Condensed Statements of Consolidated Income (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2014	Dec. 31, 2013
Income Statement [Abstract]
Net Sales	$ 691,702	$ 581,949	$ 1,394,027	$ 1,187,254
Cost of Sales	495,989	418,566	1,003,382	854,076
Gross Profit	195,713	163,383	390,645	333,178
Selling, Distribution and Administrative, including depreciation	148,906	123,546	297,673	253,802
Operating Income	46,807	39,837	92,972	79,376
Interest (Income) Expense, net	1,955	(152)	3,617	(91)
Other (Income) Expense, net	380	(270)	624	(1,361)
Income Before Income Taxes	44,472	40,259	88,731	80,828
Income Tax Expense	14,765	14,350	29,902	28,075
Net Income	$ 29,707	$ 25,909	$ 58,829	$ 52,753
Net Income Per Share - Basic	$ 0.72	$ 0.62	$ 1.42	$ 1.25
Net Income Per Share - Diluted	$ 0.72	$ 0.61	$ 1.41	$ 1.24
Cash dividends per common share	$ 0.25	$ 0.23	$ 0.50	$ 0.46
Weighted average common shares outstanding for basic computation	41,228	42,076	41,348	42,116
Dilutive effect of potential common shares	305	386	330	431
Weighted average common shares outstanding for diluted computation	41,533	42,462	41,678	42,547