
 
(5,538
)
 
(5,650
)
Amortization of net actuarial loss
1,612

 
1,465

 
1,077

Net periodic postretirement benefit income
$
(5,689
)
 
$
(2,264
)
 
$
(2,640
)
Schedule of Net Periodic Benefit Cost Not yet Recognized [Table Text Block]
Amounts not yet recognized in net periodic benefit cost and included in accumulated other comprehensive income (before taxes) are as follows:
(In thousands)
August 27, 2016
 
August 29, 2015
Prior service credit
$
(34,139
)
 
$
(13,279
)
Net actuarial loss
15,648

 
16,410

Accumulated other comprehensive income
$
(18,491
)
 
$
3,131

Schedule of Expected Benefit Payments [Table Text Block]
xpected future benefit payments for postretirement health care for the next ten years are as follows:
(In thousands)
 
Amount
Year:
2017
 
$
416

 
2018
 
283

 
2019
 
381

 
2020
 
455

 
2021
 
489

 
2022 - 2026
 
2,484

 
Total
 
$
4,508

Investment in Life Insurance [Table Text Block]
To assist in funding the deferred compensation and SERP liabilities, we have invested in COLI policies. The cash surrender value of these policies is presented as investment in life insurance in the accompanying balance sheets and consists of the following:
(In thousands)
August 27, 2016
 
August 29, 2015
Cash value
$
60,263

 
$
58,501

Borrowings
(33,771
)
 
(32,329
)
Investment in life insurance
$
26,492

 
$
26,172