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Accounts Receivable, net (Tables)
 12 Months Ended
Dec. 31, 2018
Receivables [Abstract]  
Summary of accounts receivable, net
The Company’s net accounts receivable consists of:
 
December 31,
(in thousands)
 
2018
 
2017
Government segment:
 
 
 
Billed
$
9,100

 
$
9,028

Advanced billings
(563
)
 
(1,977
)
 
8,537

 
7,051

Restaurant/Retail segment:
 
 
 
Accounts receivable - net
17,682

 
23,026

 
$
26,219

 
$
30,077