Quarterly report pursuant to Section 13 or 15(d)

Capital Stock, Stock Plans and Stock-based Compensation - Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs (Details)

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Capital Stock, Stock Plans and Stock-based Compensation - Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Allocated stock-based compensation $ 45 $ 19 $ 91 $ 41
Employee Stock Options [Member]        
Allocated stock-based compensation 37 11 73 21
Director Stock Options [Member]        
Allocated stock-based compensation $ 8 $ 8 $ 18 $ 20