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Unaudited Quarterly Results Of Operations (Tables) | 12 Months Ended
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Sep. 30, 2018
Selected Quarterly Financial Information [Abstract] |
Quarterly Results Of Operations |
|  | 16 Weeks Ended |  | 12 Weeks Ended
Fiscal Year 2018 |  | January 21, 2018 |  | April 15, 2018 |  | July 8, 2018 |  | September 30, 2018
Revenues |  | $ | 294,463 |  |  | $ | 209,772 |  |  | $ | 187,983 |  |  | $ | 177,472 |
Earnings from operations |  | $ | 72,807 |  |  | $ | 46,820 |  |  | $ | 76,340 |  |  | $ | 35,647 |
Net earnings |  | $ | 12,190 |  |  | $ | 47,605 |  |  | $ | 45,307 |  |  | $ | 16,269 |
Net earnings per share: |  |  |  |  |  |  |  |
Basic |  | $ | 0.41 |  |  | $ | 1.64 |  |  | $ | 1.62 |  |  | $ | 0.61 |
Diluted |  | $ | 0.41 |  |  | $ | 1.62 |  |  | $ | 1.60 |  |  | $ | 0.60 |
|  | 16 Weeks Ended |  | 12 Weeks Ended
Fiscal Year 2017 |  | January 22, 2017 |  | April 16, 2017 |  | July 9, 2017 |  | October 1, 2017
Revenues |  | $ | 353,181 |  |  | $ | 265,884 |  |  | $ | 246,101 |  |  | $ | 232,125 |
Earnings from operations |  | $ | 66,789 |  |  | $ | 59,760 |  |  | $ | 55,438 |  |  | $ | 60,066 |
Net earnings |  | $ | 35,929 |  |  | $ | 33,094 |  |  | $ | 36,351 |  |  | $ | 29,958 |
Net earnings per share: |  |  |  |  |  |  |  |
Basic |  | $ | 1.12 |  |  | $ | 1.07 |  |  | $ | 1.23 |  |  | $ | 1.02 |
Diluted |  | $ | 1.11 |  |  | $ | 1.06 |  |  | $ | 1.22 |  |  | $ | 1.01 |

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- Definition Tabular disclosure of quarterly financial data. Includes, but is not limited to, financial information for fiscal quarters, cumulative effect of a change in accounting principle and earnings per share data. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=109225645&loc=d3e1280-108306 + Details
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