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Accounts Receivable (Tables)
 9 Months Ended
Sep. 30, 2015
Accounts Receivable [Abstract]  
Schedule Of Accounts Receivable

 

 

 

 

 

 

 

 

 

 

 

 

 

December 31,

 

September 30,

 

2014

 

2015

Trade receivables

$
35,762 

 

$
38,429 

Unpaid amounts for benefit services

 
19,458 

 

 
24,643 

 

 
55,220 

 

 
63,072 

Less allowance for doubtful accounts

 
(767)

 

 
(987)

Accounts receivable, net

$
54,453 

 

$
62,085