Consolidated Statements Of Income - USD ($) shares in Thousands, $ in Thousands		12 Months Ended
		Jun. 30, 2017		Jun. 30, 2016		Jun. 30, 2015
Income Statement [Abstract]
Net Sales		$ 1,201,842		$ 1,191,109		$ 1,104,514
Cost of Sales		883,078		891,480		846,822
Gross Profit		318,764		299,629		257,692
Selling, General and Administrative Expenses		126,381		115,059		102,831
Multiemployer Pension Settlement and Related Costs		17,635		0		0
Operating Income	[1]	174,748		184,570		154,861
Other, Net		768		63		(309)
Income Before Income Taxes		175,516		184,633		154,552
Taxes Based on Income		60,202		62,869		52,866
Net Income		$ 115,314	[2]	$ 121,764		$ 101,686
Net Income Per Common Share:
Basic (in dollars per share)		$ 4.21		$ 4.45		$ 3.72
Diluted (in dollars per share)		$ 4.20	[2],[3]	$ 4.44	[3]	$ 3.72
Weighted Average Common Shares Outstanding:
Basic (in shares)		27,376		27,336		27,300
Diluted (in shares)		27,440		27,373		27,327

[1] All intercompany transactions have been eliminated.

[2] Included in the third quarter and fiscal year net income is expense of $11.5 million, net of taxes, or approximately $0.42 per diluted share, related to a multiemployer pension settlement and other benefit-related costs.

[3] 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.