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Stock-Based Compensation (Details Narrative) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Dec. 31, 2017
Employee Stock Option [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock-based compensation expense $ 93 $ 61  
Unrecognized employee stock-based compensation expense, net of estimated forfeitures $ 1,597   $ 1,690
Weighted-average period over which unrecognized compensation is expected to be recognized 2 years 18 days   1 year 9 months 7 days
Number of options granted 500,000    
Non Employee Awards [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock-based compensation expense $ 2,083 $ 774  
Number of options granted 0