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Shareholders' Equity (Details) $ / shares in Units, $ in Thousands |  | 12 Months Ended |
--- | --- | --- | ---
Oct. 14, 2021 USD ($) $ / shares | Aug. 28, 2021 USD ($) item shares | Aug. 29, 2020 USD ($) shares | Jun. 29, 2021 shares
Components Of Shareholders Equity [Line Items] |  |  |  |
Preferred stock, shares authorized |  | 5,000,000 | 5,000,000 |
Preferred stock, shares issued |  | 0 | 0 |
Preferred stock, shares outstanding |  | 0 | 0 |
Subsequent Event [Member] |  |  |  |
Components Of Shareholders Equity [Line Items] |  |  |  |
Dividends declared date | Oct. 14, 2021 |  |  |
Dividends payable per share | $ / shares | $ 0.75 |  |  |
Dividend payable date | Nov. 30, 2021 |  |  |
Dividends record date | Nov. 16, 2021 |  |  |
Dividend payable amount | $ | $ 41,606 |  |  |
Class A Common Stock [Member] |  |  |  |
Components Of Shareholders Equity [Line Items] |  |  |  |
Common stock, votes per share |  | one |  |
Class A Common Stock [Member] | Share Repurchase Program [Member] |  |  |  |
Components Of Shareholders Equity [Line Items] |  |  |  |
Number of shares authorized for repurchase |  | 5,000,000 |  | 5,000,000
Class B Common Stock [Member] |  |  |  |
Components Of Shareholders Equity [Line Items] |  |  |  |
Common stock, votes per share |  | ten |  |
Common stock voting rights for each share held | item |  | 10 |  |
Treasury Stock [Member] |  |  |  |
Components Of Shareholders Equity [Line Items] |  |  |  |
Treasury stock repurchased, and treasury stock repurchased and retired, shares |  | 789,000 | 48,000 |
Treasury stock repurchased, and treasury stock repurchased and retired, amount | $ |  | $ 71,261 | $ 3,444 |
Retirement of treasury stock, Shares |  | 736,000 |  |
Treasury stock reissued to fund plan, shares |  | 57,000 | 69,000 |
Treasury Stock [Member] | Class A Common Stock [Member] |  |  |  |
Components Of Shareholders Equity [Line Items] |  |  |  |
Shares repurchased by the company for associates' tax withholding liability associated with share-based compensation |  | 53,000 | 48,000 |

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