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Earnings Per Share
 3 Months Ended
Mar. 31, 2012
Earnings Per Share [Abstract]  
Earnings Per Share
EARNINGS PER SHARE

The following table sets forth the computation of basic and diluted net loss per share:
 
Three Months Ended
 
March 31,
 
2012
 
2011
Net loss
$
(638
)
 
$
(1,468
)
Shares used in computing net loss per share - basic and diluted 1
18,029

 
13,569

Net loss per common share - basic and diluted
$
(0.04
)
 
$
(0.11
)

1 
The increase in shares from the first quarter of 2011 to the first quarter of 2012 is primarily due to the sale of approximately 4,198 shares of common stock in an underwritten registered offering during May 2011.

The following weighted average shares were excluded from the calculation of diluted net loss per share as their effect would have been anti-dilutive: 
 
Three Months Ended
 
March 31,
 
2012
 
2011
Employee equity incentive plans
3,839

 
3,434

Conversion of debentures
—

 
216


Potentially dilutive common shares from employee equity incentive plans are determined by applying the treasury stock method to the assumed exercise of outstanding stock options, the assumed vesting of outstanding restricted stock awards and units, and the assumed issuance of common stock under the employee stock purchase plan. Potentially dilutive common shares issuable upon conversion of our convertible subordinated debentures were computed using the if-converted-method.