Consolidated Statements of Cash Flows (USD $) In Thousands	12 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2009
Operating activities
Net income	$ 82,109	$ 67,741	$ 55,686
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	50,627	44,367	35,713
Abandonment of intangible assets acquired in a business acquisition		920
Realized loss on marketable securities	71
Realized loss on sale, disposal, or impairment of long-lived assets	486	535	1,892
Amortization of premiums and discounts on short-term investments	163	127
Share-based compensation expense	21,677	22,380	19,473
Excess tax benefits derived from share-based compensation awards	(2,515)	(6,272)	(9,603)
Deferred taxes	1,614	179	(4,538)
Changes in operating assets and liabilities, excluding the effect of an acquisition:
Accounts receivable	(3,454)	(3,727)	276
Inventory	(1,466)	(2,224)	(1,921)
Prepaid expenses and other assets	9,936	3,792	(4,879)
Accounts payable	(2,610)	6,176	3,148
Accrued expenses and other liabilities	5,995	19,707	24,804
Net cash provided by operating activities	162,633	153,701	120,051
Investing activities
Purchases of property, plant and equipment	(37,405)	(101,326)	(76,286)
Proceeds from sale of equipment		177
Business acquisition, net of cash acquired		(6,496)
Purchases of marketable securities		(9,804)	(6,078)
Sales, maturities and redemptions of marketable securities	9,570	100	31,937
Purchases of intangible assets	(205)
Capitalization of software and website development costs	(6,290)	(6,516)	(7,168)
Net cash used in investing activities	(34,330)	(123,865)	(57,595)
Financing activities
Repayments of long-term debt	(5,222)	(13,848)	(3,219)
Payment of withholding taxes in connection with vesting of restricted share units	(5,653)	(6,142)	(4,176)
Repurchase of ordinary shares	(56,935)		(45,518)
Excess tax benefits derived from share-based compensation awards	2,515	6,272	9,603
Proceeds from issuance of shares	7,013	14,977	12,067
Net cash (used in) provided by financing activities	(58,282)	1,259	(31,243)
Effect of exchange rate changes on cash	3,804	(2,356)	(370)
Net increase in cash and cash equivalents	73,825	28,739	30,843
Cash and cash equivalents at beginning of period	162,727	133,988	103,145
Cash and cash equivalents at end of period	236,552	162,727	133,988
Cash paid during the period for:
Interest	219	883	1,391
Income taxes	$ 4,259	$ 1,573	$ 3,021