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ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES (Narrative) (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Payables and Accruals [Abstract]        
Reduction in Certain Accrued Expense and Accounts Payable   $ 0   $ 1,300
Gain on settlement of liability, net $ 0   $ 0 $ 1,251