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Commitments and Contingencies (Narrative) (Details) (USD $)	3 Months Ended
	Dec. 31, 2014
Commitments And Contingencies 1	$ 553,774cbak_CommitmentsAndContingenciesZeroTwoSixEightNineThreeOneSevenNineMgzHknMQfRnR
Commitments And Contingencies 2	553,774cbak_CommitmentsAndContingenciesZeroTwoSixEightNineThreeOneSevenNineXQSNineFourSVqSevenwZeroB
Commitments And Contingencies 3	$ 7,550cbak_CommitmentsAndContingenciesZeroTwoSixEightNineThreeOneSevenNinesggSevendVrSevenGMkq

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