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NET INCOME PER SHARE
 12 Months Ended
Dec. 31, 2011
Earnings Per Share [Abstract]  
NET INCOME PER SHARE
11.
NET INCOME PER SHARE
 
Net income per share is calculated as follows (in thousands, except per share data):
 
Year ended December 31,
2011
2010
2009
Net income
 $ 2,567 $ 180 $ 982
Weighted-average common shares outstanding
20,534 19,971 20,869
Additional dilutive common stock equivalents
201 211 5
Diluted shares outstanding
20,735 20,182 20,874
Net income per share – basic
$ 0.12 $ 0.01 $ 0.05
Net income per share – diluted
$ 0.12 $ 0.01 $ 0.05
 
For the years ended December 31, 2011, 2010 and 2009, options to purchase 2,518,914, 4,936,391, and 5,970,722 shares of common stock at weighted average exercise prices of $4.62, $4.36, and $4.44 per share, respectively, were outstanding, but were not included in the computation of diluted EPS because the options’ exercise prices were greater than the average market price of the common shares and thus would be anti-dilutive.