Condensed Consolidated Statements Of Income (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2015	Mar. 31, 2014
Income Statement [Abstract]
Net Sales	$ 263,400	$ 241,849	$ 826,798	$ 782,267
Cost of Sales	206,775	189,941	634,096	591,565
Gross Margin	56,625	51,908	192,702	190,702
Selling, General and Administrative Expenses	25,417	23,073	76,674	69,251
Operating Income	31,208	28,835	116,028	121,451
Interest Income and Other-Net	(138)	(204)	(177)	(328)
Income From Continuing Operations Before Income Taxes	31,070	28,631	115,851	121,123
Taxes Based on Income	10,667	9,731	39,733	41,038
Income From Continuing Operations	20,403	18,900	76,118	80,085
Discontinued Operations, Net of Tax:
Income from discontinued operations	0	325	0	3,175
Loss on sale of discontinued operations	0	(29,601)	0	(29,601)
Total discontinued operations	0	(29,276)	0	(26,426)
Net Income (Loss)	$ 20,403	$ (10,376)	$ 76,118	$ 53,659
Income Per Common Share From Continuing Operations:
Basic and diluted (in dollars per share)	$ 0.75	$ 0.69	$ 2.78	$ 2.93
Loss Per Common Share From Discontinued Operations:
Basic and diluted (in dollars per share)	$ 0.00	$ (1.07)	$ 0.00	$ (0.97)
Net Income (Loss) Per Common Share:
Basic (in dollars per share)	$ 0.75	$ (0.38)	$ 2.78	$ 1.97
Diluted (in dollars per share)	$ 0.75	$ (0.38)	$ 2.78	$ 1.96
Cash Dividends Per Common Share (in dollars per share)	$ 0.46	$ 0.44	$ 1.36	$ 1.28
Weighted Average Common Shares Outstanding:
Basic (in shares)	27,303	27,261	27,294	27,258
Diluted (in shares)	27,330	27,297	27,323	27,303