Segment and Related Information - Schedule of information of the company's segments (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Information as to the Company's segments [Abstract]
Total net revenues	$ 201,246	$ 232,605
Operating (loss) income	(9,898)	(121)
Other income, net	306	629
Interest expense, net	(387)	(121)
(Loss) income from continuing operations before provision for income taxes	(9,979)	387
Identifiable assets	94,681	114,624
Goodwill	11,051	11,051
Depreciation, amortization, and accretion	4,730	4,033
Capital expenditures including software costs	7,840	8,857
Operating Segments | Restaurant/Retail
Information as to the Company's segments [Abstract]
Total net revenues	134,069	171,593
Operating (loss) income	(14,399)	(2,761)
Identifiable assets	68,004	74,257
Goodwill	10,315	10,315
Depreciation, amortization, and accretion	4,109	3,469
Capital expenditures including software costs	4,307	3,994
Operating Segments | Government
Information as to the Company's segments [Abstract]
Total net revenues	67,177	61,012
Operating (loss) income	6,886	6,523
Identifiable assets	9,867	8,714
Goodwill	736	736
Depreciation, amortization, and accretion	32	21
Capital expenditures including software costs	124	7
Other
Information as to the Company's segments [Abstract]
Operating (loss) income	(2,385)	(3,883)
Identifiable assets	16,810	31,653
Depreciation, amortization, and accretion	589	543
Capital expenditures including software costs	$ 3,409	$ 4,856