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Accounts Payable and Accrued Expenses (Tables)
9 Months Ended
Sep. 30, 2012
Schedule of Accounts Payable and Accrued Expenses
     September 30, 2012      December 31, 2011  

Accounts payable

   $ 9,970       $ 12,264   

Accrued salaries and bonuses

     131,593         147,613   

Accrued payroll taxes and benefits

     37,488         29,443   

Accrued contingent consideration

     17,164         12,089   

Accrued professional liabilities

     13,821         13,218   

Accrual for uncertain tax positions

     3,242         3,242   

Other accrued expenses

     11,632         16,666   
  

 

 

    

 

 

 
   $ 224,910       $ 234,535