Consolidated Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2010
CASH FLOWS PROVIDED BY (USED IN) OPERATING ACTIVITIES
Net income	$ 79,225	$ 54,982	$ 28,619
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation and amortization	30,459	24,124	18,772
Unrealized loss on available for sale investment	0	0	1,210
Other Noncash Income Tax Expense	1,642	5,160	4,046
Equity in net (income) loss of equity-method investees	(1,140)	2,148	1,739
Stock based compensation	8,290	9,031	6,979
Tax benefit from stock based compensation	(1,681)	(2,525)	(955)
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability - Consolidated Amount	(15,866)	(4,177)	0
Interest accretion on contingent consideration	736	1,691	0
Impairment of Long-Lived Assets to be Disposed of	16,001	0	0
Other non-cash items, net	599	329	771
Increase (decrease) in cash attributable to changes in operating assets and liabilities, net of amounts applicable to acquisitions:
Accounts receivable	(4,316)	(22,545)	4,593
Inventories	(5,597)	(5,677)	5,856
Other current assets	(1,556)	778	4,719
Other assets	(5,200)	(6,141)	(3,267)
Accounts payable and accrued expenses	12,489	4,459	(15,225)
Acquisition-related contingent consideration	850	650	0
Income taxes	5,363	(7,379)	11,263
Net cash provided by operating activities	121,960	58,658	71,030
CASH FLOWS PROVIDED BY (USED IN) INVESTING ACTIVITIES
Acquisitions, net of cash acquired	(257,264)	(45,339)	(51,415)
Purchases of property and equipment	(20,427)	(11,490)	(11,428)
Proceeds from disposals of property and equipment	93	1,617	85
Repayments from equity-method investees	6,934	(271)	0
Net cash used in investing activities	(270,664)	(55,483)	(62,758)
CASH FLOWS PROVIDED BY (USED IN) FINANCING ACTIVITIES
Proceeds from exercises of stock options, net of related expenses	14,179	17,912	2,139
Borrowings under bank revolving credit facility	160,989	4,100	(33,400)
Repayments of other long-term debt, net	(460)	(22)	(88)
Acquisition-related contingent consideration	(32,380)	(14,750)	0
Excess tax benefits from stock based compensation	7,130	2,115	188
Shares withheld for payment of employee payroll taxes	(2,035)	(2,221)	(1,220)
Net cash provided by financing activities	147,423	7,134	(32,381)
Effect of exchange rate changes on cash	3,659	(58)	(33)
Net increase (decrease) in cash and cash equivalents	2,378	10,251	(24,142)
Cash and cash equivalents at beginning of period	27,517	17,266	41,408
Cash and cash equivalents at end of period	$ 29,895	$ 27,517	$ 17,266