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Accounts Payable and Accrued Expenses: (Tables)
3 Months Ended
Mar. 31, 2013
Schedule of Accounts Payable and Accrued Expenses

Accounts payable and accrued expenses consist of the following (in thousands):

 

     March 31, 2013      December 31, 2012  

Accounts payable

   $ 9,584       $ 13,812   

Accrued salaries and bonuses

     53,742         160,495   

Accrued payroll taxes and benefits

     29,236         36,176   

Accrued contingent consideration

     18,896         16,109   

Accrued professional liabilities

     17,865         17,466   

Other accrued expenses

     21,402         11,603   
  

 

 

    

 

 

 
   $ 150,725       $ 255,661