Condensed Statements of Consolidated Income (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2011	Dec. 31, 2010
Income Statement [Abstract]
Net Sales	$ 570,397	$ 529,517	$ 1,149,971	$ 1,057,018
Cost of Sales	414,928	385,236	835,798	769,617
Gross Profit	155,469	144,281	314,173	287,401
Selling, Distribution and Administrative, including depreciation	122,134	111,225	237,571	219,454
Operating Income	33,335	33,056	76,602	67,947
Interest expense, net	10	458	57	1,582
Other expense (Income), net	778	(421)	2,710	(764)
Income Before Income Taxes	32,547	33,019	73,835	67,129
Income Tax Expense	11,612	11,826	26,518	25,181
Net Income	$ 20,935	$ 21,193	$ 47,317	$ 41,948
Net Income Per Share - Basic	$ 0.50	$ 0.50	$ 1.12	$ 0.99
Net Income Per Share - Diluted	$ 0.49	$ 0.49	$ 1.11	$ 0.97
Cash dividends per common share	$ 0.19	$ 0.17	$ 0.38	$ 0.34
Weighted average common shares outstanding for basic computation	41,965	42,411	42,181	42,391
Dilutive effect of potential common shares	669	887	620	826
Weighted average common shares outstanding for diluted computation	42,634	43,298	42,801	43,217