Revenue, Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Disaggregation of revenue [Abstract]
Total net sales	$ 8,301	$ 10,247
United States [Member]
Disaggregation of revenue [Abstract]
Total net sales	6,995	7,415
International [Member]
Disaggregation of revenue [Abstract]
Total net sales	1,306	2,832
Food Service Technology [Member]
Disaggregation of revenue [Abstract]
Total net sales	2,747	1,371
Food Service Technology [Member] | United States [Member]
Disaggregation of revenue [Abstract]
Total net sales	2,564	1,239
Food Service Technology [Member] | International [Member]
Disaggregation of revenue [Abstract]
Total net sales	183	132
POS Automation and Banking [Member]
Disaggregation of revenue [Abstract]
Total net sales	1,164	1,558
POS Automation and Banking [Member] | United States [Member]
Disaggregation of revenue [Abstract]
Total net sales	1,160	1,554
POS Automation and Banking [Member] | International [Member]
Disaggregation of revenue [Abstract]
Total net sales	4	4
Casino and Gaming [Member]
Disaggregation of revenue [Abstract]
Total net sales	2,865	4,931
Casino and Gaming [Member] | United States [Member]
Disaggregation of revenue [Abstract]
Total net sales	1,964	2,558
Casino and Gaming [Member] | International [Member]
Disaggregation of revenue [Abstract]
Total net sales	901	2,373
Printrex [Member]
Disaggregation of revenue [Abstract]
Total net sales	159	117
Printrex [Member] | United States [Member]
Disaggregation of revenue [Abstract]
Total net sales	27	61
Printrex [Member] | International [Member]
Disaggregation of revenue [Abstract]
Total net sales	132	56
TransAct Services Group [Member]
Disaggregation of revenue [Abstract]
Total net sales	1,366	2,270
TransAct Services Group [Member] | United States [Member]
Disaggregation of revenue [Abstract]
Total net sales	1,280	2,003
TransAct Services Group [Member] | International [Member]
Disaggregation of revenue [Abstract]
Total net sales	$ 86	$ 267