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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 | 9 Months Ended
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Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2019 | Sep. 30, 2018
Allocated stock-based compensation | $ 45 | $ 52 | $ 129 | $ 143
Employee Stock Options [Member] |  |  |  |
Allocated stock-based compensation | 35 | 37 | 114 | 110
Director Stock Options [Member] |  |  |  |
Allocated stock-based compensation | $ 10 | $ 15 | $ 15 | $ 33

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