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Quarterly Results of Operations (Unaudited) (Tables) | 12 Months Ended
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Dec. 31, 2017
Quarterly Financial Information Disclosure [Abstract] |
Schedule of Quarterly Financial Information | The following is a tabulation of the unaudited quarterly results of operations for the two years ended December 31, 2017:
|  | Three Months Ended |
|  | 4/1/17 |  |  | 7/1/17 |  |  | 9/30/17 |  |  | 12/31/17 |
Net Sales |  | $ | 167,355 |  |  | $ | 131,854 |  |  | $ | 104,817 |  |  | $ | 118,230 |
Gross profit |  |  | 55,753 |  |  |  | 34,946 |  |  |  | 30,214 |  |  |  | 33,094 |
Net income |  |  | 22,224 |  |  |  | 10,199 |  |  |  | 9,370 |  |  |  | 10,350 |
Basic earnings per share |  |  | 1.22 |  |  |  | 0.58 |  |  |  | 0.53 |  |  |  | 0.59 |
Diluted earnings per share |  | $ | 1.21 |  |  | $ | 0.57 |  |  | $ | 0.52 |  |  | $ | 0.59 |
|  | Three Months Ended |
|  | 4/2/16 |  |  | 7/2/16 |  |  | 10/1/16 |  |  | 12/31/16 |
Net Sales |  | $ | 173,109 |  |  | $ | 167,944 |  |  | $ | 161,427 |  |  | $ | 161,848 |
Gross profit |  |  | 59,113 |  |  |  | 56,694 |  |  |  | 50,251 |  |  |  | 53,496 |
Net income |  |  | 23,278 |  |  |  | 23,515 |  |  |  | 19,850 |  |  |  | 20,829 |
Basic earnings per share |  |  | 1.23 |  |  |  | 1.24 |  |  |  | 1.05 |  |  |  | 1.11 |
Diluted earnings per share |  | $ | 1.21 |  |  | $ | 1.22 |  |  | $ | 1.03 |  |  | $ | 1.10 |

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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=84173487&loc=d3e1280-108306 + Details
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