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ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES (Accrued Expenses) (Details) - USD ($)
$ in Thousands
Mar. 31, 2019
Dec. 31, 2018
Payables and Accruals [Abstract]    
Accrued expenses $ 1,365 $ 1,583
Accrued compensation 187 118
Accrued interest 99 239
Accrued expenses $ 1,651 $ 1,940