Summary Of Significant Accounting Policies (Narrative) (Details) (USD $)	12 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2010
Cash and Cash Equivalents, Fair Value Disclosure		$ 81,123,000
Marketable Securities, Current	130,137,000	0
Cash and Cash Equivalents, at Carrying Value	144,027,000	213,579,000	89,056,000	95,170,000
Investigator fees	421,200,000	250,800,000	185,500,000
Number of counterparties in derivative contracts	10
Research and development expense	23,800,000	21,000,000	23,000,000
Transaction (losses) gains	4,100,000	300,000	(10,400,000)
Goodwill	319,478,000	255,455,000	262,313,000
Prepaid Expense and Other Assets, Current		10,400,000
Deferred financing costs reclassified to long-term debt		3,200,000
Office Furniture, Fixtures And Equipment [Member]
Estimated useful lives, years	P5Y
CRS [Member]
Goodwill	124,600,000
PCMS [Member]
Goodwill	20,800,000
Perceptive [Member]
Goodwill	174,100,000
Minimum [Member]
Marketable Securities Maturity Period	90 days
Minimum [Member] | Computer Software And Hardware [Member]
Estimated useful lives, minimum, years	3 years
Maximum [Member]
Marketable Securities Maturity Period	one year
Maximum [Member] | Computer Software And Hardware [Member]
Estimated useful lives, years	P8Y
Sales Revenue, Services, Net [Member]
Concentration Risk, Customer	Two	0
Accounts Receivable [Member]
Concentration Risk, Customer	two	0
Customer A [Member] | Sales Revenue, Services, Net [Member]
Percentage of consolidated service revenue attributable to largest client		17.00%
Customer A [Member] | Accounts Receivable [Member]
Percentage of consolidated service revenue attributable to largest client	18.00%
Customer B [Member] | Sales Revenue, Services, Net [Member]
Percentage of consolidated service revenue attributable to largest client		12.00%
Customer B [Member] | Accounts Receivable [Member]
Percentage of consolidated service revenue attributable to largest client	12.00%
Fair Value, Inputs, Level 1 [Member]
Cash and Cash Equivalents, Fair Value Disclosure	$ 0	$ 81,123,000