CONSOLIDATED CONDENSED STATEMENTS OF CASH FLOWS (Parenthetical) (Common Stock [Member])	3 Months Ended
Sep. 30, 2013
Common Stock [Member]
Stock Issued Shares For Repayment Of Amount Due To Related Party	118,778

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