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Quarterly Financial Data (Unaudited) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Aug. 26, 2017 | May 27, 2017 | Feb. 25, 2017 | Nov. 26, 2016 | Aug. 27, 2016 | May 28, 2016 | Feb. 27, 2016 | Nov. 28, 2015 | Aug. 26, 2017 | Aug. 27, 2016 | Aug. 29, 2015
Condensed Income Statements, Captions [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues | $ 403,589 | $ 409,834 | $ 391,427 | $ 386,108 | $ 363,766 | $ 367,799 | $ 363,097 | $ 373,384 | $ 1,590,958 | $ 1,468,046 | $ 1,456,605
Income (loss) before income taxes | (7,677) | 39,362 | 37,374 | 46,064 | 57,315 | 48,699 | 38,999 | 58,358 | 115,123 | 203,371 | 201,268
Provision (benefit) for income taxes | (2,781) | 15,000 | 14,858 | 17,850 | 21,821 | 18,555 | 15,501 | 22,468 | 44,927 | 78,345 | 76,969
Net income (loss) | $ (4,896) | $ 24,362 | $ 22,516 | $ 28,214 | 35,494 | $ 30,144 | $ 23,498 | $ 35,890 | $ 70,196 | $ 125,026 | $ 124,299
Income (loss) per share – diluted |  |  |  |  |  |  |  |  |  |  |
Common Stock (in dollars per share) |  |  |  |  |  |  |  |  | $ 3.44 | $ 6.17 | $ 6.15
Income (loss) allocated to – basic |  |  |  |  |  |  |  |  |  |  |
Common Stock |  |  |  |  |  |  |  |  | $ 70,196 | $ 125,026 | $ 124,299
Income (loss) allocated to – diluted |  |  |  |  |  |  |  |  |  |  |
Common Stock |  |  |  |  |  |  |  |  | $ 69,837 | $ 124,409 | $ 123,472
Weighted average number of shares outstanding – Basic: |  |  |  |  |  |  |  |  |  |  |
Common Stock (in shares) |  |  |  |  |  |  |  |  | 20,284 | 20,168 | 20,098
Weighted average number of shares outstanding – Diluted: |  |  |  |  |  |  |  |  |  |  |
Common Stock (in shares) |  |  |  |  |  |  |  |  | 20,276 | 20,154 | 20,079
Selling and Administrative Expenses |  |  |  |  |  |  |  |  |  |  |
Weighted average number of shares outstanding – Diluted: |  |  |  |  |  |  |  |  |  |  |
Gain related to environmental litigation settlement |  |  |  |  | $ 15,900 |  |  |  |  |  |
Benefit to diluted earnings per share (in dollars per share) |  |  |  |  | $ 0.48 |  |  |  |  |  |
Machinery and Equipment |  |  |  |  |  |  |  |  |  |  |
Income (loss) per share – diluted |  |  |  |  |  |  |  |  |  |  |
Common Stock (in dollars per share) | $ (1.68) |  |  |  |  |  |  |  |  |  |
Income (loss) allocated to – diluted |  |  |  |  |  |  |  |  |  |  |
Common Stock | $ (34,100) |  |  |  |  |  |  |  |  |  |
Weighted average number of shares outstanding – Diluted: |  |  |  |  |  |  |  |  |  |  |
Impairment charge of capitalized costs as part of ongoing CRM systems project | $ 55,800 |  |  |  |  |  |  |  |  |  |
Mr. Croatti | Restricted Stock Award Agreement |  |  |  |  |  |  |  |  |  |  |
Income (loss) per share – diluted |  |  |  |  |  |  |  |  |  |  |
Common Stock (in dollars per share) |  | $ (0.16) |  |  |  |  |  |  |  |  |
Income (loss) allocated to – diluted |  |  |  |  |  |  |  |  |  |  |
Common Stock |  | $ (3,300) |  |  |  |  |  |  |  |  |
Weighted average number of shares outstanding – Diluted: |  |  |  |  |  |  |  |  |  |  |
Pre-tax loss compensation expense as a result of accelerated vesting of certain shares |  | $ 5,400 |  |  |  |  |  |  | $ 5,400 |  |
Common Stock |  |  |  |  |  |  |  |  |  |  |
Income (loss) per share – basic |  |  |  |  |  |  |  |  |  |  |
Common Stock (in dollars per share) | $ (0.25) | $ 1.26 | $ 1.17 | $ 1.46 | 1.84 | $ 1.57 | $ 1.23 | $ 1.88 | $ 3.63 | $ 6.51 | $ 6.50
Income (loss) per share – diluted |  |  |  |  |  |  |  |  |  |  |
Common Stock (in dollars per share) | $ (0.24) | $ 1.19 | $ 1.10 | $ 1.38 | $ 1.74 | $ 1.49 | $ 1.16 | $ 1.78 |  |  |
Income (loss) allocated to – basic |  |  |  |  |  |  |  |  |  |  |
Common Stock | $ (3,908) | $ 19,307 | $ 17,836 | $ 22,342 | $ 28,097 | $ 23,939 | $ 18,691 | $ 28,539 | $ 55,903 | $ 99,282 | $ 98,665
Income (loss) allocated to – diluted |  |  |  |  |  |  |  |  |  |  |
Common Stock | $ (4,886) | $ 24,199 | $ 22,362 | $ 28,020 | $ 35,250 | $ 30,007 | $ 23,401 | $ 35,741 |  |  |
Weighted average number of shares outstanding – Basic: |  |  |  |  |  |  |  |  |  |  |
Common Stock (in shares) | 15,402 | 15,326 | 15,305 | 15,285 | 15,268 | 15,253 | 15,241 | 15,218 | 15,382 | 15,245 | 15,182
Weighted average number of shares outstanding – Diluted: |  |  |  |  |  |  |  |  |  |  |
Common Stock (in shares) | 20,220 | 20,279 | 20,263 | 20,249 | 20,223 | 20,183 | 20,138 | 20,132 |  |  |
Class B Common Stock |  |  |  |  |  |  |  |  |  |  |
Income (loss) per share – basic |  |  |  |  |  |  |  |  |  |  |
Common Stock (in dollars per share) | $ (0.20) | $ 1.01 | $ 0.93 | $ 1.17 | $ 1.47 | $ 1.26 | $ 0.98 | $ 1.50 | $ 2.91 | $ 5.21 | $ 5.20
Income (loss) allocated to – basic |  |  |  |  |  |  |  |  |  |  |
Common Stock | $ (978) | $ 4,883 | $ 4,518 | $ 5,668 | $ 7,139 | $ 6,061 | $ 4,704 | $ 7,193 | $ 13,915 | $ 25,093 | $ 24,761
Weighted average number of shares outstanding – Basic: |  |  |  |  |  |  |  |  |  |  |
Common Stock (in shares) | 4,818 | 4,846 | 4,846 | 4,847 | 4,850 | 4,827 | 4,795 | 4,795 | 4,786 | 4,816 | 4,763

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