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STOCKHOLDERS' EQUITY (Details Textual) (USD $) | 1 Months Ended | 6 Months Ended | 12 Months Ended | 3 Months Ended | 1 Months Ended | 6 Months Ended
--- | --- | --- | --- | --- | --- | ---
Sep. 30, 2014 | Sep. 28, 2013 | Dec. 31, 2014 | Jun. 30, 2014 | Sep. 30, 2014 | Sep. 26, 2013 | Dec. 31, 2013
Stockholders Equity [Line Items] |  |  |  |  |  |  |
Preferred Stock, Shares Authorized | 20,000,000 us-gaap_PreferredStockSharesAuthorized |  | 20,000,000 us-gaap_PreferredStockSharesAuthorized | 20,000,000 us-gaap_PreferredStockSharesAuthorized | 20,000,000 us-gaap_PreferredStockSharesAuthorized |  |
Preferred Stock, Par or Stated Value Per Share (in dollars per share) | $ 0.001 us-gaap_PreferredStockParOrStatedValuePerShare |  | $ 0.001 us-gaap_PreferredStockParOrStatedValuePerShare | $ 0.001 us-gaap_PreferredStockParOrStatedValuePerShare | 0.001 us-gaap_PreferredStockParOrStatedValuePerShare |  |
Stock Issued During Period, Shares, Employee Stock Purchase Plans |  |  | 552,495 us-gaap_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans |  |  |  |
Stock Issued During Period, Value, Restricted Stock Award, Gross | $ 3,675,000 us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardGross | $ 7,490,000 us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardGross |  |  |  |  |
Dividends Payable, Amount Per Share |  |  | $ 0.10 us-gaap_DividendsPayableAmountPerShare |  |  |  |
Dividends Payable |  |  | 3,296,156 us-gaap_DividendsPayableCurrentAndNoncurrent |  |  |  |
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Share-based Awards Other than Options |  |  | 2,403,958 us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions |  |  |  |
Common Stock [Member] |  |  |  |  |  |  |
Stockholders Equity [Line Items] |  |  |  |  |  |  |
Stock Issued During Period, Shares, Issued for Services |  |  | 67,310 us-gaap_StockIssuedDuringPeriodSharesIssuedForServices / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 17,356 us-gaap_StockIssuedDuringPeriodSharesIssuedForServices / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |  |
Stock Issued During Period, Value, Issued for Services |  |  | 137,075 us-gaap_StockIssuedDuringPeriodValueIssuedForServices / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 65,535 us-gaap_StockIssuedDuringPeriodValueIssuedForServices / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |  |
Stock Issued During Period, Value, Employee Stock Purchase Plan |  |  | 1,246,746 us-gaap_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |  |  |
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Share-based Awards Other than Options |  |  | 1,305,931 us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |  |  |
Equity Incentive Plan 2009 [Member] |  |  |  |  |  |  |
Stockholders Equity [Line Items] |  |  |  |  |  |  |
Stock Issued During Period, Shares, Restricted Stock Award, Gross |  | 1,750,000 us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardGross / us-gaap_PlanNameAxis = cga_EquityIncentivePlan2009Member |  |  | 1,750,000 us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardGross / us-gaap_PlanNameAxis = cga_EquityIncentivePlan2009Member |  |
Mr Tao Li [Member] |  |  |  |  |  |  |
Stockholders Equity [Line Items] |  |  |  |  |  |  |
Stock Issued During Period, Value, Employee Stock Purchase Plan |  |  |  |  |  | 200,000 us-gaap_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan / us-gaap_TitleOfIndividualAxis = cga_MrTaoLiMember |
Officers' Compensation |  |  |  |  |  | 325,000 us-gaap_OfficersCompensation / us-gaap_TitleOfIndividualAxis = cga_MrTaoLiMember |
Mr Tao Li [Member] | Common Stock [Member] |  |  |  |  |  |  |
Stockholders Equity [Line Items] |  |  |  |  |  |  |
