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Derivative Liability (Details) - USD ($)
$ in Thousands
Jun. 30, 2019
Dec. 31, 2018
Fair Value, Option, Qualitative Disclosures Related to Election [Abstract]    
Fair value of derivative liability $ 263 $ 345
Level 3 [Member]    
Fair Value, Option, Qualitative Disclosures Related to Election [Abstract]    
Fair value of derivative liability $ 263 $ 345