Condensed Consolidated Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Cash flow from operating activities:
Net Income (Loss) Attributable to Parent	$ 36,407	$ 22,501
Depreciation and amortization	33,384	33,377
Stock-based compensation	5,435	5,485
Excess Tax Benefit (Tax Deficiency) from Share-based Compensation, Operating Activities	(2,173)	0
Provision for losses on receivables	32	1,145
Deferred income taxes	11,390	(9,035)
Other Noncash Income (Expense)	(1,002)	666
Changes in operating assets and liabilities	14,625	61,616
Net cash provided by (used in) operating activities:	98,098	115,755
Cash flow from investing activities:
Payments to Acquire Businesses, Net of Cash Acquired	(74,692)	0
Increase (Decrease) In Marketable Securities	(90,524)	(20,703)
Purchases of property and equipment	(31,360)	(27,513)
Proceeds from sale of assets	1,670	0
Proceeds from Collection of Notes Receivable	594	0
Net cash used in investing activities	(194,312)	(48,216)
Cash flow from financing activities:
Proceeds from issuance of common stock	7,064	1,948
Payments for Repurchase of Common Stock	(98,692)	0
Excess Tax Benefit (Tax Deficiency) from Share-based Compensation, Financing Activities	2,173	0
Borrowing under lines of credit	345,000	155,000
Repayments under lines of credit	(180,000)	(157,500)
Repayments under other debt	0	(628)
Net cash (used in) provided by financing activities	75,545	(1,180)
Effect of exchange rate changes on cash and cash equivalents	11,193	(21,760)
Net increase (decrease) in cash and cash equivalents	(9,476)	44,599
Cash and cash equivalents at beginning of period	213,579	89,056
Cash and cash equivalents at end of period	204,103	133,655
Supplemental disclosures of cash flow information
Interest	4,534	6,326
Income taxes, net of refunds	$ 11,641	$ 3,613