Consolidated Statement Of Shareholders' Equity (USD $) In Thousands, except Share data	Common Stock [Member]	Additional Paid-In Capital [Member]	Retained Earnings [Member]	Treasury Stock [Member]	Accumulated Other Comprehensive Income [Member]	Total
Balance at Jun. 30, 2010	$ 319	$ 297,137	$ 118,946	$ (62,303)	$ (1,482)	$ 352,617
Balance, shares at Jun. 30, 2010	31,897,000			(3,633,000)
Issuance of common stock upon exercise of options	13	20,419				20,432
Issuance of common stock upon exercise of options, shares	1,354,000
Issuance of common stock for employee stock purchase plan	1	1,753				1,754
Issuance of common stock for employee stock purchase plan, shares	107,000
Restricted stock, forfeitures and tax withholdings	1					1
Restricted stock, forfeitures and tax withholdings, shares	95,000
Amortization of share-based awards		4,904				4,904
Repurchase of common stock				(12,568)		(12,568)
Repurchase of common stock, shares				(720,000)
Excess tax benefit from share-based awards		3,008				3,008
Other		5				5
Net Income			40,989			40,989
Foreign currency translation adjustments					8,388	8,388	[1]
Net unrealized cash flow hedging gains (losses)					(1,765)	(1,765)	[2]
Balance at Jun. 30, 2011	334	327,226	159,935	(74,871)	5,141	417,765
Balance, shares at Jun. 30, 2011	33,453,000			(4,353,000)
Issuance of common stock upon exercise of options	5	5,565				5,570
Issuance of common stock upon exercise of options, shares	439,000
Issuance of common stock for employee stock purchase plan	1	1,989				1,990
Issuance of common stock for employee stock purchase plan, shares	74,000
Restricted stock, forfeitures and tax withholdings	(2)	(2,098)				(2,100)
Restricted stock, forfeitures and tax withholdings, shares	(177,000)
Amortization of share-based awards		5,057				5,057
Excess tax benefit from share-based awards		(39)				(39)
Other		40				40
Net Income			57,419			57,419
Foreign currency translation adjustments					(5,551)	(5,551)	[1]
Net unrealized cash flow hedging gains (losses)					1,576	1,576	[2]
Balance at Jun. 30, 2012	338	337,740	217,354	(74,871)	1,166	481,727
Balance, shares at Jun. 30, 2012	33,789,000			(4,353,000)
Issuance of common stock upon exercise of options	5	6,140				6,145
Issuance of common stock upon exercise of options, shares	512,000
Issuance of common stock for employee stock purchase plan		2,267				2,267
Issuance of common stock for employee stock purchase plan, shares	67,000
Restricted stock, forfeitures and tax withholdings		(2,748)				(2,748)
Restricted stock, forfeitures and tax withholdings, shares	(30,000)
Amortization of share-based awards		5,607				5,607
Repurchase of common stock				(12,905)		(12,905)
Repurchase of common stock, shares				(333,000)
Excess tax benefit from share-based awards		(22)				(22)
Other		76				76
Net Income			40,711			40,711
Foreign currency translation adjustments					(6,004)	(6,004)	[1]
Net unrealized cash flow hedging gains (losses)					428	428	[2]
Balance at Jun. 30, 2013	$ 343	$ 349,060	$ 258,065	$ (87,776)	$ (4,410)	$ 515,282
Balance, shares at Jun. 30, 2013	34,338,000			(4,686,000)

[1] Foreign currency translation adjustments are not adjusted for income taxes since they relate to indefinite investments in non-U.S subsidiaries.

[2] Net of tax expense of $26 and $606 for the year ended June 30, 2013 and 2012, respectively, and net of tax benefit of $572 for the year ended June 30, 2011.