STATUTORY RESERVES (Details) (PRC, USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Statutory reserves      
Restricted portion of net assets, including paid-up capital and statutory reserves of PRC subsidiaries $ 503,912 $ 475,004  
Appropriation to statutory reserve $ 833 $ 1,005 $ 333
WOFE
     
Statutory reserves      
Statutory reserve as a percentage of registered capital up to which after-tax profit of PRC subsidiaries shall be transferred to statutory reserve 50.00%    
WOFE | Minimum
     
Statutory reserves      
Appropriation of annual after-tax profit to general reserve fund (as a percent) 10.00%    
Wangkeng
     
Statutory reserves      
Appropriation of annual after-tax profit to general reserve fund (as a percent) 10.00%    
Shapulong
     
Statutory reserves      
Appropriation of annual after-tax profit to general reserve fund (as a percent) 10.00%    
Wuyue
     
Statutory reserves      
Appropriation of annual after-tax profit to general reserve fund (as a percent) 10.00%    
Ruiyang
     
Statutory reserves      
Appropriation of annual after-tax profit to general reserve fund (as a percent) 10.00%    
Husahe
     
Statutory reserves      
Appropriation of annual after-tax profit to general reserve fund (as a percent) 10.00%    
Jinlong
     
Statutory reserves      
Appropriation of annual after-tax profit to general reserve fund (as a percent) 10.00%    
Jintang
     
Statutory reserves      
Appropriation of annual after-tax profit to general reserve fund (as a percent) 10.00%    
Jinwei
     
Statutory reserves      
Appropriation of annual after-tax profit to general reserve fund (as a percent) 10.00%    
Dazhaihe
     
Statutory reserves      
Appropriation of annual after-tax profit to general reserve fund (as a percent) 10.00%