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Cash and Cash Equivalents (Notes)
12 Months Ended
Dec. 31, 2012
Cash and Cash Equivalents [Abstract]  
Cash and Cash Equivalents Disclosure [Text Block]

A summary of cash and cash equivalents follows (in thousands):
 
December 31,
 
2012
 
2011
Cash
$
404,158

 
$
580,047

Money market funds
50,055

 
215

 
$
454,213

 
$
580,262


See additional information at the “Description of Business and Summary of Significant Accounting Policies” and “Fair Value” notes of the Notes to Consolidated Financial statements.