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Reportable Segments and Geographic Information (Details 2) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Assets from reportable segments to total assets      
Assets associated with discontinued operations $ 21,360 $ 50,347  
Total assets 4,227,157 4,254,847  
Continuing Operations
      
Assets from reportable segments to total assets      
Total assets 4,205,797 4,204,500 4,176,571
Reportable Segments | Continuing Operations
      
Assets from reportable segments to total assets      
Total assets 3,285,986 3,327,566 3,321,620
Other assets | Continuing Operations
      
Assets from reportable segments to total assets      
Total assets $ 919,811 $ 876,934 $ 854,951