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Accrued Expenses and Other Liabilities (Tables)
 12 Months Ended
Dec. 31, 2012
Accrued Expenses

Accrued expenses consist of the following at December 31, 2012 and 2011:

 

     2012      2011  
     (in thousands)  

Payroll and payroll-related expenses

    $ 2,065       $ 1,120   

Research and development expenses (1)

      10         1,132   

All other

      3,149         1,781   
  

 

 

     

 

 

  
   $ 5,224       $ 4,033   
  

 

 

     

 

 

  

 

(1) Research and development accruals are based on the timing of clinical trial activities and related progress payments.