Share-Based Compensation (Details Narrative) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
Mar. 31, 2021	Mar. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total unrecognized compensation cost related to nonvested share-based compensation arrangements granted	$ 206
Weighted-average period over which unrecognized compensation is expected to be recognized	1 year 8 months 12 days
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	$ 42	$ 52
Stock options granted	0	0
Stock options excercise	0	0
Stock options expired	35,000	241,000
Stock options forfeited	0	140,000
Stock options outstanding, end of period	3,411,000	3,332,000
Weighted average exercise price	$ 0.57	$ 0.63

Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Amount of cost to be recognized for option under share-based payment arrangement.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Number of options or other stock instruments for which the right to exercise has lapsed under the terms of the plan agreements.

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The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan.

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Gross number of share options (or share units) granted during the period.

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Number of non-vested options outstanding.

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Number of share options (or share units) exercised during the current period.

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Amount of noncash expense for option under share-based payment arrangement.

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