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Segment and Related Information (Details)
$ in Thousands
12 Months Ended
Dec. 31, 2016
USD ($)
Segment
Unit
h
Dec. 31, 2015
USD ($)
Segment and Related Information [Abstract]    
Number of reportable units | Unit 2  
Number of reportable segments | Segment 2  
Number of hours of telephone support for hospitality segment (in hours) | h 24  
Information as to the Company's segments [Abstract]    
Revenues $ 229,653 $ 229,003
Operating income (loss) 2,213 6,629
Other (expense) income, net 1,316 (800)
Interest income (expense) 121 (308)
Income from continuing operations before provision for income taxes 3,650 5,521
Identifiable assets 124,049 115,874
Goodwill 11,051 11,051
Depreciation, amortization and accretion 4,624 3,070
Capital expenditures including software costs 6,118 3,853
United States [Member] | Reportable Geographical Components [Member]    
Information as to the Company's segments [Abstract]    
Revenues 210,821 197,303
Identifiable assets 110,369 100,583
Other Countries [Member] | Reportable Geographical Components [Member]    
Information as to the Company's segments [Abstract]    
Revenues 18,832 31,700
Identifiable assets 13,680 15,291
Restaurant Retail [Member] | Reportable Segments [Member]    
Information as to the Company's segments [Abstract]    
Revenues 149,341 141,151
Operating income (loss) 825 1,721
Identifiable assets 87,672 72,948
Goodwill 10,315 10,315
Depreciation, amortization and accretion 3,479 2,673
Capital expenditures including software costs 3,285 3,645
Government [Member] | Reportable Segments [Member]    
Information as to the Company's segments [Abstract]    
Revenues 80,312 87,852
Operating income (loss) 6,160 5,365
Identifiable assets 6,504 10,052
Goodwill 736 736
Depreciation, amortization and accretion 38 48
Capital expenditures including software costs 41 0
Other [Member]    
Information as to the Company's segments [Abstract]    
Operating income (loss) (4,772) (457)
Identifiable assets 29,873 32,874
Depreciation, amortization and accretion 1,107 349
Capital expenditures including software costs $ 2,792 $ 208