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Income Taxes (Movement of the valuation allowance) (Details)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2012
USD ($)
Dec. 31, 2012
CNY
Dec. 31, 2011
CNY
Dec. 31, 2010
CNY
Income Taxes [Abstract]        
Balance at the beginning of the period $ 120 750 1,856 2,330
Current period addition 160 993 0 863
Current period reversal 0 0 (1,106) (1,337)
Balance at the end of the period $ 280 1,743 750 1,856