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Income Taxes (Tables)
12 Months Ended
Dec. 31, 2013
Income Taxes  
Reconciliation of unrecognized tax benefits

 A reconciliation of the Company's beginning and ending unrecognized tax benefits follows (in thousands):

 
  Amount  

Balance at January 1, 2011

  $ 6,890  

Additions based on prior years' tax positions

    1,783  

Reductions based on prior years' tax positions

    (6,890 )

Additions based on 2011 tax positions

    194  
       

Balance at December 31, 2011

    1,977  

Reductions based on prior years' tax positions

     

Additions based on 2012 tax positions

     
       

Balance at December 31, 2012

    1,977  

Reductions based on prior years' tax positions

    (890 )

Additions based on 2013 tax positions

     
       

Balance at December 31, 2013

  $ 1,087