Consolidated Statements Of Income and Comprehensive Income (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2011
Income Statement [Abstract]
Sales Revenue, Services, Net	$ 1,734,442	$ 1,396,508	$ 1,212,099
Reimbursement revenue	261,524	221,726	210,326
Total revenue	1,995,966	1,618,234	1,422,425
Costs and expenses:
Direct Operating Costs	1,207,536	971,829	797,784
Cost of Reimbursable Expense	261,524	221,726	210,326
Selling, General and Administrative Expense	318,806	263,462	259,099
Depreciation	63,187	57,419	55,549
Amortization	9,999	8,753	9,931
Restructuring charge (benefit)	(1,209)	6,243	8,106
Total costs and expenses	1,859,843	1,529,432	1,340,795
Income from operations	136,123	88,802	81,630
Interest income	3,829	5,381	5,167
Interest expense	(11,067)	(12,384)	(17,010)
Miscellaneous expense, net	4,265	(2,093)	(11,153)
Total other expense, net	(2,973)	(9,096)	(22,996)
Income before provision for income taxes	133,150	79,706	58,634
Provision for income taxes	37,178	16,548	9,848
Net Income (Loss) Attributable to Parent	95,972	63,158	48,786
Weighted average shares:
Basic	58,388	59,464	58,634
Diluted	59,447	60,426	59,874
Earnings per share:
Basic	$ 1.64	$ 1.06	$ 0.83
Diluted	$ 1.61	$ 1.05	$ 0.81
Comprehensive Income
Net Income (Loss) Attributable to Parent	95,972	63,158	48,786
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax	624	(1,660)	7,156
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax	(1,523)	(46,334)	53,133
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	$ 95,073	$ 15,164	$ 109,075