Consolidated Statements Of Stockholders' Equity (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		12 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2010
Shares issued under stock option/employee stock purchase plans, shares			1,470,000	1,143,000	570,000
Shares issued under stock option/employee stock purchase plans, value			$ 15,271	$ 12,120	$ 7,686
Stock-based compensation			11,168	11,131	10,162
Employee Service Share-based Compensation, Tax Benefit Realized from Exercise of Stock Options			5,400
Stock Repurchased During Period, Shares			(5,306,000)
Stock Repurchased and Retired During Period, Value			(197,641)
Purchase of non-controlling interests				5,256
Unrealized gain (loss) on derivative instruments, net of taxes			624	(1,660)	7,156
Foreign currency translation adjustment			(1,523)	(46,334)	53,133
Net income	30,041	17,788	95,972	63,158	48,786
Balance, shares	56,310,582	60,147,007	56,310,582	60,147,007
Balance, value	538,946	609,675	538,946	609,675	566,004	439,555
Common Stock [Member]
Shares issued under stock option/employee stock purchase plans, value			15	17	6
Stock Repurchased and Retired During Period, Value			(53)
Balance, shares	56,311,000	60,147,000	56,311,000	60,147,000	59,004,000	58,434,000
Balance, value	563	601	563	601	584	578
Additional Paid-In Capital [Member]
Shares issued under stock option/employee stock purchase plans, value			15,256	12,103	7,680
Stock Repurchased and Retired During Period, Value			(197,588)
Balance, value	113,771	279,535	113,771	279,535	251,045	233,677
Retained Earnings [Member]
Balance, value	454,650	358,678	454,650	358,678	295,520	246,734
Accumulated Other Comprehensive Income (Loss) [Member]
Balance, value	$ (30,038)	$ (29,139)	$ (30,038)	$ (29,139)	$ 18,855	$ (41,434)