Revenue, Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Disaggregation of revenue [Abstract]
Total net sales	$ 11,686	$ 15,838	$ 34,586	$ 42,832
United States [Member]
Disaggregation of revenue [Abstract]
Total net sales	8,871	12,667	26,593	34,195
International [Member]
Disaggregation of revenue [Abstract]
Total net sales	2,815	3,171	7,993	8,637
Restaurant Solutions [Member]
Disaggregation of revenue [Abstract]
Total net sales	1,951	1,481	4,287	3,936
Restaurant Solutions [Member] | United States [Member]
Disaggregation of revenue [Abstract]
Total net sales	1,730	1,326	3,825	3,609
Restaurant Solutions [Member] | International [Member]
Disaggregation of revenue [Abstract]
Total net sales	221	155	462	327
POS Automation and Banking [Member]
Disaggregation of revenue [Abstract]
Total net sales	1,514	1,933	4,435	5,901
POS Automation and Banking [Member] | United States [Member]
Disaggregation of revenue [Abstract]
Total net sales	1,494	1,910	4,392	5,765
POS Automation and Banking [Member] | International [Member]
Disaggregation of revenue [Abstract]
Total net sales	20	23	43	136
Casino and Gaming [Member]
Disaggregation of revenue [Abstract]
Total net sales	5,074	8,267	16,188	21,274
Casino and Gaming [Member] | United States [Member]
Disaggregation of revenue [Abstract]
Total net sales	2,849	5,733	9,765	14,084
Casino and Gaming [Member] | International [Member]
Disaggregation of revenue [Abstract]
Total net sales	2,225	2,534	6,423	7,190
Lottery [Member]
Disaggregation of revenue [Abstract]
Total net sales	95	655	926	1,771
Lottery [Member] | United States [Member]
Disaggregation of revenue [Abstract]
Total net sales	95	655	924	1,724
Lottery [Member] | International [Member]
Disaggregation of revenue [Abstract]
Total net sales	0	0	2	47
Printrex [Member]
Disaggregation of revenue [Abstract]
Total net sales	296	451	923	1,062
Printrex [Member] | United States [Member]
Disaggregation of revenue [Abstract]
Total net sales	213	304	740	833
Printrex [Member] | International [Member]
Disaggregation of revenue [Abstract]
Total net sales	83	147	183	229
TransAct Services Group [Member]
Disaggregation of revenue [Abstract]
Total net sales	2,756	3,051	7,827	8,888
TransAct Services Group [Member] | United States [Member]
Disaggregation of revenue [Abstract]
Total net sales	2,490	2,739	6,947	8,180
TransAct Services Group [Member] | International [Member]
Disaggregation of revenue [Abstract]
Total net sales	$ 266	$ 312	$ 880	$ 708