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Note 11 - Share-based Compensation (Details) - Stock Option Activity - $ / shares	3 Months Ended		6 Months Ended
	Jun. 28, 2015	Jun. 29, 2014	Jun. 28, 2015	Jun. 29, 2014	Dec. 28, 2014	Dec. 29, 2013
2015
Options outstanding	753,117	758,117	753,117	758,117	755,617	798,171
Exercisable	678,870	605,141	678,870	605,141	616,792	585,769
Available for grant	276,635	274,635	276,635	274,635	276,635	263,424
Weighted-average exercise price (in Dollars per share)	$ 6.09	$ 6.08	$ 6.09	$ 6.08	$ 6.09	$ 5.97
Forfeited/cancelled/expired				(20,211)
Forfeited/cancelled/expired				19,211
Forfeited/cancelled/expired (in Dollars per share)				$ 4.95
Options outstanding, exercised	0	(24,343)	(2,500)	(27,843)
Weighted-average exercise price, exercised (in Dollars per share)			$ 6.14	$ 4.75
Available for grant, exercised			0	0
Granted	0	3,000	0	8,000
Granted				(8,000)
Granted (in Dollars per share)				$ 9.44

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The increase (decrease) of options available for grant due to exercises.

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Shares granted in the period that are available for grant.

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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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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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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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Weighted average price of options that were either forfeited or expired.

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

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

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