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Quarterly Results Of Operations (Unaudited)
12 Months Ended
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 QuarterSecond QuarterThird QuarterFourth QuarterYear
Year ended December 31, 2018 
Net sales$650,492 $684,455 $604,244 $536,616 $2,475,807 
Gross profit140,733 150,456 125,901 103,254 520,344 
Income before income taxes58,719 62,428 43,633 27,572 192,352 
Net income47,336 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 profit124,014 131,087 121,220 116,793 493,114 
Income before income taxes58,692 62,626 47,616 43,910 212,844 
Net income43,145 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.