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COMMITMENTS AND CONTINGENCIES (Details 4) (USD $)	Jul. 31, 2012
2012	$ 14,085,398
2013	18,820,051
Total	$ 32,905,449

Amount of future payment for properties.

No definition available.

Name:	cbp_FuturePaymentForProperties
Namespace Prefix:	cbp_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Amount of future payment for properties in current year.

No definition available.

Name:	cbp_FuturePaymentForPropertiesInCurrentYear
Namespace Prefix:	cbp_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Amount of future payment for properties in one year.

No definition available.

Name:	cbp_FuturePaymentForPropertiesInOneYear
Namespace Prefix:	cbp_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant