v2.4.0.6
Preferred Share Purchase Rights (Details) (USD $)
12 Months Ended
Jun. 30, 2012
D
Purchase_Right
Jul. 02, 2011
Class of Stock [Line Items]    
Preferred shares, par value $ 1 $ 1
Voting rights of preferred shares one common share or one one-hundredth  
Preferred Share Purchase Rights (Textual) [Abstract]    
Number of preferred share purchase right 1  
Number of business days 10  
Merger or other business combinations 50.00%  
Dividend rights expired date May 01, 2014  
Redeemed price of preferred shares $ 0.01  
Preferred shares, shares issued      
Market value multiplier market value equal to two times the exercise price of the Right  
Minimum [Member]
   
Class of Stock [Line Items]    
Beneficial ownership of outstanding common shares 15.00%  
Common Class A [Member]
   
Class of Stock [Line Items]    
Preferred shares, par value $ 1  
Initial exercise price of preferred share per unit 25  
Voting rights of preferred shares one-tenth of one vote  
Common Class B [Member]
   
Class of Stock [Line Items]    
Number of votes 10