Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2013
Cash flow from operating activities:
Net income	$ 147,821	$ 129,094	$ 95,972
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	84,939	81,328	73,186
Stock-based compensation	17,932	15,329	11,168
Loss (gain) on disposal of assets	317	273	(884)
Deferred income taxes	(16,128)	(14,704)	2,830
Impairment charges	0	0	1,071
Excess tax benefit from stock-based compensation	(7,185)	(7,850)	(5,624)
Other non-cash items	(5,315)	(953)	659
Changes in assets and liabilities, net of effects from acquisitions:
Billed and unbilled accounts receivable	(24,445)	(23,089)	(51,292)
Prepaid expenses and other current assets	(3,090)	(10,803)	(6,751)
Other assets	(11,941)	6,780	(6,693)
Accounts payable	19,000	11,529	3,955
Deferred revenue	(33,661)	46,687	47,531
Accrued expenses and other current liabilities	9,682	28,861	18,659
Long-term income taxes payable, net of long-term income taxes receivable	(10,626)	13,119	(1,440)
Other liabilities	(9,457)	11,600	1,468
Net cash provided by operating activities	157,843	287,201	183,815
Cash flow from investing activities:
Purchases of marketable securities	0	(250,318)	(312,403)
Proceeds from sale of marketable securities	88,564	291,824	182,800
Purchases of property and equipment	(80,167)	(72,585)	(81,089)
Acquisition of businesses	(104,462)	(150)	(97,099)
Proceeds from collection of note receivable	0	0	659
Proceeds from sale of property and equipment	0	0	1,677
Net cash used in investing activities	(96,065)	(31,229)	(305,455)
Cash flow from financing activities:
Proceeds from issuance of common stock, net of tax payments for cashless exercises	12,657	6,762	15,271
Payments for share repurchase	0	(154,906)	(195,149)
Excess tax benefit from stock-based compensation	7,185	7,850	5,624
Borrowings under credit agreement/facility	429,579	502,500	795,000
Repayments under credit agreement/facility	(422,500)	(590,000)	(577,500)
Borrowings under factoring agreement	0	4,497	10,394
Payments for debt issuance costs	(684)	(671)	(1,231)
Repayments under other debt	0	0	0
Net cash provided by (used in) financing activities	26,237	(223,968)	52,409
Effect of Exchange Rate on Cash and Cash Equivalents	(68,782)	12,140	(321)
Net increase (decrease) in cash and cash equivalents	19,233	44,144	(69,552)
Cash and cash equivalents at beginning of year	188,171	144,027	213,579
Cash and cash equivalents at end of year	207,404	188,171	144,027
Supplemental disclosures of cash flow information
Non-cash capital expenditures	(6,855)	0	0
Non-cash debt settlement under factoring agreement	0	14,891	0
Interest	10,820	13,710	9,962
Income taxes, net of refunds	$ 78,432	$ 61,027	$ 37,764