Valuation and Qualifying Accounts (Details) (USD $)	12 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2010
Allowance for uncollectible accounts
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Year	$ 12,636,000	$ 7,975,000	$ 4,452,000
Additions Charged Against (Credited to) Revenue	21,722,000	13,004,000	11,759,000
Additions Charged to Other Accounts	0	0	0
Additions Resulting From Acquisitions	0	0	0
Deductions	(13,487,000)	(8,343,000)	(8,236,000)
Balance at End of Year	20,871,000	12,636,000	7,975,000
Allowance for unbillable accounts
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Year	16,723,000	11,696,000	9,115,000
Additions Charged Against (Credited to) Revenue	3,168,000	5,027,000	2,581,000
Additions Charged to Other Accounts	0	0	0
Additions Resulting From Acquisitions	0	0	0
Deductions	0	0	0
Balance at End of Year	19,891,000	16,723,000	11,696,000
Valuation allowance for deferred tax assets
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Year	62,454,000	37,206,000	10,884,000
Additions Charged Against (Credited to) Revenue	0	0	0
Additions Charged to Other Accounts	4,655,000	28,892,000	(20,868,000)
Additions Resulting From Acquisitions	0	0	47,190,000
Deductions	(27,063,000)	(3,644,000)	0
Balance at End of Year	$ 40,046,000	$ 62,454,000	$ 37,206,000