Condensed Consolidated Statements Of Shareholders' Equity (USD $) In Thousands	Common Stock [Member]	Capital In Excess Of Par [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income [Member]	Non-controlling Interest [Member]	Total
Balance, value at Jun. 30, 2010	$ 2,001	$ 117,462	$ 689,750	$ (25,833)	$ 6,232	$ 789,612
Balance, shares at Jun. 30, 2010	80,042
Net income			31,617		78	31,695
Foreign currency translation adjustments, net of tax of $0				41,888	647	42,535
Unrealized losses on long-term investments, net of tax				443		443
Noncontrolling interest put arrangement			30			30
Dividends to noncontrolling interest					(292)	(292)
Share-based compensation		2,645				2,645
Stock issued upon exercise of options, value	13	7,657				7,670
Stock issued upon exercise of options, shares	518
Income tax benefit from options exercised		3,162				3,162
Balance, value at Sep. 30, 2010	2,014	130,926	721,397	16,498	6,665	877,500
Balance, shares at Sep. 30, 2010	80,560
Balance, value at Jun. 30, 2011	2,020	132,529	833,839	48,323	6,540	1,023,251
Balance, shares at Jun. 30, 2011	80,805					80,805
Net income			37,232		151	37,383
Foreign currency translation adjustments, net of tax of $0				(43,768)	(407)	(44,175)
Unrealized losses on long-term investments, net of tax				(924)		(924)
Noncontrolling interest put arrangement						0
Share-based compensation		3,005				3,005
Stock issued upon exercise of options, value	1	1,387				1,388
Stock issued upon exercise of options, shares	56
Repurchases of stock, value	(14)	(25,410)				(25,424)
Repurchases of stock, shares	(576)
Income tax benefit from options exercised		268				268
Balance, value at Sep. 30, 2011	$ 2,007	$ 111,779	$ 871,071	$ 3,631	$ 6,284	$ 994,772
Balance, shares at Sep. 30, 2011	80,285					80,285