XML 40 R56.htm IDEA: XBRL DOCUMENT v2.4.0.6
Stockholders' Equity (Warrants to Purchase Common Shares) (Detail) (Warrants, USD $)
 12 Months Ended
Jun. 30, 2012
Jun. 30, 2011
US$ Warrants
    
Schedule Of Outstanding Options And Warrants [Line Items]    
Number of Warrants, Balance at beginning of year 7,614,748 7,062,248
Number of Warrants, Issued   552,500
Number of Warrants, Expired (5,550,038)  
Number of Warrants, Balance and exercisable at end of year 2,064,710 7,614,748
Weighted Average Exercise Price, Balance at beginning of year $ 7.35 $ 7.53
Weighted Average Exercise Price, Issued   $ 5.00
Weighted Average Exercise Price, Expired $ 7.79  
Weighted Average Exercise Price, Balance and exercisable at end of year $ 6.17 $ 7.35
A$ warrants
    
Schedule Of Outstanding Options And Warrants [Line Items]    
Number of Warrants, Balance at beginning of year 205,479 3,935,433
Number of Warrants, Expired   (3,729,954)
Number of Warrants, Balance and exercisable at end of year 205,479 205,479
Weighted Average Exercise Price, Balance at beginning of year $ 7.68 $ 9.54
Weighted Average Exercise Price, Expired   $ 9.65
Weighted Average Exercise Price, Balance and exercisable at end of year $ 7.68 $ 7.68