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Net Loss per Common Share
9 Months Ended
Dec. 31, 2011
Net Loss per Common Share [Abstract]  
Net Loss per Common Share
9. Net Loss per Common Share

Basic net loss per common share excludes dilution and is computed by dividing net loss applicable to common shareholders by the weighted average number of common shares outstanding during the three- and nine- month periods ended December 31, 2011 and 2010.  The following options outstanding and unvested restricted stock at December 31, to purchase shares of common stock, were excluded from diluted loss per common share because of their anti-dilutive effect, and therefore, basic net loss per common share equals dilutive net loss per common share for all periods presented in our consolidated statements of operations:

   
Number of options
and unvested
restricted stock
  
Range of
exercise prices
 
        
December 31, 2011
  2,177,866  $0.77 to $8.93 
December 31, 2010
  2,155,200  $0.71 to $5.64