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v3.20.2

Summary of Significant Accounting Policies - Narrative (Details) |  |  | 3 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Aug. 19, 2020 USD ($) $ / shares | Sep. 01, 2019 USD ($) | Aug. 29, 2020 USD ($) | Aug. 29, 2020 USD ($) segment $ / shares | Aug. 31, 2019 USD ($) $ / shares | Aug. 25, 2018 USD ($) $ / shares
Accounting Policies [Abstract] |  |  |  |  |  |
Number of reportable segments | segment |  |  |  | 2 |  |
Goodwill impairment |  |  | $ 0 |  |  |
Finite-lived impairment loss |  |  |  | $ 0 |  |
Insurance policy limit |  |  |  | 50,000,000.0 |  |
Self insurance reserve for product liability, per occurrence |  |  |  | 1,000,000.0 |  |
Self insurance reserve for product liability, aggregate per policy year |  |  |  | 2,000,000.0 |  |
Self-insurance policy health, occurrence |  |  |  | $ 300,000 |  |
Self-insurance policy health, aggregate |  |  |  | 125.00% |  |
Advertising expense |  |  |  | $ 12,500,000 | $ 8,300,000 | $ 7,400,000
Common stock dividends (in dollars per share) | $ / shares | $ 0.12 |  |  | $ 0.45 | $ 0.43 | $ 0.40
Cash dividends paid on common stock | $ 4,000,000.0 |  |  | $ 14,718,000 | $ 13,728,000 | $ 12,738,000
Deferred FICA liability |  |  | 7,800,000 | 7,800,000 |  |
Employee retention credit |  |  | 4,000,000.0 | 4,000,000.0 |  |
Accounting Standards Update [Extensible List] |  | us-gaap:AccountingStandardsUpdate201602Member |  |  |  |
Net lease assets |  | $ 33,800,000 | 33,861,000 | 33,861,000 |  |
Net lease liabilities |  | $ 33,400,000 | $ 35,115,000 | $ 35,115,000 |  |

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