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INCOME TAXES (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Dec. 31, 2017
INCOME TAXES [Abstract]          
One-time benefit of deferred tax asset $ (1,440)   $ (757) $ 0  
Income Taxes [Abstract]          
Statutory U.S federal income tax rate     21.00%   35.00%
Income tax (benefit) expense (328) $ 461 $ 667 $ 647  
Unrecognized tax benefits 44   44    
Interest or penalties $ 0   $ 0    
Minimum [Member]          
Income Taxes [Abstract]          
Statutory Chinese income tax rate     15.00%    
Maximum [Member]          
Income Taxes [Abstract]          
Statutory Chinese income tax rate     25.00%