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Income Per Share of Common Stock (Tables)
 9 Months Ended
Sep. 30, 2012
Income Per Share of Common Stock  
Schedule of computation of basic and diluted income per common share

 

 

 

 

Three Months Ended
September 30,

 

Nine Months Ended
September 30,

 

 

 

2012

 

2011

 

2012

 

2011

 

Numerator:

 

 

 

 

 

 

 

 

 

Income for basic and diluted income per common share

 

$

3,947

 

7,062

 

$

12,631

 

17,671

 

Denominator:

 

 

 

 

 

 

 

 

 

Weighted-average shares for basic income per share

 

5,550

 

6,322

 

5,757

 

6,384

 

Effect of dilutive securities:

 

 

 

 

 

 

 

 

 

Employee and director stock options (1)

 

8

 

16

 

11

 

17

 

Adjusted weighted-average shares and assumed exercises for diluted income per share

 

5,558

 

6,338

 

5,768

 

6,401

 

Income per share of common stock:

 

 

 

 

 

 

 

 

 

Basic

 

$

0.71

 

1.12

 

$

2.19

 

2.77

 

Diluted

 

$

0.71

 

1.11

 

$

2.19

 

2.76

 

 

 

(1)  Options to acquire 9.9 and 9.5 shares of common stock were excluded from the calculation of dilutive securities for the 2012 and 2011 periods, respectively, as they were anti-dilutive because the exercise price exceeded the average per share market price for the periods presented.