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Prepaid Expenses
 6 Months Ended
Jun. 30, 2011
Prepaid Expenses

(5) Prepaid Expenses

Prepaid expenses and other current assets consisted of the following:

 

     June 30,
2011		      December 31,
2010		  
     (in thousands)  

Prepaid clinical expenses

    $ 5,886       $ 2,741   

Interest receivable

      1,646         1,092   

Prepaid insurance

      674         311   

Prepaid maintenance costs

      573         495   

Other prepaid expenses and current assets

      515         225   
  

 

 

     

 

 

  
   $ 9,294       $ 4,864