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Condensed Statement of Changes in Shareholders' Deficit (USD $)
 3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Jun. 30, 2012
Jun. 30, 2011
Dec. 31, 2011
Shareholders’ deficit - opening balance     $ (8,199,023) [1]    
Net loss for the year (3,411,334) 4,691,816 (2,505,712) 4,861,386  
Adjustment of redeembable Shares to redemption value     1,584,354   6,142,719
Shareholders’ deficit - closing balance $ (9,120,381)   $ (9,120,381)   $ (8,199,023) [1]
[1] Derived from audited Statement of Financial Condition as of December 31, 2011.