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CONCENTRATIONS AND LITIGIATION (Details Textual) (USD $) In Millions, unless otherwise specified |  | 9 Months Ended
--- | --- | ---
Mar. 07, 2013 | Mar. 31, 2013 Supplier Concentration Risk [Member] Vendor 1 [Member] | Mar. 31, 2012 Supplier Concentration Risk [Member] Vendor 1 [Member] | Mar. 31, 2013 Customer Concentration Risk [Member] Sinoagri Holding Company Limited [Member] | Mar. 31, 2012 Customer Concentration Risk [Member] Sinoagri Holding Company Limited [Member]
Percentage of Vendor from Purchased by Company |  | 10.00% | 10.00% |  |
Entity-Wide Revenue, Major Customer, Percentage |  |  |  | 10.00% | 10.00%
Payment Made To Mediation For Release Of Claims | $ 2.5 |  |  |  |

X
- Definition Payment made to mediation for release of claims. + References No definition available. + Details
Name: | cga_PaymentMadeToMediationForReleaseOfClaims
Namespace Prefix: | cga_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Percentage of vendor from purchased by company during the period. + References No definition available. + Details
Name: | cga_PercentageOfVendorFromPurchasedByCompany
Namespace Prefix: | cga_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage of revenue generated from a single external customer that accounts for 10 percent or more of an entity's revenues. + References No definition available. + Details
Name: | us-gaap_EntityWideRevenueMajorCustomerPercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration