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Note 4 - Summary of the Balance and Activity for the Plans Related to Stock Options (Details)	9 Months Ended
	Oct. 03, 2015 shares
Restricted Stock [Member]
Outstanding, January 3, 2015 (in shares)	419,679
Granted (in shares)	106,278
Vested (in shares)	204,741
Forfeited (in shares)	42,497
Employee Stock Option [Member]
Outstanding, January 3, 2015 (in shares)	714,451
Granted (in shares)	71,517
Exercised (in shares)	150,409
Forfeited (in shares)	19,954
Canceled or expired (in shares)	39,200
Outstanding, October 3, 2015 (in shares)	278,719
Outstanding, October 3, 2015 (in shares)	576,405

X

- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

+ References

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



-Publisher FASB



-Name Accounting Standards Codification



-Topic 718



-SubTopic 10



-Section 50



-Paragraph 2



-Subparagraph (c)(1)(iv)(3)



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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 number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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Number of options or other stock instruments for which the right to exercise has lapsed under the terms of the plan agreements.

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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.

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

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