Business Segment Data (Details) - Business Segment Data - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Revenues:
Revenues	$ 4,789,000	$ 2,865,000	$ 15,756,000	$ 8,338,000
Operating (loss) income:
Operating income (loss)	(583,000)	(1,017,000)	(265,000)	(2,680,000)
Interest expense, net	(110,000)	(103,000)	(382,000)	(363,000)
Gain (loss) on foreign currency remeasurement	181,000	62,000	241,000	(10,000)
Gain on extinguishment of debt				77,000
Gain on forgiveness of PPP loan			824,000
Pension benefit	53,000	66,000	158,000	200,000
(Loss) income before income taxes	(459,000)	(992,000)	576,000	(2,776,000)
Income tax expense	(7,000)	(7,000)	(19,000)	(19,000)
Net (loss) income	(466,000)	(999,000)	557,000	(2,795,000)
Assets
Assets	11,831,000		11,831,000		$ 8,651,000
Digital Product Sales [Member]
Revenues:
Revenues	4,510,000	2,393,000	14,763,000	6,882,000
Digital Product Lease and Maintenance [Member]
Revenues:
Revenues	279,000	472,000	993,000	1,456,000
Operating Segments [Member]
Assets
Assets	11,811,000		11,811,000		8,127,000
Operating Segments [Member] | Digital Product Sales [Member]
Revenues:
Revenues	4,510,000	2,393,000	14,763,000	6,882,000
Operating (loss) income:
Operating income (loss)	(385,000)	(1,093,000)	375,000	(2,814,000)
Assets
Assets	10,439,000		10,439,000		6,379,000
Operating Segments [Member] | Digital Product Lease and Maintenance [Member]
Revenues:
Revenues	279,000	472,000	993,000	1,456,000
Operating (loss) income:
Operating income (loss)	148,000	335,000	538,000	977,000
Assets
Assets	1,372,000		1,372,000		1,748,000
Corporate, Non-Segment [Member]
Operating (loss) income:
Operating income (loss)	(346,000)	$ (259,000)	(1,178,000)	$ (843,000)
Assets
Assets	$ 20,000		$ 20,000		$ 524,000