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Other Long-term Payables (Narrative) (Details) (USD $) | 3 Months Ended
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Dec. 31, 2012
Other Long-term Payables 1 | $ 7,500,000
Other Long-term Payables 2 | $ 8,000,000

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- Definition Other Long-term Payables 1 + References No definition available. + Details
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Namespace Prefix: | cbak_
Data Type: | xbrli:monetaryItemType
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- Definition Other Long-term Payables 2 + References No definition available. + Details
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Namespace Prefix: | cbak_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
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