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Income Taxes (Narrative) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Aug. 29, 2020 | Aug. 31, 2019 | Sep. 01, 2018 | Dec. 31, 2017
Unrecognized tax benefits related to tax positions | $ 1,311 |  |  |
Provision for income taxes, interest and penalties | 23 | $ 27 | $ 44 |
Accrued interest and penalties on income taxes | $ 585 | 521 |  |
Tax credit carryforward |  | 2,159 |  |
Tax credit carryforward, valuation allowance |  | $ 1,403 |  |
U.S. Federal statutory rate | 21.00% | 21.00% | 25.60% | 35.00%
Net tax benefit, revaluation of deferred tax liabilities |  |  | $ 40,464 |
Scenario, Plan [Member] |  |  |  |
U.S. Federal statutory rate | 21.00% |  |  |

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- Definition Percentage of domestic federal statutory tax rate applicable to pretax income (loss). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -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=116825942&loc=d3e330036-122817 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -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 3: http://fasb.org/us-gaap/role/ref/legacyRef -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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