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Derivatives, Investments and Fair Value Measurements (Fair Value Inputs) (Details) - Fair Value, Measurements, Recurring [Member] - USD ($) $ in Thousands | Aug. 26, 2017 | Aug. 27, 2016
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Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Cash Equivalents, at Carrying Value |  | $ 77,234
Domestic equity funds | $ 1,708 | 3,587
International equity funds | 174 | 258
Fixed income funds | 259 | 265
Interest rate swap contract | (828) |
Total assets (liabilities) at fair value | 1,313 | 81,344
Fair Value, Inputs, Level 1 [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Cash Equivalents, at Carrying Value |  | 77,234
Domestic equity funds | 1,671 | 3,515
International equity funds | 157 | 225
Fixed income funds | 170 | 206
Interest rate swap contract | 0 |
Total assets (liabilities) at fair value | 1,998 | 81,180
Fair Value, Inputs, Level 2 [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Cash Equivalents, at Carrying Value |  | 0
Domestic equity funds | 37 | 72
International equity funds | 17 | 33
Fixed income funds | 89 | 59
Interest rate swap contract | (828) |
Total assets (liabilities) at fair value | (685) | 164
Fair Value, Inputs, Level 3 [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Cash Equivalents, at Carrying Value |  | 0
Domestic equity funds | 0 | 0
International equity funds | 0 | 0
Fixed income funds | 0 | 0
Interest rate swap contract | 0 |
Total assets (liabilities) at fair value | $ 0 | $ 0

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- Definition Amount of short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.1) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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