RESTRICTED NET ASSETS (Details) (CNY)	12 Months Ended			12 Months Ended
Dec. 31, 2011	Dec. 31, 2012	Dec. 31, 2010	Dec. 31, 2012 Minimum [Member]
Restructuring Cost and Reserve [Line Items]
Percentage of after tax profits allocated to general reserve fund				10.00%
Percentage of registered capital reached to discontinue allocation to general reserve fund	50.00%
General reserve fund	14,606,426	15,408,707	6,721,199
Restricted net assets	308,185,442	353,457,099

Amount of restricted net assets of consolidated and unconsolidated subsidiaries as of the end of the most recently completed fiscal year.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.4-08.(e)(3)(ii))

-URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 08

-Paragraph e

-Subparagraph 3

-Article 4

Name:	us-gaap_AmountOfRestrictedNetAssetsForConsolidatedAndUnconsolidatedSubsidiaries
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant