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SHARE-BASED EMPLOYEE REMUNERATION (Details Textual)
1 Months Ended 12 Months Ended
Jan. 27, 2011
USD ($)
Dec. 31, 2018
CNY (¥)
Dec. 31, 2017
CNY (¥)
Dec. 31, 2016
CNY (¥)
Dec. 31, 2013
USD ($)
Dec. 31, 2018
USD ($)
Dec. 31, 2017
USD ($)
Disclosure Of SHARE-BASED EMPLOYEE REMUNERATION [Line Items]              
Number of share options granted in share-based payment arrangement   56,919 27,394   0    
Weighted average exercise price of share options granted in share-based payment arrangement | $         $ 0    
Fair value of share options granted   ¥ 619,000 ¥ 294,000 ¥ 0   $ 56,919 $ 27,394
Employee benefits expense | ¥   42,246,000 ¥ 68,025,000 ¥ 62,075,000      
Incentive compensation plan 2010 [Member]              
Disclosure Of SHARE-BASED EMPLOYEE REMUNERATION [Line Items]              
Number of share options granted in share-based payment arrangement 1,130,000            
Weighted average exercise price of share options granted in share-based payment arrangement | $ $ 7.65            
Fair value of share options granted | ¥   ¥ 25,643,000          
Contractual Life Of Outstanding Share Options 5 years            
Equity Compensation Plan 2017 [Member]              
Disclosure Of SHARE-BASED EMPLOYEE REMUNERATION [Line Items]              
Number of share options granted in share-based payment arrangement   280,000