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Significant Concentrations (Narrative) (Details) | 9 Months Ended
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Jun. 30, 2014
Significant Concentrations 1 | 10.00%
Significant Concentrations 2 | 10.00%
Significant Concentrations 3 | 10.00%
Significant Concentrations 4 | 10.00%
Significant Concentrations 5 | 10.00%

X
- Definition Significant Concentrations 4 + References No definition available. + Details
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X
- Definition Significant Concentrations 1 + References No definition available. + Details
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Data Type: | num:percentItemType
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X
- Definition Significant Concentrations 2 + References No definition available. + Details
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Data Type: | num:percentItemType
Balance Type: | na
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X
- Definition Significant Concentrations 3 + References No definition available. + Details
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Data Type: | num:percentItemType
Balance Type: | na
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X
- Definition Significant Concentrations 5 + References No definition available. + Details
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Namespace Prefix: | cbak_
Data Type: | num:percentItemType
Balance Type: | na
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