Consolidated Statements Of Income - USD ($) shares in Thousands, $ in Thousands		12 Months Ended
		Jun. 30, 2016		Jun. 30, 2015		Jun. 30, 2014
Income Statement [Abstract]
Net Sales		$ 1,191,109		$ 1,104,514		$ 1,041,075
Cost of Sales		891,480		846,822		792,507
Gross Profit		299,629		257,692		248,568
Selling, General and Administrative Expenses		115,059		102,831		94,801
Operating Income	[1]	184,570		154,861		153,767
Other, Net		63		(309)		(488)
Income From Continuing Operations Before Income Taxes		184,633		154,552		153,279
Taxes Based on Income		62,869		52,866		52,293
Income From Continuing Operations		121,764		101,686		100,986
Discontinued Operations, Net of Tax:
Income from discontinued operations		0		0		3,058
Loss on sale of discontinued operations		0		0		(29,058)
Total discontinued operations		0		0		(26,000)
Net Income		$ 121,764		$ 101,686		$ 74,986
Income Per Common Share From Continuing Operations:
Basic (in dollars per share)		$ 4.45		$ 3.72		$ 3.70
Diluted (in dollars per share)		4.44		3.72		3.69
Loss Per Common Share From Discontinued Operations:
Basic and diluted (in dollars per share)		0.00		0.00		(0.95)
Net Income Per Common Share:
Basic (in dollars per share)		4.45		3.72		2.75
Diluted (in dollars per share)		$ 4.44	[2]	$ 3.72	[2]	$ 2.74
Weighted Average Common Shares Outstanding:
Basic (in shares)		27,336		27,300		27,264
Diluted (in shares)		27,373		27,327		27,308

[1] All intercompany transactions have been eliminated.

[2] Diluted net income per common share amounts are calculated independently for each of the quarters presented. Accordingly, the sum of the quarterly net income per common share amounts may not agree with the fiscal year.