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Business Segments (Tables)
3 Months Ended
Mar. 31, 2012
Business Segments [Abstract]  
Business Segments
     Three Months Ended
March 31,
 
     2012     2011  

Net service revenues

    

Temporary and consultant staffing

   $ 829,657      $ 714,682   

Permanent placement staffing

     82,862        67,604   

Risk consulting and internal audit services

     102,925        98,583   
  

 

 

   

 

 

 
   $ 1,015,444      $ 880,869   
  

 

 

   

 

 

 

Operating income (loss)

    

Temporary and consultant staffing

   $ 69,154      $ 38,070   

Permanent placement staffing

     13,266        7,867   

Risk consulting and internal audit services

     (2,355     (1,534
  

 

 

   

 

 

 
     80,065        44,403   

Amortization of intangible assets

     35        39   

Interest income, net

     (234     (212
  

 

 

   

 

 

 

Income before income taxes

   $ 80,264      $ 44,576