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ACCOUNTS RECEIVABLE, NET
 6 Months Ended
Jun. 30, 2015
Receivables [Abstract]  
ACCOUNTS RECEIVABLE, NET
ACCOUNTS RECEIVABLE, NET
 
Accounts receivable, net consists of the following:
(in thousands)
 
June 30,
2015
 
December 31,
2014
 
 
 
 
 
Billed
 
$
75,896

 
$
73,532

Unbilled
 
65,407

 
61,326

 
 
141,303

 
134,858

Less: allowance for doubtful accounts
 
(24,537
)
 
(22,675
)
 
 
 
 
 
Total
 
$
116,766

 
$
112,183



Unbilled receivables consist primarily of asset management and default management services for which we recognize revenues over the service delivery period but bill following completion of the service. We also include in unbilled receivables amounts that are earned during a month and billed in the following month.