Consolidated Statements Of Stockholders' Equity (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		12 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2009
Shares issued under stock option/employee stock purchase plans, shares			1,143,000	570,000	651,000
Shares issued under stock option/employee stock purchase plans, value			$ 12,120	$ 7,686	$ 6,817
Stock-based compensation			11,131	10,162	7,017
Employee Service Share-based Compensation, Tax Benefit Realized from Exercise of Stock Options			5,256
Purchase of non-controlling interests				(474)
Unrealized gain (loss) on derivative instruments, net of taxes			(1,660)	7,156	(6,889)
Foreign currency translation adjustment			(46,334)	53,133	(23,677)
Net income	17,788	(1,571)	63,158	48,786	41,542
Total comprehensive income (loss)			15,164	109,075	10,976
Balance, shares	60,147,007	59,004,028	60,147,007	59,004,028
Balance, value	609,675	566,004	609,675	566,004	439,555	414,745
Common Stock [Member]
Shares issued under stock option/employee stock purchase plans, value			17	6	6
Balance, shares	60,147,000	59,004,000	60,147,000	59,004,000	58,434,000	57,783,000
Balance, value	601	584	601	584	578	572
Additional Paid-In Capital [Member]
Shares issued under stock option/employee stock purchase plans, value			12,103	7,680	6,811
Balance, value	279,535	251,045	279,535	251,045	233,677	219,849
Retained Earnings [Member]
Balance, value	358,678	295,520	358,678	295,520	246,734	205,192
Accumulated Other Comprehensive Income (Loss) [Member]
Balance, value	$ (29,139)	$ 18,855	$ (29,139)	$ 18,855	$ (41,434)	$ (10,868)