Condensed Consolidated Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Sep. 30, 2012	Sep. 30, 2011
Cash flow from operating activities:
Net Income (Loss) Attributable to Parent	$ 15,064	$ 9,561
Depreciation and amortization	15,879	16,422
Stock-based compensation	2,736	2,623
Provision for losses on receivables	(284)	1,385
Deferred income taxes	3,252	(5,888)
Other Noncash Income (Expense)	(948)	518
Changes in operating assets and liabilities	308	25,108
Net cash provided by (used in) operating activities:	36,007	49,729
Cash flow from investing activities:
Increase (Decrease) In Marketable Securities	(25,763)	(20,703)
Purchases of property and equipment	(11,511)	(11,620)
Net cash used in investing activities	(37,274)	(32,323)
Cash flow from financing activities:
Proceeds from issuance of common stock	1,189	180
Payments for Repurchase of Common Stock	(50,000)	0
Borrowing under lines of credit	165,000	80,000
Repayments under lines of credit	(111,250)	(56,250)
Repayments under other debt	0	(314)
Net cash (used in) provided by financing activities	4,939	23,616
Effect of exchange rate changes on cash and cash equivalents	6,078	(17,976)
Net increase (decrease) in cash and cash equivalents	9,750	23,046
Cash and cash equivalents at beginning of period	213,579
Cash and cash equivalents at end of period	223,329	112,102
Supplemental disclosures of cash flow information
Interest	2,466	3,745
Income taxes, net of refunds	$ 5,072	$ 1,456