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Note 10 - Per Share Data (Details) - Unissued shares of common stock were reserved for the following purposes | Jun. 29, 2013 | Dec. 29, 2012
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Unissued shares of common stock were reserved for the following purposes [Abstract] |  |
Exercise of options outstanding | 284,900 | 307,400
Restricted stock awards outstanding | 350,000 | 350,000
Future grants of options or shares | 34,100 | 34,100
Shares reserved for employee stock purchase plan | 221,271 | 247,752
Total | 890,271 | 939,252

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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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