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OTHER CURRENT LIABILITIES (Details) - USD ($)
$ in Thousands
Sep. 30, 2019
Jan. 01, 2019
Dec. 31, 2018
Other Liabilities, Current [Abstract]      
Accrued legal $ 1,453   $ 1,827
Lease liabilities - current 1,161 $ 1,157 0
Income taxes payable 228   204
Other current liabilities 1,360   1,163
Total other current liabilities $ 4,202   $ 3,194