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Common Stock (Tables)
 12 Months Ended
Dec. 31, 2013
Equity [Abstract]  
Schedule of Changes in Common Stock

Changes in common stock for each period are as follows:

 

     Year Ended December 31,  
     2013      2012
(As Restated)		      2011
(As Restated)		  
     Shares     Amount      Shares     Amount      Shares     Amount  

Common stock at the beginning of the period

      35,635,357      $ 396         37,907,575      $ 394         38,401,989      $ 384   

Forfeiture of restricted stock bonuses

      —         —          —         —          (3,465 )      —    

Issuance of common stock

      —         —          4,499        —          950,586        10   

Exercise of stock options

      579,476        6         155,708        2         90,005        —    

Exercise of warrants

      448,281        4         52        —          —         —    

Acquisitions of treasury stock

      (2,614,748 )      —          (2,432,477 )      —          (1,531,540 )      —    
  

 

 

    

 

 

     

 

 

    

 

 

     

 

 

    

 

 

  

Total common stock outstanding at the end of the period

      34,048,366      $ 406         35,635,357      $ 396         37,907,575      $ 394