CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Income Statement [Abstract]
Net sales	$ 594,462	$ 622,231
Cost of sales	322,506	338,397
Gross profit	271,956	283,834
Selling, general and administrative expenses	132,015	136,052
Operating income	139,941	147,782
Other (income) expense - net	1,565	(140)
Interest expense	10,877	10,921
Income before income taxes	127,499	137,001
Provision for income taxes	25,501	26,733
Net income	$ 101,998	$ 110,268
Basic earnings per common share (in dollars per share)	$ 1.35	$ 1.46
Diluted earnings per common share (in dollars per share)	$ 1.33	$ 1.44
Share data:
Basic weighted average common shares outstanding (in shares)	75,740	75,442
Diluted weighted average common shares outstanding (in shares)	76,452	76,284