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Summary of Significant Accounting Policies (Details Narrative) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Cash and cash equivalents $ 299 $ 1,412 $ 2,408
Income tax federal statutory rate 35.00%    
Accounts receivable $ 235 $ 24  
Antidilutive securities excluded from computation of earnings per share 22,054,910 9,373,286  
Reduction Rate [Member]      
Income tax federal statutory rate 21.00%    
Patent and Trademark Rights [Member]      
Estimated useful lives of patent and trademark rights   17 years  
Minimum [Member]      
Estimated useful life 3 years    
Maximum [Member]      
Estimated useful life 39 years