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Note 11 - Share Based Compensation (Details) - Information About Stock Options Outstanding (USD $) | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 28, 2013 | Dec. 29, 2012 | Dec. 31, 2011
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |  |  |
Number of Options Outstanding (in Shares) | 276,900 | 307,400 | 916,594
Number of Options Vested (in Shares) | 221,900 |  |
Weighted-Average Remaining Contractual Life, Outstanding | 3 years 102 days |  |
Weighted-Average Remaining Contractual Life, Vested | 1 year 350 days |  |
Weighted-Average Exercise Price, Outstanding | $ 5.47 | $ 5.34 | $ 4.24
Weighted-Average Exercise Price, Vested | $ 5.45 |  |
Range 1 [Member] |  |  |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |  |  |
Lower Range of Exercise Price | $ 2.50 |  |
Upper Range of Exercise Price | $ 2.50 |  |
Number of Options Outstanding (in Shares) | 1,000 |  |
Number of Options Vested (in Shares) | 1,000 |  |
Weighted-Average Remaining Contractual Life, Outstanding | 5 years 350 days |  |
Weighted-Average Remaining Contractual Life, Vested | 5 years 350 days |  |
Weighted-Average Exercise Price, Outstanding | $ 2.50 |  |
Weighted-Average Exercise Price, Vested | $ 2.50 |  |
Range 2 [Member] |  |  |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |  |  |
Lower Range of Exercise Price | $ 4.16 |  |
Upper Range of Exercise Price | $ 5.78 |  |
Number of Options Outstanding (in Shares) | 233,400 |  |
Number of Options Vested (in Shares) | 178,400 |  |
Weighted-Average Remaining Contractual Life, Outstanding | 3 years 149 days |  |
Weighted-Average Remaining Contractual Life, Vested | 1 year 292 days |  |
Weighted-Average Exercise Price, Outstanding | $ 4.82 |  |
Weighted-Average Exercise Price, Vested | $ 4.60 |  |
Range 3 [Member] |  |  |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |  |  |
Lower Range of Exercise Price | $ 6.44 |  |
Upper Range of Exercise Price | $ 9.16 |  |
Number of Options Outstanding (in Shares) | 17,500 |  |
Number of Options Vested (in Shares) | 17,500 |  |
Weighted-Average Remaining Contractual Life, Outstanding | 1 year 21 days |  |
Weighted-Average Remaining Contractual Life, Vested | 1 year 21 days |  |
Weighted-Average Exercise Price, Outstanding | $ 8.01 |  |
Weighted-Average Exercise Price, Vested | $ 8.01 |  |
Range 4 [Member] |  |  |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |  |  |
Lower Range of Exercise Price | $ 9.81 |  |
Upper Range of Exercise Price | $ 9.81 |  |
Number of Options Outstanding (in Shares) | 25,000 |  |
Number of Options Vested (in Shares) | 25,000 |  |
Weighted-Average Remaining Contractual Life, Outstanding | 3 years 200 days |  |
Weighted-Average Remaining Contractual Life, Vested | 3 years 200 days |  |
Weighted-Average Exercise Price, Outstanding | $ 9.81 |  |
Weighted-Average Exercise Price, Vested | $ 9.81 |  |

X
- 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 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. + 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)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition 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. + 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 remaining contractual term for fully vested and expected to vest options 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 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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- Definition 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. + 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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