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Inventories (Details Textual)	12 Months Ended
Inventories (Details Textual)	Jun. 30, 2017 USD ($)
Inventories (Textual)
Nonmonetary transactions	$ 58,205,442

X

- References

No definition available.

+ Details

Name:	cga_InventoriesTextualAbstract
Namespace Prefix:	cga_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Nonmontary sales and purchases.

+ References

No definition available.

+ Details

Name:	cga_NonmontarySalesAndPurchases
Namespace Prefix:	cga_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration