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INVESTMENTS (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2016
Jun. 30, 2016
Jun. 30, 2017
Dec. 31, 2016
Schedule of Investments        
Impairment of investment $ 2,696 $ 2,696    
Jinhui        
Schedule of Investments        
Investment in the capital stock (in shares)     0 0
KLC        
Schedule of Investments        
Investment in the capital stock (in shares)     0 0