Number of options each director received at each annual meeting.

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- Definition

Options vesting percentage on first and second anniversary.

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No definition available.

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- Definition

Sharebased compensation arrangement by sharebased payment award number of options ungranted.

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- Definition

Unrecognized cost of unvested share-based compensation awards.

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Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

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- Definition

The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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- Definition

For presentations that combine terminations, 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 or that expired.

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- Definition

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

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No definition available.

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As of the balance sheet date, the number of shares into which fully vested and expected to vest stock options outstanding can be converted under the option plan.

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- Definition

Expected term of share-based compensation awards, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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

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Note 13 - Stock Option Plans (Details Textual) - USD ($)	1 Months Ended	6 Months Ended	12 Months Ended		168 Months Ended
	Aug. 31, 2000	Dec. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2016	Jun. 30, 2015	Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross			42,000	12,000	1,285,500
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period			12,000	4,000	740,320
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period			0	8,000	240,680
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number		254,500	256,500	254,500	256,500
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number			48,000		48,000
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term			10 years	10 years
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized			$ 103,000		$ 103,000
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition			2 years 292 days
Minimum [Member] \| Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period				2 years
Maximum [Member] \| Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period				3 years
The 2003 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized		450,000		450,000
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period				3 years
Sharebased Compensation Arrangement By Sharebased Payment Award Number Of Options Ungranted							197,500
The 2015 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized						750,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross		0	30,000
The Directors Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized	200,000
Sharebased Compensation Arrangement By Sharebased Payment Award Number Of Options Ungranted	60,000
Number Of Options Each Director Received At Each Annual Meeting	4,000
Options Vesting Percentage On First And Second Anniversary	50.00%
The Directors Plan [Member] \| Director [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross	5,000