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Note 10 - Per Share Data
 3 Months Ended
Mar. 31, 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 common shares used to calculate basic and diluted earnings per share for the thirteen week periods ended March 31, 2012 and April 2, 2011 was determined as follows:

   
Thirteen Week Periods Ended
 
   
March 31,
2012
   
April 2,
2011
 
             
Basic weighted average shares outstanding
    12,752,326       13,084,488  
Dilutive effect of outstanding stock options
    210,802       153,125  
                 
Weighted average dilutive shares outstanding
    12,963,128       13,237,613  

There were 62,500 and 194,400 options not included in the calculation of common stock equivalents because the exercise price of the options exceeded the average market price during the thirteen weeks ended March 31, 2012 and April 2, 2011, respectively.

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

   
March 31,
2012
   
December 31,
2011
 
             
Exercise of options outstanding
    878,094       916,594  
Future grants of options or shares
    417,600       437,600  
Shares reserved for employee stock purchase plan
    263,056       276,957  
                 
Total
    1,558,750       1,631,151