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Accounts Receivable (Tables)
 9 Months Ended
Sep. 30, 2017
Accounts Receivable [Abstract]  
Accounts receivable, net
The Company’s net accounts receivable consists of (in thousands):

 
 
September 30,
2017
  
December 31,
2016
 
Government segment:
      
Billed
 
$
7,465
  
$
6,779
 
Advanced billings
  
(1,344
)
  
(1,599
)
 
  
6,121
   
5,180
 
 
        
Restaurant/Retail segment:
  
22,271
   
25,525
 
Accounts receivable - net
 
$
28,392
  
$
30,705