Condensed Consolidated Statements Of Income (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Revenues [Abstract]
Service revenue	$ 449,245	$ 394,753
Reimbursement revenue	79,819	67,767
Total revenue	529,064	462,520
Costs and Expenses [Abstract]
Direct costs	303,194	279,404
Reimbursable out-of-pocket expenses	79,819	67,767
Selling, general and administrative	84,912	70,028
Depreciation	15,462	14,795
Amortization of Intangible Assets	3,796	1,084
Restructuring (benefit) charges	0	(310)
Total costs and expenses	487,183	432,768
Income from operations	41,881	29,752
Interest Income (Expense), Net	(2,764)	(1,436)
Miscellaneous income (expense)	(201)	(952)
Total other expense	(2,965)	(2,388)
Income before income taxes	38,916	27,364
Provision for income taxes	12,962	12,300
Net income	$ 25,954	$ 15,064
Earnings per common share
Basic	$ 0.46	$ 0.25
Diluted	$ 0.45	$ 0.25
Shares used in computing earnings per common share
Basic	56,254	60,111
Diluted	57,395	61,226