Business Combinations (Details 1) - Variable Interest Entities [Member]	Mar. 31, 2017 USD ($)
Business Acquisition [Line Items]
Cash	$ 1,160,912
Convertible notes	1,485,800
Derivative liability	20,386
Total	$ 2,667,098

Business combination recognized identifiable assets acquired and liabilities assumed cash.

No definition available.

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Namespace Prefix:	cga_
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Balance Type:	debit
Period Type:	instant

- Definition

Business combination recognized identifiable assets acquired and liabilities assumed convertible notes.

+ References

No definition available.

+ Details

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Namespace Prefix:	cga_
Data Type:	xbrli:monetaryItemType
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Period Type:	instant

- Definition

Business combination recognized identifiable assets acquired and liabilities assumed derivative liability.

+ References

No definition available.

+ Details

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Namespace Prefix:	cga_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Business combination recognized identifiable assets acquired and liabilities assumed total.

+ References

No definition available.

+ Details

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Namespace Prefix:	cga_
Data Type:	xbrli:monetaryItemType
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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
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Balance Type:	na
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- Details

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