Consolidated Statement Of Shareholders' Equity (USD $) In Thousands, unless otherwise specified	Common Stock [Member]	Additional Paid-In Capital [Member]	Retained Earnings [Member]	Treasury Stock [Member]	Accumulated Other Comprehensive Income [Member]	Total
Balance at Jun. 30, 2011	$ 334	$ 327,226	$ 159,935	$ (74,871)	$ 5,141	$ 417,765
Balance, shares at Jun. 30, 2011	33,453			(4,353)
Issuance of common stock upon exercise of options	3	4,059				4,062
Issuance of common stock upon exercise of options,shares	318
Issuance of restricted stock, net of forfeitures	(1)	(2,098)				(2,099)
Issuance of restricted stock, net of forfeitures,shares	(177)
Issuance of common stock for employee stock purchase plan		958				958
Issuance of common stock for employee stock purchase plan, shares	39
Amortization of share-based awards		2,500				2,500
Excess tax benefit from share-based awards		4,099				4,099
Comprehensive Income:
Net Income			51,603			51,603
Foreign currency translation adjustments					(5,637)	(5,637)
Disclosure of reclassification amounts, net of taxes
Unrealized hedging gain arising during the period					2,535	2,535
Less: reclassification adjustment for hedging losses included in net income					503	503
Net unrealized cash flow hedging gain					2,032	2,032
Total comprehensive income (loss)			51,603		(3,605)	47,998
Balance at Dec. 31, 2011	$ 336	$ 336,744	$ 211,538	$ (74,871)	$ 1,536	$ 475,283
Balance, shares at Dec. 31, 2011	33,633			(4,353)