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Employee and Retiree Benefits (Tables) | 12 Months Ended
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Aug. 31, 2019
Retirement Benefits [Abstract] |
Schedule of Amounts Recognized in Balance Sheet [Table Text Block] | Deferred compensation benefits are as follows:
(in thousands) | August 31, 2019 |  | August 25, 2018
Non-qualified deferred compensation | $ | 13,093 |  |  | $ | 14,831 |
Supplemental executive retirement plan | 2,072 |  |  | 2,309 |
Executive share option plan | 12 |  |  | 935 |
Executive deferred compensation plan | 621 |  |  | 421 |
Officer stock-based compensation | — |  |  | 1,528 |
Total deferred compensation benefits | 15,798 |  |  | 20,024 |
Less current portion(1) | 2,920 |  |  | 4,742 |
Deferred compensation benefits, net of current portion | $ | 12,878 |  |  | $ | 15,282 |
(1) | Included in accrued compensation in the consolidated balance sheets.
Schedule of Net Benefit Costs [Table Text Block] | Net periodic postretirement benefit income consisted of the following components:
(in thousands) | 2017
Interest cost | $ | 29 |
Service cost | 16 |
Amortization of prior service benefit | (40,444 | )
Amortization of net actuarial loss | 15,648 |
Net periodic postretirement benefit income | $ | (24,751 | )
Investment in Life Insurance [Table Text Block] | The cash surrender value of these policies is presented in investment in life insurance in the accompanying balance sheets and consists of the following:
(in thousands) | August 31, 2019 |  | August 25, 2018
Cash value | $ | 61,836 |  |  | $ | 63,574 |
Borrowings | (34,990 | ) |  | (35,277 | )
Investment in life insurance | $ | 26,846 |  |  | $ | 28,297 |

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- Definition Tabular disclosure of the amounts that are recognized in the balance sheet (or statement of financial position) for pension plans and/or other employee benefit plans, showing separately the assets and current and noncurrent liabilities (if applicable) recognized. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920 + Details
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- Definition Tabular disclosure of the components of net benefit costs for pension plans and/or other employee benefit plans including service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) recognized due to settlements or curtailments. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920 + Details
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