Equity Issuance, Per Share Amount |  |  |  |  |  | $ 4.42 us-gaap_EquityIssuancePerShareAmount / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember / us-gaap_TitleOfIndividualAxis = cga_MrTaoLiMember |
Stock Issued During Period, Shares, Share-based Compensation, Gross |  |  |  |  |  |  | 118,778 us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensationGross / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember / us-gaap_TitleOfIndividualAxis = cga_MrTaoLiMember
Mr Tao Li [Member] | Equity Incentive Plan 2009 [Member] |  |  |  |  |  |  |
Stockholders Equity [Line Items] |  |  |  |  |  |  |
Stock Issued During Period, Shares, Restricted Stock Award, Gross |  | 480,000 us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardGross / us-gaap_PlanNameAxis = cga_EquityIncentivePlan2009Member / us-gaap_TitleOfIndividualAxis = cga_MrTaoLiMember |  |  | 240,000 us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardGross / us-gaap_PlanNameAxis = cga_EquityIncentivePlan2009Member / us-gaap_TitleOfIndividualAxis = cga_MrTaoLiMember |  |
Mr Ken Ren [Member] | Equity Incentive Plan 2009 [Member] |  |  |  |  |  |  |
Stockholders Equity [Line Items] |  |  |  |  |  |  |
Stock Issued During Period, Shares, Restricted Stock Award, Gross |  | 200,000 us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardGross / us-gaap_PlanNameAxis = cga_EquityIncentivePlan2009Member / us-gaap_TitleOfIndividualAxis = cga_MrKenRenMember |  |  | 100,000 us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardGross / us-gaap_PlanNameAxis = cga_EquityIncentivePlan2009Member / us-gaap_TitleOfIndividualAxis = cga_MrKenRenMember |  |
Mr Yizhao Zhang [Member] |  |  |  |  |  |  |
Stockholders Equity [Line Items] |  |  |  |  |  |  |
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures |  | 40,000 us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures / us-gaap_TitleOfIndividualAxis = cga_MrYizhaoZhangMember |  |  | 40,000 us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures / us-gaap_TitleOfIndividualAxis = cga_MrYizhaoZhangMember |  |
Ms Yiru Shi [Member] |  |  |  |  |  |  |
Stockholders Equity [Line Items] |  |  |  |  |  |  |
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures |  | 30,000 us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures / us-gaap_TitleOfIndividualAxis = cga_MsYiruShiMember |  |  | 30,000 us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures / us-gaap_TitleOfIndividualAxis = cga_MsYiruShiMember |  |
Mr Lianfu Liu [Member] |  |  |  |  |  |  |
Stockholders Equity [Line Items] |  |  |  |  |  |  |
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures |  | 20,000 us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures / us-gaap_TitleOfIndividualAxis = cga_MrLianfuLiuMember |  |  | 20,000 us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures / us-gaap_TitleOfIndividualAxis = cga_MrLianfuLiuMember |  |
Other Employees [Member] |  |  |  |  |  |  |
Stockholders Equity [Line Items] |  |  |  |  |  |  |
Stock Issued During Period, Shares, Restricted Stock Award, Gross |  |  |  |  | 1,320,000 us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardGross / us-gaap_TitleOfIndividualAxis = cga_OtherEmployeesMember |  |
Two Twenty Employees [Member] |  |  |  |  |  |  |
Stockholders Equity [Line Items] |  |  |  |  |  |  |
Stock Issued During Period, Shares, Restricted Stock Award, Gross |  | 980,000 us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardGross / us-gaap_TitleOfIndividualAxis = cga_TwoTwentyEmployeesMember |  |  |  |  |
Restricted Stock [Member] |  |  |  |  |  |  |
Stockholders Equity [Line Items] |  |  |  |  |  |  |
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Share-based Awards Other than Options |  |  | $ 3,709,889 us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember |  |  |  |

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