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Note 10 - Shareholders' Equity (Details) - Summary Of Stock Options Activity By Range Of Exercise Prices (USD $) | 12 Months Ended |
--- | --- | ---
Dec. 29, 2013 | Dec. 30, 2012
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |  |  |
Outstanding (in Shares) | 184,000 | [1] | 393,500
Weighted average remaining contractual life | 5 years 292 days |  |
Weighted average exercise price, outstanding | $ 8.18 | [1] | $ 8.49
Exercisable (in Shares) | 184,000 | [2] |
Weighted average exercise price, exercisable | $ 8.18 |  |
Exercise Price Range One [Member] |  |  |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |  |  |
Lower exercise price | $ 1.49 |  |
Upper exercise price | $ 4.00 |  |
Outstanding (in Shares) | 7,500 |  |
Weighted average remaining contractual life | 5 years 36 days |  |
Weighted average exercise price, outstanding | $ 1.49 |  |
Exercisable (in Shares) | 7,500 |  |
Weighted average exercise price, exercisable | $ 1.49 |  |
Exercise Price Range Two [Member] |  |  |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |  |  |
Lower exercise price | $ 4.01 |  |
Upper exercise price | $ 7.00 |  |
Outstanding (in Shares) | 77,500 |  |
Weighted average remaining contractual life | 5 years |  |
Weighted average exercise price, outstanding | $ 4.31 |  |
Exercisable (in Shares) | 77,500 |  |
Weighted average exercise price, exercisable | $ 4.31 |  |
Exercise Price Range Three [Member] |  |  |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |  |  |
Lower exercise price | $ 7.01 |  |
Upper exercise price | $ 12.00 |  |
Outstanding (in Shares) | 20,000 |  |
Weighted average remaining contractual life | 5 years 292 days |  |
Weighted average exercise price, outstanding | $ 7.78 |  |
Exercisable (in Shares) | 20,000 |  |
Weighted average exercise price, exercisable | $ 7.78 |  |
Exercise Price Range Four [Member] |  |  |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |  |  |
Lower exercise price | $ 12.01 |  |
Upper exercise price | $ 14.00 |  |
Outstanding (in Shares) | 79,000 |  |
Weighted average remaining contractual life | 6 years 219 days |  |
Weighted average exercise price, outstanding | $ 12.47 |  |
Exercisable (in Shares) | 79,000 |  |
Weighted average exercise price, exercisable | $ 12.47 |  |
[1] | At December 29, 2013, the weighted-average remaining contractual life of options outstanding was 5.8 years.
[2] | At December 29, 2013, the weighted-average remaining contractual life of options exercisable was 5.8 years.

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- Definition 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. + 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)(iii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Number of options outstanding, including both vested and non-vested options. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan. + 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)(i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition 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. + 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 (e)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Weighted average exercise price as of the balance sheet date for those equity-based payment arrangements exercisable and outstanding. + 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)(iii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition 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 Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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