v2.4.0.6
Sponsor's ordinary shares (Details) (USD $)
0 Months Ended 6 Months Ended
Oct. 05, 2010
Jun. 30, 2012
Oct. 14, 2010
Ordinary shares issued to Sponsor, shares   1,437,500  
Value from equity issuance   $ 25,000  
Ordinary shares issued to Sponsor, price per share   $ 0.01739 $ 10.0
Ordinary shares repurchased from Sponsor, shares 287,500    
Ordinary shares repurchased from Sponsor, aggregate purchase price $ 1    
Applicable percentage of shares   33.00%  
Applicable recalculated purchase price of shares   $ 0.01739  
Agreement Covering First Half of Shares Owned by Sponsor [Member]
     
Percent of shares covered by agreement   50.00%  
Stock price triggering release of shares   $ 11.5  
Agreement Covering Second Half of Shares Owned by Sponsor [Member]
     
Percent of shares covered by agreement   50.00%  
Stock price triggering release of shares   $ 15.0