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PREPAID EXPENSE AND OTHER CURRENT ASSETS (Details) - USD ($)
$ in Thousands
Mar. 31, 2020
Dec. 31, 2019
Prepaid Expense and Other Current Assets    
Other receivables $ 3,679 $ 3,712
Prepaid expense 649 633
Deposits 12 7
Other current assets 277 271
Total $ 4,617 $ 4,623