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Prepaid Expenses (Tables)
6 Months Ended
Jun. 30, 2017
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]  
Schedule of prepaid expenses

Prepaid expenses consist of the following:

 

    June 30,
2017
    December 31,
2016
 
Director compensation   $     $ 215  
Director and officer insurance     96       70  
Legal retainer     25       25  
Rent     25       17  
Inventory Purchase Deposits     20        
Meetings/Dues     17        
Engineering, software licenses and other     9       10  
Total prepaid expenses   $ 192     $ 337