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QUARTERLY FINANCIAL SUMMARY (UNAUDITED) (Tables) | 12 Months Ended
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Sep. 29, 2017
Quarterly Financial Data [Abstract] |
Schedule Of Quarterly Operating Results | The following summarizes quarterly operating results for the years presented below:
| First Quarter |  | Second Quarter |  | Third Quarter |  | Fourth Quarter
(thousands, except per share data) | 2017 |  | 2016 |  | 2017 |  | 2016 |  | 2017 |  | 2016 |  | 2017 |  | 2016
Net sales | $ | 93,729 |  |  | $ | 85,298 |  |  | $ | 149,807 |  |  | $ | 134,192 |  |  | $ | 155,274 |  |  | $ | 139,300 |  |  | $ | 91,755 |  |  | $ | 74,937 |
Gross profit | 36,565 |  |  | 33,299 |  |  | 64,913 |  |  | 54,995 |  |  | 70,630 |  |  | 59,283 |  |  | 38,832 |  |  | 28,885 |
Operating profit (loss) | 472 |  |  | (900 | ) |  | 20,458 |  |  | 15,138 |  |  | 24,737 |  |  | 13,583 |  |  | (76 | ) |  | (4,927 | )
Income (loss) before income taxes | (45 | ) |  | (519 | ) |  | 21,837 |  |  | 14,669 |  |  | 25,560 |  |  | 13,865 |  |  | 858 |  |  | (4,360 | )
Income tax expense (benefit) | (4,101 | ) |  | 15 |  |  | 7,878 |  |  | 5,348 |  |  | 9,007 |  |  | 7,024 |  |  | 269 |  |  | (2,233 | )
Net income (loss) | $ | 4,056 |  |  | $ | (534 | ) |  | $ | 13,959 |  |  | $ | 9,321 |  |  | $ | 16,553 |  |  | $ | 6,841 |  |  | $ | 589 |  |  | $ | (2,127 | )
Net income (loss) per common share - Basic: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class A | $ | 0.41 |  |  | $ | (0.05 | ) |  | $ | 1.41 |  |  | $ | 0.94 |  |  | $ | 1.68 |  |  | $ | 0.69 |  |  | $ | 0.06 |  |  | $ | (0.21 | )
Class B | $ | 0.37 |  |  | $ | (0.05 | ) |  | $ | 1.28 |  |  | $ | 0.86 |  |  | $ | 1.52 |  |  | $ | 0.63 |  |  | $ | 0.05 |  |  | $ | (0.21 | )
Net income (loss) per common share - Diluted: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class A | $ | 0.40 |  |  | $ | (0.05 | ) |  | $ | 1.39 |  |  | $ | 0.93 |  |  | $ | 1.65 |  |  | $ | 0.68 |  |  | $ | 0.06 |  |  | $ | (0.21 | )
Class B | $ | 0.40 |  |  | $ | (0.05 | ) |  | $ | 1.39 |  |  | $ | 0.93 |  |  | $ | 1.65 |  |  | $ | 0.68 |  |  | $ | 0.06 |  |  | $ | (0.21 | )

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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/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a)-(j) -URI http://asc.fasb.org/extlink&oid=68076893&loc=d3e1280-108306 + Details
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