The estimated forfeiture rate to be paid to holders of the underlying shares over the option's term.

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- Definition

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
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Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

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-Name Accounting Standards Codification
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Amount of additional cost recognized for award under share-based payment arrangement from occurrence of event accelerating recognition of cost.

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The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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

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No definition available.

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Number of options outstanding, including both vested and non-vested options.

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Weighted average grant-date fair value of non-vested options outstanding.

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Note 13 - Stock Compensation Plan (Details Textual) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Jan. 27, 2015	Apr. 04, 2002
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number, Ending Balance	19,341,112	28,831,170	34,434,994
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross	0	9,127,175
Share-based Payment Arrangement, Expense	$ 535	$ 924
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total	$ 559	$ 1,278
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Forfeiture Rates Minimum		23.43%
Share-based Compensation Arrangement by Share-based Payment Award, Option, Nonvested, Weighted Average Exercise Price, Ending Balance	$ 0.13	$ 0.14
Share-based Payment Arrangement, Accelerated Cost	$ 0	$ 66
Equity Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant					10,000,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number, Ending Balance	69,000
Equity Incentive Plan 2012 [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant	30,000,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number, Ending Balance	6,930,445
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross	0
Equity Incentive Plan 2015 [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant				40,000,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number, Ending Balance	12,341,667
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross	0