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Quarterly Financial Results (Tables) | 12 Months Ended
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Dec. 28, 2019
Quarterly Financial Results [Abstract] |
Summary Of Quarterly Financial Information |
2019 |  | First |  | Second |  | Third |  | Fourth
Net sales |  | $ | 272,990 |  | $ | 256,016 |  | $ | 260,598 |  | $ | 271,298
Gross profit |  | $ | 227,089 |  | $ | 209,522 |  | $ | 212,779 |  | $ | 224,009
Net earnings |  | $ | 24,172 |  | $ | 21,378 |  | $ | 24,222 |  | $ | 30,754
Earnings per share: |  |  |  |  |  |  |  |  |  |  |  |
Basic |  | $ | 1.03 |  | $ | 0.92 |  | $ | 1.09 |  | $ | 1.42
Diluted |  | $ | 1.01 |  | $ | 0.91 |  | $ | 1.09 |  | $ | 1.41
2018 |  | First |  | Second |  | Third |  | Fourth
Net sales |  | $ | 291,998 |  | $ | 301,460 |  | $ | 296,767 |  | $ | 299,023
Gross profit |  | $ | 242,623 |  | $ | 251,469 |  | $ | 244,890 |  | $ | 249,556
Net earnings |  | $ | 28,946 |  | $ | 33,907 |  | $ | 31,040 |  | $ | 32,331
Earnings per share: |  |  |  |  |  |  |  |  |  |  |  |
Basic |  | $ | 1.20 |  | $ | 1.40 |  | $ | 1.28 |  | $ | 1.35
Diluted |  | $ | 1.19 |  | $ | 1.36 |  | $ | 1.24 |  | $ | 1.32

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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=118952077&loc=d3e1280-108306 + Details
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