FAIR VALUE (Details 4) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Including    
Current portion of contingent consideration $ 23,456 $ 31,519
Non-current portion of contingent consideration 4,039 19,900
Contingent consideration
   
Movement in contingent consideration    
Balance at the beginning of the period 51,419 18,552
Assumed from the merger with VanceInfo   16,775
Increase in contingent consideration as a result of business acquisitions 3,294 20,355
Less: Payments made during the period (22,661) (3,047)
Shares issuable in connection with business acquisition   (918)
Settlement by issuance of common shares (3,203)  
Add: Changes in fair values (1,164) (659)
Foreign currency translation adjustments (190) 361
Balance at the end of the period 27,495 51,419
Including    
Current portion of contingent consideration 23,456  
Non-current portion of contingent consideration $ 4,039