Condensed Consolidated Statements Of Income (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Sep. 30, 2012	Sep. 30, 2011
Income Statement [Abstract]
Service revenue	$ 394,753	$ 314,735
Reimbursement revenue	67,767	45,914
Total revenue	462,520	360,649
Direct costs	279,404	222,174
Reimbursable out-of-pocket expenses	(67,767)	(45,914)
Selling, general and administrative	70,028	60,989
Depreciation	14,795	14,281
Amortization	1,084	2,141
Restructuring charge (benefit)	310	(2,700)
Total costs and expenses	432,768	348,199
Income from operations	29,752	12,450
Interest income	1,107	1,154
Interest expense	(2,543)	(3,759)
Miscellaneous (expense) income	(952)	4,229
Other expense	(2,388)	1,624
Income before income taxes	27,364	14,074
Provision for income taxes	12,300	4,513
Net income	15,064	9,561
Earnings per common share
Basic	$ 0.25	$ 0.16
Diluted	$ 0.25	$ 0.16
Shares used in computing earnings per common share
Basic	60,111	59,044
Diluted	61,226	60,079
Statement [Line Items]
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	$ 28,936	$ (23,859)