XML 62 R35.htm IDEA: XBRL DOCUMENT v2.4.0.8
Special Charges - Additional Information (Detail) (USD $)
 3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2013
Employee
Sep. 30, 2012
Sep. 30, 2013
Sep. 30, 2012
Dec. 31, 2012
Location
Employee
Special Charges [Line Items]          
Special charges $ 10,419,000 $ 2,775,000 $ 10,846,000 $ 29,557,000 $ 29,600,000
Non cash special charges 3,100,000   3,100,000   5,000,000
Number of employees terminated         116
Number of office locations         9
Number of employees included in the reduction in workforce related to the special charges recorded in the period 45        
Cash outflow associated with special charges, amount paid     31,900,000    
Cash outflow associated with special charges, amount paid     18,400,000    
Cash outflow associated with special charges, amount expected to be paid in 2013     3,800,000    
Cash outflow associated with special charges, amount expected to be paid in 2014     4,700,000    
Cash outflow associated with special charges, amount expected to be paid in 2015     1,100,000    
Cash outflow associated with special charges, amount expected to be paid in 2016     700,000    
Cash outflow associated with special charges, amount expected to be paid from 2017 to 2025     3,200,000    
Salary Continuance And Other Contractual Employee Related Costs
          
Special Charges [Line Items]          
Special charges 10,200,000        
Lease Termination
          
Special Charges [Line Items]          
Special charges $ 600,000        
Number of office locations 1