Represents the aggregate number of stock options that have been issued under the stock option plan.

No definition available.

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- Definition

Represents the number of separate equity incentive programs of the entity.

+ References

No definition available.

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- Definition

Represents the number of stock-based compensation plans of the entity.

+ References

No definition available.

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- Definition

Represents the options exercisable period two.

+ References

No definition available.

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- Definition

Represents the options exercisable period three.

+ References

No definition available.

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- Definition

Represents the exercise price expressed as a percentage of the fair market value of common stock in case of optionees holding more than specified percent of voting stock of the entity.

+ References

No definition available.

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- Definition

Represents the option that will be granted to purchase shares of common stock on the date of each annual stockholders meeting, provided he or she has served as a non-employee Board member for at least six months for the entity.

+ References

No definition available.

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- Definition

The aggregate number of shares under options that have been cancelled under the stock option plan as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan.

+ References

No definition available.

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- Definition

Aggregate number of share options (or share units) granted under the stock option plan.

+ References

No definition available.

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- Definition

Represents the number of share options of common stock that will be granted under the stock based compensation plan upon initial election or appointment to the Board, provided that individual has not previously been employed by the entity in the preceding six months.

+ References

No definition available.

+ Details

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- Definition

Represents the preceding period within which an individual should not be previously employed by the entity to receive an option grant for shares of common stock upon initial election or appointment to the Board.

+ References

No definition available.

+ Details

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- Definition

Represents the percentage of voting stock to be held by optionees for entitlement to exercise price less than the specified percentage of the fair market value of common stock.

+ References

No definition available.

+ Details

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- Definition

The period of time from the grant date until the time at which the share-based option award expires for holders of incentive stock options of more than the specified percentage of voting stock.

+ References

No definition available.

+ Details

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- Definition

Aggregate number of common shares reserved for future issuance.

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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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- Definition

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

+ References

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- Definition

Number of additional shares authorized for issuance under share-based payment arrangement.

+ References

No definition available.

+ Details

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Number of shares authorized for issuance under share-based payment arrangement.

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

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- Definition

Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

Number, before forfeiture, of shares issued under share-based payment arrangement. Excludes employee stock ownership plan (ESOP).

+ References

No definition available.

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Note 8 - Stock Options (Details Textual) $ in Thousands						12 Months Ended
Note 8 - Stock Options (Details Textual) $ in Thousands	May 17, 2012 shares	May 19, 2011 shares	May 20, 2010 shares	May 29, 2008 shares	May 30, 2007 shares	Dec. 31, 2019 USD ($) shares	Dec. 31, 2018 shares	Dec. 31, 2017 shares	Mar. 19, 2015 shares	May 21, 2009 shares
Number of Stock-based Compensation Plans						2
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number, Ending Balance						975,000	1,235,000	1,746,000
Common Stock, Capital Shares Reserved for Future Issuance						2,491,543
Share-based Compensation Arrangement by Share-based Payment Award, Award Exercisable Period 2						3 years
Share-based Compensation Arrangement by Share-based Payment Award, Award Exercisable Period 3						5 years
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period						10 years
Share-based Compensation Arrangements By Share-based Payment Award, Options Expiration Term For Options Granted To Holders Of More Than Specified Percentage Of Voting Stock						5 years
Share-based Payment Arrangement, Nonvested Award, Option, Cost Not yet Recognized, Amount \| $						$ 86
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition						1 year 65 days
Maximum [Member]
Share-based Compensation Arrangement By Share-based Payment Award Of Exercise Price Of Common Stock Percentage In Case Of Optionees Holding More Than Specified Percentage Of Voting Stock						110.00%
Minimum [Member]
Share-based Compensation Arrangement By Share-based Payment Award Voting Stock Percentage To Be Held By Optionees						10.00%
The 2005 Stock Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized	3,700,000	3,400,000	3,000,000		1,500,000	750,000				2,500,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized	300,000	400,000	500,000	500,000	750,000
Aggregate Stock Options Exercised for the Plan						1,563,235
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number, Ending Balance						824,100
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants Aggregate						3,892,000
Share-based Compensation Arrangement by Share-based Payment Award, Options Forfeitures Aggregate						1,504,665
Common Stock, Capital Shares Reserved for Future Issuance						824,000
The 2015 Stock Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized						449,000			600,000
Aggregate Stock Options Exercised for the Plan						0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number, Ending Balance						151,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants Aggregate						154,000
Share-based Compensation Arrangement by Share-based Payment Award, Options Forfeitures Aggregate						3,000
Number of Equity Incentive Programs						3
Shares Issued, Shares, Share-based Payment Arrangement, before Forfeiture						0
Common Stock, Capital Shares Reserved for Future Issuance						600,000
The 2015 Stock Incentive Plan [Member] \| Non-employee Board Member [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options That Will Be Granted Upon Initial Election Or Appointment to Board						10,000
Share-based Compensation Arrangement by Share-based Payment Award, Preceding Period With in Which Individual Should Not Be Employed						90 days
Share-based Compensation Arrangement by Share-based Payment Award, Option That Will Be Granted to Purchase Shares On Date of Each Annual Stockholders Meeting						8,000