Note 8 - Shareholders' Equity Option Rollforward (Details Narrative) (USD $)	3 Months Ended
Mar. 29, 2015	Dec. 31, 2014
Note 8 - Shareholders Equity Option Rollforward Details Narrative
Options outstanding	2,277,456	2,056,122
Options outstanding - weighted average exercise price	$ 6.17	$ 6.66
Options outstanding - weighted average remaining contractual term (years)	4 years 15 days
Options outstanding - aggregate intrinsic value	$ 202,000
Options granted	277,000
Options granted - weighted average exercise price	$ 3.72
Options exercised	2,667
Options exercised - weighted average exercise price	$ 3.22
Options forfeited or expired	52,999
Options forfeited or expired - weighted average exercise price	$ 12.22
Options vested and expected to vest	2,126,019
Options vested and expected to vest - weighted average exercise price	$ 6.34
Options vested and expected to vest - weighted average remaining contractual term (years)	3 years 325 days
Options vested and expected to vest - aggregate intrinsic value	168,000
Options Exercisable	1,338,129
Options exercisable - weighted average exercise price	$ 5.25
Options exercisable - weighted average remaining contractual term (years)	3 years 29 days
Options exercisable - aggregate intrinsic value	$ 79,000

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

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

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Number of non-vested options forfeited.

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Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

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

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

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

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Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of fully vested and expected to vest options that are exercisable.

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As of the balance sheet date, the weighted-average exercise price (at which grantees can acquire the shares reserved for issuance) for exercisable stock options that are fully vested or expected to vest.

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Weighted average remaining contractual term for fully vested and expected to vest options that are exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount by which the current fair value of the underlying stock exceeds the exercise price of fully vested and expected to vest options outstanding.

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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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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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Weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated.

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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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

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