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Accrued Liabilities (Tables)
 12 Months Ended
Dec. 31, 2012
Components of Accrued Liabilities

Accrued liabilities consist of the following as of December 31:

 

(in thousands)

    2012      2011  

Accrued compensation

    $ 2,549       $ 1,890   

Other accrued liabilities

      1,426         1,306   
  

 

 

     

 

 

  
   $ 3,975       $ 3,196