Summary Of Significant Accounting Policies (Narrative) (Details) $ in Thousands	12 Months Ended
Jun. 30, 2015 USD ($)	Jun. 30, 2014 USD ($)	Jun. 30, 2013 USD ($)
Cash Equivalents, at Carrying Value	$ 0
Investigator fees	$ 461,000	$ 523,100	$ 421,200
Number of counterparties in derivative contracts	7
Research and development expense	$ 24,000	26,900	23,800
Transaction (losses) gains	$ 7,000	$ (3,500)	$ 4,100
Office Furniture, Fixtures And Equipment [Member]
Estimated useful lives, minimum, years	5 years
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	1 year
Maximum [Member] \| Computer Software And Hardware [Member]
Estimated useful lives, minimum, years	8 years
Customer A [Member] \| Sales Revenue, Services, Net [Member]
Percentage of consolidated service revenue attributable to largest client	14.00%	16.00%	17.00%
Customer A [Member] \| Accounts Receivable [Member]
Percentage of consolidated service revenue attributable to largest client	12.00%	20.00%
Customer B [Member] \| Sales Revenue, Services, Net [Member]
Percentage of consolidated service revenue attributable to largest client		11.00%	12.00%
Customer B [Member] \| Accounts Receivable [Member]
Percentage of consolidated service revenue attributable to largest client	11.00%

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For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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