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Stock-Based Compensation
 3 Months Ended
Mar. 31, 2013
Stock-Based Compensation [Abstract]  
Stock-Based Compensation
4.   Stock-Based Compensation

The Company uses the Black-Scholes option pricing model to calculate the fair value of stock option awards as of their grant date. Stock-based compensation expense for the three months ended March 31 was as follows (in thousands):

 

                 
    Three Months Ended
March 31,		  
    2013     2012  
     

Cost of revenues

   $ 4     $ 13  

Selling, general and administrative

     183       227  

Research and development

     76       78  
   

 

 

    

 

 

  

Total stock-based compensation

   $ 263     $ 318  
   

 

 

    

 

 

  

During the third quarter of 2010, the Company granted 1,243,750 non-qualified stock options under the Vicor Corporation Amended and Restated 2000 Stock Option and Incentive Plan, with performance-based vesting provisions tied to achievement of certain quarterly revenue targets by the Brick Business Unit. Under the accounting rules for performance-based awards, the Company is required to assess, on an ongoing basis, the probability of whether the performance criteria will be achieved. If and when achievement is deemed probable, the Company will begin to recognize the associated compensation expense for the stock options over the relevant performance period. As of March 31, 2013, the Company determined that it was not probable the revenue targets could be achieved and, accordingly, has not recorded any compensation expense relating to these options since the grant date. The unrecognized compensation expense of these performance-based options was approximately $7,790,000 as of March 31, 2013.

On December 31, 2010, the Company granted 2,984,250 non-qualified stock options under the VI Chip 2007 Stock Option and Incentive Plan with performance-based vesting provisions tied to achievement of certain margin targets by the VI Chip subsidiary. As of December 31, 2010, the Company determined it was probable the margin targets could be achieved and, accordingly, began recording compensation expense relating to these options beginning January 1, 2011. This determination remains the same as of March 31, 2013 and, accordingly, expense has been recorded through that date. The unrecognized compensation expense of these performance-based options was approximately $850,000 as of March 31, 2013.