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Revenue (Tables)
 3 Months Ended
Mar. 31, 2023
Revenue [Abstract]  
Disaggregation of Revenue
The following table disaggregates our revenue by market type, as we believe it best depicts how the nature, amount, timing and uncertainty of our revenue and cash flows are affected by economic factors.  Sales and usage-based taxes are excluded from revenues.

 
Three Months Ended
  
 
March 31,
  
   
2023
    
2022
  
   
(In thousands)
  
   
United States
    
International
    
Total
    
United States
    
International
    
Total
  
Food service technology
  
$
3,263
    
$
195
    
$
3,458
    
$
1,946
    
$
184
    
$
2,130
  
POS automation
    
1,782
      
15
      
1,797
      
1,300
      
–
      
1,300
  
Casino and gaming
    
11,569
      
4,242
      
15,811
      
2,788
      
1,974
      
4,762
  
TransAct Services Group
    
983
      
221
      
1,204
      
1,068
      
442
      
1,510
  
 Total net sales
  
$
17,597
    
$
4,673
    
$
22,270
    
$
7,102
    
$
2,600
    
$
9,702
  
Net Contract Liabilities Total net contract liabilities consisted of the following:

 
March 31, 2023
    
December 31, 2022
  
   
(In thousands)
  
Unbilled receivables, current
  
$
322
    
$
392
  
Unbilled receivables, non-current
    
150
      
163
  
Customer pre-payments
    
(7
)
    
(101
)
Deferred revenue, current
    
(1,205
)
    
(1,329
)
Deferred revenue, non-current
    
(148
)
    
(143
)
Total net contract liabilities
  
$
(888
)
  
$
(1,018
)