Represents the percentage of statuary surplus reserve.

No definition available.

Name:	caas_PercentageOfStatutorySurplusReserve
Namespace Prefix:	caas_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The amount of statutory capital and surplus reserve (stockholders' equity) during the reporting period using prescribed or permitted statutory accounting practices.

+ References

No definition available.

+ Details

Name:	caas_StatutoryAccountingPracticesStatutoryCapitalAndSurplusReserve
Namespace Prefix:	caas_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

This element represents the statutory accounting practices statutory surplus required percentage during the reporting period.

+ References

No definition available.

+ Details

Name:	caas_StatutoryAccountingPracticesStatutorySurplusRequiredPercentage
Namespace Prefix:	caas_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Aggregate dividends declared during the period for each share of common stock outstanding.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Article 3

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.3-04)

-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

+ Details

Name:	us-gaap_CommonStockDividendsPerShareDeclared
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_RetainedEarningsAdjustmentsLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of statutory capital required to be maintained as of the balance sheet date under prescribed or permitted statutory accounting practices.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 505

-Section 50

-Paragraph 1

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6486098&loc=d3e24708-158529

+ Details

Name:	us-gaap_StatutoryAccountingPracticesStatutoryCapitalAndSurplusRequired
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Retained Earnings (Details Textual) In Millions, except Per Share data, unless otherwise specified	1 Months Ended	12 Months Ended
	May 27, 2014 USD ($)	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)	Dec. 31, 2014 Jingzhou Henglong Automotive Parts Co Ltd [Member] USD ($)	Dec. 31, 2014 Shashi Jiulong Power Steering Gears Co Ltd [Member] USD ($)	Dec. 31, 2014 Shashi Jiulong Power Steering Gears Co Ltd [Member] CNY	Dec. 31, 2014 Shenyang Jinbei Henglong Automotive Steering System Co Ltd [Member] USD ($)	Dec. 31, 2014 Shenyang Jinbei Henglong Automotive Steering System Co Ltd [Member] CNY	Dec. 31, 2014 Universal Sensor Application Inc [Member] USD ($)	Dec. 31, 2014 Wuhan Jielong Electric Power Steering Co Ltd [Member] USD ($)	Dec. 31, 2014 Wuhu Henglong Auto Steering System Co Ltd [Member] USD ($)	Dec. 31, 2014 Wuhu Henglong Auto Steering System Co Ltd [Member] CNY	Dec. 31, 2014 Hubei Henglong Automotive System Group Co Ltd [Member] USD ($)	Dec. 31, 2014 Chongqing Henglong Hongyan Automotive Systems Co Ltd [Member] USD ($)	Dec. 31, 2014 Chongqing Henglong Hongyan Automotive Systems Co Ltd [Member] CNY
Retained Earnings Adjustments [Line Items]
Statutory Accounting Practices Statutory Surplus Required Percentage		10.00%
Statutory Accounting Practices, Statutory Capital and Surplus Required				$ 10.0	$ 4.2	35.0	$ 8.1	67.5	$ 2.6	$ 6.0	$ 3.8	30.0	$ 39.0	$ 9.5	60.0
Percentage Of Statutory Surplus Reserve		50.00%
Statutory Accounting Practices Statutory Capital And Surplus Reserve		$ 0.1	$ 0.1
Common Stock, Dividends, Per Share, Declared	$ 0.18