Segment and Related Information (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2017 USD ($) Segment Unit h	Mar. 31, 2016 USD ($)
Segment and Related Information [Abstract]
Number of reporting units | Unit	2
Number of reportable segments | Segment	2
Number of hours of telephone support for restaurant and retail segment | h	24
Information as to the Company's segments [Abstract]
Revenues	$ 65,865	$ 55,305
Operating income (loss)	2,241	64
Other income, net	(248)	(70)
Interest (expense) income	(32)	29
Income from continuing operations before provision for income taxes	1,961	23
Depreciation, amortization and accretion	898	777
Capital expenditures including software costs	3,349	981
Other [Member]
Information as to the Company's segments [Abstract]
Operating income (loss)	(1,632)	(1,243)
Depreciation, amortization and accretion	117	36
Capital expenditures including software costs	2,274	26
Reportable Segments [Member] | Restaurant/Retail [Member]
Information as to the Company's segments [Abstract]
Revenues	51,549	33,788
Operating income (loss)	2,362	(500)
Depreciation, amortization and accretion	774	732
Capital expenditures including software costs	1,075	948
Reportable Segments [Member] | Government [Member]
Information as to the Company's segments [Abstract]
Revenues	14,316	21,517
Operating income (loss)	1,511	1,807
Depreciation, amortization and accretion	7	9
Capital expenditures including software costs	0	7
Reportable Geographical Components [Member] | United States [Member]
Information as to the Company's segments [Abstract]
Revenues	61,567	50,219
Reportable Geographical Components [Member] | Other Countries [Member]
Information as to the Company's segments [Abstract]
Revenues	$ 4,298	$ 5,086