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Valuation and Qualifying Accounts
12 Months Ended
Dec. 31, 2011
Schedule of Valuation and Qualifying Accounts Disclosure [Text Block]
   
Balance at
Beginning
of Year
   
 
Additions
   
 
Deductions
   
End of
Year
 
                         
Year Ended December 31, 2011
                       
Allowance for doubtful accounts receivable
  $ 2,492     $ 1,111     $ 2,834     $ 769  
Reserve for Attain IVF refunds
    386       260       408       238  
Reserve for attain IVF medical costs
    431       465       503       393  
                                 
Year Ended December 31, 2010
                               
Allowance for doubtful accounts receivable
  $ 2,913     $ 4,189     $ 4,610     $ 2,492  
Reserve for Attain IVF refunds
    300       422       336       386  
Reserve for Attain IVF medical costs
    344       454       367       431  
                                 
Year Ended December 31, 2009
                               
Allowance for doubtful accounts receivable
  $ 2,648     $ 4,820     $ 4,555     $ 2,913  
Reserve for Attain IVF refunds
    397       206       303       300  
Reserve for Attain IVF medical costs
    331       72       59       344