v2.3.0.15
Cash And Cash Equivalents
9 Months Ended
Sep. 30, 2011
Cash And Cash Equivalents [Abstract] 
Cash And Cash Equivalents

4. Cash and Cash Equivalents

Cash and cash equivalents as of December 31, 2010 and September 30, 2011 comprise:

 

     As of December 31, 2010      As of September 30, 2011  

Deposits with banks

    $ 208,072       $ 240,635   

U.S. Treasury bills

      91,490         —     

Other cash and bank balances

      104,472         168,430   
  

 

 

     

 

 

  

Total

    $ 404,034       $ 409,065   
  

 

 

     

 

 

  

The cash and cash equivalents as of December 31, 2010 and September 30, 2011 include restricted cash balance of $0 and $421, respectively. Restrictions are primarily on account of margin money against derivative instruments.