Note 10 - Per Share Data (Details) - Unissued shares of common stock were reserved for the following purposes	Jun. 29, 2013	Dec. 29, 2012
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