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Note 10 - Per Share Data (Details) - Unissued Shares of Common Stock Were Reserved For The Following Purposes | Mar. 29, 2014 | Dec. 28, 2013
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Unissued Shares of Common Stock Were Reserved For The Following Purposes [Abstract] |  |
Exercise of options outstanding | 252,400 | 276,900
Restricted stock awards outstanding | 300,000 | 300,000
Future grants of options or shares | 34,100 | 34,100
Shares reserved for employee stock purchase plan | 155,714 | 189,576
Total | 742,214 | 800,576

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- Definition Aggregate number of common shares reserved for future issuance. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.29) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Number of equity instruments other than options outstanding, including both vested and non-vested instruments. + 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 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)(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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