Revenue, Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Disaggregation of revenue [Abstract]
Total net sales	$ 11,550	$ 12,243
United States [Member]
Disaggregation of revenue [Abstract]
Total net sales	9,007
International [Member]
Disaggregation of revenue [Abstract]
Total net sales	2,543
Restaurant Solutions [Member]
Disaggregation of revenue [Abstract]
Total net sales	928
Restaurant Solutions [Member] | United States [Member]
Disaggregation of revenue [Abstract]
Total net sales	832
Restaurant Solutions [Member] | International [Member]
Disaggregation of revenue [Abstract]
Total net sales	96
POS Automation and Banking [Member]
Disaggregation of revenue [Abstract]
Total net sales	1,277
POS Automation and Banking [Member] | United States [Member]
Disaggregation of revenue [Abstract]
Total net sales	1,259
POS Automation and Banking [Member] | International [Member]
Disaggregation of revenue [Abstract]
Total net sales	18
Casino and Gaming [Member]
Disaggregation of revenue [Abstract]
Total net sales	5,483
Casino and Gaming [Member] | United States [Member]
Disaggregation of revenue [Abstract]
Total net sales	3,424
Casino and Gaming [Member] | International [Member]
Disaggregation of revenue [Abstract]
Total net sales	2,059
Lottery [Member]
Disaggregation of revenue [Abstract]
Total net sales	697
Lottery [Member] | United States [Member]
Disaggregation of revenue [Abstract]
Total net sales	697
Lottery [Member] | International [Member]
Disaggregation of revenue [Abstract]
Total net sales	0
Printrex [Member]
Disaggregation of revenue [Abstract]
Total net sales	342
Printrex [Member] | United States [Member]
Disaggregation of revenue [Abstract]
Total net sales	297
Printrex [Member] | International [Member]
Disaggregation of revenue [Abstract]
Total net sales	45
TransAct Services Group [Member]
Disaggregation of revenue [Abstract]
Total net sales	2,823
TransAct Services Group [Member] | United States [Member]
Disaggregation of revenue [Abstract]
Total net sales	2,498
TransAct Services Group [Member] | International [Member]
Disaggregation of revenue [Abstract]
Total net sales	$ 325