Selected Quarterly Financial Data (Schedule Of Quarterly Financial Information) (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended																12 Months Ended
		Jun. 30, 2015		Mar. 31, 2015		Dec. 31, 2014		Sep. 30, 2014		Jun. 30, 2014		Mar. 31, 2014		Dec. 31, 2013		Sep. 30, 2013		Jun. 30, 2015		Jun. 30, 2014		Jun. 30, 2013
Quarterly Financial Information Disclosure [Abstract]
Net Sales		$ 277,716		$ 263,400		$ 303,411		$ 259,987		$ 258,808		$ 241,849		$ 292,281		$ 248,137		$ 1,104,514		$ 1,041,075		$ 1,013,803
Gross Margin		64,990		56,625		78,653		57,424		57,866		51,908		81,623		57,171		257,692		248,568		244,707
Income From Continuing Operations		25,568		20,403		32,954		22,761		20,901		18,900		37,133		24,052		101,686		100,986		103,860
Income (Loss) From Discontinued Operations, Net of Tax										426		(29,276)		2,101		749		0		(26,000)		5,389
Net Income (Loss)		$ 25,568		$ 20,403		$ 32,954		$ 22,761		$ 21,327		$ (10,376)		$ 39,234		$ 24,801		$ 101,686		$ 74,986		$ 109,249
Diluted Income (Loss) Per Common Share:
Continuing Operations (in dollars per share)		$ 0.93	[1]	$ 0.75	[1]	$ 1.20	[1]	$ 0.83	[1]	$ 0.76	[1]	$ 0.69	[1]	$ 1.36	[1]	$ 0.88	[1]	$ 3.72	[1]	$ 3.69	[1]	$ 3.79
Discontinued Operations (in dollars per share)	[1]									0.02		(1.07)		0.08		0.03				(0.95)
Net Income (Loss) (in dollars per share)		$ 0.93	[1]	$ 0.75	[1]	$ 1.20	[1]	$ 0.83	[1]	$ 0.78	[1]	$ (0.38)	[1]	$ 1.44	[1]	$ 0.91	[1]	$ 3.72	[1]	$ 2.74	[1]	$ 3.99

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