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PREPAID EXPENSES AND OTHER CURRENT ASSETS (Details) - USD ($)
$ in Thousands
Dec. 31, 2019
Jan. 01, 2019
Dec. 31, 2018
PREPAID EXPENSES AND OTHER CURRENT ASSETS      
Receivable From Payment Processing Agencies Current $ 217   $ 1,386
Prepayment to suppliers 967   838
Rental deposits and prepaid rents 680   268
Deferred expense 350   686
Others 1,405   2,633
Total $ 3,619 $ 5,554 $ 5,811