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BORROWINGS (Long-Term Borrowings) (Details)
 12 Months Ended 12 Months Ended 12 Months Ended 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2012
China Construction Bank [Member]
Facility One [Member]
USD ($)
Dec. 31, 2012
China Construction Bank [Member]
Facility One [Member]
CNY
Dec. 31, 2012
China Construction Bank [Member]
Facility Two [Member]
USD ($)
Dec. 31, 2012
China Construction Bank [Member]
Facility Two [Member]
CNY
Dec. 31, 2012
Huaxia Bank [Member]
USD ($)
Dec. 31, 2011
Huaxia Bank [Member]
USD ($)
Dec. 31, 2011
Huaxia Bank [Member]
CNY
Dec. 31, 2012
Huaxia Bank [Member]
CNY
Dec. 31, 2012
Huaxia Bank [Member]
Facility One [Member]
USD ($)
Dec. 31, 2012
Huaxia Bank [Member]
Facility One [Member]
CNY
Dec. 31, 2012
Huaxia Bank [Member]
Facility Two [Member]
USD ($)
Dec. 31, 2012
Huaxia Bank [Member]
Facility Two [Member]
CNY
Dec. 31, 2012
Bank of China [Member]
USD ($)
Dec. 31, 2012
Bank of China [Member]
CNY
Dec. 31, 2012
Chongqing Rural Commercial Bank [Member]
USD ($)
Dec. 31, 2012
Chongqing Rural Commercial Bank [Member]
CNY
Debt Instrument [Line Items]                                    
Initiation date of credit facility     Oct. 08, 2007 Oct. 08, 2007 Jan. 21, 2009 Jan. 21, 2009 Sep. 28, 2011               Sep. 30, 2011 Sep. 30, 2011 Oct. 26, 2011 Oct. 26, 2011
Term of facility     7 years 7 years 6 years 6 years 4 years               6 years 6 years 4 years 4 years
Maximum borrowing amount of credit facility     $ 63,400,000 400,000,000 $ 63,400,000 400,000,000 $ 63,400,000     400,000,000 $ 20,600,000 130,000,000 $ 39,600,000 250,000,000 $ 155,400,000 980,000,000 $ 38,900,000 245,500,000
Interest rate spread over rate issued by People's Bank of China                             5.00% 5.00% 10.00% 10.00%
Amount drawn down     63,400,000 400,000,000 63,400,000 400,000,000   60,200,000 380,000,000   20,600,000   39,600,000   120,000,000 750,000,000 38,900,000 245,500,000
Amount repaid     41,700,000 260,000,000 45,300,000 282,000,000 6,500,000                   9,100,000 60,000,000
Fixed interest rate                     6.65%   6.90%          
Amount of collateral             8,400,000     52,000,000                
Amount available for future draw down               $ 3,200,000 20,000,000           $ 36,000,000 230,000,000    
Weighted average interest rate 6.90% 6.93%