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Income Taxes - Narrative (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
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Feb. 24, 2018 | Aug. 25, 2018 | Aug. 26, 2017 | Aug. 27, 2016
Income Tax Disclosure [Abstract] |  |  |  |
Estimated income taxes net benefit |  | $ 22,600 |  |
Estimated tax transition charge |  | 2,500 |  |
Tax benefit |  | 3,100 |  |
Provisional net benefit | $ 20,100 | $ 20,100 |  |
Blended federal statutory income tax rate |  | 25.90% | 35.00% | 35.00%
Unrecognized tax benefits |  | $ 2,198 | $ 4,214 | $ 3,743
Total unrecognized tax benefits |  | 1,900 | 3,600 |
Accrued interest and penalties |  | $ 100 | $ 100 |

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- Definition Percentage of domestic federal statutory tax rate applicable to pretax income (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 6.I) -URI http://asc.fasb.org/extlink&oid=34349781&loc=d3e330036-122817 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32698-109319 + Details
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- Definition Amount accrued for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32718-109319 + Details
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