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Note 10 - Per Share Data (Detail) - Unissued shares of common stock were reserved for the following purposes
Dec. 29, 2012
Dec. 31, 2011
Jan. 01, 2011
Exercise of options outstanding 307,400 916,594 1,101,594
Restricted stock awards outstanding 350,000    
Future grants of options or shares 34,100 437,600  
Shares reserved for employee stock purchase plan 247,752 276,957  
Total 939,252 1,631,151