v2.4.0.6
Related-party transactions (Details) (USD $)
0 Months Ended 3 Months Ended 26 Months Ended
Oct. 14, 2010
Jun. 30, 2012
Jun. 30, 2011
Jun. 30, 2012
Dec. 31, 2011
Related-party transactions [Abstract]          
Due to related party   $ 345,108   $ 345,108 $ 220,345
Sponsor's maximum commitment to advance funds   400,000   400,000  
Note due to related party   336,148   336,148   
Number of warrants purchased by the Sponsor 4,340,000        
Office space and other professional expenses recorded during period and accrued in Due to related party on the balance sheet   $ 22,500 $ 22,500 $ 153,750