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Lease Prepayments, Net (Tables) | 12 Months Ended
--- | ---
Sep. 30, 2012
SCHEDULE OF LEASE PREPAYMENTS [Table Text Block] |
|  |  | 2011 |  |  | 2012 |
| Lease prepayments | $ | 36,406,288 |  | $ | 36,977,372 |
| Accumulated amortization |  | (3,675,581 | ) |  | (4,473,511 | )
|  | $ | 32,730,707 |  | $ | 32,503,861 |

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- Definition SCHEDULE OF LEASE PREPAYMENTS + References No definition available. + Details
Name: | cbak_ScheduleOfLeasePrepaymentsTableTextBlock
Namespace Prefix: | cbak_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration