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Long-term Investments (Details 1) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Debt Instrument [Line Items]    
Net Sales $ 466,773us-gaap_SalesRevenueGoodsNet $ 415,158us-gaap_SalesRevenueGoodsNet
Gross Margin 87,474us-gaap_GrossProfit 76,632us-gaap_GrossProfit
Net Income(Loss) 33,542us-gaap_NetIncomeLoss 26,789us-gaap_NetIncomeLoss
Beijing Henglong [Member]    
Debt Instrument [Line Items]    
Net Sales 38,210us-gaap_SalesRevenueGoodsNet
/ dei_LegalEntityAxis
= caas_BeijingHenglongMember		 28,046us-gaap_SalesRevenueGoodsNet
/ dei_LegalEntityAxis
= caas_BeijingHenglongMember
Gross Margin 1,100us-gaap_GrossProfit
/ dei_LegalEntityAxis
= caas_BeijingHenglongMember		 869us-gaap_GrossProfit
/ dei_LegalEntityAxis
= caas_BeijingHenglongMember
Net Income(Loss) $ 520us-gaap_NetIncomeLoss
/ dei_LegalEntityAxis
= caas_BeijingHenglongMember		 $ 482us-gaap_NetIncomeLoss
/ dei_LegalEntityAxis
= caas_BeijingHenglongMember