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INCOME TAXES (Details 1) - USD ($)
$ in Thousands
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Income Taxes Details 1      
Tax loss carry forward $ 4,179 $ 4,130 $ 4,079
Patents capitalized and amortized for tax purposes 10 16 21
Unrecognized deferred tax assets $ 4,189 $ 4,146 $ 4,100