Number of shares reserved for future purchase under an employee stock purchase plan.

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Number of shares remaining that are reserved for future purchase under an employee stock purchase plan

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The number of shares available for grant under a share-based compensation plan, expressed as percentage of company's S outstanding common stock.

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Share Based Compensation Arrangement by Share Based Payment Award, Number of Shares to be Issued Upon Exercise of Outstanding Awards

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The number of shares into which fully or partially vested share-based compensation awards exercisable as of the balance sheet date can be currently converted under the option plan.

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The exercise price of options granted under a share-based compensation plan expressed as a percentage of the fair market value of common stock.

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Weighted average pre-vesting cancellation rate related to share-based compensation awards.

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Amount of additional stock repurchase plan authorized.

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The number of additional shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan.

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Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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The maximum number of common shares permitted to be issued by an entity's charter and bylaws.

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Unrecognized cost of unvested share-based compensation awards.

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The total recognized tax benefit related to compensation cost for equity-based payment arrangements recognized in income during the period.

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Weighted average purchase price of capital shares purchased through an employee stock ownership plan.

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The maximum number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) permitted to be issued by an entity's charter and bylaws.

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The cumulative amount of the reporting entity's undistributed earnings or deficit.

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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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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The estimated measure of the maximum percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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The estimated measure of the minimum percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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Number of equity instruments other than options outstanding, including both vested and non-vested instruments.

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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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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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The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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

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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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Price of a single share of a number of saleable stocks of a company.

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Percentage of vesting of share-based compensation awards.

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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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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.

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Number of shares of capital stock issued (purchased by employees) in connection with an employee stock ownership plan.

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Number of shares issued during the period as a result of an employee stock purchase plan.

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The remaining number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan.

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Total cost of shares repurchased divided by the total number of shares repurchased.

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Equity impact of the cost of common and preferred stock that were repurchased during the period. Recorded using the cost method.

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Note 13 - Stockholders' Equity (Details) - USD ($)		12 Months Ended				24 Months Ended	48 Months Ended
Note 13 - Stockholders' Equity (Details) - USD ($)	Dec. 31, 2008	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2009	Dec. 31, 2011	Dec. 31, 2015	Aug. 31, 2015	Nov. 30, 2013
Note 13 - Stockholders' Equity (Details) [Line Items]
Preferred Stock, Shares Authorized		5,000,000					5,000,000
Common Stock, Shares Authorized		50,000,000	50,000,000				50,000,000
Retained Earnings (Accumulated Deficit) (in Dollars)		$ (90,763,000)	$ (85,352,000)				$ (90,763,000)
Stock Repurchase Program, Number of Additional Shares Authorized to Be Repurchased								500,000	2,700,000
Stock Repurchase Program, Remaining Number of Shares Authorized to be Repurchased		905,040					905,040		308,000
Stock Repurchase Program, Authorized Amount, Additional (in Dollars)								$ 10,000,000
Treasury Stock, Shares, Acquired		1,295,000	1,414,000	390,000
Treasury Stock Acquired, Average Cost Per Share (in Dollars per share)		$ 10.24	$ 8.83	$ 8.95
Treasury Stock, Value, Acquired, Cost Method (in Dollars)		$ 13,269,000	$ 12,484,000	$ 3,490,000
Stock Issued During Period, Shares, Employee Stock Ownership Plan		1,024,000	908,000	1,066,000
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period		1 year
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized		7,233,000					7,233,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross		179,000	232,000	524,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number		3,740,000					3,740,000
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term		4 years 156 days	3 years 98 days	4 years 240 days
Allocated Share-based Compensation Expense (in Dollars)		$ 5,092,000	$ 5,359,000	$ 4,159,000
Employee Service Share-based Compensation, Tax Benefit from Compensation Expense (in Dollars)		$ 0	$ 0	$ 0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number		2,902,000					2,902,000
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized (in Dollars)		$ 3,061					$ 3,061
Non Employee Directors [Member]
Note 13 - Stockholders' Equity (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross		8,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period		4,000
Restricted Stock Units (RSUs) [Member]
Note 13 - Stockholders' Equity (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period		4 years
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number		706,000					706,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period		405,000	337,000	552,000
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding, Number		1,541,977					1,541,977
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value (in Dollars per share)		$ 10.43	$ 7.94	$ 6.17
Share-based Compensation Arrangement by Share-based Payment Award, Weighted Average Pre Vest Cancel Rate		3.49%	3.79%	3.84%
Restricted Stock Units (RSUs) [Member] \| First Anniversary [Member]
Note 13 - Stockholders' Equity (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage		25.00%
Stock Appreciation Rights (SARs) [Member]
Note 13 - Stockholders' Equity (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value (in Dollars per share)		$ 3.80	$ 3.47	$ 4.90
Stock Appreciation Rights (SARs) [Member] \| In the Money [Member]
Note 13 - Stockholders' Equity (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding, Number		1,541,977					1,541,977
Common Stock [Member]
Note 13 - Stockholders' Equity (Details) [Line Items]
Treasury Stock, Shares, Acquired		(1,295,000)	(1,414,000)	(390,000)
Treasury Stock, Value, Acquired, Cost Method (in Dollars)		$ 1,000	$ 1,000	$ 1,000
Share Price (in Dollars per share)		$ 9.44	$ 10.87	$ 9.71			$ 9.44
1993 Director Stock Option Plan [Member]
Note 13 - Stockholders' Equity (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized		1,980,875					1,980,875
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross		2,464,933
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period		10 years
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number		495,000					495,000
1993 Director Stock Option Plan [Member] \| First Option [Member]
Note 13 - Stockholders' Equity (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross		30,000
1993 Director Stock Option Plan [Member] \| Committee Option [Member]
Note 13 - Stockholders' Equity (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross		15,000
1998 Non-officer Employee Stock Option Plan [Member]
Note 13 - Stockholders' Equity (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period		48 months
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized		5,062,881					5,062,881
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period		7 years
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant		35,473					35,473
2001 Stock Incentive Plan [Member]
Note 13 - Stockholders' Equity (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options Grants in Period Exercise Price, Based on Percentage of Fair Market Value of Common Stock		100.00%
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period		48 months
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross		2,194,847
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period		7 years
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number		10,000					10,000
2003 Israeli Share Incentive Plan [Member]
Note 13 - Stockholders' Equity (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period		48 months
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross		10,700,543
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period		7 years
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number		922,595					922,595
2012 Equity Incentive Plan [Member]
Note 13 - Stockholders' Equity (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period		48 months
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized		2,450,000					2,450,000
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period		7 years
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant		1,027,577					1,027,577
1993 Employee Stock Purchase Plan (ESPP) [Member]
Note 13 - Stockholders' Equity (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options Grants in Period Exercise Price, Based on Percentage of Fair Market Value of Common Stock		85.00%
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized		1,170,000					1,170,000
Employee Stock Purchase Plan, ESPP Shares Reserved For Future Purchase		4,800,000					4,800,000
Stock Issued During Period, Shares, Employee Stock Purchase Plans		233,000	310,000	374,000
Employee Stock Ownership Plan (ESOP), Weighted Average Purchase Price of Shares Purchased (in Dollars per share)		$ 7.59	$ 5.55	$ 4.44
Employee Stock Purchase Plan ESPP Shares Reserved for Future Purchase, Remaining		1,170,000					1,170,000
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate, Minimum		22.83%	29.06%	36.37%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate, Maximum		34.53%	37.17%	44.19%
Each Quarter After First Anniversary [Member] \| Restricted Stock Units (RSUs) [Member]
Note 13 - Stockholders' Equity (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage		6.25%
Subsequent Option [Member] \| 1993 Director Stock Option Plan [Member]
Note 13 - Stockholders' Equity (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross		15,000
Minimum [Member]
Note 13 - Stockholders' Equity (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options Grants in Period Exercise Price, Based on Percentage of Fair Market Value of Common Stock		100.00%
Minimum [Member] \| 1993 Employee Stock Purchase Plan (ESPP) [Member]
Note 13 - Stockholders' Equity (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term		6 months
Maximum [Member]
Note 13 - Stockholders' Equity (Details) [Line Items]
Share Based Compensation Arrangement By Share Based Payment Award Number of Shares to Be Issued Upon Exercise of Outstanding Awards		3,154,626					3,154,626
Share-based Compensation Arrangement by Share-based Payment Award, Options and Stock Appreciation Rights, Exercisable, Number		1,992,668					1,992,668
Maximum [Member] \| Stock Appreciation Rights (SARs) [Member]
Note 13 - Stockholders' Equity (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant As Percentage of Company S Outstanding Common Stock	50.00%				75.00%	66.67%	50.00%
Maximum [Member] \| 1993 Employee Stock Purchase Plan (ESPP) [Member]
Note 13 - Stockholders' Equity (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term		24 months