Effective lease date.

No definition available.

Name:	cga_EffectiveLeaseDate
Namespace Prefix:	cga_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

The term of effective lease.

+ References

No definition available.

+ Details

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- Definition

Amount of monthly rent expense incurred for leased assets, including but not limited to, furniture and equipment, that is not directly or indirectly associated with the manufacture, sale or creation of a product or product line.

+ References

No definition available.

+ Details

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Namespace Prefix:	cga_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Area of land held.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	num:areaItemType
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- Definition

The aggregate amount of receivables to be collected from related parties where one party can exercise control or significant influence over another party; including affiliates, owners or officers and their immediate families, pension trusts, and so forth, at the financial statement date. which are usually due within one year (or one business cycle).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(k)(1))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(11))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(3)(a)(2))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section 45
-Paragraph 1
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=82887183&loc=d3e6676-107765

Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 850
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Carrying amount as of the balance sheet date of obligations due all related parties. For classified balance sheets, represents the current portion of such liabilities (due within one year or within the normal operating cycle if longer).

+ References

+ Details

Name:	us-gaap_DueToRelatedPartiesCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Area of land subject to a ground lease.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	num:areaItemType
Balance Type:	na
Period Type:	instant

- 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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Balance Type:	na
Period Type:	duration

- Definition

Purchases during the period (excluding transactions that are eliminated in consolidated or combined financial statements) with related party.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
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Period Type:	duration

- Details

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- Details

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- Details

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- Details

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Namespace Prefix:
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- Details

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Namespace Prefix:
Data Type:	na
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Period Type:

- Details

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Namespace Prefix:
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- Details

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Related Parties Transactions (Details)		1 Months Ended			6 Months Ended
Related Parties Transactions (Details)	Jul. 02, 2018 CNY (¥)	Jun. 29, 2018 USD ($) ft²	Dec. 31, 2015 USD ($)	Dec. 31, 2015 CNY (¥)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Jun. 30, 2018 USD ($)
Operating Leased Assets [Line Items]
Amount due to related parties					$ 3,640,504		$ 3,271,619
Amount due from related parties					0		235,551
Kingtone Information Technology Co., Ltd. [Member]
Operating Leased Assets [Line Items]
Ground lease \| ft²		612
Area of land \| ft²		6,558
Monthly rental expenses		$ 3,559
Effective lease term		4 years
Effective lease date		Jul. 01, 2018
Kingtone Information Technology Co., Ltd. [Member] \| RMB [Member]
Operating Leased Assets [Line Items]
Monthly rental expenses \| ¥	¥ 24,480
Yuxing [Member]
Operating Leased Assets [Line Items]
Amount due from related parties					0		235,551
Sale of products					198,115	$ 181,201
Gufeng [Member] \| Xi'an Techteam Science & Technology Industry (Group) Co. Ltd. [Member]
Operating Leased Assets [Line Items]
Amount due to related parties					1,017,800		1,057,000
Jinong [Member]
Operating Leased Assets [Line Items]
Amount due to related parties					$ 402,234		$ 393,565
Sales Agreement [Member]
Operating Leased Assets [Line Items]
Sale of products			$ 3,707,700
Sales Agreement [Member] \| RMB [Member]
Operating Leased Assets [Line Items]
Sale of products \| ¥				¥ 25,500,000