v2.4.0.6
Fixed Assets, net
12 Months Ended
Dec. 31, 2011
Fixed Assets, net [Abstract]  
Fixed Assets, net
5.             Fixed Assets, net

Fixed assets are stated at cost and depreciated or amortized when available by applying the straight-line method, based on useful lives as follows:

   
Estimated
       
Asset Description
 
Useful Life (years)
  
2011
  
2010
 
           
Lab equipment
  7  $3,072  $2,595 
Furniture and fixtures
  7   56   54 
Computer hardware and software
  5   469   405 
Office equipment
  7   115   48 
Leasehold improvements
 
lease term
   577   979 
        4,289   4,081 
Less accumulated depreciation
      (2,352)  (2,979)
Fixed assets, net
     $1,937  $1,102 

Depreciation expense was $0.3 million, $0.1 million and $0.7 million for the years ended December 31, 2011, 2010 and 2009, respectively.  Depreciation expense includes depreciation for equipment under capital lease obligations.

Fixed assets include equipment held under capital lease obligations with an approximate net carrying value of $0.4 million and $0.1 million as of December 31, 2011 and 2010, respectively.