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BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) | 12 Months Ended
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Jun. 30, 2012
Agricultural assets | 8 years
Minimum [Member] |
Building | 10 Years
Machinery and equipment | 5 years
Vehicles | 3 years
Maximum [Member] |
Building | 25 Years
Machinery and equipment | 15 years
Vehicles | 5 years

X
- Definition The estimated useful life of agricultural assets. + References No definition available. + Details
Name: | cga_AgriculturalAssetsUsefulLife
Namespace Prefix: | cga_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The estimated useful life of building. + References No definition available. + Details
Name: | cga_BuildingsUsefulLife
Namespace Prefix: | cga_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The estimated useful life of vehicle. + References No definition available. + Details
Name: | cga_VehiclesUsefulLife
Namespace Prefix: | cga_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. + References No definition available. + Details
Name: | us-gaap_PropertyPlantAndEquipmentUsefulLife
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration