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 | |
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Mar. 31, 2018 |
Mar. 31, 2017 |
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| Allocated stock-based compensation | $ 46 | $ 23 |
| Employee Stock Options [Member] | ||
| Allocated stock-based compensation | 10 | 11 |
| Director Stock Options [Member] | ||
| Allocated stock-based compensation | $ 36 | $ 12 |
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- Definition Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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