SCHEDULE I CONDENSED FINANCIAL INFORMATION OF PARENT COMPANY (Details 5) (USD $)
In Thousands, except Share data, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Increase (Decrease) in Stockholders' Equity      
Balance $ 540,985    
Balance (in shares) 88,312,068    
Repurchase of common shares (30,000)    
Issuance of common shares for share-based compensation   14 2
Issuance of common share for business acquisition   326,778  
Share-based compensation 23,000 11,125 5,656
Acquisition of non-controlling interest (6,294) (12,938)  
Stock option exercise 4,201 1,933 4,235
Disposal of variable interest entity (71)    
Shares issuable in connection with business acquisition 3,430 918  
Foreign currency translation adjustments 5,846 2,460 5,738
Balance 550,273 540,985  
Balance (in shares) 85,503,321 88,312,068  
Common shares
     
Increase (Decrease) in Stockholders' Equity      
Balance (in shares) 88,312,068 42,720,067 41,536,412
Repurchase of common shares (in shares) (4,643,359) (1) (2)
Cancellation of common shares and treasury stock (4)    
Cancellation of common shares and treasury stock (in shares) (379,278)    
Reissuance of treasury stock for share based compensation (in shares) 1,743,359    
Issuance of common shares for share-based compensation   3 2
Issuance of common shares for share-based compensation (in shares)   2,150,814 1,075,406
Issuance of common share for business acquisition   60  
Issuance of common share for business acquisition (in shares) 319,556 43,441,188  
Vesting of nonvested shares award (in shares) 150,975   108,251
Balance (in shares) 85,503,321 88,312,068 42,720,067
Treasury stock
     
Increase (Decrease) in Stockholders' Equity      
Repurchase of common shares (29,907)    
Cancellation of common shares and treasury stock 18,678    
Reissuance of treasury stock for share based compensation 11,229    
Additional paid-in capital
     
Increase (Decrease) in Stockholders' Equity      
Repurchase of common shares (93)    
Cancellation of common shares and treasury stock (18,674)    
Reissuance of treasury stock for share based compensation (11,229)    
Issuance of common shares for share-based compensation   11  
Issuance of common share for business acquisition 2,464 326,718  
Balance brought forward from VanceInfo as a result of the merger   (11,407)  
Share-based compensation 23,000 11,125 5,656
Vesting of nonvested shares of a subsidiary (1,363)    
Acquisition of non-controlling interest (3,592) (12,040)  
Stock option exercise 4,201 1,933 4,235
Disposal of variable interest entity (71)    
Shares to be issued in connection with business acquisition
     
Increase (Decrease) in Stockholders' Equity      
Issuance of common share for business acquisition (2,464)    
Balance brought forward from VanceInfo as a result of the merger   619  
Shares issuable in connection with business acquisition 3,430 918  
Accumulated other comprehensive income
     
Increase (Decrease) in Stockholders' Equity      
Foreign currency translation adjustments 5,846 2,453 5,738
Parent Company
     
Increase (Decrease) in Stockholders' Equity      
Balance 540,985 208,484 174,952
Balance (in shares) 88,312,068    
Repurchase of common shares (30,000)    
Issuance of common shares for share-based compensation   14 2
Issuance of common share for business acquisition   326,778  
Balance brought forward from VanceInfo as a result of the merger   (1,270)  
Share-based compensation 23,000 11,125 5,656
Vesting of nonvested shares of a subsidiary (1,363)    
Acquisition of non-controlling interest (3,592) (12,040)  
Stock option exercise 4,201 1,933 4,235
Disposal of variable interest entity (71)    
Shares issuable in connection with business acquisition 3,430 918  
Net income 7,837 2,590 17,901
Foreign currency translation adjustments 5,846 2,453 5,738
Balance 550,273 540,985 208,484
Balance (in shares) 85,503,321 88,312,068  
Parent Company | Common shares
     
Increase (Decrease) in Stockholders' Equity      
Balance 123 60 58
Balance (in shares) 88,312,068 42,720,067 41,536,412
Repurchase of common shares (in shares) (4,643,359) (1) (2)
Cancellation of common shares and treasury stock (4)    
Cancellation of common shares and treasury stock (in shares) (379,278)    
Reissuance of treasury stock for share based compensation (in shares) 1,743,359    
Issuance of common shares for share-based compensation   3 2
Issuance of common shares for share-based compensation (in shares)   2,150,814 1,075,406
Issuance of common share for business acquisition   60  
Issuance of common share for business acquisition (in shares) 319,556 43,441,188  
Vesting of nonvested shares award (in shares) 150,975   108,251
Balance 119 123 60
Balance (in shares) 85,503,321 88,312,068 42,720,067
Parent Company | Treasury stock
     
Increase (Decrease) in Stockholders' Equity      
Repurchase of common shares (29,907)    
Cancellation of common shares and treasury stock 18,678    
Reissuance of treasury stock for share based compensation 11,229    
Parent Company | Additional paid-in capital
     
Increase (Decrease) in Stockholders' Equity      
Balance 502,748 186,408 176,517
Repurchase of common shares (93)    
Cancellation of common shares and treasury stock (18,674)    
Reissuance of treasury stock for share based compensation (11,229)    
Issuance of common shares for share-based compensation   11  
Issuance of common share for business acquisition 2,464 326,718  
Balance brought forward from VanceInfo as a result of the merger   (11,407)  
Share-based compensation 23,000 11,125 5,656
Vesting of nonvested shares of a subsidiary (1,363)    
Acquisition of non-controlling interest (3,592) (12,040)  
Stock option exercise 4,201 1,933 4,235
Disposal of variable interest entity (71)    
Balance 497,391 502,748 186,408
Parent Company | Shares to be issued in connection with business acquisition
     
Increase (Decrease) in Stockholders' Equity      
Balance 1,537    
Issuance of common share for business acquisition (2,464)    
Balance brought forward from VanceInfo as a result of the merger   619  
Shares issuable in connection with business acquisition 3,430 918  
Balance 2,503 1,537  
Parent Company | (Accumulated deficit) Retained earnings
     
Increase (Decrease) in Stockholders' Equity      
Balance 17,797 5,689 (12,212)
Balance brought forward from VanceInfo as a result of the merger   9,518  
Net income 7,837 2,590 17,901
Balance 25,634 17,797 5,689
Parent Company | Accumulated other comprehensive income
     
Increase (Decrease) in Stockholders' Equity      
Balance 18,780 16,327 10,589
Foreign currency translation adjustments 5,846 2,453 5,738
Balance $ 24,626 $ 18,780 $ 16,327