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Equipment and Leasehold Improvements (Details Narrative) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Property, Plant and Equipment [Abstract]      
Depreciation, Depletion and Amortization, Total $ 3,800 $ 3,700 $ 3,300