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Quarterly Results Of Operations (Unaudited) | 12 Months Ended
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Dec. 31, 2018
Quarterly Financial Information Disclosure [Abstract] |
Quarterly Results of Operations (Unaudited) | QUARTERLY RESULTS OF OPERATIONS (UNAUDITED) Interim unaudited financial information follows:
(In thousands, except per share amounts) | First Quarter |  | Second Quarter |  | Third Quarter |  | Fourth Quarter |  | Year
Year ended December 31, 2018 |  |  |  |  |  |  |  |  |
Net sales | $ | 650,492 |  | $ | 684,455 |  | $ | 604,244 |  | $ | 536,616 |  | $ | 2,475,807
Gross profit | 140,733 |  | 150,456 |  | 125,901 |  | 103,254 |  | 520,344
Income before income taxes | 58,719 |  | 62,428 |  | 43,633 |  | 27,572 |  | 192,352
Net income | 47,336 |  | 47,224 |  | 33,812 |  | 20,179 |  | 148,551
Net income per common share: |  |  |  |  |  |  |  |  |
Basic | $ | 1.88 |  | $ | 1.87 |  | $ | 1.34 |  | $ | 0.80 |  | $ | 5.90
Diluted | $ | 1.86 |  | $ | 1.86 |  | $ | 1.33 |  | $ | 0.80 |  | $ | 5.83
Stock market price: |  |  |  |  |  |  |  |  |
High | $ | 132.30 |  | $ | 104.90 |  | $ | 102.23 |  | $ | 80.89 |  | $ | 132.30
Low | $ | 99.46 |  | $ | 80.95 |  | $ | 98.40 |  | $ | 59.68 |  | $ | 59.68
Close (at end of quarter) | $ | 104.15 |  | $ | 90.15 |  | $ | 69.35 |  | $ | 66.80 |  | $ | 66.80
Year ended December 31, 2017 |  |  |  |  |  |  |  |  |
Net sales | $ | 498,336 |  | $ | 547,483 |  | $ | 554,814 |  | $ | 547,137 |  | $ | 2,147,770
Gross profit | 124,014 |  | 131,087 |  | 121,220 |  | 116,793 |  | 493,114
Income before income taxes | 58,692 |  | 62,626 |  | 47,616 |  | 43,910 |  | 212,844
Net income | 43,145 |  | 40,137 |  | 32,138 |  | 17,464 |  | 132,884
Net income per common share: |  |  |  |  |  |  |  |  |
Basic | $ | 1.73 |  | $ | 1.61 |  | $ | 1.28 |  | $ | 0.70 |  | $ | 5.31
Diluted | $ | 1.71 |  | $ | 1.59 |  | $ | 1.26 |  | $ | 0.68 |  | $ | 5.24
Stock market price: |  |  |  |  |  |  |  |  |
High | $ | 117.15 |  | $ | 106.23 |  | $ | 116.63 |  | $ | 132.73 |  | $ | 132.73
Low | $ | 94.98 |  | $ | 86.25 |  | $ | 93.08 |  | $ | 104.15 |  | $ | 86.25
Close (at end of quarter) | $ | 99.80 |  | $ | 102.40 |  | $ | 115.85 |  | $ | 130.00 |  | $ | 130.00
The sum of per share amounts for the four quarters may not equal the total per share amounts for the year as a result of changes in the weighted average common shares outstanding or rounding.

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- Definition The entire disclosure for quarterly financial data. Includes, but is not limited to, tabular presentation of financial information for fiscal quarters, effect of year-end adjustments, and an explanation of matters or transactions that affect comparability of the information. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -URI http://asc.fasb.org/topic&trid=2126967 + Details
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