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Restricted Stock (Tables)
12 Months Ended
Jun. 30, 2012
Restricted Stock [Abstract]  
Schedule of conversion of stock
       
 Stock Class Number of Shares Conversion Date 
 B-3 5,661,591 January 1, 2013 
 B-4 5,374,768 January 1, 2014 
Schedule of restricted A shares, vesting by year
       
 Stock Class Number of Shares Conversion Date 
 A 1,688,735 January 1, 2013