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Capital Stock, Stock Plans and Stock Based Compensation (Details Narrative) - USD ($) $ / shares in Units, $ in Thousands |  |  |  | 1 Months Ended | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Jan. 17, 2019 | Jan. 18, 2018 | Jul. 27, 2017 | May 31, 2018 | Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2019 | Jun. 30, 2018 | Dec. 31, 2018 | Dec. 31, 2017 | [1]
Number of stock option shares granted |  |  |  |  |  |  |  |  | 105,000 |  | 6,000 |  |  |
Stock options, grants in period, exercise price |  |  |  |  |  |  |  |  | $ 3.15 |  | $ 4.05 |  |  |
Number of options exercised |  |  |  |  |  |  |  |  |  |  | 10,000 |  |  |
Remaining stock option |  |  |  |  | 708,000 | [1] | 620,800 | [1] | 708,000 | [1] | 620,800 | [1] | 616,000 | 624,800
Allocated share-based compensation expense |  |  |  |  | $ 36 |  | $ 45 |  | $ 84 |  | $ 91 |  |  |
Employee Stock Options [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Allocated share-based compensation expense |  |  |  |  | 36 |  | $ 37 |  | 79 |  | $ 73 |  |  |
Robert Ferguson [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of options exercised |  |  |  | 10,000 |  |  |  |  |  |  |  |  |  |
Unrecognized compensation cost related to unvested options |  |  |  |  | $ 148 |  |  |  | $ 148 |  |  |  |  |
Remaining stock option |  |  |  |  | 90,000 |  |  |  | 90,000 |  |  |  |  |
Employee and Directors [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unrecognized compensation cost related to unvested options |  |  |  |  | $ 476 |  |  |  | $ 476 |  |  |  |  |
Employee and director service share-based compensation nonvested awards, compensation not yet recognized, stock options, remaining of fiscal years |  |  |  |  | 69 |  |  |  | 69 |  |  |  |  |
Employee and director service share-based compensation nonvested awards, compensation not yet recognized, stock options, year two |  |  |  |  | 139 |  |  |  | 139 |  |  |  |  |
Employee and director service share-based compensation nonvested awards, compensation not yet recognized, stock options, year three |  |  |  |  | 139 |  |  |  | 139 |  |  |  |  |
Employee and director service share-based compensation nonvested awards, compensation not yet recognized, stock options, year four |  |  |  |  | 100 |  |  |  | 100 |  |  |  |  |
Employee and director service share-based compensation nonvested awards, compensation not yet recognized, stock options, year five |  |  |  |  | 28 |  |  |  | 28 |  |  |  |  |
Employee and director service share-based compensation nonvested awards, compensation not yet recognized, stock options, year six |  |  |  |  | $ 1 |  |  |  | $ 1 |  |  |  |  |
2017 Stock Option Plan [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of stock option shares granted | 105,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Stock options granted contractual term | 6 years |  |  |  |  |  |  |  |  |  |  |  |  |
Stock options, grants in period, exercise price | $ 3.15 |  |  |  |  |  |  |  |  |  |  |  |  |
2017 Stock Option Plan [Member] | One-Fifth Vesting [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock options granted vesting period | 5 years |  |  |  |  |  |  |  |  |  |  |  |  |
2017 Stock Option Plan [Member] | CEO [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of stock option shares granted | 25,000 |  |  |  |  |  |  |  |  |  |  |  |  |
2017 Stock Option Plan [Member] | CFO [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of stock option shares granted | 15,000 |  |  |  |  |  |  |  |  |  |  |  |  |
2017 Stock Option Plan [Member] | EVP of Strategic Initiatives [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of stock option shares granted | 15,000 |  |  |  |  |  |  |  |  |  |  |  |  |
2017 Stock Option Plan [Member] | Consultant [Member] | Employee Stock Options [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of stock option shares granted |  |  | 100,000 |  |  |  |  |  |  |  |  |  |  |
2003 Outside Directors Stock Plan [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock issued during period, shares, issued for services |  |  |  |  |  |  |  |  | 42,866 |  |  |  |  |
Allocated share-based compensation expense |  |  |  |  |  |  |  |  | $ 123 |  |  |  |  |
2003 Outside Directors Stock Plan [Member] | New Director [Member] | Non-qualified Stock Options [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of stock option shares granted |  | 6,000 |  |  |  |  |  |  |  |  |  |  |  |
Stock options granted contractual term |  | 10 years |  |  |  |  |  |  |  |  |  |  |  |
Stock options granted vesting period |  | 6 months |  |  |  |  |  |  |  |  |  |  |  |
Stock options, grants in period, exercise price |  | $ 4.05 |  |  |  |  |  |  |  |  |  |  |  |
[1] | Options with exercise prices ranging from $2.79 to $13.35

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