Note 10 - Per Share Data (Details) - Unissued Shares of Common Stock Were Reserved For The Following Purposes	Sep. 28, 2013	Dec. 29, 2012
Unissued Shares of Common Stock Were Reserved For The Following Purposes [Abstract]
Exercise of options outstanding	279,900	307,400
Restricted stock awards outstanding	327,500	350,000
Future grants of options or shares	56,600	34,100
Shares reserved for employee stock purchase plan	189,576	247,752
Total	853,576	939,252