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Note 10 - Per Share Data
 9 Months Ended
Sep. 29, 2012
Stockholders' Equity Note Disclosure [Text Block]
10.   Per Share Data

Both basic and diluted earnings per share for all periods are calculated based on the reported earnings in the Company’s consolidated statements of income.

The number of shares of common stock used to calculate basic and diluted earnings per share for the thirty-nine week periods ended September 29, 2012 and October 1, 2011 was determined as follows:

   
Thirteen Week Periods Ended
   
Thirty-Nine Week Periods Ended
 
   
September 29,
2012
   
October 1,
2011
   
September 29,
2012
   
October 1,
2011
 
                         
Basic weighted average shares outstanding
    12,057,478       12,994,565       12,422,558       13,046,216  
Dilutive effect of outstanding stock options
    194,731       147,305       205,140       179,241  
Weighted average dilutive shares outstanding
    12,252,209       13,141,870       12,627,698       13,225,457  

There were 62,500 and 184,264 anti-dilutive weighted shares not included in the calculation of common stock equivalents for the thirteen week periods ended September 29, 2012 and October 1, 2011, respectively.  There were 63,233 and 79,984 anti-dilutive weighted shares not included in the calculation of common stock equivalents for the thirty-nine week periods ended September 29, 2012 and October 1, 2011, respectively.

Unissued shares of common stock were reserved for the following purposes:

   
September 29, 2012
   
December 31,
2011
 
             
Exercise of options outstanding
    811,344       916,594  
Future grants of options or shares
    419,100       437,600  
Shares reserved for employee stock purchase plan
    247,752       276,957  
                 
Total
    1,478,196       1,631,151