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Shareholders Equity and Capital Stock (Details Narrative) - USD ($) $ / shares in Units, $ in Thousands |  | 1 Months Ended | 12 Months Ended
--- | --- | --- | ---
Aug. 04, 2020 | Aug. 31, 2020 | Sep. 30, 2018 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Public offering price per share | $ 0.52 |  | $ 0.82 |  |  |
Warrants issued to purchase common shares |  | 9,000,000 | 13,062,878 |  |  |
Common shares purchase |  | 4,500,000 | 6,531,439 |  |  |
Number of options, Outstanding |  |  |  | 11,610,424,000 |  |
Number of options, Exercisable |  |  |  | 6,245,496,000 |  |
Share based compensation expense |  |  |  | $ 1,000 | $ 800 | $ 900
Shares issued upon public offering |  |  | 12,195,122 |  |  |
Common shares par value |  | $ 0.75 | $ 1.00 |  |  |
Options granted |  |  | 1,829,268 |  |  |
Direct offering closed | $ 4,680 |  |  |  |  |
Gross proceeds with warrants | 4,680 |  |  |  |  |
Fees and expenses | 400 |  |  |  |  |
Net proceeds from offerings | $ 4,300 |  |  |  |  |
Exercise price | $ 0.75 |  |  |  |  |
Employee Service Share-based Compensation Period for Recognition |  |  |  | 1 year 4 months 24 days |  |
Series A Preferred Stock [Member] |  |  |  |  |  |
Preferred shares issued |  |  |  | 170,253,752 | 160,478,059 |
Preferred stock outstanding |  |  |  | 170,253,752 | 160,478,059 |
First Anniversary [Member] |  |  |  |  |  |
Share-Based Compensation Arrangement By Share-Based Payment Award, Award Vesting Percentage |  |  |  | 33.30% |  |
Second Anniversary [Member] |  |  |  |  |  |
Share-Based Compensation Arrangement By Share-Based Payment Award, Award Vesting Percentage |  |  |  | 33.30% |  |
Third Anniversary [Member] |  |  |  |  |  |
Share-Based Compensation Arrangement By Share-Based Payment Award, Award Vesting Percentage |  |  |  | 33.40% |  |
Stock Option Plan [Member] |  |  |  |  |  |
Employee Service Share-based Compensation Period for Recognition |  |  |  | 3 years |  |
Employee Service Share-based Compensation Share-based Awards Other than Options |  |  |  | $ 1,100 |  |
Restricted Stock Units RSU [Member] |  |  |  |  |  |
Employee Service Share-based Compensation Period for Recognition |  |  |  | 1 year 4 months 24 days |  |
Employee Service Share-based Compensation Share-based Awards Other than Options |  |  |  | $ 500 |  |
Restricted Stock Units RSU One [Member] |  |  |  |  |  |
Options granted |  |  |  | 159,982 | 323,618 | 496,838
Employee Service Share-based Compensation Period for Recognition |  |  |  | 3 years |  |
Commonn shares exchange for vested RSUs |  |  |  | 356,071 | 425,038 | 505,510
Proceeds from options exercised |  |  |  | $ 100 | $ 200 | $ 300
Warrants [Member] |  |  |  |  |  |
Warrants issued to purchase common shares |  |  | 6,097,561 |  |  |
Warrants One [Member] |  |  |  |  |  |
Warrants issued to purchase common shares |  | 9,000,000 | 13,062,878 |  |  |
Common shares purchase |  | 4,500,000 | 6,531,439 |  |  |
Warrants Three [Member] |  |  |  |  |  |
Warrants issued to purchase common shares |  |  | 867,756 |  |  |
Common shares purchase |  |  | 433,878 |  |  |
Warrants Two [Member] |  |  |  |  |  |
Warrants issued to purchase common shares |  |  | 914,634 |  |  |

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