Consolidated Statement Of Stockholders' Equity (USD $) In Thousands, except Share data	Total	Common Stock [Member]	Additional Paid-In Capital [Member]	Retained Earnings [Member]	Treasury Stock [Member]	Accumulated Other Comprehensive Income (Loss) [Member]
Balance at Jun. 30, 2009	$ 701,323	$ 417	$ 503,161	$ 212,285	$ (16,309)	$ 1,769
Balance, shares at Jun. 30, 2009		41,699,509			1,001,898
Net income	28,619			28,619
Foreign currency translation adjustments, net of tax	(9,051)					(9,051)
Change in deferred gains on cash flow hedging instruments, net of tax	(49)					(49)
Change in unrealized loss on available for sale investment, net of tax	460					460
Total comprehensive income	19,979
Issuance of common stock pursuant to compensation plans	2,139	3	2,136
Issuance of common stock pursuant to compensation plans, shares		336,111
Stock based compensation income tax effects	164		164
Shares withheld for payment of employee payroll taxes due on shares issued under stock based compensation plans	(1,220)				1,220
Shares withheld for payment of employee payroll taxes due on shares issued under stock based compensation plans, shares					70,807
Stock based compensation charge	6,979		6,979
Stock Issued During Period, Shares, Acquisitions		1,558,442
Stock Issued During Period, Value, Acquisitions	35,393	16	35,377
Noncash or Part Noncash Acquisition, Noncash Financial or Equity Instrument Consideration, Shares Issued		52,615
Other Significant Noncash Transaction, Value of Consideration Given	966	1	965
Balance at Jun. 30, 2010	765,723	437	548,782	240,904	(17,529)	(6,871)
Balance, shares at Jun. 30, 2010		43,646,677			1,072,705
Net income	54,982			54,982
Foreign currency translation adjustments, net of tax	14,641					14,641
Change in deferred gains on cash flow hedging instruments, net of tax	(724)					(724)
Change in unrealized loss on available for sale investment, net of tax	98					98
Total comprehensive income	68,997
Issuance of common stock pursuant to compensation plans	17,912	12	17,900
Issuance of common stock pursuant to compensation plans, shares		1,156,235
Stock based compensation income tax effects	2,525		2,525
Shares withheld for payment of employee payroll taxes due on shares issued under stock based compensation plans	(2,221)				2,221
Shares withheld for payment of employee payroll taxes due on shares issued under stock based compensation plans, shares					71,905
Stock based compensation charge	9,031		9,031
Stock Issued During Period, Shares, Acquisitions		242,185
Stock Issued During Period, Value, Acquisitions	4,736	2	4,734
Balance at Jun. 30, 2011	866,703	451	582,972	295,886	(19,750)	7,144
Balance, shares at Jun. 30, 2011	45,045,097	45,045,097			1,144,610
Net income	79,225			79,225
Foreign currency translation adjustments, net of tax	(13,573)					(13,573)
Change in deferred gains on cash flow hedging instruments, net of tax	842					842
Change in unrealized loss on available for sale investment, net of tax	204					204
Total comprehensive income	66,698
Issuance of common stock pursuant to compensation plans	16,135	11	16,124
Issuance of common stock pursuant to compensation plans, shares		1,110,815
Stock based compensation income tax effects	8,811		8,811
Shares withheld for payment of employee payroll taxes due on shares issued under stock based compensation plans	(2,035)				2,035
Shares withheld for payment of employee payroll taxes due on shares issued under stock based compensation plans, shares					58,194
Stock based compensation charge	8,290		8,290
Balance at Jun. 30, 2012	$ 964,602	$ 462	$ 616,197	$ 375,111	$ (21,785)	$ (5,383)
Balance, shares at Jun. 30, 2012	46,155,912	46,155,912			1,202,804