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Stockholders' Equity (Tables)
 6 Months Ended
Jun. 30, 2014
Equity [Abstract]  
Activity Relating to Common Shares

The following table summarizes the activity relating to shares of the Company’s common stock during the six months ended June 30, 2014 (in thousands):

 

     Issued
Shares		     Treasury
Shares		     Outstanding
Shares		  

Balance, as of December 31, 2013

      43,641        (8,275 )      35,366   
  

 

 

    

 

 

    

 

 

  

Conversion of preferred stock

      65        —          65   

Shares repurchased

      —          (1,672 )      (1,672 ) 

Options exercised

      1,725        —          1,725   

Restricted stocks grants

      950        —          950   

Shares acquired through cashless exercise (1)

      —          (1,446 )      (1,446 ) 

Shares cancelled

      (1,446 )      1,446        —     
  

 

 

    

 

 

    

 

 

  

Balance, as of June 30, 2014

      44,935        (9,947 )      34,988   
  

 

 

    

 

 

    

 

 

  

 

(1) All shares acquired represent shares tendered to cover the strike price for options and tax withholdings on the intrinsic value of options exercised or restricted stock vested. These shares have been cancelled by the Company.