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Note payable (Details Narrative) - USD ($)
$ in Thousands
Apr. 07, 2015
Sep. 30, 2018
Dec. 31, 2017
Dec. 31, 2016
Notes payable (including current and noncurrent)     $ 459  
Notes payable, noncurrent   $ 450 $ 454
Interest Contribution Agreement [Member] | Installment Note [Member] | George Zambelli [Member]        
Principal amount $ 470      
Interest rate on note 8.00%      
Frequency of periodic payment Monthly basis from the Initial Closing.