Condensed Statements of Consolidated Income (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018
Income Statement [Abstract]
Net sales	$ 833,375	$ 840,038	$ 1,689,779	$ 1,704,553
Cost of sales	592,141	597,178	1,197,085	1,209,840
Gross profit	241,234	242,860	492,694	494,713
Selling, distribution and administrative expense, including depreciation	182,489	181,895	372,783	367,409
Operating income	58,745	60,965	119,911	127,304
Interest expense, net	9,583	9,578	19,642	20,054
Other (income) expense, net	(215)	946	(215)	707
Income before income taxes	49,377	50,441	100,484	106,543
Income tax expense	11,346	11,724	23,654	18,888
Net income	$ 38,031	$ 38,717	$ 76,830	$ 87,655
Net income per share - basic	$ 0.98	$ 1.00	$ 1.99	$ 2.26
Net income per share - diluted	$ 0.97	$ 0.99	$ 1.97	$ 2.23
Weighted average common shares outstanding for basic computation	38,649	38,743	38,630	38,729
Dilutive effect of potential common shares	398	504	370	587
Weighted average common shares outstanding for diluted computation	39,047	39,247	39,000	39,316