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SHARE-BASED EMPLOYEE REMUNERATION (Details)
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2015
USD ($)
Dec. 31, 2013
USD ($)
Dec. 31, 2016
USD ($)
Dec. 31, 2014
USD ($)
Number of shares            
Number of shares, Balance       1,130,000    
Number of shares, Granted 56,919 27,394   0    
Number of shares, Forfeited       (20,000)    
Number of shares, Exercised       0    
Number of shares, Balance       1,110,000    
Number of shares, Exercisable     1,110,000 832,500 0 1,110,000
Number of shares, Expired     (1,110,000)      
Weighted average exercise price            
Weighted average exercise price, Balance       $ 7.65    
Weighted average exercise price, Granted       0    
Weighted average exercise price, Forfeited       7.65    
Weighted average exercise price, Exercised       0    
Weighted average exercise price, Balance       7.65    
Weighted average exercise price, Exercisable     $ 7.65 $ 7.65 $ 0 $ 7.65
Weighted average exercise price, Expired     $ 7.65