Consolidated Balance Sheets (Parentheticals) (USD $)	Jun. 30, 2012	Jun. 30, 2011
Treasury Stock, Shares	2,855,180	948,341
Allowance for Doubtful Accounts Receivable, Current	$ 20,871,000	$ 12,636,000
Common Class A [Member]
Common Stock, Par or Stated Value Per Share	$ 0.01	$ 0.01
Common Stock, Shares, Authorized	300,000,000	300,000,000
Common Stock, Shares, Issued	63,521,654	57,897,889
Common Stock, Shares, Outstanding	60,666,475	56,949,548
Common Class B [Member]
Common Stock, Par or Stated Value Per Share	$ 0.01	$ 0.01
Common Stock, Shares, Authorized	93,500,000	93,500,000
Common Stock, Shares, Issued	11,035,878	16,651,890
Common Stock, Shares, Outstanding	11,035,878	16,651,890