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5. Stock-Based Compensation (Details Narrative) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Stock-based Compensation Details Narrative        
Stock compensation expense $ 196 $ 172 $ 800 $ 573
Unrecognized compensation expense $ 1,100   $ 1,100