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Accrued Liabilities - Summary of Accrued Liabilities (Details) (10-K) - USD ($)
$ in Thousands
Sep. 30, 2018
Dec. 31, 2017
Dec. 31, 2016
Payables and Accruals [Abstract]      
Employees   $ 64 $ 102
Government institution   56 24
Other current liabilities   330 145
Total Accrued Liabilities $ 363 $ 450 $ 271