Consolidated Statements Of Shareholders' Equity (USD $) In Thousands	Common Stock [Member]	Capital In Excess Of Par [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Non-controlling Interest [Member]	Total
Balance, value at Jun. 30, 2008	$ 2,022	$ 130,001	$ 479,546	$ 60,154	$ 5,892	$ 677,615
Balance, shares at Jun. 30, 2008	80,898
Net income	0	0	96,292	0	1,397	97,689
Foreign currency translation adjustments, net of tax benefit of $0	0	0	0	(43,340)	(534)	(43,874)
Unrealized losses on long-term investments, net of tax	0	0	0	(560)	0	(560)
Non-controlling interest put arrangement	0	0	(743)	0	0	(743)
Dividends to non-controlling interest	0	0	0	0	(721)	(721)
Share-based compensation	0	13,900	0	0	0	13,900
Stock issued upon exercise of options, value	7	2,859	0	0	0	2,866
Stock issued upon exercise of options, shares	267
Repurchases of stock, value	(21)	(22,221)	0	0	0	(22,242)
Repurchases of stock, shares	(855)
Income tax benefit from options exercised	0	1,101	0	0	0	1,101
Balance, value at Jun. 30, 2009	2,008	125,640	575,095	16,254	6,034	725,031
Balance, shares at Jun. 30, 2009	80,310
Net income	0	0	114,353	0	1,027	115,380
Foreign currency translation adjustments, net of tax benefit of $0	0	0	0	(42,222)	(714)	(42,936)
Unrealized losses on long-term investments, net of tax	0	0	0	135	0	135
Non-controlling interest put arrangement	0	0	302	0	0	302
Dividends to non-controlling interest	0	0	0	0	(115)	(115)
Share-based compensation	0	12,365	0	0	0	12,365
Stock issued upon exercise of options, value	34	23,276	0	0	0	23,310
Stock issued upon exercise of options, shares	1,378
Repurchases of stock, value	(41)	(47,594)	0	0	0	(47,635)
Repurchases of stock, shares	(1,646)
Income tax benefit from options exercised	0	3,775	0	0	0	3,775
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					80,042
Net income	0	0	144,059	0	554	144,613
Foreign currency translation adjustments, net of tax benefit of $0	0	0	0	74,968	856	75,824
Unrealized losses on long-term investments, net of tax	0	0	0	(812)	0	(812)
Non-controlling interest put arrangement	0	0	30	0	0	30
Purchase of minority interest	0	0	0	0	(682)	(682)
Dividends to non-controlling interest	0	0	0	0	(420)	(420)
Share-based compensation	0	12,448	0	0	0	12,448
Stock issued upon exercise of options, value	37	28,069	0	0	0	28,106
Stock issued upon exercise of options, shares	1,471
Repurchases of stock, value	(18)	(33,385)	0	0	0	(33,403)
Repurchases of stock, shares	(708)
Income tax benefit from options exercised	0	7,935	0	0	0	7,935
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