CONSOLIDATED CONDENSED STATEMENTS OF CASH FLOWS (Parenthetical)	9 Months Ended
Mar. 31, 2013
Stock issued for repayment of amount due to related party	151,515

Number of common stock issued for repayment of amount due to related party in noncash financing activities.

No definition available.

Name:	cga_StockIssuedSharesForRepaymentOfAmountDueToRelatedParty
Namespace Prefix:	cga_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration