COMMITMENTS AND CONTINGENCIES (Details 2) (Agoda, USD $) In Millions, unless otherwise specified	1 Months Ended	36 Months Ended
Mar. 31, 2011	Dec. 31, 2010 Years
Agoda
Business acquisition
Contingent consideration payment under investing activities	$ 62.6
Measurement period for specified Agoda gross bookings and earning targets (in years)		3

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