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Accrued Expenses and Other Liabilities (Tables)
 12 Months Ended
Dec. 31, 2011
Accrued Expenses

Accrued expenses consist of the following at December 31, 2011 and 2010:

 

     2011      2010  
     (in thousands)  

Payroll and payroll-related expenses

    $ 1,120       $ 1,631   

Research and development expenses

      1,132         340   

Income taxes payable

      —           585   

All other

      1,781         572   
  

 

 

     

 

 

  
   $ 4,033       $ 3,128