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Receivables from Former Subsidiaries (Narrative) (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended
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Dec. 31, 2014
Receivables From Former Subsidiaries 1 | $ 1.8 cbak_ReceivablesFromFormerSubsidiariesZeroTwoSixEightNineThreeOneSevenNineZeropbEightPlnQXmwZ

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- Definition Receivables From Former Subsidiaries 1 + References No definition available. + Details
Name: | cbak_ReceivablesFromFormerSubsidiariesZeroTwoSixEightNineThreeOneSevenNineZeropbEightPlnQXmwZ
Namespace Prefix: | cbak_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration