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Accounts Receivable
 3 Months Ended
Mar. 31, 2015
Accounts Receivable

(5) Accounts Receivable

Accounts receivable (in thousands) consisted of the following, as of:

 

     March 31,
2015		      December 31,
2014		  

Billed and billable

    $ 135,437       $ 187,470   

Less: unpaid deferred revenue

      (72,840 )       (104,425 ) 
  

 

 

     

 

 

  

Accounts receivable, gross

   62,597      83,045   

Less: allowance for doubtful accounts

   (4,161 )    (4,412 ) 
  

 

 

     

 

 

  

Accounts receivable, net

 $ 58,436    $ 78,633   
  

 

 

     

 

 

  

The Company offsets its accounts receivable and deferred revenue for any unpaid items included in deferred revenue and advance payments.

 

The Company maintains an allowance for doubtful accounts which represents its best estimate of probable losses inherent in the accounts receivable balances. The Company evaluates specific accounts when it becomes aware that a customer may not be able to meet its financial obligations due to deterioration of its liquidity or financial viability, credit ratings, or bankruptcy. In addition, the Company periodically adjusts this allowance based upon its review and assessment of the aging of receivables.