Consolidated Statements Of Shareholders' Equity (USD $) In Thousands, except Share data	Total	Common Shares	Accumulated Other Comprehensive Income	Retained Earnings	Treasury Shares	Non-controlling Interest
Beginning Balance at Jun. 30, 2009	$ 322,871	$ 89,700	$ 3,862	$ 257,106	$ (28,292)	$ 495
Beginning Balance, shares at Jun. 30, 2009		65,531,000			(6,458,000)
Shares issued under stock incentive plans	2,637	2,637
Shares issued under stock incentive plans, in shares		420,000
Net earnings	38,735			38,577		158
Shares issued for acquisition of business (in shares)		2,292,000
Shares issued for acquisition of business	36,851	36,851
Treasury stock in deferred compensation plan		357			(357)
Treasury stock in deferred compensation plan, shares					26,000
Foreign currency translation adjustment	126		146			(20)
Share-based compensation expense	8,790	8,790
Excess tax benefits from share-based compensation expense	976	976
Distribution of noncontrolling interests	(126)					(126)
Ending Balance at Jun. 30, 2010	410,860	139,311	4,008	295,683	(28,649)	507
Ending Balance, shares at Jun. 30, 2010		68,243,000			(6,484,000)
Shares issued under stock incentive plans	6,206	6,206
Shares issued under stock incentive plans, in shares		834,000
Net earnings	83,018			82,682		336
Treasury stock in deferred compensation plan		(356)			356
Treasury stock in deferred compensation plan, shares					90,000
Foreign currency translation adjustment	9,107		9,108			(1)
Share-based compensation expense	9,972	9,972
Excess tax benefits from share-based compensation expense	4,053	4,053
Distribution of noncontrolling interests	(115)					(115)
Ending Balance at Jun. 30, 2011	523,101	159,186	13,116	378,365	(28,293)	727
Ending Balance, shares at Jun. 30, 2011		69,077,000			(6,394,000)
Shares issued under stock incentive plans	2,738	2,738
Shares issued under stock incentive plans, in shares		550,000
Net earnings	61,275			60,306		969
Purchases of Treasury Stock	(4,988)				(4,988)
Purchases of Treasury Stock, shares	301,716				(302,000)
Treasury stock in deferred compensation plan	5,000	1,966			(1,966)
Treasury stock in deferred compensation plan, shares					98,000
Foreign currency translation adjustment	(2,878)		(2,878)
Share-based compensation expense	11,584	11,584
Excess tax benefits from share-based compensation expense	821	821
Distribution of noncontrolling interests	(267)					(267)
Ending Balance at Jun. 30, 2012	$ 591,386	$ 176,295	$ 10,238	$ 438,671	$ (35,247)	$ 1,429
Ending Balance, shares at Jun. 30, 2012		69,627,000			(6,794,000)