Consolidated Statements Of Income (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Jun. 30, 2013		Jun. 30, 2012		Jun. 30, 2011
Consolidated Statements Of Income [Abstract]
Net Sales	$ 1,165,909		$ 1,131,359		$ 1,089,946
Cost of Sales	898,800		891,248		847,517
Gross Margin	267,109		240,111		242,429
Selling, General and Administrative Expenses	105,203		96,824		95,425
Operating Income	161,906	[1]	143,287	[1]	147,004	[1]
Other Income:
Other income - Continued Dumping and Subsidy Offset Act	293		2,701		14,388
Interest income and other-net	(216)		43		114
Income Before Income Taxes	161,983		146,031		161,506
Taxes Based on Income	52,734		50,223		55,142
Net Income	$ 109,249		$ 95,808		$ 106,364
Net Income Per Common Share:
Basic	$ 4.00		$ 3.51		$ 3.84
Diluted	$ 3.99	[2]	$ 3.51	[2]	$ 3.84
Weighted Average Common Shares Outstanding:
Basic	27,252		27,233		27,664
Diluted	27,285		27,265		27,689

[1] Operating income represents net sales less operating expenses related to the business segments. All intercompany transactions have been eliminated, and intersegment revenues are not significant.

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