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Information Services Contracts (Tables)
 12 Months Ended
Dec. 31, 2012
Information Services Contracts [Abstract]  
Schedule Of Payments Under Information Services Contracts
 
2012
 
2011
 
2010
Information service contract payments
$
13,221

 
$
13,038

 
$
13,426
Schedule Of Contractual Obligation Fiscal Year Maturity
 
2013
 
2014
 
2015
 
2016
 
2017
 
Thereafter
 
Total
Contractual obligations
$
11,175

 
$
9,400

 
$
8,700

 
$
8,700

 
$
8,600

 
$
900

 
$
47,475