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Income (Loss) Per Share (Narrative) (Details) - shares | 9 Months Ended
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Sep. 30, 2018 | Sep. 30, 2017
Vested restricted shares granted that were not yet issued | 13,338 | 166,003
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount |  | 424,666

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- Definition Vested restricted shares granted that were not yet issued + References No definition available. + Details
Name: | cbak_VestedRestrictedSharesGrantedThatWereNotYetIssued
Namespace Prefix: | cbak_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

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- Definition Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
Name: | us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration