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

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

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Weighted average exercise price as of the balance sheet date for those equity-based payment arrangements exercisable and outstanding.

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-Publisher FASB

-Name Accounting Standards Codification

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The floor of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.

+ References

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The number of shares reserved for issuance pertaining to the outstanding exercisable stock options as of the balance sheet date in the customized range of exercise prices for which the market and performance vesting condition has been satisfied.

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The number of shares reserved for issuance pertaining to the outstanding stock options as of the balance sheet date for all option plans in the customized range of exercise prices.

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Weighted average remaining contractual term of outstanding stock options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The ceiling of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.

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Note 8 - Common Stock (Details) - Options Granted Under the Plans (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Number of options outstanding (in Shares)	1,783
Number of options outstanding - weighted average remaining contractual life	7 years 248 days
Number of options outstanding - weighted average exercise price	$ 3.79	$ 4.11	$ 4.06	$ 4.21
Number of options exercisable (in Shares)	617
Number of options exercisable - weighted average exercise price	$ 2.88
Range 1 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of exercise prices - lower	$ 1.36
Range of exercise prices - upper	$ 4.18
Number of options outstanding (in Shares)	800
Number of options outstanding - weighted average remaining contractual life	6 years 339 days
Number of options outstanding - weighted average exercise price	$ 2.43
Number of options exercisable (in Shares)	431
Number of options exercisable - weighted average exercise price	$ 1.97
Range 2 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of exercise prices - lower	$ 4.19
Range of exercise prices - upper	$ 6.61
Number of options outstanding (in Shares)	983
Number of options outstanding - weighted average remaining contractual life	8 years 105 days
Number of options outstanding - weighted average exercise price	$ 4.89
Number of options exercisable (in Shares)	186
Number of options exercisable - weighted average exercise price	$ 4.99