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Note 10 - Per Share Data (Details) - Unissued Shares of Common Stock Were Reserved For The Following Purposes | Dec. 28, 2013 | Dec. 29, 2012 | Dec. 31, 2011
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Unissued Shares of Common Stock Were Reserved For The Following Purposes [Abstract] |  |  |
Exercise of options outstanding | 276,900 | 307,400 | 916,594
Restricted stock awards outstanding | 300,000 | 350,000 |
Future grants of options or shares | 34,100 | 34,100 |
Shares reserved for employee stock purchase plan | 189,576 | 247,752 |
Total | 800,576 | 939,252 |

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