v2.4.0.6

Initial public offering (Details) (USD $) In Millions, except Share data, unless otherwise specified	0 Months Ended	9 Months Ended
	Oct. 14, 2010	Dec. 31, 2010	Jun. 30, 2012	Dec. 31, 2011	Jun. 30, 2011
Units issued in offering	4,600,000
Units issued in offering pursuant to over-allotment option	600,000
Ordinary shares issued to Sponsor, price per share	$ 10.0		$ 0.01739
Ordinary shares, par value per share			$ 0.0001	$ 0.0001	$ 0.0001
Underwriter fee percentage		2.25%
Underwriters fees recorded as a reduction in additional paid-in capital		$ 1.1
Initial Public Offering Warrants [Member]
Warrant exercise price			7.5
Warrant redemption price			$ 0.01
Redemption of warrants, triggering stock price			$ 15.0

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