CONSOLIDATED STATEMENTS OF CASH FLOWS (Parenthetical) (Common Stock [Member])	12 Months Ended
Jun. 30, 2014	Jun. 30, 2013
Common Stock [Member]
Stock Issued Shares For Repayment Of Amount Due To Related Party	118,778	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