Annual report pursuant to Section 13 and 15(d)

Property, Software And Equipment (Details)

v2.4.0.6
Property, Software And Equipment (Details) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Property, Plant and Equipment [Line Items]      
Property, software and equipment, gross $ 581,109 $ 526,916  
Less accumulated depreciation (203,383) (177,294)  
Property, software and equipment, net 377,726 349,622  
Depreciation expense 50,112 42,249 37,131
Computer Software [Member]
      
Property, Plant and Equipment [Line Items]      
Property, software and equipment, gross 164,797 158,672  
Buildings [Member]
      
Property, Plant and Equipment [Line Items]      
Property, software and equipment, gross 193,187 186,194  
Land [Member]
      
Property, Plant and Equipment [Line Items]      
Property, software and equipment, gross 70,276 47,614  
Computer Hardware [Member]
      
Property, Plant and Equipment [Line Items]      
Property, software and equipment, gross 57,851 51,805  
Furniture And Office Equipment [Member]
      
Property, Plant and Equipment [Line Items]      
Property, software and equipment, gross 44,327 37,865  
Leasehold Improvements [Member]
      
Property, Plant and Equipment [Line Items]      
Property, software and equipment, gross 50,671 44,766  
Assets Held Under Capital Leases [Member]
      
Property, Plant and Equipment [Line Items]      
Less accumulated depreciation (1,595) (1,285)  
Property, software and equipment, net $ 6,133 $ 6,316